_   _ ____  _
                              ___| | | |  _ \| |
                             / __| | | | |_) | |
                            | (__| |_| |  _ <| |___
                             \___|\___/|_| \_\_____|

                                  Changelog

Version 7.53.1 (24 Feb 2017)

Daniel Stenberg (24 Feb 2017)
- release: 7.53.1

- Revert "tests: use consistent environment variables for setting charset"
  
  This reverts commit ecd1d020abdae3c3ce3643ddab3106501e62e7c0.
  
  That commit caused test failures on my Debian Linux machine for all
  changed test cases. We need to reconsider how that should get done.

Dan Fandrich (23 Feb 2017)
- tests: use consistent environment variables for setting charset
  
  Character set in POSIX is set by the locale defined (in decreasing order
  of precedence) by the LC_ALL, LC_CTYPE and LANG environment variables (I
  believe CHARSET is only historic). LC_ALL is cleared to ensure that
  LC_CTYPE takes effect, but LC_ALL is not used to set the locale to
  ensure that other parts of the locale aren't overriden, if set.  Since
  there doesn't seem to be a cross-platform way of specifying a UTF-8
  locale, and not all systems may support UTF-8, a <precheck> is used
  (where relevant) to skip the test if UTF-8 isn't in use.  Test 1035 was
  also converted to UTF-8 for consistency, as the actual character set
  used there is irrelevant to the test.

Jay Satiro (23 Feb 2017)
- url: Default the CA proxy bundle location to CURL_CA_BUNDLE
  
  If the compile-time CURL_CA_BUNDLE location is defined use it as the
  default value for the proxy CA bundle location, which is the same as
  what we already do for the regular CA bundle location.
  
  Ref: https://github.com/curl/curl/pull/1257

Daniel Stenberg (23 Feb 2017)
- [Sergii Pylypenko brought this change]

  rand: added missing #ifdef HAVE_FCNTL_H around fcntl.h header
  
  Closes #1285

- TODO: "OPTIONS *"
  
  Closes #1280

- RELEASE-NOTES: synced with 443e5b03a7d441

- THANKS-filter: shachaf

- [İsmail Dönmez brought this change]

  tests: Set CHARSET & LANG to UTF-8 in 1035, 2046 and 2047
  
  Closes #1283
  Fixes #1277

- bump: 7.53.1 coming up
  
  synced with df665f4df0f7a352

- formdata: check for EOF when reading from stdin
  
  Reported-by: shachaf@users.noreply.github.com
  
  Fixes #1281

Jay Satiro (22 Feb 2017)
- docs: gitignore curl.1
  
  curl.1 is generated by the cmdline-opts script since 4c49b83.

Daniel Stenberg (22 Feb 2017)
- TODO: HTTP Digest using SHA-256

- TODO: brotli is deployed widely now

Jay Satiro (21 Feb 2017)
- [Viktor Szakats brought this change]

  urldata: include curl_sspi.h when Windows SSPI is enabled
  
  f77dabe broke builds in Windows using Windows SSPI but not Windows SSL.
  
  Bug: https://github.com/curl/curl/issues/1276
  Reported-by: jveazey@users.noreply.github.com

- url: Improve CURLOPT_PROXY_CAPATH error handling
  
  - Change CURLOPT_PROXY_CAPATH to return CURLE_NOT_BUILT_IN if the option
    is not supported, which is the same as what we already do for
    CURLOPT_CAPATH.
  
  - Change the curl tool to handle CURLOPT_PROXY_CAPATH error
    CURLE_NOT_BUILT_IN as a warning instead of as an error, which is the
    same as what we already do for CURLOPT_CAPATH.
  
  - Fix CAPATH docs to show that CURLE_NOT_BUILT_IN is returned when the
    respective CAPATH option is not supported by the SSL library.
  
  Ref: https://github.com/curl/curl/pull/1257

- cyassl: fix typo

Version 7.53.0 (22 Feb 2017)

Daniel Stenberg (22 Feb 2017)
- release: 7.53.0

- cookie: fix declaration of 'dup' shadows a global declaration

- TLS: make SSL_VERIFYSTATUS work again
  
  The CURLOPT_SSL_VERIFYSTATUS option was not properly handled by libcurl
  and thus even if the status couldn't be verified, the connection would
  be allowed and the user would not be told about the failed verification.
  
  Regression since cb4e2be7c6d42ca
  
  CVE-2017-2629
  Bug: https://curl.haxx.se/docs/adv_20170222.html
  
  Reported-by: Marcus Hoffmann

Jay Satiro (21 Feb 2017)
- digest_sspi: Handle 'stale=TRUE' directive in HTTP digest
  
  - If the server has provided another challenge use it as the replacement
    input token if stale=TRUE. Otherwise previous credentials have failed
    so return CURLE_LOGIN_DENIED.
  
  Prior to this change the stale directive was ignored and if another
  challenge was received it would cause error CURLE_BAD_CONTENT_ENCODING.
  
  Ref: https://tools.ietf.org/html/rfc2617#page-10
  
  Bug: https://github.com/curl/curl/issues/928
  Reported-by: tarek112@users.noreply.github.com

Daniel Stenberg (20 Feb 2017)
- smb: use getpid replacement for windows UWP builds
  
  Source: https://github.com/Microsoft/vcpkg/blob/7676b8780db1e1e591c4fc7eba4f96f73c428cb4/ports/curl/0002_fix_uwp.patch

- TODO: CURLOPT_RESOLVE for any port number
  
  Closes #1264

- RELEASE-NOTES: synced with af30f1152d43dcdb

- [Jean Gressmann brought this change]

  sftp: improved checks for create dir failures
  
  Since negative values are errors and not only -1. This makes SFTP upload
  with --create-dirs work (again).
  
  Closes #1269

Jay Satiro (20 Feb 2017)
- [Max Khon brought this change]

  digest_sspi: Fix nonce-count generation in HTTP digest
  
  - on the first invocation: keep security context returned by
    InitializeSecurityContext()
  
  - on subsequent invocations: use MakeSignature() instead of
    InitializeSecurityContext() to generate HTTP digest response
  
  Bug: https://github.com/curl/curl/issues/870
  Reported-by: Andreas Roth
  
  Closes https://github.com/curl/curl/pull/1251

- examples/multi-uv: checksrc compliance

Michael Kaufmann (19 Feb 2017)
- string formatting: fix 4 printf-style format strings

Dan Fandrich (18 Feb 2017)
- tests: removed the obsolete name parameter

Michael Kaufmann (18 Feb 2017)
- speed caps: update the timeouts if the speed is too low/high
  
  Follow-up to 4b86113
  
  Fixes https://github.com/curl/curl/issues/793
  Fixes https://github.com/curl/curl/issues/942

- docs: fix timeout handling in multi-uv example

- proxy: fix hostname resolution and IDN conversion
  
  Properly resolve, convert and log the proxy host names.
  Support the "--connect-to" feature for SOCKS proxies and for passive FTP
  data transfers.
  
  Follow-up to cb4e2be
  
  Reported-by: Jay Satiro
  Fixes https://github.com/curl/curl/issues/1248

Jay Satiro (17 Feb 2017)
- [Isaac Boukris brought this change]

  http: fix missing 'Content-Length: 0' while negotiating auth
  
  - While negotiating auth during PUT/POST if a user-specified
    Content-Length header is set send 'Content-Length: 0'.
  
  This is what we do already in HTTPREQ_POST_FORM and what we did in the
  HTTPREQ_POST case (regression since afd288b).
  
  Prior to this change no Content-Length header would be sent in such a
  case.
  
  Bug: https://curl.haxx.se/mail/lib-2017-02/0006.html
  Reported-by: Dominik Hölzl
  
  Closes https://github.com/curl/curl/pull/1242

Daniel Stenberg (16 Feb 2017)
- [Simon Warta brought this change]

  winbuild: add note on auto-detection of MACHINE in Makefile.vc
  
  Closes #1265

- RELEASE-PROCEDURE: update the upcoming release calendar

- TODO: consider file name from the redirected URL with -O ?
  
  It isn't easily solved, but with some thinking someone could probably
  come up with a working approach?
  
  Closes #1241

Jay Satiro (15 Feb 2017)
- tool_urlglob: Allow a glob range with the same start and stop
  
  For example allow ranges like [1-1] and [a-a] etc.
  
  Regression since 5ca96cb.
  
  Bug: https://github.com/curl/curl/issues/1238
  Reported-by: R. Dennis Steed

Daniel Stenberg (15 Feb 2017)
- axtls: adapt to API changes
  
  Builds with axTLS 2.1.2. This then also breaks compatibility with axTLS
  < 2.1.0 (the older API)
  
  ... and fix the session_id mixup brought in 04b4ee549
  
  Fixes #1220

- RELEASE-NOTES: synced with 690935390c29c

- [Nick Draffen brought this change]

  curl: fix typo in time condition warning message
  
  The warning message had a typo. The argument long form is --time-cond
  not --timecond
  
  Closes #1263

- smb: code indent

Jay Satiro (14 Feb 2017)
- configure: Allow disabling pthreads, fall back on Win32 threads
  
  When the threaded resolver option is specified for configure the default
  thread library is pthreads. This change makes it possible to
  --disable-pthreads and then configure can fall back on Win32 threads for
  native Windows builds.
  
  Closes https://github.com/curl/curl/pull/1260

Daniel Stenberg (13 Feb 2017)
- http2: fix memory-leak when denying push streams
  
  Reported-by: zelinchen@users.noreply.github.com
  Fixes #1229

Jay Satiro (11 Feb 2017)
- tool_operate: Show HTTPS-Proxy options on CURLE_SSL_CACERT
  
  When CURLE_SSL_CACERT occurs the tool shows a lengthy error message to
  the user explaining possible solutions such as --cacert and --insecure.
  
  This change appends to that message similar options --proxy-cacert and
  --proxy-insecure when there's a specified HTTPS proxy.
  
  Closes https://github.com/curl/curl/issues/1258

Daniel Stenberg (10 Feb 2017)
- cmdline-opts/page-footer: ftp.sunet.se is no longer an FTP mirror

- URL: only accept ";options" in SMTP/POP3/IMAP URL schemes
  
  Fixes #1252

Jay Satiro (9 Feb 2017)
- cmdline-opts/socks*: Mention --preproxy in --socks* opts
  
  - Document in --socks* opts they're still mutually exclusive of --proxy.
  
  Partial revert of 423a93c; I had misinterpreted the SOCKS proxy +
  HTTP/HTTPS proxy combination.
  
  - Document in --socks* opts that --preproxy can be used to specify a
    SOCKS proxy at the same time --proxy is used with an HTTP/HTTPS proxy.

Daniel Stenberg (9 Feb 2017)
- CURLOPT_SSL_VERIFYPEER.3: also the https proxy version

Kamil Dudka (9 Feb 2017)
- nss: make FTPS work with --proxytunnel
  
  If the NSS code was in the middle of a non-blocking handshake and it
  was asked to finish the handshake in blocking mode, it unexpectedly
  continued in the non-blocking mode, which caused a FTPS connection
  over CONNECT to fail with "(81) Socket not ready for send/recv".
  
  Bug: https://bugzilla.redhat.com/1420327

Daniel Stenberg (9 Feb 2017)
- examples/multithread.c: link to our multi-thread docs
  
  ... instead of the OpenSSL mutex page.

- http_proxy: avoid freeing static memory
  
  Follow up to 7fe81ec298e0: make sure 'host' is either NULL or malloced.

- [Cameron MacMinn brought this change]

  http_proxy: Fix tiny memory leak upon edge case connecting to proxy
  
  Fixes #1255

Michael Kaufmann (8 Feb 2017)
- polarssl, mbedtls: Fix detection of pending data
  
  Reported-by: Dan Fandrich
  Bug: https://curl.haxx.se/mail/lib-2017-02/0032.html

Dan Fandrich (7 Feb 2017)
- test1139: Added the --manual keyword since the manual is required

Daniel Stenberg (7 Feb 2017)
- RELEASE-NOTES: synced with 102454459dd688c

- THANKS-filter: polish some recent contributors

- http2: reset push header counter fixes crash
  
  When removing an easy handler from a multi before it completed its
  transfer, and it had pushed streams, it would segfault due to the pushed
  counted not being cleared.
  
  Fixed-by: zelinchen@users.noreply.github.com
  Fixes #1249

- [Markus Westerlind brought this change]

  transfer: only retry nobody-requests for HTTP
  
  Using sftp to delete a file with CURLOPT_NOBODY set with a reused
  connection would fail as curl expected to get some data. Thus it would
  retry the command again which fails as the file has already been
  deleted.
  
  Fixes #1243

Jay Satiro (7 Feb 2017)
- [Daniel Gustafsson brought this change]

  telnet: Fix typos
  
  Ref: https://github.com/curl/curl/pull/1245

- [Daniel Gustafsson brought this change]

  test552: Fix typos
  
  Closes https://github.com/curl/curl/pull/1245

- [Daniel Gustafsson brought this change]

  darwinssl: Avoid parsing certificates when not in verbose mode
  
  The information extracted from the server certificates in step 3 is only
  used when in verbose mode, and there is no error handling or validation
  performed as that has already been done. Only run the certificate
  information extraction when in verbose mode and libcurl was built with
  verbose strings.
  
  Closes https://github.com/curl/curl/pull/1246

- [JDepooter brought this change]

  schannel: Remove incorrect SNI disabled message
  
  - Remove the SNI disabled when host verification disabled message
    since that is incorrect.
  
  - Show a message for legacy versions of Windows <= XP that connections
    may fail since those versions of WinSSL lack SNI, algorithms, etc.
  
  Bug: https://github.com/curl/curl/pull/1240

Daniel Stenberg (7 Feb 2017)
- CHANGES: spell fix, use correct path to script

- CHANGES.0: removed
  
  This is the previously manually edited changelog, not touched since Aug
  2015. Still present in git for those who wants it.

Dan Fandrich (6 Feb 2017)
- cmdline-opts: Fixed build and test in out of source tree builds

Viktor Szakats (6 Feb 2017)
- use *.sourceforge.io and misc URL updates
  
  Ref: https://sourceforge.net/blog/introducing-https-for-project-websites/
  Closes: https://github.com/curl/curl/pull/1247

Jay Satiro (6 Feb 2017)
- docs: Add more HTTPS proxy documentation
  
  - Document HTTPS proxy type.
  
  - Document --write-out %{proxy_ssl_verify_result}.
  
  - Document SOCKS proxy + HTTP/HTTPS proxy combination.
  
  HTTPS proxy support was added in 7.52.0 for OpenSSL, GnuTLS and NSS.
  
  Ref: https://github.com/curl/curl/commit/cb4e2be

- OS400: Fix symbols
  
  - s/CURLOPT_SOCKS_PROXY/CURLOPT_PRE_PROXY
    Follow-up to 7907a2b and 845522c.
  
  - Fix incorrect id for CURLOPT_PROXY_PINNEDPUBLICKEY.
  
  - Add id for CURLOPT_ABSTRACT_UNIX_SOCKET.
  
  Bug: https://github.com/curl/curl/issues/1237
  Reported-by: jonrumsey@users.noreply.github.com

- [Sean Burford brought this change]

  cmake: Support curl --xattr when built with cmake
  
  - Test for and set HAVE_FSETXATTR when support for extended file
    attributes is present.
  
  Closes https://github.com/curl/curl/pull/1176

- [Adam Langley brought this change]

  openssl: Don't use certificate after transferring ownership
  
  SSL_CTX_add_extra_chain_cert takes ownership of the given certificate
  while, despite the similar name, SSL_CTX_add_client_CA does not. Thus
  it's best to call SSL_CTX_add_client_CA before
  SSL_CTX_add_extra_chain_cert, while the code still has ownership of the
  argument.
  
  Closes https://github.com/curl/curl/pull/1236

Daniel Stenberg (29 Jan 2017)
- [Antoine Aubert brought this change]

  mbedtls: implement CTR-DRBG and HAVEGE random generators
  
  closes #1227

- docs: we no longer ship HTML versions of man pages
  
  ... refer to the web site for the web versions.

- [railsnewbie257 brought this change]

  docs: proofread README.netware README.win32
  
  Closes #1231

- RELEASE-NOTES; synced with ab08d82648

Michael Kaufmann (28 Jan 2017)
- mbedtls: disable TLS session tickets
  
  SSL session reuse with TLS session tickets is not supported yet.
  Use SSL session IDs instead.
  
  See https://github.com/curl/curl/issues/1109

- gnutls: disable TLS session tickets
  
  SSL session reuse with TLS session tickets is not supported yet.
  Use SSL session IDs instead.
  
  Fixes https://github.com/curl/curl/issues/1109

- polarssl: fix hangs
  
  This bugfix is similar to commit c111178bd4.

Daniel Stenberg (27 Jan 2017)
- cookies: do not assume a valid domain has a dot
  
  This repairs cookies for localhost.
  
  Non-PSL builds will now only accept "localhost" without dots, while PSL
  builds okeys everything not listed as PSL.
  
  Added test 1258 to verify.
  
  This was a regression brought in a76825a5efa6b4

- TODO: remove "Support TLS v1.3"
  
  Support is trickling in already.

- [railsnewbie257 brought this change]

  INTERNALS.md: language improvements
  
  Closes #1226

- telnet: fix windows compiler warnings
  
  Thumbs-up-by: Jay Satiro
  
  Closes #1225

- VC: remove the makefile.vc6 build infra
  
  The winbuild/ build files is now the single MSVC makefile build choice.
  
  Closes #1215

- [Jay Satiro brought this change]

  cmdline-opts/gen.pl: Open input files in CRLF mode
  
  On Windows it's possible to have input files with CRLF line endings and
  a perl that defaults to LF line endings (eg msysgit). Currently that
  results in generator output of mixed line endings of CR, LF and CRLF.
  
  This change fixes that issue in the most succinct way by opening the
  files in :crlf text mode even when the perl being used does not default
  to that mode. (On operating systems that don't have a separate text mode
  it's essentially a no-op.) The output continues to be in the perl's
  native line ending.

- docs/curl.1: generate from the cmdline-opts script

- vtls: source indentation fix

- contri*.sh: cut off parentheses from names too

- RELEASE-NOTES: synced with 01ab7c30bba6f

- vtls: fix PolarSSL non-blocking handling
  
  A regression brought in cb4e2be
  
  Reported-by: Michael Kaufmann
  Bug: https://github.com/curl/curl/issues/1174#issuecomment-274018791

- [Antoine Aubert brought this change]

  vtls: fix mbedtls multi non blocking handshake.
  
  When using multi, mbedtls handshake is in non blocking mode.  vtls must
  set wait for read/write flags for the socket.
  
  Closes #1223

- [Richy Kim brought this change]

  CURLOPT_BUFFERSIZE: support enlarging receive buffer
  
  Replace use of fixed macro BUFSIZE to define the size of the receive
  buffer.  Reappropriate CURLOPT_BUFFERSIZE to include enlarging receive
  buffer size.  Upon setting, resize buffer if larger than the current
  default size up to a MAX_BUFSIZE (512KB). This can benefit protocols
  like SFTP.
  
  Closes #1222

- sws: use SOCKERRNO, not errno
  
  Reported-by: Gisle Vanem

Michael Kaufmann (19 Jan 2017)
- KNOWN_BUGS: HTTP/2 server push enabled when no pushes can be accepted
  
  This has been implemented with commit 9ad034e.

Viktor Szakats (19 Jan 2017)
- *.rc: escape non-ASCII/non-UTF-8 character for clarity
  
  Closes https://github.com/curl/curl/pull/1217

Kamil Dudka (19 Jan 2017)
- docs: non-blocking SSL handshake is now supported with NSS
  
  Implemented since curl-7_36_0-130-g8868a22
  
  Reported-by: Fahim Chandurwala

Michael Kaufmann (18 Jan 2017)
- CURLOPT_CONNECT_TO: Fix compile warnings
  
  Fix compile warnings that appeared only when curl has been configured
  with '--disable-verbose'.

Daniel Stenberg (18 Jan 2017)
- usercertinmem.c: improve the short description

- parseurl: move back buffer to function scope
  
  Regression since 1d4202ad, which moved the buffer into a more narrow
  scope, but the data in that buffer was used outside of that more narrow
  scope.
  
  Reported-by: Dan Fandrich
  Bug: https://curl.haxx.se/mail/lib-2017-01/0093.html

Jay Satiro (17 Jan 2017)
- openssl: Fix random generation
  
  - Fix logic error in Curl_ossl_random.
  
  Broken a few days ago in 807698d.

Daniel Stenberg (17 Jan 2017)
- TODO: share OpenSSL contexts
  
  By supporting this, subsequent connects would load a lot less data from
  disk.
  
  Closes #1110

- bump: next release will be 7.53.0

Kamil Dudka (15 Jan 2017)
- nss: use the correct lock in nss_find_slot_by_name()

Alessandro Ghedini (15 Jan 2017)
- http2: disable server push if not requested
  
  Ref: https://github.com/curl/curl/pull/1160

Daniel Stenberg (14 Jan 2017)
- [railsnewbie257 brought this change]

  docs: improved language in README.md HISTORY.md CONTRIBUTE.md
  
  Closes #1211

Alessandro Ghedini (14 Jan 2017)
- http: print correct HTTP string in verbose output when using HTTP/2
  
  Before:
  ```
   % src/curl https://sigsegv.ninja/ -v --http2
  ...
  > GET / HTTP/1.1
  > Host: sigsegv.ninja
  > User-Agent: curl/7.52.2-DEV
  > Accept: */*
  >
  ...
  ```
  
  After:
  ```
   % src/curl https://sigsegv.ninja/ -v --http2
  ...
  > GET / HTTP/2
  > Host: sigsegv.ninja
  > User-Agent: curl/7.52.2-DEV
  > Accept: */*
  >
  ```

Daniel Stenberg (14 Jan 2017)
- TODO: send only part of --data
  
  Closes #1200

- TODO: implemened "--fail-fast to exit on first transfer fail"
  
  Even though it is called --fail-early

- TODO: Chunked transfer multipart formpost
  
  Closes #1139

- TODO: Improve formpost API, not just add an easy argument

- addrinfo: fix compiler warning on offsetof() use
  
  curl_addrinfo.c:519:20: error: conversion to ‘curl_socklen_t {aka
  unsigned int}’ from ‘long unsigned int’ may alter its value
  [-Werror=conversion]
  
  Follow-up to 1d786faee1046f

- THANKS-filter: Jiri Malak

- RELEASE-NOTES: synced with a7c73ae309c

Peter Wu (13 Jan 2017)
- [Isaac Boukris brought this change]

  unix_socket: add support for abstract unix domain socket
  
  In addition to unix domain sockets, Linux also supports an
  abstract namespace which is independent of the filesystem.
  
  In order to support it, add new CURLOPT_ABSTRACT_UNIX_SOCKET
  option which uses the same storage as CURLOPT_UNIX_SOCKET_PATH
  internally, along with a flag to specify abstract socket.
  
  On non-supporting platforms, the abstract address will be
  interpreted as an empty string and fail gracefully.
  
  Also add new --abstract-unix-socket tool parameter.
  
  Signed-off-by: Isaac Boukris <iboukris@gmail.com>
  Reported-by: Chungtsun Li (typeless)
  Reviewed-by: Daniel Stenberg
  Reviewed-by: Peter Wu
  Closes #1197
  Fixes #1061

Daniel Stenberg (13 Jan 2017)
- write-out.d: 'time_total' is not always shown with ms precision
  
  We have higher resolution since 7.52.0

- next.d: --trace and --trace-ascii are also global

- [Isaac Boukris brought this change]

  curl: reset the easy handle at --next
  
  So that only "global" options (verbose mostly) survive into the next
  transfer, and the others have to be set again unless default is fine.

- [Frank Gevaerts brought this change]

  docs: Add note about libcurl copying strings to CURLOPT_* manpages
  
  Closes #1169

- [Frank Gevaerts brought this change]

  CURLOPT_PREQUOTE.3: takes a struct curl_slist*, not a char*

- IDN: Use TR46 non-transitional
  
  Assisted-by: Tim Rühsen

- IDN: revert use of the transitional option
  
  It made the german ß get converted to ss, IDNA2003 style, and we can't
  have that for the .de TLD - a primary reason for our switch to IDNA2008.
  
  Test 165 verifies.

- [Tim Rühsen brought this change]

  IDN: Fix compile time detection of linidn2 TR46
  
  Follow-up to f30cbcac1
  
  Closes #1207

- [ERAMOTO Masaya brought this change]

  url: --noproxy option overrides NO_PROXY environment variable
  
  Under condition using http_proxy env var, noproxy list was the
  combination of --noproxy option and NO_PROXY env var previously. Since
  this commit, --noproxy option overrides NO_PROXY environment variable
  even if use http_proxy env var.
  
  Closes #1140

- [ERAMOTO Masaya brought this change]

  url: Refactor detect_proxy()
  
  If defined CURL_DISABLE_HTTP, detect_proxy() returned NULL. If not
  defined CURL_DISABLE_HTTP, detect_proxy() checked noproxy list.
  
  Thus refactor to set proxy to NULL instead of calling detect_proxy() if
  define CURL_DISABLE_HTTP, and refactor to call detect_proxy() if not
  define CURL_DISABLE_HTTP and the host is not in the noproxy list.

- [ERAMOTO Masaya brought this change]

  url: Fix NO_PROXY env var to work properly with --proxy option.
  
  The combination of --noproxy option and http_proxy env var works well
  both for proxied hosts and non-proxied hosts.
  
  However, when combining NO_PROXY env var with --proxy option,
  non-proxied hosts are not reachable while proxied host is OK.
  
  This patch allows us to access non-proxied hosts even if using NO_PROXY
  env var with --proxy option.

- [Tim Rühsen brought this change]

  IDN: Use TR46 'transitional' for toASCII translations
  
  References: http://unicode.org/faq/idn.html
              http://unicode.org/reports/tr46
  
  Closes #1206

- [railsnewbie257 brought this change]

  docs: FAQ MAIL-ETIQUETTE language fixes
  
  Closes #1194

- [Marcus Hoffmann brought this change]

  gnutls: check for alpn and ocsp in configure
  
  Check for presence of gnutls_alpn_* and gnutls_ocsp_* functions during
  configure instead of relying on the version number.  GnuTLS has options
  to turn these features off and we ca just work with with such builds
  like we work with older versions.
  
  Signed-off-by: Marcus Hoffmann <m.hoffmann@cartelsol.com>
  
  Closes #1204

Jay Satiro (12 Jan 2017)
- url: Fix parsing for when 'file' is the default protocol
  
  Follow-up to 3463408.
  
  Prior to 3463408 file:// hostnames were silently stripped.
  
  Prior to this commit it did not work when a schemeless url was used with
  file as the default protocol.
  
  Ref: https://curl.haxx.se/mail/lib-2016-11/0081.html
  Closes https://github.com/curl/curl/pull/1124
  
  Also fix for drive letters:
  
  - Support --proto-default file c:/foo/bar.txt
  
  - Support file://c:/foo/bar.txt
  
  - Fail when a file:// drive letter is detected and not MSDOS/Windows.
  
  Bug: https://github.com/curl/curl/issues/1187
  Reported-by: Anatol Belski
  Assisted-by: Anatol Belski

Daniel Stenberg (12 Jan 2017)
- rand: make it work without TLS backing
  
  Regression introduced in commit f682156a4fc6c4
  
  Reported-by: John Kohl
  Bug: https://curl.haxx.se/mail/lib-2017-01/0055.html

Jay Satiro (12 Jan 2017)
- STARTTLS: Don't print response character in denied messages
  
  Both IMAP and POP3 response characters are used internally, but when
  appended to the STARTTLS denial message likely could confuse the user.
  
  Closes https://github.com/curl/curl/pull/1203

- smtp: Fix STARTTLS denied error message
  
  - Format the numeric denial code as an integer instead of a character.

Daniel Stenberg (11 Jan 2017)
- http2_send: avoid unsigned integer wrap around
  
  ... when checking for a too large request.

Jay Satiro (9 Jan 2017)
- [Jiri Malak brought this change]

  cmake: Fix passing _WINSOCKAPI_ macro to compiler
  
  Define _WINSOCKAPI_ blank rather than to 1 in order to match the value
  used by Microsoft's winsock header files.
  
  Closes https://github.com/curl/curl/pull/1195

Daniel Stenberg (9 Jan 2017)
- sws: retry send() on EWOULDBLOCK
  
  Fixes spurious test 1060 and 1061 failures on OpenBSD, Solaris and more.
  
  Bug: https://curl.haxx.se/mail/lib-2017-01/0009.html
  Reported-by: Christian Weisgerber

- RELEASE-NOTES: synced with a41e8592d6b3e58

- examples: make the C++ examples follow our code style too
  
  At least mostly, not counting // comments.

- [Aulddays brought this change]

  asiohiper: improved socket handling
  
  libcurl requires CURLMOPT_SOCKETFUNCTION to KEEP watching socket events
  and notify back. Modify event_cb() to continue watching events when
  fired.
  
  Fixes #1191
  Closes #1192
  Fixed-by: Mingliang Zhu

- [Jiří Malák brought this change]

  lib506: fix build for Open Watcom
  
  Rename symbol lock to locks to not clash with OW CRTL function name.
  
  Closes #1196

- ROADMAP: 2017 cleanup
  
  Removed items already fixed, clarified a few others.

- COPYING: update the generic copyright year range

- docs/silent: mention --show-error in --silent description
  
  Reported in #1190
  Reported-by: Dan Jacobson

- docs/page-header: mention how to disable the progress meter
  
  curl.1 is regenerated
  
  Fixes #1190

Dan Fandrich (7 Jan 2017)
- wolfssl: display negotiated SSL version and cipher

- wolfssl: support setting cipher list

Patrick Monnerat (6 Jan 2017)
- CIPHERS.md: document GSKit ciphers

Jay Satiro (5 Jan 2017)
- [peterpih brought this change]

  TheArtOfHttpScripting: grammar

Nick Zitzmann (3 Jan 2017)
- darwinssl: --insecure overrides --cacert if both settings are in use
  
  Fixes #1184

Jay Satiro (2 Jan 2017)
- docs/libcurl: TCP_KEEPALIVE start and interval default to 60
  
  Since the TCP keep-alive options were added in 705f0f7 the start and
  interval default values have been 60, but that wasn't documented.
  
  Bug: https://curl.haxx.se/mail/lib-2017-01/0000.html
  Reported-by: Praveen Pvs

Daniel Stenberg (29 Dec 2016)
- curl.h: CURLE_FUNCTION_NOT_FOUND is no longer in use
  
  This error code was once introduced when some library was dynamically
  loaded and a funciton within said library couldn't be found.

- content_encoding: change return code on a failure
  
  Failure to decompress is now a write error instead of the weird
  "function not found".

- page-footer: error 36 is protocol agnostic!

Jay Satiro (28 Dec 2016)
- tool_operate: Fix --remote-time incorrect times on Windows
  
  - Use Windows API SetFileTime to set the file time instead of utime.
  
  Avoid utime on Windows if possible because it may apply a daylight
  saving time offset to our UTC file time.
  
  Bug: https://curl.haxx.se/mail/archive-2016-11/0033.html
  Reported-by: Tim
  
  Closes https://github.com/curl/curl/pull/1121

Daniel Stenberg (29 Dec 2016)
- [Max Khon brought this change]

  digest_sspi: copy terminating NUL as well
  
  Curl_auth_decode_digest_http_message(): copy terminating NUL as later
  Curl_override_sspi_http_realm() expects a NUL-terminated string.
  
  Fixes #1180

- curl_formadd.3: CURLFORM_CONTENTSLENGTH not needed when chunked
  
  Mentioned in #1013

- [Kyselgov E.N brought this change]

  cmake: use crypt32.lib when building with OpenSSL on windows
  
  Reviewed-by: Peter Wu
  Closes #1149
  Fixes #1147

- [Chris Araman brought this change]

  darwinssl: fix CFArrayRef leak
  
  Reviewed-by: Nick Zitzmann
  Closes #1173

- [Chris Araman brought this change]

  darwinssl: fix iOS build
  
  Reviewed-by: Nick Zitzmann
  Fixes #1172

- curl: remove superfluous include file
  
  The <netinet/tcp.h> is a leftover from the past when TCP socket options
  were set in this file. This include causes build issues on AIX 4.3.
  
  Reported-by: Kim Minjoong
  
  Closes #1178

- RELEASE-NOTES: synced with a7b38c9dc98481e

- vtls: s/SSLEAY/OPENSSL
  
  Fixed an old leftover use of the USE_SSLEAY define which would make a
  socket get removed from the applications sockets to monitor when the
  multi_socket API was used, leading to timeouts.
  
  Bug: #1174

- docs/ciphers: link to our own new page about ciphers
  
  ... as the former ones always go stale!

- cmdline-opts/page-footer: add three more exit codes
  
  ... and regenerated curl.1

- formdata: use NULL, not 0, when returning pointers

- ftp: failure to resolve proxy should return that error code

- configure: accept --with-libidn2 instead
  
  ... which the help text already implied since we switched to libidn2
  from libidn in commit 9c91ec778104ae3b back in October 2016.
  
  Reported-by: Christian Weisgerber
  Bug: https://curl.haxx.se/mail/lib-2016-12/0110.html

- test1282: verify the ftp-gss check

- ftp-gss: check for init before use
  
  To avoid dereferencing a NULL pointer.
  
  Reported-by: Daniel Romero

Jay Satiro (24 Dec 2016)
- build-wolfssl: Sync config with wolfSSL 3.10
  
  wolfSSL configure script relevant changes from 3.9 to 3.10:
  
  - DES3 no longer enabled by default
  - Shamir no longer enabled by default
  - Extended master secret enabled by default
  - RSA and ECC timing protections enabled by default
  
  For backwards compatibility I enabled DES3 and ECC shamir config options
  (ie no change from 3.9), and the other changes are included.

- cyassl: use time_t instead of long for timeout

Daniel Stenberg (23 Dec 2016)
- bump: toward next release

- http: remove "Curl_http_done: called premature" message
  
  ... it only confuses people.

- openssl-random: check return code when asking for random
  
  and fail appropriately if it returns error

- gnutls-random: check return code for failed random

Version 7.52.1 (22 Dec 2016)

Daniel Stenberg (22 Dec 2016)
- RELEASE-NOTES: curl 7.52.1

- lib557.c: use a shorter MAXIMIZE representation
  
  Since several compilers had problems with the previous one
  
  Reported-by: Ray Satiro
  Bug: https://curl.haxx.se/mail/lib-2016-12/0098.html

- runtests: remove the valgrind parser
  
  Old legacy parsing that 1) hid problems for us and 2) probably isn't
  needed anymore.

- [Kamil Dudka brought this change]

  randit: store the value in the buffer

- tests/Makefile: run checksrc on debug builds
  
  ... just like we already do in src/ and lib/

- lib557: move the "enable LONGLINE" to allow more long lines
  
  This file is riddled with them...

- bump: toward next release

Marcel Raad (21 Dec 2016)
- lib: fix MSVC compiler warnings
  
  Visual C++ complained:
  warning C4267: '=': conversion from 'size_t' to 'long', possible loss of data
  warning C4701: potentially uninitialized local variable 'path' used

Version 7.52.0 (20 Dec 2016)

Daniel Stenberg (20 Dec 2016)
- THANKS: 13 new contributors from 7.52.0

- RELEASE-NOTES: 7.52.0

- ssh: inhibit coverity warning with (void)
  
  CID 1397391 (#1 of 1): Unchecked return value (CHECKED_RETURN)

- Curl_recv_has_postponed_data: silence compiler warnings
  
  Follow-up to d00f2a8f2

Jay Satiro (19 Dec 2016)
- tests: checksrc compliance

- http_proxy: Fix proxy CONNECT hang on pending data
  
  - Check for pending data before waiting on the socket.
  
  Bug: https://github.com/curl/curl/issues/1156
  Reported-by: Adam Langley

Daniel Stenberg (19 Dec 2016)
- cmdline-opts/tlsv1.d: rephrased

- [Dan McNulty brought this change]

  schannel: fix wildcard cert name validation on Win CE
  
  Fixes a few issues in manual wildcard cert name validation in
  schannel support code for Win32 CE:
  - when comparing the wildcard name to the hostname, the wildcard
    character was removed from the cert name and the hostname
    was checked to see if it ended with the modified cert name.
    This allowed cert names like *.com to match the connection
    hostname. This violates recommendations from RFC 6125.
  - when the wildcard name in the certificate is longer than the
    connection hostname, a buffer overread of the connection
    hostname buffer would occur during the comparison of the
    certificate name and the connection hostname.

- printf: fix floating point buffer overflow issues
  
  ... and add a bunch of floating point printf tests

- config-amigaos.h: (embarrassed) made the line shorter

- config-amigaos.h: fix bug report email reference

- RELEASE-NOTES: synced with 4517158abfeba

- CIPHERS.md: backtick the names to show underscores fine

- form-string.d: fix format mistake
  
  and regenerated curl.1
  
  Reported-by: Gisle Vanem

Michael Kaufmann (18 Dec 2016)
- openssl: simplify expression in Curl_ossl_version

- curl_easy_recv: Improve documentation and example program
  
  Follow-up to 82245ea: Fix the example program sendrecv.c (handle
  CURLE_AGAIN, handle incomplete send). Improve the documentation
  for curl_easy_recv() and curl_easy_send().
  
  Reviewed-by: Frank Meier
  Assisted-by: Jay Satiro
  
  See https://github.com/curl/curl/pull/1134

- [Isaac Boukris brought this change]

  Curl_getconnectinfo: avoid checking if the connection is closed
  
  It doesn't benefit us much as the connection could get closed at
  any time, and also by checking we lose the ability to determine
  if the socket was closed by reading zero bytes.
  
  Reported-by: Michael Kaufmann
  
  Closes https://github.com/curl/curl/pull/1134

Daniel Stenberg (18 Dec 2016)
- CIPHERS.md: attempt to document TLS cipher names
  
  As the official docs seems really hard to keep track of and link to over
  time

- curl.1: generated after 6cce4dbf830

- cmdline-opts/post30X.d: fix the RFC references

- curl.1: regenerated
  
  Fixed trailing whitespace and numerous formatting glitches

- cmdline-opts: formatting fixes

- curl_easy_setopt.3: removed CURLOPT_SOCKS_PROXYTYPE

- tool_getparam.c: make comments use the up-to-date option names

- manpage-scan.pl: allow deprecated options to get removed from curl.1
  
  --krb4, --ftp-ssl and --ftp-ssl-reqd no longer need to be documented in the
  man page

- cmdline-opts/gen.pl: trim off trailing spaces

- cmdline-opts/proxy-tlsuser.d: remove trailing .d

- curl_easy_setopt.3: CURLOPT_PRE_PROXY instead of CURLOPT_SOCKS_PROXY

- symbols: removed two, added one

- cmdline-opts: include the man page split up files in the dist

- curl.1: generated with gen.pl
  
  This is the first time we replace the manually edited curt.1 with the
  generated one created by gen.pl and the individual option documentation
  pages.
  
  Do not edit this file, edit the individual pages and regenerate this
  output.
  
  This file will be generated by the build system soon and then removed
  from git.

- cmdline-opts: added some missing info

- CURLINFO_SSL_VERIFYRESULT.3: language

- HTTPS-PROXY docs: update/polish

- cmdline-opts/page-header: mention it is generated
  
  ... to avoid people from trying to edit the pending curl.1 version that
  gets generated by gen.pl

- preproxy: renamed what was added as SOCKS_PROXY
  
  CURLOPT_SOCKS_PROXY -> CURLOPT_PRE_PROXY
  
  Added the corresponding --preroxy command line option. Sets a SOCKS
  proxy to connect to _before_ connecting to a HTTP(S) proxy.

- curl: normal socks proxies still use CURLOPT_PROXY
  
  ... the newly introduced CURLOPT_SOCKS_PROXY is special and should be
  asked for specially. (Needs new code.)
  
  Unified proxy type to a single variable in the config struct.

- CURLOPT_SOCKS_PROXYTYPE: removed
  
  This was added as part of the SOCKS+HTTPS proxy merge but there's no
  need to support this as we prefer to have the protocol specified as a
  prefix instead.

- curl_multi_socket.3: fix typo

- checksrc: warn for assignments within if() expressions
  
  ... they're already frowned upon in our source code style guide, this
  now enforces the rule harder.

- checksrc: stricter no-space-before-paren enforcement
  
  In order to make the code style more uniform everywhere

- ISSUE_TEMPLATE: try mentioning known bugs/todo in new issue template

- RELEASE-NOTES: synced with 71a55534fa6

- [Adam Langley brought this change]

  openssl: don't use OpenSSL's ERR_PACK.
  
  ERR_PACK is an internal detail of OpenSSL. Also, when using it, a
  function name must be specified which is overly specific: the test will
  break whenever OpenSSL internally change things so that a different
  function creates the error.
  
  Closes #1157

Dan Fandrich (5 Dec 2016)
- test2032: Mark test as flaky

Jay Satiro (3 Dec 2016)
- [Jeremy Pearson brought this change]

  libcurl-multi.3: typo
  
  Closes https://github.com/curl/curl/pull/1153

Dan Fandrich (2 Dec 2016)
- test1281: added http as a required feature

Daniel Stenberg (2 Dec 2016)
- curl: support zero-length argument strings in config files
  
  ... like 'user-agent = ""'
  
  Adjusted test 71 to verify.

- http_proxy: simplify CONNECT response reading
  
  Since it now reads responses one byte a time, a loop could be removed
  and it is no longer limited to get the whole response within 16K, it is
  now instead only limited to 16K maximum header line lengths.

- tests: fix CONNECT test cases to be more strict
  
  ... as they broke with the cleaned up CONNECT handling

- CONNECT: read responses one byte at a time
  
  ... so that it doesn't read data that is actually coming from the
  remote. 2xx responses have no body from the proxy, that data is from the
  peer.
  
  Fixes #1132

- CONNECT: reject TE or CL in 2xx responses
  
  A server MUST NOT send any Transfer-Encoding or Content-Length header
  fields in a 2xx (Successful) response to CONNECT. (RFC 7231 section
  4.3.6)
  
  Also fixes the three test cases that did this.

- URL parser: reject non-numerical port numbers
  
  Test 1281 added to verify

Dan Fandrich (30 Nov 2016)
- runtests: made Servers: output be more consistent by removing OFF

- cyassl: fixed typo introduced in 4f8b1774

Michael Kaufmann (30 Nov 2016)
- CURLOPT_CONNECT_TO: Skip non-matching "connect-to" entries properly
  
  If a port number in a "connect-to" entry does not match, skip this
  entry instead of connecting to port 0.
  
  If a port number in a "connect-to" entry matches, use this entry
  and look no further.
  
  Reported-by: Jay Satiro
  Assisted-by: Jay Satiro, Daniel Stenberg
  
  Closes #1148

Daniel Stenberg (29 Nov 2016)
- BUGS: describe bug handling process

- RELEASE-NOTES: synced with 19613fb3

Jay Satiro (28 Nov 2016)
- http2: check nghttp2_session_set_local_window_size exists
  
  The function only exists since nghttp2 1.12.0.
  
  Bug: https://github.com/curl/curl/commit/a4d8888#commitcomment-19985676
  Reported-by: Michael Kaufmann

Daniel Stenberg (28 Nov 2016)
- [Anders Bakken brought this change]

  http2: Fix crashes when parent stream gets aborted
  
  Closes #1125

- cmdline-docs: more options converted and fixed
  
  Now all options are in the new system.

- gen: include footer in mainpage output

Jay Satiro (28 Nov 2016)
- lib1536: checksrc compliance

Daniel Stenberg (28 Nov 2016)
- cmdline-opts: more command line options documented
  
  Moved over to the new format

- curl: remove --proxy-ssl* options
  
  There's mostly likely no need to allow setting SSLv2/3 version for HTTPS
  proxy. Those protocols are insecure by design and deprecated.

- CURLOPT_PROXY_*.3: polished some proxy option man pages

Patrick Monnerat (26 Nov 2016)
- os400: support CURLOPT_PROXY_PINNEDPUBLICKEY
  
  Also define it in ILE/RPG binding.

Daniel Stenberg (26 Nov 2016)
- [Okhin Vasilij brought this change]

  curl_version_info: add CURL_VERSION_HTTPS_PROXY
  
  Closes #1142

- [Frank Gevaerts brought this change]

  tests: Add some testcases for recent new features.
  
  Add missing tests for CURLINFO_SCHEME, CURLINFO_PROTOCOL, %{scheme},
  and %{http_version}
  
  closes #1143

- [Frank Gevaerts brought this change]

  curl_easy_reset: clear info for CULRINFO_PROTOCOL and CURLINFO_SCHEME

- CURLOPT_PROXY_CAINFO.3: clarify proxy use

- CURLOPT_PROXY_CRLFILE.3: clarify https proxy and availability

- curl_easy_setopt.3: add CURLOPT_PROXY_PINNEDPUBLICKEY
  
  Follow-up to 4f8b17743d7c55a

- docs: include all opts man pages in dist
  
  Sorted the lists too.
  
  ... and include the new ones in the PDF and HTML generation targets

- [Thomas Glanzmann brought this change]

  HTTPS Proxy: Implement CURLOPT_PROXY_PINNEDPUBLICKEY

- [Thomas Glanzmann brought this change]

  url: proxy: Use 443 as default port for https proxies

- TODO: removed "HTTPS proxy"

- [Jan-E brought this change]

  winbuild: add config option ENABLE_NGHTTP2
  
  Closes #1141

Jay Satiro (24 Nov 2016)
- tool_urlglob: Improve sanity check in glob_range
  
  Prior to this change we depended on errno if strtol could not perform a
  conversion. POSIX says EINVAL *may* be set. Some implementations like
  Microsoft's will not set it if there's no conversion.
  
  Ref: https://github.com/curl/curl/commit/ee4f7660#commitcomment-19658189

- tool_help: Change description for --retry-connrefused
  
  Ref: https://github.com/curl/curl/pull/1064#issuecomment-260052409

Patrick Monnerat (25 Nov 2016)
- os400: sync ILE/RPG binding

Jay Satiro (24 Nov 2016)
- test1135: Fix curl_easy_duphandle prototype for code style
  
  Follow-up to dbadaeb which changed the style.

- x509asn1: Restore the parameter check in Curl_getASN1Element
  
  - Restore the removed parts of the parameter check.
  
  Follow-up to 945f60e which altered the parameter check.

Daniel Stenberg (25 Nov 2016)
- RELEASE-NOTES: update option counters

- [Frank Gevaerts brought this change]

  add CURLINFO_SCHEME, CURLINFO_PROTOCOL, and %{scheme}
  
  Adds access to the effectively used protocol/scheme to both libcurl and
  curl, both in string and numeric (CURLPROTO_*) form.
  
  Note that the string form will be uppercase, as it is just the internal
  string.
  
  As these strings are declared internally as const, and all other strings
  returned by curl_easy_getinfo() are de-facto const as well, string
  handling in getinfo.c got const-ified.
  
  Closes #1137

- RELEASE-NOTES: synced with 63198a4750aeb

- curl.1: the new --proxy options ship in 7.52.0

- checksrc: move open braces to comply with function declaration style

- checksrc: detect wrongly placed open braces in func declarations

- checksrc: white space edits to comply to stricter checksrc

- checksrc: verify ASTERISKNOSPACE
  
  Detects (char*) and 'char*foo' uses.

- checksrc: code style: use 'char *name' style

- checksrc: add ASTERISKSPACE
  
  Verifies a 'char *name' style, with no space after the asterisk.

- openssl: remove dead code
  
  Coverity CID 1394666

- [Okhin Vasilij brought this change]

  HTTPS-proxy: fixed mbedtls and polishing

- darwinssl: adopted to the HTTPS proxy changes
  
  It builds and runs all test cases. No adaptations for actual HTTPS proxy
  support has been made.

- gtls: fix indent to silence compiler warning
  
  vtls/gtls.c: In function ‘Curl_gtls_data_pending’:
  vtls/gtls.c:1429:3: error: this ‘if’ clause does not guard... [-Werror=misleading-indentation]
     if(conn->proxy_ssl[connindex].session &&
        ^~
        vtls/gtls.c:1433:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’
             return res;

- [Thomas Glanzmann brought this change]

  mbedtls: Fix compile errors

- [Alex Rousskov brought this change]

  proxy: Support HTTPS proxy and SOCKS+HTTP(s)
  
  * HTTPS proxies:
  
  An HTTPS proxy receives all transactions over an SSL/TLS connection.
  Once a secure connection with the proxy is established, the user agent
  uses the proxy as usual, including sending CONNECT requests to instruct
  the proxy to establish a [usually secure] TCP tunnel with an origin
  server. HTTPS proxies protect nearly all aspects of user-proxy
  communications as opposed to HTTP proxies that receive all requests
  (including CONNECT requests) in vulnerable clear text.
  
  With HTTPS proxies, it is possible to have two concurrent _nested_
  SSL/TLS sessions: the "outer" one between the user agent and the proxy
  and the "inner" one between the user agent and the origin server
  (through the proxy). This change adds supports for such nested sessions
  as well.
  
  A secure connection with a proxy requires its own set of the usual SSL
  options (their actual descriptions differ and need polishing, see TODO):
  
    --proxy-cacert FILE        CA certificate to verify peer against
    --proxy-capath DIR         CA directory to verify peer against
    --proxy-cert CERT[:PASSWD] Client certificate file and password
    --proxy-cert-type TYPE     Certificate file type (DER/PEM/ENG)
    --proxy-ciphers LIST       SSL ciphers to use
    --proxy-crlfile FILE       Get a CRL list in PEM format from the file
    --proxy-insecure           Allow connections to proxies with bad certs
    --proxy-key KEY            Private key file name
    --proxy-key-type TYPE      Private key file type (DER/PEM/ENG)
    --proxy-pass PASS          Pass phrase for the private key
    --proxy-ssl-allow-beast    Allow security flaw to improve interop
    --proxy-sslv2              Use SSLv2
    --proxy-sslv3              Use SSLv3
    --proxy-tlsv1              Use TLSv1
    --proxy-tlsuser USER       TLS username
    --proxy-tlspassword STRING TLS password
    --proxy-tlsauthtype STRING TLS authentication type (default SRP)
  
  All --proxy-foo options are independent from their --foo counterparts,
  except --proxy-crlfile which defaults to --crlfile and --proxy-capath
  which defaults to --capath.
  
  Curl now also supports %{proxy_ssl_verify_result} --write-out variable,
  similar to the existing %{ssl_verify_result} variable.
  
  Supported backends: OpenSSL, GnuTLS, and NSS.
  
  * A SOCKS proxy + HTTP/HTTPS proxy combination:
  
  If both --socks* and --proxy options are given, Curl first connects to
  the SOCKS proxy and then connects (through SOCKS) to the HTTP or HTTPS
  proxy.
  
  TODO: Update documentation for the new APIs and --proxy-* options.
  Look for "Added in 7.XXX" marks.

Patrick Monnerat (24 Nov 2016)
- Declare endian read functions argument as a const pointer.
  This is done for all functions of the form Curl_read[136][624]_[lb]e.

- Limit ASN.1 structure sizes to 256K. Prevent some allocation size overflows.
  See CRL-01-006.

Jay Satiro (22 Nov 2016)
- url: Fix conn reuse for local ports and interfaces
  
  - Fix connection reuse for when the proposed new conn 'needle' has a
  specified local port but does not have a specified device interface.
  
  Bug: https://curl.haxx.se/mail/lib-2016-11/0137.html
  Reported-by: bjt3[at]hotmail.com

Daniel Stenberg (21 Nov 2016)
- rand: pass in number of randoms as an unsigned argument

Jay Satiro (20 Nov 2016)
- rand: Fix potentially uninitialized result warning

Marcel Raad (19 Nov 2016)
- vtls: fix build warnings
  
  Fix warnings about conversions from long to time_t in openssl.c and
  schannel.c.
  
  Follow-up to de4de4e3c7c

Daniel Stenberg (18 Nov 2016)
- [Marcel Raad brought this change]

  lib: fix compiler warnings after de4de4e3c7c
  
  Visual C++ now complains about implicitly casting time_t (64-bit) to
  long (32-bit). Fix this by changing some variables from long to time_t,
  or explicitly casting to long where the public interface would be
  affected.
  
  Closes #1131

Peter Wu (17 Nov 2016)
- [Isaac Boukris brought this change]

  Don't mix unix domain sockets with regular ones
  
  When reusing a connection, make sure the unix domain
  socket option matches.

Jay Satiro (17 Nov 2016)
- tests: Fix HTTP2-Settings header for huge window size
  
  Follow-up to a4d8888. Changing the window size in that commit resulted
  in a different HTTP2-Settings upgrade header, causing test 1800 to fail.

- http2: Use huge HTTP/2 windows
  
  - Improve performance by using a huge HTTP/2 window size.
  
  Bug: https://github.com/curl/curl/issues/1102
  Reported-by: afrind@users.noreply.github.com
  Assisted-by: Tatsuhiro Tsujikawa

Daniel Stenberg (16 Nov 2016)
- cmdline-docs: more conversion

- gen: support 'protos'
  
  and warn on unrecognized lines

- gen: support 'single' to make an individual page man page

- cmdline-docs: more options converted over

- gen: support 'redirect'
  
  ... and warn for too long --help lines

- cmdline/gen: replace options in texts better

Jay Satiro (16 Nov 2016)
- http2: Fix address sanitizer memcpy warning
  
  - In Curl_http2_switched don't call memcpy when src is NULL.
  
  Curl_http2_switched can be called like:
  
  Curl_http2_switched(conn, NULL, 0);
  
  .. and prior to this change memcpy was then called like:
  
  memcpy(dest, NULL, 0)
  
  .. causing address sanitizer to warn:
  
  http2.c:2057:3: runtime error: null pointer passed as argument 2, which
  is declared to never be null

- tool_help: Clarify --dump-header only writes received headers

- curl.1: Clarify --dump-header only writes received headers

Daniel Stenberg (15 Nov 2016)
- [Alex Chan brought this change]

  docs: Spelling fixes

Kamil Dudka (15 Nov 2016)
- docs: the next release will be 7.52.0

Daniel Stenberg (15 Nov 2016)
- cmdline-opts: support generating the --help output

- [David Schweikert brought this change]

  darwinssl: fix SSL client certificate not found on MacOS Sierra
  
  Reviewed-by: Nick Zitzmann
  
  Closes #1105

- curl: add --fail-early to help output
  
  Fixes test 1139 failures
  
  Follow-up to f82bbe01c8835

- glob: fix [a-c] globbing regression
  
  Brought in ee4f76606cf
  
  Added test case 1280 to verify
  
  Reported-by: Dave Reisner
  
  Bug: https://github.com/curl/curl/commit/ee4f76606cfa4ee068bf28edd37c8dae7e8db317#commitcomment-19823146

- curl: add --fail-early
  
  Exit with an error on the first transfer error instead of continuing to
  do the rest of the URLs.
  
  Discussion: https://curl.haxx.se/mail/archive-2016-11/0038.html

- Curl_rand: fixed and moved to rand.c
  
  Now Curl_rand() is made to fail if it cannot get the necessary random
  level.
  
  Changed the proto of Curl_rand() slightly to provide a number of ints at
  once.
  
  Moved out from vtls, since it isn't a TLS function and vtls provides
  Curl_ssl_random() for this to use.
  
  Discussion: https://curl.haxx.se/mail/lib-2016-11/0119.html

- cmdline-opts: first test version of a new man page generator kit
  
  See MANPAGE.md for the description of how this works. Each command line
  option is now described in a separate .d file.

- time_t fix: follow-up to de4de4e3c7c
  
  Blah, I accidentally wrote size_t instead of time_t for two variables.
  
  Reported-by: Dave Reisner

- timeval: prefer time_t to hold seconds instead of long
  
  ... as long is still 32bit on modern 64bit windows machines, while
  time_t is generally 64bit.

Dan Fandrich (12 Nov 2016)
- tests: fixed variable might be clobbered warning
  
  This stops the compiler from potentially making invalid assumptions
  about the immutability of sdp and sap across the longjmp boundary.

Daniel Stenberg (12 Nov 2016)
- RELEASE-NOTES: synced with 346340808c

- URL-parser: for file://[host]/ URLs, the [host] must be localhost
  
  Previously, the [host] part was just ignored which made libcurl accept
  strange URLs misleading users. like "file://etc/passwd" which might've
  looked like it refers to "/etc/passwd" but is just "/passwd" since the
  "etc" is an ignored host name.
  
  Reported-by: Mike Crowe
  Assisted-by: Kamil Dudka

- test558: adapt to 0649433da

- openssl: make sure to fail in the unlikely event that PRNG seeding fails

- openssl: avoid unnecessary seeding if already done
  
  1.1.0+ does more of this by itself so we can avoid extra processing this
  way.

- openssl: RAND_status always exists in OpenSSL >= 0.9.7
  
  and remove RAND_screen from configure since nothing is using that
  function

- Curl_pgrsUpdate: use dedicated function for time passed

- realloc: use Curl_saferealloc to avoid common mistakes
  
  Discussed: https://curl.haxx.se/mail/lib-2016-11/0087.html

- [Daniel Hwang brought this change]

  curl: Add --retry-connrefused
  
  to consider ECONNREFUSED as a transient error.
  
  Closes #1064

- openssl: raise the max_version to 1.3 if asked for
  
  Now I've managed to negotiate TLS 1.3 with https://enabled.tls13.com/ when
  using boringssl.

Jay Satiro (9 Nov 2016)
- vtls: Fail on unrecognized param for CURLOPT_SSLVERSION
  
  - Fix GnuTLS code for CURL_SSLVERSION_TLSv1_2 that broke when the
  TLS 1.3 support was added in 6ad3add.
  
  - Homogenize across code for all backends the error message when TLS 1.3
  is not available to "<backend>: TLS 1.3 is not yet supported".
  
  - Return an error when a user-specified ssl version is unrecognized.
  
  ---
  
  Prior to this change our code for some of the backends used the
  'default' label in the switch statement (ie ver unrecognized) for
  ssl.version and treated it the same as CURL_SSLVERSION_DEFAULT.
  
  Bug: https://curl.haxx.se/mail/lib-2016-11/0048.html
  Reported-by: Kamil Dudka

Daniel Stenberg (9 Nov 2016)
- [Isaac Boukris brought this change]

  SPNEGO: Fix memory leak when authentication fails
  
  If SPNEGO fails, cleanup the negotiate handle right away.
  
  Fixes #1115
  
  Signed-off-by: Isaac Boukris <iboukris@gmail.com>
  Reported-by: ashman-p

- CODE_STYLE.md: link to INTERNALS.md correctly

- bump: next version will be 7.52.0

- RELEASE-NOTES: synced with dfcdaaba371e9a3

- examples/fileupload.c: fclose the file as well

- printf: fix ".*f" handling
  
  It would always use precision 1 instead of reading it from the argument
  list as intended.
  
  Reported-by: Ray Satiro
  
  Bug: #1113

- curl_formadd.3: *_FILECONTENT and *_FILE need the file to be kept
  
  Reported-by: Frank Gevaerts

Kamil Dudka (7 Nov 2016)
- nss: silence warning 'SSL_NEXT_PROTO_EARLY_VALUE not handled in switch'
  
  ... with nss-3.26.0 and newer
  
  Reported-by: Daniel Stenberg

Daniel Stenberg (7 Nov 2016)
- openssl: initial TLS 1.3 adaptions
  
  BoringSSL supports TLSv1.3 already, but these changes don't seem to be anough
  to get it working.

- ssh: check md5 fingerprints case insensitively (regression)
  
  Revert the change from ce8d09483eea but use the new function
  
  Reported-by: Kamil Dudka
  Bug: https://github.com/curl/curl/commit/ce8d09483eea2fcb1b50e323e1a8ed1f3613b2e3#commitcomment-19666146

Kamil Dudka (7 Nov 2016)
- curl: introduce the --tlsv1.3 option to force TLS 1.3
  
  Fully implemented with the NSS backend only for now.
  
  Reviewed-by: Ray Satiro

- vtls: support TLS 1.3 via CURL_SSLVERSION_TLSv1_3
  
  Fully implemented with the NSS backend only for now.
  
  Reviewed-by: Ray Satiro

- nss: map CURL_SSLVERSION_DEFAULT to NSS default
  
  ... but make sure we use at least TLSv1.0 according to libcurl API
  
  Reported-by: Cure53
  Reviewed-by: Ray Satiro

Daniel Stenberg (7 Nov 2016)
- s/cURL/curl
  
  We're mostly saying just "curl" in lower case these days so here's a big
  cleanup to adapt to this reality. A few instances are left as the
  project could still formally be considered called cURL.

Jay Satiro (7 Nov 2016)
- [Tatsuhiro Tsujikawa brought this change]

  http2: Don't send header fields prohibited by HTTP/2 spec
  
  Previously, we just ignored "Connection" header field.  But HTTP/2
  specification actually prohibits few more header fields.  This commit
  ignores all of them so that we don't send these bad header fields.
  
  Bug: https://curl.haxx.se/mail/archive-2016-10/0033.html
  Reported-by: Ricki Hirner
  
  Closes https://github.com/curl/curl/pull/1092

Daniel Stenberg (7 Nov 2016)
- curl.1: explain the SMTP data expected for -T
  
  Fixes #1107
  
  Reported-by: Adam Piggott

Peter Wu (6 Nov 2016)
- cmake: disable poll for macOS
  
  Mirrors the autotools behavior introduced with curl-7_50_3-83-ga34c7ce.
  
  Fixes #1089

Jay Satiro (5 Nov 2016)
- easy: Initialize info variables on easy init and duphandle
  
  - Call Curl_initinfo on init and duphandle.
  
  Prior to this change the statistical and informational variables were
  simply zeroed by calloc on easy init and duphandle. While zero is the
  correct default value for almost all info variables, there is one where
  it isn't (filetime initializes to -1).
  
  Bug: https://github.com/curl/curl/issues/1103
  Reported-by: Neal Poole

Daniel Stenberg (5 Nov 2016)
- [Mauro Rappa brought this change]

  curl -w: added more decimal digits to timing counters
  
  Now showing microsecond resolution.
  
  Closes #1106

Jakub Zakrzewski (4 Nov 2016)
- dist: add CMakeLists.txt to the tarball

Daniel Stenberg (4 Nov 2016)
- mbedtls: fix build with mbedtls versions < 2.4.0
  
  Regression added in 62a8095e714
  
  Reported-by: Tony Kelman
  
  Discussed in #1087

- configure: verify that compiler groks -Werror=partial-availability
  
  Reported-by: bemoody
  
  Fixes #1104

- docs: shorten and simplify the top comment in multi-uv.c
  
  and change URL to use https

- [Andrei Sedoi brought this change]

  docs: handle CURL_POLL_INOUT in multi-uv example

- [Andrei Sedoi brought this change]

  docs: multi-uv: don't use CURLMsg after cleanup

- [Andrei Sedoi brought this change]

  docs: remove unused variables in multi-uv example

- bump: start working on 7.51.1

- winbuild: remove strcase.obj from curl build
  
  Reported-by: Bruce Stephens
  
  Fixes #1098

Dan Fandrich (2 Nov 2016)
- msvc: removed a straggling reference to strequal.c
  
  Follow-up to 502acba2

Version 7.51.0 (2 Nov 2016)

Daniel Stenberg (2 Nov 2016)
- THANKS: synced with 7.51.0

- RELEASE-NOTES: 7.51.0

- ftp_done: don't clobber the passed in error code
  
  Coverity CID 1374359 pointed out the unused result value.

- ftp: remove dead code in ftp_done
  
  Coverity CID 1374358

Jay Satiro (1 Nov 2016)
- generate.bat: Include include/curl in libcurl VS projects
  
  .. because including those headers helps Visual Studio's Intellisense.

- generate.bat: Remove strcase.[ch] from curl tool VS projects
  
  ..because they're no longer needed in the tool build. strcase is still
  built by the libcurl project and exports curl_str(n)equal which is used
  by the curl tool.
  
  Bug: https://github.com/curl/curl/commit/9363f1a#all_commit_comments

Daniel Stenberg (2 Nov 2016)
- metalink: simplify the hex parsing function
  
  ... and now it avoids using the libcurl toupper() function

Michael Kaufmann (1 Nov 2016)
- file: fix compiler warning
  
  follow-up to 46133aa5

Dan Fandrich (1 Nov 2016)
- strcase: fixed Metalink builds by redefining checkprefix()
  
  ...to use the public function curl_strnequal(). This isn't ideal because
  it adds extra overhead to any internal calls to checkprefix.
  
  follow-up to 95bd2b3e

Daniel Stenberg (1 Nov 2016)
- curl.1: typo

- curl.1: expand on how multiple uses of -o looks
  
  Suggested-by: Dan Jacobson
  Issue: https://github.com/curl/curl/issues/1097

- tests/util: get a private strncasecompare clone
  
  ... since the curlx_* code no longer provides one and we don't link
  libcurl to these test servers.

- strcase: make the tool use curl_str[n]equal instead
  
  As they are after all part of the public API. Saves space and reduces
  complexity. Remove the strcase defines from the curlx_ family.
  
  Suggested-by: Dan Fandrich
  Idea: https://curl.haxx.se/mail/lib-2016-10/0136.html

Kamil Dudka (31 Oct 2016)
- gskit, nss: do not include strequal.h
  
  follow-up to 811a693b80

Dan Fandrich (31 Oct 2016)
- strcasecompare: include curl.h in strcase.c
  
  This should fix the "warning: 'curl_strequal' redeclared without
  dllimport attribute: previous dllimport ignored" message and subsequent
  link error on Windows because of the missing CURL_EXTERN on the
  prototype.

Daniel Stenberg (31 Oct 2016)
- strcase: fix the remaining rawstr users

- msvc builds: s/rawstr/strcase
  
  Follow-up to 811a693b

Dan Fandrich (31 Oct 2016)
- strcasecompare: replaced remaining rawstr.h with strcase.h
  
  This is a followup to commit 811a693b

Marcel Raad (31 Oct 2016)
- digest_sspi: fix include
  
  Fix compile break from 811a693b80

Dan Fandrich (31 Oct 2016)
- libauthretry: use the external function curl_strequal
  
  The internal version strcasecompare isn't available outside libcurl

Daniel Stenberg (31 Oct 2016)
- RELEASE-NOTES: synced with d14538d2501ef0da

- configure: raise the default minimum version for macos to 10.8
  
  follow-up to 4f8d0b6f02aa7043. Since the darwinssl code breaks
  otherwise. If you build without darwinssl 10.5 works fine.

- unit1301: keep testing curl_strequal
  
  as that is still part of the API, fix from 8fe4bd084412f30

- ldap: fix include
  
  Fix bug from 811a693b80

- url: remove unconditional idn2.h include
  
  Mistake brought by 9c91ec778104a

- curl_strequal: part of public API/ABI, needs to be kept
  
  These two public functions have been mentioned as deprecated since a
  very long time but since they are still part of the API and ABI we need
  to keep them around.

- strcase: s/strequal/strcasecompare
  
  some more follow-ups to 811a693b80

- ldap: fix strcase use
  
  follow-up to 811a693b80

- test165: adapted to the libidn2 use and IDNA2008 fix

- cookie: replace use of fgets() with custom version
  
  ... that will ignore lines that are too long to fit in the buffer.
  
  CVE-2016-8615
  
  Bug: https://curl.haxx.se/docs/adv_20161102A.html
  Reported-by: Cure53

- strcasecompare: all case insensitive string compares ignore locale now
  
  We had some confusions on when each function was used. We should not act
  differently on different locales anyway.

- strcasecompare: is the new name for strequal()
  
  ... to make it less likely that we forget that the function actually
  does case insentive compares. Also replaced several invokes of the
  function with a plain strcmp when case sensitivity is not an issue (like
  comparing with "-").

- ftp: check for previous patch must be case sensitive!
  
  ... otherwise example.com/PATH and example.com/path would be assumed to
  be the same and they usually aren't!

- SSH: check md5 fingerprint case sensitively

- connectionexists: use case sensitive user/password comparisons
  
  CVE-2016-8616
  
  Bug: https://curl.haxx.se/docs/adv_20161102B.html
  Reported-by: Cure53

- base64: check for integer overflow on large input
  
  CVE-2016-8617
  
  Bug: https://curl.haxx.se/docs/adv_20161102C.html
  Reported-by: Cure53

- krb5: avoid realloc(0)
  
  If the requested size is zero, bail out with error instead of doing a
  realloc() that would cause a double-free: realloc(0) acts as a free()
  and then there's a second free in the cleanup path.
  
  CVE-2016-8619
  
  Bug: https://curl.haxx.se/docs/adv_20161102E.html
  Reported-by: Cure53

- aprintf: detect wrap-around when growing allocation
  
  On 32bit systems we could otherwise wrap around after 2GB and allocate 0
  bytes and crash.
  
  CVE-2016-8618
  
  Bug: https://curl.haxx.se/docs/adv_20161102D.html
  Reported-by: Cure53

- range: reject char globs with missing end like '[L-]'
  
  ... which previously would lead to out of boundary reads.
  
  Reported-by: Luật Nguyễn

- glob_next_url: make sure to stay within the given output buffer

- range: prevent negative end number in a glob range
  
  CVE-2016-8620
  
  Bug: https://curl.haxx.se/docs/adv_20161102F.html
  Reported-by: Luật Nguyễn

- parsedate: handle cut off numbers better
  
  ... and don't read outside of the given buffer!
  
  CVE-2016-8621
  
  bug: https://curl.haxx.se/docs/adv_20161102G.html
  Reported-by: Luật Nguyễn

- escape: avoid using curl_easy_unescape() internally
  
  Since the internal Curl_urldecode() function has a better API.

- unescape: avoid integer overflow
  
  CVE-2016-8622
  
  Bug: https://curl.haxx.se/docs/adv_20161102H.html
  Reported-by: Cure53

- cookies: getlist() now holds deep copies of all cookies
  
  Previously it only held references to them, which was reckless as the
  thread lock was released so the cookies could get modified by other
  handles that share the same cookie jar over the share interface.
  
  CVE-2016-8623
  
  Bug: https://curl.haxx.se/docs/adv_20161102I.html
  Reported-by: Cure53

- TODO: remove IDNA2008

- idn: switch to libidn2 use and IDNA2008 support
  
  CVE-2016-8625
  
  Bug: https://curl.haxx.se/docs/adv_20161102K.html
  Reported-by: Christian Heimes

- test1246: verify URL parsing with host name ending with '#'

- urlparse: accept '#' as end of host name
  
  'http://example.com#@127.0.0.1/x.txt' equals a request to example.com
  for the '/' document with the rest of the URL being a fragment.
  
  CVE-2016-8624
  
  Bug: https://curl.haxx.se/docs/adv_20161102J.html
  Reported-by: Fernando Muñoz

Jay Satiro (31 Oct 2016)
- INTERNALS: better markdown (follow-up)
  
  - Wrap more words with underscores in backticks.
  
  Follow-up to 13f4913.

Daniel Stenberg (30 Oct 2016)
- INTERNALS: better markdown
  
  words with underscore need to be within `these`
  
  Bug: https://github.com/curl/curl-www/issues/19
  Reported-by : Jay Satiro

Jay Satiro (30 Oct 2016)
- mk-ca-bundle.vbs: Fix UTF-8 output
  
  - Change initial message box to mention delay when downloading/parsing.
  
  Since there is no progress meter it was somewhat unexpected that after
  choosing a filename nothing appears to happen, when actually the cert
  data is in the process of being downloaded and parsed.
  
  - Warn if OpenSSL is not present.
  
  - Use a UTF-8 stream to make the ca-bundle data.
  
  - Save the UTF-8 ca-bundle stream as binary so that no BOM is added.
  
  ---
  
  This is a follow-up to d2c6d15 which switched mk-ca-bundle.vbs output to
  ANSI due to corrupt UTF-8 output, now fixed.
  
  This change completes making the default certificate bundle output of
  mk-ca-bundle.vbs as close as possible to that of mk-ca-bundle.pl, which
  should make it easier to review any difference between their output.
  
  Ref: https://github.com/curl/curl/pull/1012

Daniel Stenberg (28 Oct 2016)
- BINDINGS: converted to markdown
  
  To make it render better on the web site, at the price of it becoming
  slightly less readable as text.

Jay Satiro (27 Oct 2016)
- CURLMOPT_MAX_PIPELINE_LENGTH.3: Clarify it's not for HTTP/2
  
  - Clarify that this option is only for HTTP/1.1 pipelining.
  
  Bug: https://github.com/curl/curl/issues/1059
  Reported-by: Jeroen Ooms
  
  Assisted-by: Daniel Stenberg

Daniel Stenberg (27 Oct 2016)
- KNOWN_BUGS: HTTP/2 server push enabled when no pushes can be accepted
  
  Closes #927

- KNOWN_BUGS: c-ares deviates from stock resolver on http://1346569778
  
  Closes #893

Michael Osipov (27 Oct 2016)
- configure.in: Fix test syntax
  
  Some versions of test allow == for equality, but others (such as the HP-UX
  version) do not.  Use a single = for correctness.
  
  Error output:
  checking for monotonic clock_gettime... ./configure[20445]: ==: A test command parameter is not valid.

Daniel Stenberg (27 Oct 2016)
- SECURITY: minor updates
  
  - we allow the security push up to 48 hours before the release
  
  - add a mention about possible pre-notifications
  
  - lower case the 'curl-security' title

- [Andrei Sedoi brought this change]

  docs: fix req->data in multi-uv example
  
  Closes #1088

- mbedtls: stop using deprecated include file
  
  Reported-by: wyattoday
  Fixes #1087

Kamil Dudka (25 Oct 2016)
- [Martin Frodl brought this change]

  nss: fix tight loop in non-blocking TLS handhsake over proxy
  
  ... in case the handshake completes before entering
  CURLM_STATE_PROTOCONNECT
  
  Bug: https://bugzilla.redhat.com/1388162

Jay Satiro (25 Oct 2016)
- mk-ca-bundle: Update the vbscript version
  
  Bring the VBScript version more in line with the perl version:
  
  - Change timestamp to UTC.
  
  - Change URL retrieval to HTTPS-only by default.
  
  - Comment out the options that disabled SSL cert checking by default.
  
  - Assume OpenSSL is present, get SHA256. And add a flag to toggle it.
  
  - Fix cert issuer name output.
  
  The cert issuer output is now ansi, converted from UTF-8. Prior to this
  it was corrupt UTF-8. It turns out though we can work with UTF-8 the
  FSO object that writes ca-bundle can't write UTF-8, so there will have
  to be some alternative if UTF-8 is needed (like an ADODB.Stream).
  
  - Disable the certificate text info feature.
  
  The certificate text info doesn't work properly with any recent OpenSSL.

Daniel Stenberg (24 Oct 2016)
- TODO: indent code to make it render properly

- TODO: Remove the generated include file

- TODO: add "--retry should resume"
  
  See #1084

- mk-ca-bundle.1: document -k
  
  Brought in 1ad2bdcf110266c. Now does HTTPS by default and needs -k to
  fall back to plain HTTP.

- [Jay Satiro brought this change]

  mk-ca-bundle: Change URL retrieval to HTTPS-only by default
  
  - Change all predefined Mozilla URLs to HTTPS (Gregory Szorc).
  
  - New option -k to allow URLs other than HTTPS and enable HTTP fallback.
  
  Prior to this change the default URL retrieval mode was to fall back to
  HTTP if HTTPS didn't work.
  
  Reported-by: Gregory Szorc
  
  Closes #1012

- RELEASE-NOTES: synced with 50ee3aaf1a9b22d

Dan Fandrich (23 Oct 2016)
- INSTALL.md: Updated minimum file sizes for 7.50.3

Daniel Stenberg (22 Oct 2016)
- multi: force connections to get closed in close_all_connections
  
  Several independent reports on infinite loops hanging in the
  close_all_connections() function when closing a multi handle, can be
  fixed by first marking the connection to get closed before calling
  Curl_disconnect.
  
  This is more fixing-the-symptom rather than the underlying problem
  though.
  
  Bug: https://curl.haxx.se/mail/lib-2016-10/0011.html
  Bug: https://curl.haxx.se/mail/lib-2016-10/0059.html
  
  Reported-by: Dan Fandrich, Valentin David, Miloš Ljumović

- [Anders Bakken brought this change]

  curl_multi_remove_handle: fix a double-free
  
  In short the easy handle needs to be disconnected from its connection at
  this point since the connection still is serving other easy handles.
  
  In our app we can reliably reproduce a crash in our http2 stress test
  that is fixed by this change. I can't easily reproduce the same test in
  a small example.
  
  This is the gdb/asan output:
  
  ==11785==ERROR: AddressSanitizer: heap-use-after-free on address 0xe9f4fb80 at pc 0x09f41f19 bp 0xf27be688 sp 0xf27be67c
  READ of size 4 at 0xe9f4fb80 thread T13 (RESOURCE_HTTP)
      #0 0x9f41f18 in curl_multi_remove_handle /path/to/source/3rdparty/curl/lib/multi.c:666
  
  0xe9f4fb80 is located 0 bytes inside of 1128-byte region [0xe9f4fb80,0xe9f4ffe8)
  freed by thread T13 (RESOURCE_HTTP) here:
      #0 0xf7b1b5c2 in __interceptor_free /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_malloc_linux.cc:45
      #1 0x9f7862d in conn_free /path/to/source/3rdparty/curl/lib/url.c:2808
      #2 0x9f78c6a in Curl_disconnect /path/to/source/3rdparty/curl/lib/url.c:2876
      #3 0x9f41b09 in multi_done /path/to/source/3rdparty/curl/lib/multi.c:615
      #4 0x9f48017 in multi_runsingle /path/to/source/3rdparty/curl/lib/multi.c:1896
      #5 0x9f490f1 in curl_multi_perform /path/to/source/3rdparty/curl/lib/multi.c:2123
      #6 0x9c4443c in perform /path/to/source/src/net/resourcemanager/ResourceManagerCurlThread.cpp:854
      #7 0x9c445e0 in ...
      #8 0x9c4cf1d in ...
      #9 0xa2be6b5 in ...
      #10 0xf7aa5780 in asan_thread_start /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_interceptors.cc:226
      #11 0xf4d3a16d in __clone (/lib/i386-linux-gnu/libc.so.6+0xe716d)
  
  previously allocated by thread T13 (RESOURCE_HTTP) here:
      #0 0xf7b1ba27 in __interceptor_calloc /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_malloc_linux.cc:70
      #1 0x9f7dfa6 in allocate_conn /path/to/source/3rdparty/curl/lib/url.c:3904
      #2 0x9f88ca0 in create_conn /path/to/source/3rdparty/curl/lib/url.c:5797
      #3 0x9f8c928 in Curl_connect /path/to/source/3rdparty/curl/lib/url.c:6438
      #4 0x9f45a8c in multi_runsingle /path/to/source/3rdparty/curl/lib/multi.c:1411
      #5 0x9f490f1 in curl_multi_perform /path/to/source/3rdparty/curl/lib/multi.c:2123
      #6 0x9c4443c in perform /path/to/source/src/net/resourcemanager/ResourceManagerCurlThread.cpp:854
      #7 0x9c445e0 in ...
      #8 0x9c4cf1d in ...
      #9 0xa2be6b5 in ...
      #10 0xf7aa5780 in asan_thread_start /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_interceptors.cc:226
      #11 0xf4d3a16d in __clone (/lib/i386-linux-gnu/libc.so.6+0xe716d)
  
  SUMMARY: AddressSanitizer: heap-use-after-free /path/to/source/3rdparty/curl/lib/multi.c:666 in curl_multi_remove_handle
  Shadow bytes around the buggy address:
    0x3d3e9f20: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9f30: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9f40: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9f50: fd fd fd fd fd fd fd fd fd fd fd fd fd fa fa fa
    0x3d3e9f60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  =>0x3d3e9f70:[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9f80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9f90: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9fa0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9fb0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
    0x3d3e9fc0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  Shadow byte legend (one shadow byte represents 8 application bytes):
    Addressable:           00
    Partially addressable: 01 02 03 04 05 06 07
    Heap left redzone:       fa
    Heap right redzone:      fb
    Freed heap region:       fd
    Stack left redzone:      f1
    Stack mid redzone:       f2
    Stack right redzone:     f3
    Stack partial redzone:   f4
    Stack after return:      f5
    Stack use after scope:   f8
    Global redzone:          f9
    Global init order:       f6
    Poisoned by user:        f7
    Container overflow:      fc
    Array cookie:            ac
    Intra object redzone:    bb
    ASan internal:           fe
    Left alloca redzone:     ca
    Right alloca redzone:    cb
  ==11785==ABORTING
  
  Thread 14 "RESOURCE_HTTP" received signal SIGABRT, Aborted.
  [Switching to Thread 0xf27bfb40 (LWP 12324)]
  0xf7fd8be9 in __kernel_vsyscall ()
   (gdb) bt
   #0  0xf7fd8be9 in __kernel_vsyscall ()
   #1  0xf4c7ee89 in __GI_raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:54
   #2  0xf4c803e7 in __GI_abort () at abort.c:89
   #3  0xf7b2ef2e in __sanitizer::Abort () at /opt/toolchain/src/gcc-6.2.0/libsanitizer/sanitizer_common/sanitizer_posix_libcdep.cc:122
   #4  0xf7b262fa in __sanitizer::Die () at /opt/toolchain/src/gcc-6.2.0/libsanitizer/sanitizer_common/sanitizer_common.cc:145
   #5  0xf7b21ab3 in __asan::ScopedInErrorReport::~ScopedInErrorReport (this=0xf27be171, __in_chrg=<optimized out>) at /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_report.cc:689
   #6  0xf7b214a5 in __asan::ReportGenericError (pc=166993689, bp=4068206216, sp=4068206204, addr=3925146496, is_write=false, access_size=4, exp=0, fatal=true) at /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_report.cc:1074
   #7  0xf7b21fce in __asan::__asan_report_load4 (addr=3925146496) at /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_rtl.cc:129
   #8  0x09f41f19 in curl_multi_remove_handle (multi=0xf3406080, data=0xde582400) at /path/to/source3rdparty/curl/lib/multi.c:666
   #9  0x09f6b277 in Curl_close (data=0xde582400) at /path/to/source3rdparty/curl/lib/url.c:415
   #10 0x09f3354e in curl_easy_cleanup (data=0xde582400) at /path/to/source3rdparty/curl/lib/easy.c:860
   #11 0x09c6de3f in ...
   #12 0x09c378c5 in ...
   #13 0x09c48133 in ...
   #14 0x09c4d092 in ...
   #15 0x0a2be6b6 in ...
   #16 0xf7aa5781 in asan_thread_start (arg=0xf2d22938) at /opt/toolchain/src/gcc-6.2.0/libsanitizer/asan/asan_interceptors.cc:226
   #17 0xf5de52b5 in start_thread (arg=0xf27bfb40) at pthread_create.c:333
   #18 0xf4d3a16e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:114
  
  Fixes #1083

- testcurl.1: fix the URL to the autobuild summary

- testcurl.1: update URLs

- INSTALL: converted to markdown => INSTALL.md
  
  Also heavily edited for content. Removed lots of old cruft that we added
  like 10+ years ago that is likely incorrect by now.
  
  Also removed INSTALL.devcpp for same reason.

- [Martin Storsjo brought this change]

  configure: Check for other variants of the -m*os*-version-min flags
  
  In addition to -miphoneos-version-min, the same version can be set
  using -mios-version-min. And for WatchOS and TvOS, there's
  -mwatchos-version-min and -mtvos-version-min.

- configure: set min version flags for builds on mac
  
  This helps building binaries that can work on multiple macOS versions.
  
  Help-by: Martin Storsjö
  
  Fixes #1069

- curl_multi_add_handle: set timeouts in closure handles
  
  The closure handle only ever has default timeouts set. To improve the
  state somewhat we clone the timeouts from each added handle so that the
  closure handle always has the same timeouts as the most recently added
  easy handle.
  
  Fixes #739

- configure/CURL_CHECK_FUNC_POLL: disable poll completely on mac
  
  ... so that the same libcurl build easier can run on any version.
  
  Follow-up to issue #1057

- RELEASE-NOTES: synced with f36f8c14551efc6772

- test14xx: fixed --libcurl output tests again after 8e8afa82cbb

- s/cURL/curl
  
  The tool was never called cURL, only the project. But even so, we have
  more and more over time switched to just use lower case.

- polarssl: indented code, removed unused variables

- polarssl: reduce #ifdef madness with a macro

- polarssl: fix unaligned SSL session-id lock

- Curl_polarsslthreadlock_thread_setup: clear array at init
  
  ... since if it fails to init the entire array and then tries to clean
  it up, it would attempt to work on an uninitialized pointer.

- curl: set INTERLEAVEDATA too
  
  As otherwise the callback could be called with a NULL pointer when RTSP
  data is provided.

- gopher: properly return error for poll failures

- select: switch to macros in uppercase
  
  Curl_select_ready() was the former API that was replaced with
  Curl_select_check() a while back and the former arg setup was provided
  with a define (in order to leave existing code unmodified).
  
  Now we instead offer SOCKET_READABLE and SOCKET_WRITABLE for the most
  common shortcuts where only one socket is checked. They're also more
  visibly macros.

- select: use more proper macro-looking names
  
  ... so that it becomes more obvious in the code what is what. Also added
  a typecast for one of the calculations.

- Curl_socket_check: add extra check to avoid integer overflow

- maketgz: make it support "only" generating version info
  
  ... to allow you to update the local repository with the given version
  number data.

Jay Satiro (17 Oct 2016)
- url: skip to-be-closed connections when pipelining (follow-up)
  
  - Change back behavior so that pipelining is considered possible for
  connections that have not yet reached the protocol level.
  
  This is a follow-up to e5f0b1a which had changed the behavior of
  checking if pipelining is possible to ignore connections that had
  'bits.close' set. Connections that have not yet reached the protocol
  level also have that bit set, and we need to consider pipelining
  possible on those connections.

Daniel Stenberg (17 Oct 2016)
- HTTP2: mention the tool's limited support

- RELEASE-NOTES: synced with a1a5cd04877fd6fd

- [David Woodhouse brought this change]

  curl: do not set CURLOPT_SSLENGINEDEFAULT automatically
  
  There were bugs in the PKCS#11 engine, and fixing them triggers bugs in
  OpenSSL. Just don't get involved; there's no need to be making the
  engine methods the default anyway.
  
  https://github.com/OpenSC/libp11/pull/108
  https://github.com/openssl/openssl/pull/1639
  
  Merges #1042

- KNOWN_BUGS: two more existing problems

Marcel Raad (16 Oct 2016)
- win: fix Universal Windows Platform build
  
  This fixes a merge error in commit 7f3df80 caused by commit 332e8d6.
  
  Additionally, this changes Curl_verify_windows_version for Windows App
  builds to assume to always be running on the target Windows version.
  There seems to be no way to determine the Windows version from a
  UWP app. Neither GetVersion(Ex), nor VerifyVersionInfo, nor the
  Version Helper functions are supported.
  
  Bug: https://github.com/curl/curl/pull/820#issuecomment-250889878
  Reported-by: Paul Joyce
  
  Closes https://github.com/curl/curl/pull/1048

Daniel Stenberg (16 Oct 2016)
- KNOWN_BUGS: minor formatting edit

Jay Satiro (14 Oct 2016)
- [Rider Linden brought this change]

  url: skip to-be-closed connections when pipelining
  
  No longer attempt to use "doomed" to-be-closed connections when
  pipelining. Prior to this change connections marked for deletion (e.g.
  timeout) would be erroneously used, resulting in sporadic crashes.
  
  As originally reported and fixed by Carlo Wood (origin unknown).
  
  Bug: https://github.com/curl/curl/issues/627
  Reported-by: Rider Linden
  
  Closes https://github.com/curl/curl/pull/1075
  Participation-by: nopjmp@users.noreply.github.com

Daniel Stenberg (13 Oct 2016)
- vtls: only re-use session-ids using the same scheme
  
  To make it harder to do cross-protocol mistakes

Jay Satiro (11 Oct 2016)
- [Torben Dannhauer brought this change]

  dist: add missing cmake modules to the tarball
  
  Closes https://github.com/curl/curl/pull/1070

Daniel Stenberg (11 Oct 2016)
- configure: detect the broken poll() in macOS 10.12
  
  Fixes #1057

- dist: remove PDF and HTML converted docs from the releases

- [Remo E brought this change]

  cmake: add nghttp2 support
  
  Closes #922

- [Andreas Streichardt brought this change]

  resolve: add error message when resolving using SIGALRM
  
  Closes #1066

- GIT-INFO: remove the Mac 10.1-specific details
  
  There shouldn't be many devs out there anymore using such outdated macOS
  versions. And it removes the dead link.
  
  Closes #1049

- RELEASE-NOTES: spellfix

- RELEASE-NOTES: synced with 82720490628cb53a
  
  5 more fixes, 2 more contributors

- [Tobias Stoeckmann brought this change]

  smb: properly check incoming packet boundaries
  
  Not all reply messages were properly checked for their lengths, which
  made it possible to access uninitialized memory (but this does not lead
  to out of boundary accesses).
  
  Closes #1052

- test557: verify printf() with 128 and 129 arguments

- mprintf: return error on too many arguments
  
  128 arguments should be enough for everyone

- ftp: fix Curl_ftpsendf()
  
  ... it no longer takes printf() arguments since it was only really taken
  advantage by one user and it was not written and used in a safe
  way. Thus the 'f' is removed from the function name and the proto is
  changed.
  
  Although the current code wouldn't end up in badness, it was a risk that
  future changes could end up springf()ing too large data or passing in a
  format string inadvertently.

- formpost: avoid silent snprintf() truncation
  
  The previous use of snprintf() could make libcurl silently truncate some
  input data and not report that back on overly large input, which could
  make data get sent over the network in a bad format.
  
  Example:
  
   $ curl --form 'a=b' -H "Content-Type: $(perl -e 'print "A"x4100')"

- TODO: build: Enable PIE and RELRO by default

- TODO: Support better than MD5 hostkey hash (for ssh)

- [Daniel Gustafsson brought this change]

  tests: Fix a small typo in the tests README (#1060)
  
  The subdirectory for logs in tests/ is named log/ without an 's'
  at the end.

- TODO: Introduce --fail-fast to exit on first transfer fail
  
  See #1054

- TODO: Leave secure cookies alone

- [Rainer Müller brought this change]

  CURLOPT_DEBUGFUNCTION.3: unused argument warning (#1056)
  
  The 'userp' argument is unused in this example code.

- TODO: TCP Fast Open for windows

- RELEASE-NOTES: synced with 8fd2a754f0de

- CURLOPT_KEEP_SENDING_ON_ERROR.3: mention when it is added

- memdup: use 'void *' as return and source type

- TODO: Add easy argument to formpost functions

- formpost: trying to attach a directory no longer crashes
  
  The error path would previously add a freed entry to the linked list.
  
  Reported-by: Toby Peterson
  
  Fixes #1053

- [Sergei Kuzmin brought this change]

  cookies: same domain handling changed to match browser behavior
  
  Cokie with the same domain but different tailmatching property are now
  considered different and do not replace each other.  If header contains
  following lines then two cookies will be set: Set-Cookie: foo=bar;
  domain=.foo.com; expires=Thu Mar 3 GMT 8:56:27 2033 Set-Cookie: foo=baz;
  domain=foo.com; expires=Thu Mar 3 GMT 8:56:27 2033
  
  This matches Chrome, Opera, Safari, and Firefox behavior. When sending
  stored tokens to foo.com Chrome, Opera, Firefox store send them in the
  stored order, while Safari pre-sort the cookies.
  
  Closes #1050

- [Stephen Brokenshire brought this change]

  FAQ: Fix typos in section 5.14 (#1047)
  
  Type required for YourClass::func C++ function (using size_t in line
  with the documentation for CURLOPT_WRITEFUNCTION) and missing second
  colon when specifying the static function for CURLOPT_WRITEFUNCTION.

- [Sebastian Mundry brought this change]

  KNOWN_BUGS: Fix typos in section 5.8.
  
  Closes #1046

- [mundry brought this change]

  CONTRIBUTE.md: Fix typo in 'About pull requests' section. (#1045)

- curl.1: --trace supports % for sending to stderr!

- KNOWN_BUGS: 5.8 configure finding libs in wrong directory

Dan Fandrich (24 Sep 2016)
- configure: Fixed builds with libssh2 in a custom location
  
  A libssh2 library in the standard system location was being used in
  preference to the desired one while linking.

Daniel Stenberg (23 Sep 2016)
- SECURITY: remove the top ascii logo

Michael Kaufmann (22 Sep 2016)
- New libcurl option to keep sending on error
  
  Add the new option CURLOPT_KEEP_SENDING_ON_ERROR to control whether
  sending the request body shall be completed when the server responds
  early with an error status code.
  
  This is suitable for manual NTLM authentication.
  
  Reviewed-by: Jay Satiro
  
  Closes https://github.com/curl/curl/pull/904

Kamil Dudka (22 Sep 2016)
- nss: add chacha20-poly1305 cipher suites if supported by NSS

- nss: add cipher suites using SHA384 if supported by NSS

- nss: fix typo in ecdhe_rsa_null cipher suite string
  
  As it seems to be a rarely used cipher suite (for securely established
  but _unencrypted_ connections), I believe it is fine not to provide an
  alias for the misspelled variant.

Jay Satiro (21 Sep 2016)
- docs: Remove that --proto is just used for initial retrieval
  
  .. and add that --proto-redir and CURLOPT_REDIR_PROTOCOLS do not
  override protocols denied by --proto and CURLOPT_PROTOCOLS.
  
  - Add a test to enforce: --proto deny must override --proto-redir allow
  
  Closes https://github.com/curl/curl/pull/1031

Daniel Stenberg (21 Sep 2016)
- dist: add CurlSymbolHiding.cmake to the tarball
  
  Follow-up to 6140dfcf3e784
  
  Reported-by: Alexander Sinditskiy

- curl_global_cleanup.3: don't unload the lib with sub threads running
  
  Discussed in #997
  
  Assisted-by: Jay Satiro

- MAIL-ETIQUETTE: language

Jay Satiro (20 Sep 2016)
- easy: Reset all statistical session info in curl_easy_reset
  
  Bug: https://github.com/curl/curl/issues/1017
  Reported-by: Jeroen Ooms

Daniel Stenberg (19 Sep 2016)
- RELEASE-NOTES: synced with 79607eec51055

Jay Satiro (19 Sep 2016)
- [Daniel Gustafsson brought this change]

  darwinssl: Fix typo in comment
  
  Closes https://github.com/curl/curl/pull/1028

Daniel Stenberg (19 Sep 2016)
- [Bernard Spil brought this change]

  libressl: fix version output
  
  LibreSSL defines `OPENSSL_VERSION_NUMBER` as `0x20000000L` for all
  versions returning `LibreSSL/2.0.0` for any LibreSSL version.
  
  This change provides a local OpenSSL_version_num function replacement
  returning LIBRESSL_VERSION_NUMBER instead.
  
  Closes #1029

- [rugk brought this change]

  TODO: Add PINNEDPUBLICKEY - HPKP compatibility, HSTS & HPKP
  
  Closes #1025
  Closes #1026
  Closes #1027

- openssl: don't call ERR_remote_thread_state on >= 1.1.0
  
  Follow-up fix to d9321562

- openssl: don’t call CRYTPO_cleanup_all_ex_data
  
  The OpenSSL function CRYTPO_cleanup_all_ex_data() cannot be called
  multiple times without crashing - and other libs might call it! We
  basically cannot call it without risking a crash. The function is a
  no-op since OpenSSL 1.1.0.
  
  Not calling this function only risks a small memory leak with OpenSSL <
  1.1.0.
  
  Bug: https://curl.haxx.se/mail/lib-2016-09/0045.html
  Reported-by: Todd Short

- TODO: Support SSLKEYLOGFILE

Jay Satiro (18 Sep 2016)
- CURLOPT_PINNEDPUBLICKEY.3: fix the AVAILABILITY formatting

Nick Zitzmann (18 Sep 2016)
- darwinssl: disable RC4 cipher-suite support
  
  RC4 was a nice alternative to CBC back in the days of BEAST, but it's insecure and obsolete now.

- configure: change "iOS/Mac OS X native" to "Apple OS native"
  
  Since I first wrote that text, Apple introduced tvOS and watchOS, and renamed "Mac OS X" to "macOS." Let's make the text a little more inclusive, since curl can be built for all four operating systems.

Jay Satiro (18 Sep 2016)
- test2048: fix url

- examples/imap-append: Set size of data to be uploaded
  
  Prior to this commit this example failed with error
  'Cannot APPEND with unknown input file size'.
  
  Bug: https://github.com/curl/curl/issues/1008
  Reported-by: lukaszgn@users.noreply.github.com
  
  Closes https://github.com/curl/curl/pull/1011

Daniel Stenberg (16 Sep 2016)
- [Tony Kelman brought this change]

  LICENSE-MIXING.md: update with mbedTLS dual licensing
  
  Recent versions of mbedTLS are available under either Apache 2.0 or GPL
  2.0, see https://tls.mbed.org/how-to-get
  
  Closes #1019

- KNOWN_BUGS: chunked-encoded requests with HTTP/2 is fixed

- http2: debug ouput sent HTTP/2 request headers

- http: accept "Transfer-Encoding: chunked" for HTTP/2 as well
  
  ... but don't send the actual header over the wire as it isn't accepted.
  Chunked uploading is still triggered using this method.
  
  Fixes #1013
  Fixes #662

- openssl: fix per-thread memory leak usiong 1.0.1 or 1.0.2
  
  OpenSSL 1.0.1 and 1.0.2 build an error queue that is stored per-thread
  so we need to clean it when easy handles are freed, in case the thread
  will be killed in which the easy handle was used. All OpenSSL code in
  libcurl should extract the error in association with the error already
  so clearing this queue here should be harmless at worst.
  
  Fixes #964

- RELEASE-NOTES: reset and go toward 7.51.0 (again)

Version 7.50.3 (14 Sep 2016)

Daniel Stenberg (14 Sep 2016)
- THANKS: updated with curl 7.50.3 contributors

- RELEASE-NOTES: curl 7.50.3

- test1605: verify negative input lengths to (un)escape functions

- curl_easy_unescape: deny negative string lengths as input
  
  CVE-2016-7167
  
  Bug: https://curl.haxx.se/docs/adv_20160914.html

- curl_easy_escape: deny negative string lengths as input
  
  CVE-2016-7167
  
  Bug: https://curl.haxx.se/docs/adv_20160914.html

- curl: make --create-dirs on windows grok both forward and backward slashes
  
  Reported-by: Ryan Scott
  
  Fixes #1007

- RELEASE-NOTES: synced with 665694979b6

- [Tony Kelman brought this change]

  mbedtls: switch off NTLM in build if md4 isn't available
  
  NTLM support with mbedTLS was added in 497e7c9 but requires that mbedTLS
  is built with the MD4 functions available, which it isn't in default
  builds. This now adapts if the funtion isn't there and builds libcurl
  without NTLM support if so.
  
  Fixes #1004

Jay Satiro (12 Sep 2016)
- CODE_STYLE: fix long-line guideline
  
  - Change maximum allowed line length from 80 to 79.

- CODE_STYLE: add column alignment section
  
  Note that since the added examples are for column alignment I had to
  encapsulate with ~~~c markdown to preserve their alignment.

Peter Wu (11 Sep 2016)
- cmake: fix curl-config --static-libs
  
  The `curl-config --static-libs` command should not output paths like
  -l/usr/lib/libssl.so, instead print the absolute path without `-l`.
  
  This also removes the confusing message "Static linking is broken" which
  was printed because curl-config --static-libs was disfunctional even
  though the static libcurl.a library works properly.
  
  Fixes https://github.com/curl/curl/issues/841

Daniel Stenberg (11 Sep 2016)
- http: refuse to pass on response body with NO_NODY was set
  
  ... like when a HTTP/0.9 response comes back without any headers at all
  and just a body this now prevents that body from being sent to the
  callback etc.
  
  Adapted test 1144 to verify.
  
  Fixes #973
  
  Assisted-by: Ray Satiro

- RELEASE-NOTES: synced with 257bf3ac67eb6

Jakub Zakrzewski (10 Sep 2016)
- CMake: Don't build unit tests if private symbols are hidden
  
  This only excludes building unit tests from default build ( 'all' Make
  target or "Build Solution" in VisualStudio). The projects and Make
  targets will still be generated and shown in supporting IDEs.
  
  Fixes https://github.com/curl/curl/issues/981
  Reported-by: Randy Armstrong
  
  Closes https://github.com/curl/curl/pull/990

- CMake: Try to (un-)hide private library symbols
  
  Detect support for compiler symbol visibility flags and apply those
  according to CURL_HIDDEN_SYMBOLS option.
  It should work true to the autotools build except it tries to unhide
  symbols on Windows when requested and prints warning if it fails.
  
  Ref: https://github.com/curl/curl/issues/981#issuecomment-242665951
  Reported-by: Daniel Stenberg

Daniel Stenberg (9 Sep 2016)
- openssl: fix bad memory free (regression)
  
  ... by partially reverting f975f06033b1. The allocation could be made by
  OpenSSL so the free must be made with OPENSSL_free() to avoid problems.
  
  Reported-by: Harold Stuart
  Fixes #1005

- http2: support > 64bit sized uploads
  
  ... by making sure we don't count down the "upload left" counter when the
  uploaded size is unknown and then it can be allowed to continue forever.
  
  Fixes #996

Jay Satiro (7 Sep 2016)
- errors: new alias CURLE_WEIRD_SERVER_REPLY (8)
  
  Since we're using CURLE_FTP_WEIRD_SERVER_REPLY in imap, pop3 and smtp as
  more of a generic "failed to parse" introduce an alias without FTP in
  the name.
  
  Closes https://github.com/curl/curl/pull/975

Daniel Stenberg (7 Sep 2016)
- bump: toward 7.51.0

- HISTORY: remove ascii logo to render nicer on web

- curl: whitelist use of strtok() in non-threaded context

- checksrc: detect strtok() use
  
  ... as that function slipped through once before.

GitHub (7 Sep 2016)
- [Viktor Szakats brought this change]

  mk-ca-bundle.pl: use SHA256 instead of SHA1
  
  This hash is used to verify the original downloaded certificate bundle
  and also included in the generated bundle's comment header. Also
  rename related internal symbols to algorithm-agnostic names.

Version 7.50.2 (7 Sep 2016)

Daniel Stenberg (7 Sep 2016)
- RELEASE-NOTES: curl 7.50.2 release

- THANKS: updated for 7.50.2

Jay Satiro (6 Sep 2016)
- [Gaurav Malhotra brought this change]

  openssl: fix CURLINFO_SSL_VERIFYRESULT
  
  CURLINFO_SSL_VERIFYRESULT does not get the certificate verification
  result when SSL_connect fails because of a certificate verification
  error.
  
  This fix saves the result of SSL_get_verify_result so that it is
  returned by CURLINFO_SSL_VERIFYRESULT.
  
  Closes https://github.com/curl/curl/pull/995

Daniel Stenberg (6 Sep 2016)
- [Daniel Gustafsson brought this change]

  darwinssl: test for errSecSuccess in PKCS12 import rather than noErr (#993)
  
  While noErr and errSecSuccess are defined as the same value, the API
  documentation states that SecPKCS12Import() returns errSecSuccess if
  there were no errors in importing. Ensure that a future change of the
  defined value doesn't break (however unlikely) and be consistent with
  the API docs.

- [Daniel Gustafsson brought this change]

  docs: Fix link to CONTRIBUTE in Github contribution guidelines (#994)

- [Marcel Raad brought this change]

  openssl: Fix compilation with OPENSSL_API_COMPAT=0x10100000L
  
  With OPENSSL_API_COMPAT=0x10100000L (OpenSSL 1.1 API), the cleanup
  functions are unavailable (they're no-ops anyway in OpenSSL 1.1). The
  replacements for SSL_load_error_strings, SSLeay_add_ssl_algorithms, and
  OpenSSL_add_all_algorithms are called automatically [1][2]. SSLeay() is
  now called OpenSSL_version_num().
  
  [1]: https://www.openssl.org/docs/man1.1.0/ssl/OPENSSL_init_ssl.html
  [2]: https://www.openssl.org/docs/man1.1.0/crypto/OPENSSL_init_crypto.html
  
  Closes #992

- RELEASE-NOTES: synced with 3d4c0c8b9bc1d

- http2: return EOF when done uploading without known size
  
  Fixes #982

- http2: skip the content-length parsing, detect unknown size

- http2: minor white space edit

- http2: use named define instead of magic constant in read callback

- [Craig Davison brought this change]

  configure: make the cpp -P detection not clobber CPPFLAGS
  
  CPPPFLAGS is now CPPPFLAG. Fixes CURL_CHECK_DEF.
  
  Fixes #958

- [Olivier Brunel brought this change]

  speed caps: not based on average speeds anymore
  
  Speed limits (from CURLOPT_MAX_RECV_SPEED_LARGE &
  CURLOPT_MAX_SEND_SPEED_LARGE) were applied simply by comparing limits
  with the cumulative average speed of the entire transfer; While this
  might work at times with good/constant connections, in other cases it
  can result to the limits simply being "ignored" for more than "short
  bursts" (as told in man page).
  
  Consider a download that goes on much slower than the limit for some
  time (because bandwidth is used elsewhere, server is slow, whatever the
  reason), then once things get better, curl would simply ignore the limit
  up until the average speed (since the beginning of the transfer) reached
  the limit.  This could prove the limit useless to effectively avoid
  using the entire bandwidth (at least for quite some time).
  
  So instead, we now use a "moving starting point" as reference, and every
  time at least as much as the limit as been transferred, we can reset
  this starting point to the current position. This gets a good limiting
  effect that applies to the "current speed" with instant reactivity (in
  case of sudden speed burst).
  
  Closes #971

- HISTORY.md: the multi socket was put in the wrong year!

- [Mark Hamilton brought this change]

  tool_helpers.c: fix comment typo (#989)

- [Mark Hamilton brought this change]

  libtest/test.h: fix typo (#988)

- CURLMOPT_PIPELINING.3: language

- CURLMOPT_PIPELINING.3: extended and clarified
  
  Especially in regards to the multiplexing part.

Steve Holme (31 Aug 2016)
- curl_sspi.c: Updated function description comments
  
  * Added description to Curl_sspi_free_identity()
  * Added parameter and return explanations to Curl_sspi_global_init()
  * Added parameter explaination to Curl_sspi_global_cleanup()

- README: Corrected the supported Visual Studio versions
  
  Missed from commit 8356022d17.

- KNOWN_BUGS: Move the Visual Studio project shortcomings from local README

- KNOWN_BUGS: Expand 6.4 to include Kerberos V5
  
  ...and discuss a possible solution.

Daniel Stenberg (30 Aug 2016)
- connect: fix #ifdefs for debug versions of conn/streamclose() macros
  
  CURLDEBUG is for the memory debugging
  
  DEBUGBUILD is for the extra debug stuff
  
  Pointed-out-by: Steve Holme

- KNOWN_BUGS: mention some cmake "support gaps"

Nick Zitzmann (28 Aug 2016)
- darwinssl: add documentation stating that the --cainfo option is intended for backward compatibility only
  
  In other news, I changed one other reference to "Mac OS X" in the documentation (that I previously wrote) to say "macOS" instead.

Daniel Stenberg (28 Aug 2016)
- http2: return CURLE_HTTP2_STREAM for unexpected stream close
  
  Follow-up to c3e906e9cd0f, seems like a more appropriate error code
  
  Suggested-by: Jay Satiro

- [Tatsuhiro Tsujikawa brought this change]

  http2: handle closed streams when uploading
  
  Fixes #986

- http2: make sure stream errors don't needlessly close the connection
  
  With HTTP/2 each transfer is made in an indivial logical stream over the
  connection, making most previous errors that caused the connection to get
  forced-closed now instead just kill the stream and not the connection.
  
  Fixes #941

- Curl_verify_windows_version: minor edit to avoid compiler warnings
  
  ... instead of if() before the switch(), add a default to the switch so
  that the compilers don't warn on "warning: enumeration value
  'PLATFORM_DONT_CARE' not handled in switch" anymore.

Steve Holme (27 Aug 2016)
- RELEASE-NOTES: Added missing fix from commit 15592143f

Jay Satiro (26 Aug 2016)
- schannel: Disable ALPN for Wine since it is causing problems
  
  - Disable ALPN on Wine.
  
  - Don't pass input secbuffer when ALPN is disabled.
  
  When ALPN support was added a change was made to pass an input secbuffer
  to initialize the context. When ALPN is enabled the buffer contains the
  ALPN information, and when it's disabled the buffer is empty. In either
  case this input buffer caused problems with Wine and connections would
  not complete.
  
  Bug: https://github.com/curl/curl/issues/983
  Reported-by: Christian Fillion

Kamil Dudka (26 Aug 2016)
- [Peter Wang brought this change]

  nss: work around race condition in PK11_FindSlotByName()
  
  Serialise the call to PK11_FindSlotByName() to avoid spurious errors in
  a multi-threaded environment. The underlying cause is a race condition
  in nssSlot_IsTokenPresent().
  
  Bug: https://bugzilla.mozilla.org/1297397
  
  Closes #985

- nss: refuse previously loaded certificate from file
  
  ... when we are not asked to use a certificate from file

Daniel Stenberg (26 Aug 2016)
- ftp_done: remove dead code

- TLS: random file/egd doesn't have to match for conn reuse

- test161: add comment for the exit code

Dan Fandrich (26 Aug 2016)
- test219: Add http as a required feature

Daniel Stenberg (25 Aug 2016)
- [Michael Kaufmann brought this change]

  HTTP: stop parsing headers when switching to unknown protocols
  
  - unknown protocols probably won't send more headers (e.g. WebSocket)
  - improved comments and moved them to the correct case statements
  
  Closes #899

- openssl: make build with 1.1.0 again
  
  synced with OpenSSL git master commit cc06906707

- INTERNALS: fix title

- configure: detect zlib with our pkg-config macros
  
  ... instead of relying on the pkg-config autoconf macros to be present.
  
  Fixes #972 (again...)

Jay Satiro (25 Aug 2016)
- http2: Remove incorrect comments
  
  .. also remove same from scp

Daniel Stenberg (23 Aug 2016)
- [Ales Novak brought this change]

  ftp: fix wrong poll on the secondary socket
  
  When we're uploading using FTP and the server issues a tiny pause
  between opening the connection to the client's secondary socket, the
  client's initial poll() times out, which leads to second poll() which
  does not wait for POLLIN on the secondary socket. So that poll() also
  has to time out, creating a long (200ms) pause.
  
  This patch adds the correct flag to the secondary socket, making the
  second poll() correctly wait for the connection there too.
  
  Signed-off-by: Ales Novak <alnovak@suse.cz>
  
  Closes #978

- RELEASE-NOTES: synced with 95ded2c56

- configure: make it work without PKG_CHECK_MODULES
  
  With commit c2f9b78 we added a new dependency on pkg-config for
  developers which may be unwanted. This change make the configure script
  still work as before if pkg-config isn't installed, it'll just use the
  old zlib detection logic without pkg-config.
  
  Reported-by: Marc Hörsken
  
  Fixes #972

Marc Hoersken (21 Aug 2016)
- Revert "KNOWN_BUGS: SOCKS proxy not working via IPv6"
  
  This reverts commit 9cb1059f92286a6eb5d28c477fdd3f26aed1d554.
  
  As discussed in #835 SOCKS5 supports IPv6 proxies and destinations.

Daniel Stenberg (21 Aug 2016)
- [Marco Deckel brought this change]

  win: Basic support for Universal Windows Platform apps
  
  Closes #820

Steve Holme (21 Aug 2016)
- sasl: Don't use GSSAPI authentication when domain name not specified
  
  Only choose the GSSAPI authentication mechanism when the user name
  contains a Windows domain name or the user is a valid UPN.
  
  Fixes #718

- vauth: Added check for supported SSPI based authentication mechanisms
  
  Completing commit 00417fd66c and 2708d4259b.

- http.c: Remove duplicate (authp->avail & CURLAUTH_DIGEST) check
  
  From commit 2708d4259b.

Marc Hoersken (20 Aug 2016)
- socks.c: display the hostname returned by the SOCKS5 proxy server
  
  Instead of displaying the requested hostname the one returned
  by the SOCKS5 proxy server is used in case of connection error.
  The requested hostname is displayed earlier in the connection sequence.
  
  The upper-value of the port is moved to a temporary variable and
  replaced with a 0-byte to make sure the hostname is 0-terminated.

Steve Holme (20 Aug 2016)
- urldata.h: Corrected comment for httpcode which is also populated by SMTP
  
  As of 7.25.0 and commit 5430007222.

Marc Hoersken (20 Aug 2016)
- socks.c: use Curl_printable_address in SOCKS5 connection sequence
  
  Replace custom string formatting with Curl_printable_address.
  Add additional debug and error output in case of failures.

- socks.c: align SOCKS4 connection sequence with SOCKS5
  
  Calling sscanf is not required since the raw IPv4 address is
  available and the protocol can be detected using ai_family.

Steve Holme (20 Aug 2016)
- http.c: Corrected indentation change from commit 2708d4259b
  
  Made by Visual Studio's auto-correct feature and missed by me in my own
  code reviews!

- http: Added calls to Curl_auth_is_<mechansism>_supported()
  
  Hooked up the HTTP authentication layer to query the new 'is mechanism
  supported' functions when deciding what mechanism to use.
  
  As per commit 00417fd66c existing functionality is maintained for now.

Marc Hoersken (20 Aug 2016)
- socks.c: improve verbose output of SOCKS5 connection sequence

- configure.ac: add missing quotes to PKG_CHECK_MODULES

Steve Holme (20 Aug 2016)
- sasl: Added calls to Curl_auth_is_<mechansism>_supported()
  
  Hooked up the SASL authentication layer to query the new 'is mechanism
  supported' functions when deciding what mechanism to use.
  
  For now existing functionality is maintained.

Daniel Stenberg (19 Aug 2016)
- [Miroslav Franc brought this change]

  spnego_sspi: fix memory leak in case *outlen is zero (#970)

- CURLMOPT_MAX_TOTAL_CONNECTIONS.3: mention it can also multiplex

Steve Holme (18 Aug 2016)
- vauth: Introduced Curl_auth_is_<mechansism>_supported() functions
  
  As Windows SSPI authentication calls fail when a particular mechanism
  isn't available, introduced these functions for DIGEST, NTLM, Kerberos 5
  and Negotiate to allow both HTTP and SASL authentication the opportunity
  to query support for a supported mechanism before selecting it.
  
  For now each function returns TRUE to maintain compatability with the
  existing code when called.

Daniel Stenberg (18 Aug 2016)
- test1144: verify HEAD with body-only response

Steve Holme (17 Aug 2016)
- RELEASE-PROCEDURE: Added some more future release dates
  
  ...and removed some old ones

Daniel Stenberg (17 Aug 2016)
- [David Woodhouse brought this change]

  curl: allow "pkcs11:" prefix for client certificates
  
  RFC7512 provides a standard method to reference certificates in PKCS#11
  tokens, by means of a URI starting 'pkcs11:'.
  
  We're working on fixing various applications so that whenever they would
  have been able to use certificates from a file, users can simply insert
  a PKCS#11 URI instead and expect it to work. This expectation is now a
  part of the Fedora packaging guidelines, for example.
  
  This doesn't work with cURL because of the way that the colon is used
  to separate the certificate argument from the passphrase. So instead of
  
     curl -E 'pkcs11:manufacturer=piv_II;id=%01' …
  
  I instead need to invoke cURL with the colon escaped, like this:
  
     curl -E 'pkcs11\:manufacturer=piv_II;id=%01' …
  
  This is suboptimal because we want *consistency* — the URI should be
  usable in place of a filename anywhere, without having strange
  differences for different applications.
  
  This patch therefore disables the processing in parse_cert_parameter()
  when the string starts with 'pkcs11:'. It means you can't pass a
  passphrase with an unescaped PKCS#11 URI, but there's no need to do so
  because RFC7512 allows a PIN to be given as a 'pin-value' attribute in
  the URI itself.
  
  Also, if users are already using RFC7512 URIs with the colon escaped as
  in the above example — even providing a passphrase for cURL to handling
  instead of using a pin-value attribute, that will continue to work
  because their string will start 'pkcs11\:' and won't match the check.
  
  What *does* break with this patch is the extremely unlikely case that a
  user has a file which is in the local directory and literally named
  just "pkcs11", and they have a passphrase on it. If that ever happened,
  the user would need to refer to it as './pkcs11:<passphrase>' instead.

- nss: make the global variables static

- openssl: use regular malloc instead of OPENSSL_malloc
  
  This allows for better memmory debugging and torture tests.

- proxy: fix tests as follow-up to 93b0d907d5
  
  This fixes tests that were added after 113f04e664b as the tests would
  fail otherwise.
  
  We bring back "Proxy-Connection: Keep-Alive" now unconditionally to fix
  regressions with old and stupid proxies, but we could possibly switch to
  using it only for CONNECT or only for NTLM in a future if we want to
  gradually reduce it.
  
  Fixes #954
  
  Reported-by: János Fekete

- Revert "Proxy-Connection: stop sending this header by default"
  
  This reverts commit 113f04e664b16b944e64498a73a4dab990fe9a68.

- CURLOPT_PROXY.3: unsupported schemes cause errors now
  
  Follow-up to a96319ebb9 (document the new behavior)

- tests/README: mention nghttpx for HTTP/2 tests

- README.md: add our CII Best Practices badge

- proxy: polished the error message for unsupported schemes
  
  Follow up to a96319ebb93

- test219: verify unsupported scheme for proxies get rejected

- proxy: reject attempts to use unsupported proxy schemes
  
  I discovered some people have been using "https://example.com" style
  strings as proxy and it "works" (curl doesn't complain) because curl
  ignores unknown schemes and then assumes plain HTTP instead.
  
  I think this misleads users into believing curl uses HTTPS to proxies
  when it doesn't. Now curl rejects proxy strings using unsupported
  schemes instead of just ignoring and defaulting to HTTP.

- RELEASE-NOTES: synced with b7ee5316c2fd5b

Marc Hoersken (14 Aug 2016)
- socks.c: Correctly calculate position of port in response packet
  
  Third commit to fix issue #944 regarding SOCKS5 error handling.
  
  Reported-by: David Kalnischkies

- socks.c: Do not modify and invalidate calculated response length
  
  Second commit to fix issue #944 regarding SOCKS5 error handling.
  
  Reported-by: David Kalnischkies

- socks.c: Move error output after reading the whole response packet
  
  First commit to fix issue #944 regarding SOCKS5 error handling.
  
  Reported-by: David Kalnischkies

Daniel Stenberg (13 Aug 2016)
- [Ronnie Mose brought this change]

  MANUAL: Remove invalid link to LDAP documentation (#962)
  
  The server developer.netscape.com does not resolve into any
  ip address and can be removed.

Jay Satiro (13 Aug 2016)
- openssl: accept subjectAltName iPAddress if no dNSName match
  
  Undo change introduced in d4643d6 which caused iPAddress match to be
  ignored if dNSName was present but did not match.
  
  Also, if iPAddress is present but does not match, and dNSName is not
  present, fail as no-match. Prior to this change in such a case the CN
  would be checked for a match.
  
  Bug: https://github.com/curl/curl/issues/959
  Reported-by: wmsch@users.noreply.github.com

Daniel Stenberg (12 Aug 2016)
- [Dambaev Alexander brought this change]

  configure.ac: add zlib search with pkg-config
  
  Closes #956

- rtsp: ignore whitespace in session id
  
  Follow-up to e577c43bb to fix test case 569 brekage: stop the parser at
  whitespace as well.
  
  Help-by: Erik Janssen

- HTTP: retry failed HEAD requests too
  
  Mark's new document about HTTP Retries
  (https://mnot.github.io/I-D/httpbis-retry/) made me check our code and I
  spotted that we don't retry failed HEAD requests which seems totally
  inconsistent and I can't see any reason for that separate treatment.
  
  So, no separate treatment for HEAD starting now. A HTTP request sent
  over a reused connection that gets cut off before a single byte is
  received will be retried on a fresh connection.
  
  Made-aware-by: Mark Nottingham

- mk-ca-bundle.1: document -m, added in 1.26

- RELEASE-NOTES: synced with e577c43bb5

- [Erik Janssen brought this change]

  rtsp: accept any RTSP session id
  
  Makes libcurl work in communication with gstreamer-based RTSP
  servers. The original code validates the session id to be in accordance
  with the RFC. I think it is better not to do that:
  
  - For curl the actual content is a don't care.
  
  - The clarity of the RFC is debatable, is $ allowed or only as \$, that
    is imho not clear
  
  - Gstreamer seems to url-encode the session id but % is not allowed by
  the RFC
  
  - less code
  
  With this patch curl will correctly handle real-life lines like:
  Session: biTN4Kc.8%2B1w-AF.; timeout=60
  
  Bug: https://curl.haxx.se/mail/lib-2016-08/0076.html

- symbols-in-versions: add CURL_STRICTER
  
  Added in 5fce88aa8c12564

- [Simon Warta brought this change]

  winbuild: Allow changing C compiler via environment variable CC (#952)
  
  This makes it possible to use specific compilers or a cache.
  
  Sample use for clcache:
  set CC=clcache.bat
  nmake /f Makefile.vc DEBUG=no MODE=static VC=14 GEN_PDB=no

- LICENSE-MIXING.md: switched to markdown

- docs-make: have markdown files use .md

- curl.h: make CURL_NO_OLDIES define CURL_STRICTER

- HISTORY.md: use markdown extension

- SSLCERTS.md: renamed to markdown extension

- INTERNALS.md: use markdown extension for markdown content

- CONTRIBUTE.md: markdown extension

- CONTRIBUTE: changed to markdown

- CONTRIBUTE: refreshed

- TODO: added an SSH section and two SFTP things to do

- TODO: remove the 1.22 duplicated item

- TODO: move "CURLOPT_MAIL_CLIENT" to SMTP section

- TODO: API for URL parsing/splitting

- TODO: move QUIC to the HTTP section

- [Simon Warta brought this change]

  winbuild: Free name $(CC) in Makefile (#950)
  
  In the old line number 290, CC and CURL_CC had the same value. After
  that, /DCURL_STATICLIB was added to CC but not CURL_CC (intended?).
  
  This gets rid of the CC variable entirely. It is a first step to make it
  possible to manualyl set a CC variable in order to be able to change the
  compiler.

- TODO: Use huge HTTP/2 windows

- [Simon Warta brought this change]

  winbuild: Avoid setting redundant CFLAGS to compile commands (#949)
  
  $(CURL_CC) is always used with $(CURL_CFLAGS) appended, so before this,
  all arguments in CURL_CFLAGS have been added twice.

Jay Satiro (8 Aug 2016)
- cmake: Enable win32 threaded resolver by default
  
  - Turn on USE_THREADS_WIN32 in Windows if ares isn't on
  
  This change is similar to what we already do in the autotools build.

- cmake: Enable win32 large file support by default
  
  All compilers used by cmake in Windows should support large files.
  
  - Add test SIZEOF_OFF_T
  - Remove outdated test SIZEOF_CURL_OFF_T
  - Turn on USE_WIN32_LARGE_FILES in Windows
  - Check for 'Largefile' during the features output

Daniel Stenberg (7 Aug 2016)
- TODO: added several ideas, removed SPDY

- http2: always wait for readable socket
  
  Since the server can at any time send a HTTP/2 frame to us, we need to
  wait for the socket to be readable during all transfers so that we can
  act on incoming frames even when uploading etc.
  
  Reminded-by: Tatsuhiro Tsujikawa

- RELEASE-NOTES: synced with 7b4bf37a44791

- [Thomas Glanzmann brought this change]

  mbedtls: set debug threshold to 4 (verbose) when MBEDTLS_DEBUG is defined
  
  In order to make MBEDTLS_DEBUG work, the debug threshold must be unequal
  to 0.  This patch also adds a comment how mbedtls must be compiled in
  order to make debugging work, and explains the possible debug levels.

- CURLOPT_TCP_NODELAY: now enabled by default
  
  After a few wasted hours hunting down the reason for slowness during a
  TLS handshake that turned out to be because of TCP_NODELAY not being
  set, I think we have enough motivation to toggle the default for this
  option. We now enable TCP_NODELAY by default and allow applications to
  switch it off.
  
  This also makes --tcp-nodelay unnecessary, but --no-tcp-nodelay can be
  used to disable it.
  
  Thanks-to: Tim Rühsen
  Bug: https://curl.haxx.se/mail/lib-2016-06/0143.html

- [Serj Kalichev brought this change]

  TFTP: Fix upload problem with piped input
  
  When input stream for curl is stdin and input stream is not a file but
  generated by a script then curl can truncate data transfer to arbitrary
  size since a partial packet is treated as end of transfer by TFTP.
  
  Fixes #857

- mk-ca-bundle.pl: -m keeps ca cert meta data in output
  
  Makes the script pass on comments holding meta data to the output
  file. Like fingerprinters, issuer, date ranges etc.
  
  Closes #937

- multi: make Curl_expire() work with 0 ms timeouts
  
  Previously, passing a timeout of zero to Curl_expire() was a magic code
  for clearing all timeouts for the handle. That is now instead made with
  the new Curl_expire_clear() function and thus a 0 timeout is fine to set
  and will trigger a timeout ASAP.
  
  This will help removing short delays, in particular notable when doing
  HTTP/2.

- transfer: return without select when the read loop reached maxcount
  
  Regression added in 790d6de48515. The was then added to avoid one
  particular transfer to starve out others. But when aborting due to
  reading the maxcount, the connection must be marked to be read from
  again without first doing a select as for some protocols (like SFTP/SCP)
  the data may already have been read off the socket.
  
  Reported-by: Dan Donahue
  Bug: https://curl.haxx.se/mail/lib-2016-07/0057.html

Steve Holme (3 Aug 2016)
- [Bill Nagel brought this change]

  mbedtls: Added support for NTLM

Daniel Stenberg (3 Aug 2016)
- [Sergei Nikulov brought this change]

  travis: removed option to rebuild autotool from source
  
  Fixes #943

- bump: start working toward 7.50.2

Version 7.50.1 (3 Aug 2016)

Daniel Stenberg (3 Aug 2016)
- THANKS: 7 new contributors from the 7.50.1 release

- RELEASE-NOTES: 7.50.1

- TLS: only reuse connections with the same client cert
  
  CVE-2016-5420
  Bug: https://curl.haxx.se/docs/adv_20160803B.html

- TLS: switch off SSL session id when client cert is used
  
  CVE-2016-5419
  Bug: https://curl.haxx.se/docs/adv_20160803A.html
  Reported-by: Bru Rom
  Contributions-by: Eric Rescorla and Ray Satiro

- curl_multi_cleanup: clear connection pointer for easy handles
  
  CVE-2016-5421
  Bug: https://curl.haxx.se/docs/adv_20160803C.html
  Reported-by: Marcelo Echeverria and Fernando Muñoz

- KNOWN_BUGS: SOCKS proxy not working via IPv6
  
  Closes #835

- KNOWN_BUGS: CURLOPT_SEEKFUNCTION not called with CURLFORM_STREAM
  
  Closes #768

- KNOWN_BUGS: transfer-encoding: chunked in HTTP/2
  
  Closes #662

- TODO: Provide cmake config-file
  
  Closes #885

Patrick Monnerat (2 Aug 2016)
- os400: define BUILDING_LIBCURL in make script.

Daniel Stenberg (1 Aug 2016)
- RELEASE-NOTES: synced with aa9f536a18b

Jay Satiro (1 Aug 2016)
- [Thomas Glanzmann brought this change]

  mbedtls: Fix debug function name
  
  This patch is necessary so that curl compiles if MBEDTLS_DEBUG is
  defined.
  
  Bug: https://curl.haxx.se/mail/lib-2016-08/0001.html

Daniel Stenberg (1 Aug 2016)
- [Sergei Nikulov brought this change]

  travis: fix OSX build by re-installing libtool
  
  Apparently due to a broken homebrew install
  
  fixes #934
  Closes #939

- [Martin Vejnár brought this change]

  win32: fix a potential memory leak in Curl_load_library
  
  If a call to GetSystemDirectory fails, the `path` pointer that was
  previously allocated would be leaked. This makes sure that `path` is
  always freed.
  
  Closes #938

- include: revert 9adf3c4 and make public types void * again
  
  Many applications assume the actual contents of the public types and use
  that do for example forward declarations (saving them from including our
  public header) which then breaks when we switch from void * to a struct
  *.
  
  I'm not convinced we were wrong, but since this practise seems
  widespread enough I'm willing to (partly) step down.
  
  Now libcurl uses the struct itself when it is built and it allows
  applications to use the struct type if CURL_STRICTER is defined at the
  time of the #include.
  
  Reported-by: Peter Frühberger
  Fixes #926

Jay Satiro (28 Jul 2016)
- [Yonggang Luo brought this change]

  cmake: Fix for schannel support
  
  The check_library_exists_concat do not check crypt32 library properly.
  So include it directly.
  
  Bug: https://github.com/curl/curl/pull/917
  Reported-by: Yonggang Luo
  
  Bug: https://github.com/curl/curl/issues/935
  Reported-by: Alain Danteny

- Revert "travis: Install libtool for OS X builds"
  
  Didn't work.
  
  This reverts commit 50723585ed380744358de054e2a55dccee65dfd7.

- travis: Install libtool for OS X builds
  
  CI is failing due to missing libtoolize, so I'm trying this.

Daniel Stenberg (26 Jul 2016)
- [Viktor Szakats brought this change]

  TODO: minor typo in last commit
  
  merged #931

- TODO: Timeout idle connections from the pool

Patrick Monnerat (25 Jul 2016)
- os400: minimum supported OS version: V6R1M0.
  Do not log compilation informational messages.

Jay Satiro (24 Jul 2016)
- tests: Fix for http/2 feature
  
  Bug: https://curl.haxx.se/mail/lib-2016-07/0070.html
  Reported-by: Paul Howarth

Steve Holme (23 Jul 2016)
- README: Mention wolfSSL in the 'Dependencies' section

- vauth.h: No need to query HAVE_GSSAPI || USE_WINDOWS_SSPI for SPNEGO
  
  As SPNEGO is only defined when these pre-processor variables are defined
  there is no need to query them explicitly.

- spnego: Corrected miss-placed * in Curl_auth_spnego_cleanup() declaration
  
  Typo introduced in commit ad5e9bfd5d.

Daniel Stenberg (22 Jul 2016)
- SECURITY: mention how to get windows-specific CVEs
  
  ... and make the distros link a proper link

Dan Fandrich (21 Jul 2016)
- test558: fix test by stripping file paths from FD lines

Kamil Dudka (21 Jul 2016)
- tests: distribute the http2-server.pl script, too

- docs: distribute the CURLINFO_HTTP_VERSION(3) man page, too

Daniel Stenberg (21 Jul 2016)
- bump: start working on 7.50.1

Version 7.50.0 (21 Jul 2016)

Daniel Stenberg (21 Jul 2016)
- RELEASE-NOTES: version 7.50.0 ready

- THANKS: 13 new contributors from the 7.50.0 release

Jay Satiro (21 Jul 2016)
- winbuild: fix embedded manifest option
  
  Embedded manifest option didn't work due to typo.
  
  Reported-by: Stefan Kanthak

- vauth: Fix memleak by freeing credentials if out of memory
  
  This is a follow up to the parent commit dcdd4be which fixes one leak
  but creates another by failing to free the credentials handle if out of
  memory. Also there's a second location a few lines down where we fail to
  do same. This commit fixes both of those issues.

Daniel Stenberg (20 Jul 2016)
- [Saurav Babu brought this change]

  vauth: Fixed memory leak due to function returning without free
  
  This patch allocates memory to "output_token" only when it is required
  so that memory is not leaked if function returns.

- test558: updated after ipv6-check move
  
  Follow-up commit to c50980807c5 to make this test pass.

Jay Satiro (20 Jul 2016)
- connect: disable TFO on Linux when using SSL
  
  - Linux TFO + TLS is not implemented yet.
  
  Bug: https://github.com/curl/curl/issues/907

Daniel Stenberg (19 Jul 2016)
- ROADMAP: QUIC and TLS 1.3

- RELEASE-NOTES: synced with c50980807c5

Jay Satiro (18 Jul 2016)
- [Brian Prodoehl brought this change]

  curl_global_init: Check if IPv6 works
  
  - Curl_ipv6works() is not thread-safe until after the first call, so
  call it once during global init to avoid a possible race condition.
  
  Bug: https://github.com/curl/curl/issues/915
  PR: https://github.com/curl/curl/pull/918

- [Timothy Polich brought this change]

  CURLMOPT_SOCKETFUNCTION.3: fix typo
  
  Closes https://github.com/curl/curl/pull/914

- [Miroslav Franc brought this change]

  library: Fix memory leaks found during static analysis
  
  Closes https://github.com/curl/curl/pull/913

- [Viktor Szakats brought this change]

  cookie.c: Fix misleading indentation
  
  Closes https://github.com/curl/curl/pull/911

- FAQ: Update FTP directory listing section for MLSD command
  
  Explain how some FTP servers support the machine readable listing
  format MLSD from RFC 3659 and compare it to LIST.
  
  Ref: https://github.com/curl/curl/issues/906

Daniel Stenberg (1 Jul 2016)
- [Sergei Nikulov brought this change]

  Appveyor: Updates for options - CURL_STATICLIB/BUILD_TESTING
  
  Closes #892

- TODO: 17.4 also brings more HTTP/2 support

- TODO: try next proxy if one doesn't work
  
  Closes #896

- conn: don't free easy handle data in handler->disconnect
  
  Reported-by: Gou Lingfeng
  Bug: https://curl.haxx.se/mail/lib-2016-06/0139.html

- test1244: test different proxy ports same URL

- curl_global_init.3: improved formatting of the flags

- curl_global_init.3: expand on the SSL and WIN32 bits purpose
  
  Reported-by: Richard Gray
  Bug: https://curl.haxx.se/mail/lib-2016-06/0136.html

- [Michael Kaufmann brought this change]

  cleanup: minor code cleanup in Curl_http_readwrite_headers()
  
  - the expression of an 'if' was always true
  - a 'while' contained a condition that was always true
  - use 'if(k->exp100 > EXP100_SEND_DATA)' instead of 'if(k->exp100)'
  - fixed a typo
  
  Closes #889

- SFTP: set a generic error when no SFTP one exists...
  
  ... as otherwise we could get a 0 which would count as no error and we'd
  wrongly continue and could end up segfaulting.
  
  Bug: https://curl.haxx.se/mail/lib-2016-06/0052.html
  Reported-by: 暖和的和暖

- ROADMAP: http2 tests are merged, mention http2 perf

- docs/README.md: to render nicer pages on github
  
  ... as previously the README.cmake would be picked and put at the bottom
  of the docs page there and it wasn't very representative!

- README.md: change host name for the svg logo
  
  rawgit.com asks to use the domain cdn.rawgit.com for production
  
  See #900

- [Viktor Szakats brought this change]

  README.md: use the SVG logo

- README.md: logo on top!

- KNOWN_BUGS: 3.4 POP3 expects "CRLF.CRLF" eob for some
  
  Closes #740

- RELEASE-NOTES: synced with d61c80515aa8

- [Michael Osipov brought this change]

  acinclude.m4: improve autodetection of CA bundle on FreeBSD
  
  The FreeBSD Port security/ca_root_nss installs the Mozilla NSS CA bundle
  to /usr/local/share/certs/ca-root-nss.crt. Use this bundle in the
  discovery process.
  
  This change also removes the former FreeBSD path that has been obsolete
  for 8 years since this FreeBSD ports commit:
  https://svnweb.freebsd.org/ports/head/security/?view=revision&revision=215953
  
  Closes #894

- configure: don't specify .lib for libs on windows
  
  Another follow up for crypt32.lib linking with winssl

- configure: fix winssl LIBS change typo
  
  follow-up from 120bf29e

- TODO: "TCP Fast Open" is done, add monitor pool connections

- configure: add crypt32.lib for winssl builds
  
  Necessary since 6cabd78531f

- Makefile.vc: link with crypt32.lib for winssl builds
  
  Necessary since 6cabd78531f
  
  Fixes #853

- [Joel Depooter brought this change]

  VC: Add crypt32.lib to Visual Sudio project template files
  
  Closes #854

- vc: fix the build for schannel certinfo support
  
  Broken since 6cabd785, which adds use of the Curl_extract_certinfo
  function from the x509asn1.c file.

- typedefs: use the full structs in internal code...
  
  ... and save the typedef'ed names for headers and external APIs.

- internals: rename the SessionHandle struct to Curl_easy

- headers: forward declare CURL, CURLM and CURLSH as structs
  
  Instead of typedef'ing to void, typedef to their corresponding actual
  struct names to allow compilers to type-check.
  
  Assisted-by: Reinhard Max

Jay Satiro (22 Jun 2016)
- vtls: Only call add/getsession if session id is enabled
  
  Prior to this change we called Curl_ssl_getsessionid and
  Curl_ssl_addsessionid regardless of whether session ID reusing was
  enabled. According to comments that is in case session ID reuse was
  disabled but then later enabled.
  
  The old way was not intuitive and probably not something users expected.
  When a user disables session ID caching I'd guess they don't expect the
  session ID to be cached anyway in case the caching is later enabled.

Daniel Stenberg (22 Jun 2016)
- curl.1: the used progress meter suffix is k in lower case
  
  Closes #883

- [Sergei Nikulov brought this change]

  cmake: now using BUILD_TESTING=ON/OFF
  
  CMake build now using BUILD_TESTING=ON/OFF (default is OFF) to build
  tests and enabling CTest integration. Options BUILD_CURL_TESTS and
  BUILD_DASHBOARD_REPORTS was removed.
  
  Closes #882
  
  Reviewed-by: Brad King

- [Michael Kaufmann brought this change]

  cleanup: fix method names in code comments
  
  Closes #887

Kamil Dudka (21 Jun 2016)
- curl-compilers.m4: improve detection of GCC's -fvisibility= flag
  
  Some builds of GCC produce output on both stdout and stderr when --help
  --verbose is used.  The 2>&1 redirection caused them to be arbitrarily
  interleaved with each other because of stream buffering.  Consequently,
  grep failed to match the fvisibility= string in the mixed output, even
  though the string was present in GCC's standard output.
  
  This led to silently disabling symbol hiding in some builds of curl.

Daniel Stenberg (19 Jun 2016)
- tests: fix the HTTP/2 tests
  
  The HTTP/2 tests brought with commit bf05606ef1f were using the internal
  name 'http2' for the HTTP/2 server, while in fact that name was already
  used for the second instance of the HTTP server. This made tests using
  the second instance (like test 2050) fail after a HTTP/2 test had run.
  
  The server is now known as HTTP/2 internally and within the <server>
  section in test cases. 1700, 1701 and 1702 were updated accordingly.

- openssl: use more 'const' to fix build warnings with 1.1.0 branch

- curl.1: missed 'T' in the progress unit suffixes

- curl.1: mention the unix for the progress meter

Patrick Monnerat (16 Jun 2016)
- os400: add new definitions to ILE/RPG binding.

Daniel Stenberg (16 Jun 2016)
- openssl: fix cert check with non-DNS name fields present
  
  Regression introduced in 5f5b62635 (released in 7.48.0)
  
  Reported-by: Fabian Ruff
  Fixes #875

Dan Fandrich (16 Jun 2016)
- axtls: Use Curl_wait_ms instead of the less-portable usleep

- axtls: Fixed compile after compile 31c521b0

- tests: Added HTTP proxy keywords to tests 1141 & 1142

Jay Satiro (15 Jun 2016)
- [Sergei Nikulov brought this change]

  cmake: Fix build with winldap
  
  Bug: https://github.com/curl/curl/pull/874
  Reported-by: Sergei Nikulov

- CURLOPT_POSTFIELDS.3: Clarify what happens when set empty
  
  When CURLOPT_POSTFIELDS is set to an empty string libcurl will send a
  zero-byte POST. Prior to this change it was documented as sending data
  from the read callback.
  
  This also changes the wording of what happens when empty or NULL so that
  it's hopefully easier to understand for people whose primary language
  isn't English.
  
  Bug: https://github.com/curl/curl/issues/862
  Reported-by: Askar Safin

- [Michael Wallner brought this change]

  curl_multi_socket_action.3: Fix rewording
  
  - Remove some erroneous text.
  
  Closes https://github.com/curl/curl/pull/865

- [Luo Jinghua brought this change]

  resolve: enable protocol family logic for synthesized IPv6
  
  - Enable protocol family logic for IPv6 resolves even when support
  for synthesized addresses is enabled.
  
  This is a follow up to the parent commit that added support for
  synthesized IPv6 addresses from IPv4 on iOS/OS X. The protocol family
  logic needed for IPv6 was inadvertently excluded if support for
  synthesized addresses was enabled.
  
  Bug: https://github.com/curl/curl/issues/863
  Ref: https://github.com/curl/curl/pull/866
  Ref: https://github.com/curl/curl/pull/867

Daniel Stenberg (7 Jun 2016)
- [Luo Jinghua brought this change]

  resolve: add support for IPv6 DNS64/NAT64 Networks on OS X + iOS
  
  Use getaddrinfo() to resolve the IPv4 address literal on iOS/Mac OS X.
  If the current network interface doesn’t support IPv4, but supports
  IPv6, NAT64, and DNS64.
  
  Closes #866
  Fixes #863

- tests: two more HTTP/2 tests
  
  1701 and 1702

- runtests: don't display logs when http2 server fails to start

- runtests: make stripfile work on stdout as well
  
  ... and have test 1700 use that to strip out the nghttpx server: headers

- http2-tests: test1700 is the first real HTTP/2 test
  
  It requires that 'nghttpx' is in the PATH, and it will run the tests
  using nghttpx as a front-end proxy in front of the standard HTTP/1 test
  server. This uses HTTP/2 over plain TCP.
  
  If you like me have nghttpx installed in a custom path, you can run test 1700
  like this:
  
  $ PATH=$PATH:$HOME/build-nghttp2/bin/ ./runtests.pl 1700

- RELEASE-NOTES: synced with 34855feeb4c299

Steve Holme (6 Jun 2016)
- schannel: Disable ALPN on Windows < 8.1
  
  Calling QueryContextAttributes with SECPKG_ATTR_APPLICATION_PROTOCOL
  fails on Windows < 8.1 so we need to disable ALPN on these OS versions.
  
  Inspiration provide by: Daniel Seither
  
  Closes #848
  Fixes #840

Jay Satiro (5 Jun 2016)
- checksrc: Add LoadLibrary to the banned functions list
  
  LoadLibrary was supplanted by Curl_load_library for security
  reasons in 6df916d.

- http: Fix HTTP/2 connection reuse
  
  - Change the parser to not require a minor version for HTTP/2.
  
  HTTP/2 connection reuse broke when we changed from HTTP/2.0 to HTTP/2
  in 8243a95 because the parser still expected a minor version.
  
  Bug: https://github.com/curl/curl/issues/855
  Reported-by: Andrew Robbins, Frank Gevaerts

Steve Holme (4 Jun 2016)
- connect.c: Fixed compilation warning from commit 332e8d6164
  
  connect.c:952:5: warning: suggest explicit braces to avoid ambiguous 'else'

- win32: Used centralised verify windows version function
  
  Closes #845

- win32: Added verify windows version functionality

- win32: Introduced centralised verify windows version function

Kamil Dudka (3 Jun 2016)
- tool_urlglob: fix off-by-one error in glob_parse()
  
  ... causing SIGSEGV while parsing URL with too many globs.
  Minimal example:
  
  $ curl $(for i in $(seq 101); do printf '{a}'; done)
  
  Reported-by: Romain Coltel
  Bug: https://bugzilla.redhat.com/1340757

Daniel Stenberg (1 Jun 2016)
- [Benjamin Kircher brought this change]

  libcurl-multi.3: fix small typo
  
  Closes #850

- [Viktor Szakats brought this change]

  makefile.m32: add crypt32 for winssl builds
  
  Dependency added by 6cabd78
  
  Closes #849

- [Ivan Avdeev brought this change]

  vtls: fix ssl session cache race condition
  
  Sessionid cache management is inseparable from managing individual
  session lifetimes. E.g. for reference-counted sessions (like those in
  SChannel and OpenSSL engines) every session addition and removal
  should be accompanied with refcount increment and decrement
  respectively. Failing to do so synchronously leads to a race condition
  that causes symptoms like use-after-free and memory corruption.
  This commit:
   - makes existing session cache locking explicit, thus allowing
     individual engines to manage lock's scope.
   - fixes OpenSSL and SChannel engines by putting refcount management
     inside this lock's scope in relevant places.
   - adds these explicit locking calls to other engines that use
     sessionid cache to accommodate for this change. Note, however,
     that it is unknown whether any of these engines could also have
     this race.
  
  Bug: https://github.com/curl/curl/issues/815
  Fixes #815
  Closes #847

- [Andrew Kurushin brought this change]

  schannel: add CURLOPT_CERTINFO support
  
  Closes #822

- RELEASE-NOTES: synced with 142ee9fa15002315

- openssl: rename the private SSL_strerror
  
  ... to make it not look like an OpenSSL function

- [Michael Kaufmann brought this change]

  openssl: Use correct buffer sizes for error messages
  
  Closes #844

- curl: fix -q [regression]
  
  This broke in 7.49.0 with commit e200034425a7625
  
  Fixes #842

- URL parser: allow URLs to use one, two or three slashes
  
  Mostly in order to support broken web sites that redirect to broken URLs
  that are accepted by browsers.
  
  Browsers are typically even more leniant than this as the WHATWG URL
  spec they should allow an _infinite_ amount. I tested 8000 slashes with
  Firefox and it just worked.
  
  Added test case 1141, 1142 and 1143 to verify the new parser.
  
  Closes #791

- [Renaud Lehoux brought this change]

  cmake: Added missing mbedTLS support
  
  Closes #837

- [Renaud Lehoux brought this change]

  mbedtls: removed unused variables
  
  Closes #838

- [Frank Gevaerts brought this change]

  http: add CURLINFO_HTTP_VERSION and %{http_version}
  
  Adds access to the effectively used http version to both libcurl and
  curl.
  
  Closes #799

- bump: start the journey toward 7.50.0

- [Marcel Raad brought this change]

  openssl: fix build with OPENSSL_NO_COMP
  
  With OPENSSL_NO_COMP defined, there is no function
  SSL_COMP_free_compression_methods
  
  Closes #836

- [Gisle Vanem brought this change]

  memdebug: fix MSVC crash with -DMEMDEBUG_LOG_SYNC
  
  Fixes #828

- [Jonathan brought this change]

  README.md: polish
  
  Closes #834

- RELEASE-NOTES: fix vuln link

Version 7.49.1 (30 May 2016)

Daniel Stenberg (30 May 2016)
- RELEASE-NOTES: 7.49.1

- [Steve Holme brought this change]

  loadlibrary: Only load system DLLs from the system directory
  
  Inspiration provided by: Daniel Stenberg and Ray Satiro
  
  Bug: https://curl.haxx.se/docs/adv_20160530.html
  
  Ref: Windows DLL hijacking with curl, CVE-2016-4802

- ssh: fix version number check typo

Jay Satiro (29 May 2016)
- curl_share_setopt.3: Add min ver needed for ssl session lock
  
  Bug: https://github.com/curl/curl/issues/826
  Reported-by: Michael Wallner

Daniel Stenberg (29 May 2016)
- ssh: fix build for libssh2 before 1.2.6
  
  The statvfs functionality was added to libssh2 in that version, so we
  switch off that functionality when built with older libraries.
  
  Fixes #831

- mbedtls: fix includes so snprintf() works
  
  Regression from the previous *printf() rearrangements, this file missed to
  include the correct header to make sure snprintf() works universally.
  
  Reported-by: Moti Avrahami
  Bug: https://curl.haxx.se/mail/lib-2016-05/0196.html

Steve Holme (23 May 2016)
- checksrc.pl: Added variants of strcat() & strncat() to banned function list
  
  Added support for checking the tchar, unicode and mbcs variants of
  strcat() and strncat() in the banned function list.

Daniel Stenberg (23 May 2016)
- smtp: minor ident (white space) fixes

- THANKS: updated after script fixes
  
  Now giving credit properly to github user names, fixed some UTF-8 issues
  and added names discovered when contrithanks was improved.

- THANKS-filter: more name cleanups

- contrithanks.sh: exclude existing names case insensitively

- contrithanks.sh: use same grep pattern and -a flag as contributors.sh

- contributors.sh: better grep pattern, use grep -a

- THANKS-filter: fix more names

- contrithanks.sh: do the same github fix as contributors.sh
  
  from 1577bfa35ba

Jay Satiro (23 May 2016)
- contributors: Show GitHub username if real name unknown
  
  Prior to this change if a GitHub contributor's real name was unknown
  they would be omitted from the list.
  
  Bug: https://github.com/curl/curl/issues/824

Daniel Stenberg (21 May 2016)
- RELEASE-NOTES: synced with 3caaeffbe8ded4

Jay Satiro (20 May 2016)
- openssl: cleanup must free compression methods
  
  - Free compression methods if OpenSSL 1.0.2 to avoid a memory leak.
  
  Bug: https://github.com/curl/curl/issues/817
  Reported-by: jveazey@users.noreply.github.com

Daniel Stenberg (20 May 2016)
- [Gisle Vanem brought this change]

  curl_multibyte: fix compiler error
  
  While compiling lib/curl_multibyte.c with '-DUSE_WIN32_IDN' etc. I was
  getting:
  
  f:\mingw32\src\inet\curl\lib\memdebug.h(38): error C2054: expected '('
  to follow 'CURL_EXTERN'
  
  f:\mingw32\src\inet\curl\lib\memdebug.h(38): error C2085:
  'curl_domalloc': not in formal parameter list

- THANKS-filter: make Jan-E get proper credit

- [Jan-E brought this change]

  winbuild/Makefile.vc: Fix check on SSL, MBEDTLS, WINSSL exclusivity
  
  Closes #818

- [Alexander Traud brought this change]

  libcurl.m4: Avoid obsolete warning
  
  Closes #821

Jay Satiro (20 May 2016)
- [Michael Kaufmann brought this change]

  CURLOPT_CONNECT_TO.3: user must not free the list prematurely
  
  The connect-to list isn't copied so as long as the handle may be used
  for a transfer the list must be valid.
  
  Bug: https://github.com/curl/curl/pull/819
  Reported-by: Michael Kaufmann

Daniel Stenberg (19 May 2016)
- RELEASE-NOTES: synced with 48114a8634242c

- openssl: ERR_remove_thread_state() is deprecated in latest 1.1.0
  
  See OpenSSL commit 21e001747d4a

- http2: use HTTP/2 in the HTTP/1.1-alike header
  
  ... when generating them, not "2.0" as the protocol is called just
  HTTP/2 and nothing else.

Jay Satiro (19 May 2016)
- dist: include curl_multi_socket_all.3
  
  Closes https://github.com/curl/curl/pull/816

Steve Holme (18 May 2016)
- bump: Start work on 7.49.1

Daniel Stenberg (18 May 2016)
- curlbuild.h.dist: check __LP64__ as well to fix MIPS build
  
  The preprocessor check that sets up the 32bit defines for non-configure
  builds didn't work properly for MIPS systems as __mips__ is defined for
  both 32bit and 64bit. Now __LP64__ is also checked and indicates 64bit.
  
  Reported-by: Tomas Jakobsson
  Fixes #813

- [Marcel Raad brought this change]

  schannel: fix compile break with MSVC XP toolset
  
  For the Windows XP toolset of Visual C++ 2013/2015, the old Windows SDK
  7.1 is used. In this case, _USING_V110_SDK71_ is defined.
  
  Closes #812

- dist: include CHECKSRC.md
  
  Reported-by: Paul Howarth
  Bug: https://curl.haxx.se/mail/lib-2016-05/0116.html

- test/Makefile.am: include manpage-scan.pl and nroff-scan.pl in dist
  
  Reported-by: Ray Satiro
  Bug: https://curl.haxx.se/mail/lib-2016-05/0113.html

Version 7.49.0 (17 May 2016)

Daniel Stenberg (17 May 2016)
- THANKS: 24 new names from 7.49.0 release notes

- RELEASE-NOTES: 7.49.0

- mbedtls/polarssl: set "hostname" unconditionally
  
  ...as otherwise the TLS libs will skip the CN/SAN check and just allow
  connection to any server. curl previously skipped this function when SNI
  wasn't used or when connecting to an IP address specified host.
  
  CVE-2016-3739
  
  Bug: https://curl.haxx.se/docs/adv_20160518A.html
  Reported-by: Moti Avrahami

- [Frank Gevaerts brought this change]

  CURLOPT_RESOLVE.3: fix typo
  
  Closes #811

- docs: CURLOPT_RESOLVE overrides CURLOPT_IPRESOLVE

- KNOWN_BUGS: GnuTLS backend skips really long certificate fields
  
  Closes #762

- CURLOPT_HTTPPOST.3: the data needs to be around while in use

- openssl: get_cert_chain: fix NULL dereference
  
  CID 1361815: Explicit null dereferenced (FORWARD_NULL)

- openssl: get_cert_chain: avoid NULL dereference
  
  CID 1361811: Explicit null dereferenced (FORWARD_NULL)

- dprintf_formatf: fix (false?) Coverity warning
  
  CID 1024412: Memory - illegal accesses (OVERRUN). Claimed to happen when
  we run over 'workend' but the condition says <= workend and for all I
  can see it should be safe. Compensating for the warning by adding a byte
  margin in the buffer.
  
  Also, removed the extra brace level indentation in the code and made it
  so that 'workend' is only assigned once within the function.

- RELEASE-NOTES: synced with 2dcb5adc72d6

- THANKS-filter: fixed Jonathan Cardoso

Jay Satiro (15 May 2016)
- ftp: fix incorrect out-of-memory code in Curl_pretransfer
  
  - Return value type must match function type.
  
  s/CURLM_OUT_OF_MEMORY/CURLE_OUT_OF_MEMORY/
  
  Caught by Travis CI

Daniel Stenberg (15 May 2016)
- ftp wildcard: segfault due to init only in multi_perform
  
  The proper FTP wildcard init is now more properly done in Curl_pretransfer()
  and the corresponding cleanup in Curl_close().
  
  The previous place of init/cleanup code made the internal pointer to be NULL
  when this feature was used with the multi_socket() API, as it was made within
  the curl_multi_perform() function.
  
  Reported-by: Jonathan Cardoso Machado
  Fixes #800

Jay Satiro (13 May 2016)
- libcurl-tlibcurl-thread: Update OpenSSL links
  
  Because the old OpenSSL link now redirects to their master documentation
  (currently 1.1.0), which does not document the required actions for
  OpenSSL <= 1.0.2.

Daniel Stenberg (13 May 2016)
- [Viktor Szakats brought this change]

  darwinssl.c: fix OS X codename typo in comment

- RELEASE-NOTES: synced with 68701e51c1f7
  
  Added 8 bug fixes and 5 more contrbutors

- [Jay Satiro brought this change]

  mprintf: Fix processing of width and prec args
  
  Prior to this change a width arg could be erroneously output, and also
  width and precision args could not be used together without crashing.
  
  "%0*d%s", 2, 9, "foo"
  
  Before: "092"
  After: "09foo"
  
  "%*.*s", 5, 2, "foo"
  
  Before: crash
  After: "   fo"
  
  Test 557 is updated to verify this and more

- [Michael Kaufmann brought this change]

  ConnectionExists: follow-up fix for proxy re-use
  
  Follow-up commit to 5823179
  
  Closes #648

- [Per Malmberg brought this change]

  darwinssl: fix certificate verification disable on OS X 10.8
  
  The new way of disabling certificate verification doesn't work on
  Mountain Lion (OS X 10.8) so we need to use the old way in that version
  too. I've tested this solution on versions 10.7.5, 10.8, 10.9, 10.10.2
  and 10.11.
  
  Closes #802

- [Cory Benfield brought this change]

  http2: Add space between colon and header value
  
  curl's representation of HTTP/2 responses involves transforming the
  response to a format that is similar to HTTP/1.1. Prior to this change,
  curl would do this by separating header names and values with only a
  colon, without introducing a space after the colon.
  
  While this is technically a valid way to represent a HTTP/1.1 header
  block, it is much more common to see a space following the colon. This
  change introduces that space, to ensure that incautious tools are safely
  able to parse the header block.
  
  This also ensures that the difference between the HTTP/1.1 and HTTP/2
  response layout is as minimal as possible.
  
  Bug: https://github.com/curl/curl/issues/797
  
  Closes #798
  Fixes #797

Kamil Dudka (12 May 2016)
- openssl: fix compile-time warning in Curl_ossl_check_cxn()
  
  ... introduced in curl-7_48_0-293-g2968c83:
  
  Error: COMPILER_WARNING:
  lib/vtls/openssl.c: scope_hint: In function ‘Curl_ossl_check_cxn’
  lib/vtls/openssl.c:767:15: warning: conversion to ‘int’ from ‘ssize_t’
  may alter its value [-Wconversion]

Jay Satiro (11 May 2016)
- openssl: stricter connection check function
  
  - In the case of recv error, limit returning 'connection still in place'
  to EINPROGRESS, EAGAIN and EWOULDBLOCK.
  
  This is an improvement on the parent commit which changed the openssl
  connection check to use recv MSG_PEEK instead of SSL_peek.
  
  Ref: https://github.com/curl/curl/commit/856baf5#comments

Daniel Stenberg (11 May 2016)
- [Anders Bakken brought this change]

  TLS: SSL_peek is not a const operation
  
  Calling SSL_peek can cause bytes to be read from the raw socket which in
  turn can upset the select machinery that determines whether there's data
  available on the socket.
  
  Since Curl_ossl_check_cxn only tries to determine whether the socket is
  alive and doesn't actually need to see the bytes SSL_peek seems like
  the wrong function to call.
  
  We're able to occasionally reproduce a connect timeout due to this
  bug. What happens is that Curl doesn't know to call SSL_connect again
  after the peek happens since data is buffered in the SSL buffer and thus
  select won't fire for this socket.
  
  Closes #795

Jay Satiro (9 May 2016)
- [Daniel Stenberg brought this change]

  TLS: move the ALPN/NPN enable bits to the connection
  
  Only protocols that actually have a protocol registered for ALPN and NPN
  should try to get that negotiated in the TLS handshake. That is only
  HTTPS (well, http/1.1 and http/2) right now. Previously ALPN and NPN
  would wrongly be used in all handshakes if libcurl was built with it
  enabled.
  
  Reported-by: Jay Satiro
  
  Fixes #789

Daniel Stenberg (8 May 2016)
- libcurl-thread.3: openssl 1.1.0 is safe, and so is boringssl

- [Antonio Larrosa brought this change]

  connect: fix invalid "Network is unreachable" errors
  
  Sometimes, in systems with both ipv4 and ipv6 addresses but where the
  network doesn't support ipv6, Curl_is_connected returns an error
  (intermittently) even if the ipv4 socket connects successfully.
  
  This happens because there's a for-loop that iterates on the sockets but
  the error variable is not resetted when the ipv4 is checked and is ok.
  
  This patch fixes this problem by setting error to 0 when checking the
  second socket and not having a result yet.
  
  Fixes #794

Jay Satiro (5 May 2016)
- FAQ: refer to thread safety guidelines

Daniel Stenberg (3 May 2016)
- connections: non-HTTP proxies on different ports aren't reused either
  
  Reported-by: Oleg Pudeyev and fuchaoqun
  
  Fixes #648

- http: make sure a blank header overrides accept_decoding
  
  Reported-by: rcanavan
  Assisted-by: Isaac Boukris
  Closes #785

- CHECKSRC.md: clarified, explained the whitelist file

- nroff-scan.pl: verify that references are made with \fI

- docs: unified man page references to use \fI

- TODO: 17.14 --fail without --location should treat 3xx as a failure
  
  Closes #727

- RELEASE-NOTES: synced with 7987f5cb14d

- [Isaac Boukris brought this change]

  CURLOPT_ACCEPT_ENCODING.3: Follow-up clarification
  
  Mention possible content-length mismatch with sum of bytes reported
  by write callbacks when auto decoding is enabled.
  
  See #785

- test1140: run nroff-scan to verify man pages

- nroff-scan.pl: verify the .BR references as well

- CURLOPT_CONV_TO_NETWORK_FUNCTION.3: fix bad man page reference

- CURLOPT_BUFFERSIZE.3: fix reference to CURLOPT_MAX_RECV_SPEED_LARGE

- curl_easy_pause.3: fix man page reference

Jay Satiro (1 May 2016)
- tool_cb_hdr: Fix --remote-header-name with schemeless URL
  
  - Move the existing scheme check from tool_operate.
  
  In the case of --remote-header-name we want to parse Content-disposition
  for a filename, but only if the scheme is http or https. A recent
  adjustment 0dc4d8e was made to account for schemeless URLs however it's
  not 100% accurate. To remedy that I've moved the scheme check to the
  header callback, since at that point the library has already determined
  the scheme.
  
  Bug: https://github.com/curl/curl/issues/760
  Reported-by: Kai Noda

Daniel Stenberg (1 May 2016)
- tls: make setting pinnedkey option fail if not supported
  
  to make it obvious to users trying to use the feature with TLS backends
  not supporting it.
  
  Discussed in #781
  Reported-by: Travis Burtrum

- nroff-scan.pl: verifies nroff pages
  
  ... not used by any test yet but can be used stand-alone.

- opts: fix broken/bad references

- [Michael Kaufmann brought this change]

  docs: fix bugs in CURLOPT_HTTP_VERSION.3 and CURLOPT_PIPEWAIT.3
  
  Closes #786

- CURLOPT_ACCEPT_ENCODING.3: clarified
  
  As discussed in #785

- curl.1: --mail-rcpt can be used multiple times
  
  Reported-by: mgendre
  Closes #784

- [Karlson2k brought this change]

  tests: Use 'pathhelp' for paths conversions in secureserver.pl
  
  Closes #675

- [Karlson2k brought this change]

  tests: Use 'pathhelp' for paths conversions in sshserver.pl

- [Karlson2k brought this change]

  tests: Use 'pathhelp' for current path in runtests.pl

- [Karlson2k brought this change]

  tests: pathhelp.pm to process paths on Msys/Cygwin

- lib: include curl_printf.h as one of the last headers
  
  curl_printf.h defines printf to curl_mprintf, etc. This can cause
  problems with external headers which may use
  __attribute__((format(printf, ...))) markers etc.
  
  To avoid that they cause problems with system includes, we include
  curl_printf.h after any system headers. That makes the three last
  headers to always be, and we keep them in this order:
  
   curl_printf.h
   curl_memory.h
   memdebug.h
  
  None of them include system headers, they all do funny #defines.
  
  Reported-by: David Benjamin
  
  Fixes #743

- memdebug.h: remove inclusion of other headers
  
  Mostly because they're not needed, because memdebug.h is always included
  last of all headers so the others already included the correct ones.
  
  But also, starting now we don't want this to accidentally include any
  system headers, as the header included _before_ this header may add
  defines and other fun stuff that we won't want used in system includes.

- [Jay Satiro brought this change]

  curl -J: make it work even without http:// scheme on URL
  
  It does open up a miniscule risk that one of the other protocols that
  libcurl could use would send back a Content-Disposition header and then
  curl would act on it even if not HTTP.
  
  A future mitigation for this risk would be to allow the callback to ask
  libcurl which protocol is being used.
  
  Verified with test 1312
  
  Closes #760

- manpage-scan.pl: also verify the command line option docs
  
  This script now also scans src/tool_getparam.c, docs/curl.1 and
  src/tool_help.c and will warn if any of them lists a command line option
  not mentioned in one of the other places.

- curl: show the long option version of -q in the -h list

- curl: remove "--socks" as "--socks5" turned 8
  
  In commit 2e42b0a2524 (Jan 2008) we made the option "--socks" deprecated
  and it has not been documented since. The more explicit socks options
  (like --socks4 or --socks5) should be used.

- curl.1: document the deprecated --ftp-ssl option

- curl: remove --http-request
  
  It was mentioned as deprecated already in commit ae1912cb0d4 from
  1999. It has not been documented in this millennium.

- curl: mention --ntlm-wb in -h list

- curl: -h output lacked --proxy-header

- curl.1: document --ntlm-wb

- curl.1: document the long format of -q: --disable

- curl.1: mention the deprecated --krb4 option

- curl.1: document --ftp-ssl-reqd
  
  Even if deprecated, document it so that people will find it as old
  scripts may still use it.

- curl: use --telnet-option as documented
  
  The code said "telnet-options" but no documentation ever said so. It
  worked fine since the code is fine with a unique match of the first
  part.

- getparam: remove support for --ftpport
  
  It has been deprecated and undocumented since commit ad5ead8bed7 (Dec
  2003). --ftp-port is the proper long option name.

- curl: make --disable work as long form of -q
  
  To make the aliases list reflect reality.

- aliases: remove trailing space from capath string

- cmdline parse: only single letter options have single-letter strings
  
  ... moved around options so that parsing the code to find all
  single-letter options easier.

Jay Satiro (28 Apr 2016)
- CURLINFO_TLS_SSL_PTR.3: Clarify SSL pointer availability
  
  Bug: https://curl.haxx.se/mail/lib-2016-04/0126.html
  Reported-by: Bru Rom

Daniel Stenberg (28 Apr 2016)
- curl_easy_getinfo.3: remove superfluous blank lines

- test1139: verifies libcurl option man page presence
  
  - checks that each option has its own man page present
  
  - checks that each option is mentioned in its corresponding index man
    page

- curl_easy_getinfo.3: added missing mention of CURLINFO_TLS_SESSION
  
  ... although it is deprecated.

Jay Satiro (28 Apr 2016)
- mbedtls: Fix session resume
  
  This also fixes PolarSSL session resume.
  
  Prior to this change the TLS session information wasn't properly
  saved and restored for PolarSSL and mbedTLS.
  
  Bug: https://curl.haxx.se/mail/lib-2016-01/0070.html
  Reported-by: Thomas Glanzmann
  
  Bug: https://curl.haxx.se/mail/lib-2016-04/0095.html
  Reported-by: Moti Avrahami

Daniel Stenberg (27 Apr 2016)
- RELEASE-NOTES: synced with f4298fcc6d2

- [Michael Kaufmann brought this change]

  opts: Fix some syntax errors in example code fragments
  
  Fixes #779

- openssl: avoid BN_print a NULL bignum
  
  OpenSSL 1.1.0-pre seems to return NULL(?) for a whole lot of those
  numbers so make sure the function handles this.
  
  Reported-by: Linus Nordberg

- [Marcel Raad brought this change]

  CONNECT_ONLY: don't close connection on GSS 401/407 reponses
  
  Previously, connections were closed immediately before the user had a
  chance to extract the socket when the proxy required Negotiate
  authentication.
  
  This regression was brought in with the security fix in commit
  79b9d5f1a42578f
  
  Closes #655

- CURLINFO_TLS_SESSION.3: clarify TLS library support before 7.48.0

- mbedtls.c: silly spellfix of a comment

- KNOWN_BUGS: 1.10 Strips trailing dot from host name
  
  Closes #716

- test1322: verify stripping of trailing dot from host name
  
  While being debated (in #716) and a violation of RFC 7230 section 5.4,
  this test verifies that the existing functionality works as intended. It
  strips the dot from the host name and uses the host without dot
  throughout the internals.

- multi: accidentally used resolved host name instead of proxy
  
  Regression introduced in 09b5a998
  
  Bug: https://curl.haxx.se/mail/lib-2016-04/0084.html
  Reported-by: BoBo

- symbols-in-versions: added new CURLSSLBACKEND_ symbols

- test148: fixed after the --ftp-create-dirs retry change
  
  follow-up commit to 3c1e84f569 as it made curl try a little harder

- curl.h: clarify curl_sslbackend for openssl clones and renames

- [Karlson2k brought this change]

  url.c: fixed DEBUGASSERT() for WinSock workaround
  
  If buffer is allocated, but nothing is received during prereceive
  stage, than number of processed bytes must be zero.
  
  Closes #778

- KNOWN_BUGS: --interface for ipv6 binds to unusable IP address
  
  Closes #686 for now.

- TODO: 1.17 Add support for IRIs
  
  Adding support for IRIs is a mouthful, but is probably interesting at
  least for areas and countries where the use of such "URLs" are growing
  popularity.
  
  Closes #776

- THANKS-filter: Travis Burtrum

- lib1517: checksrc compliance

- [moparisthebest brought this change]

  PolarSSL: Implement public key pinning

Patrick Monnerat (22 Apr 2016)
- os400: upgrade ILE/RPG binding

- curl.h: CURLOPT_CONNECT_TO sets a struct slist *, not a string

Daniel Stenberg (22 Apr 2016)
- contributors.sh: make --releasenotes implied
  
  It got too annoying to type =)

- RELEASE-NOTES: synced with 3c1e84f5693d8093

- curl: make --ftp-create-dirs retry on failure
  
  The underlying libcurl option used for this feature is
  CURLOPT_FTP_CREATE_MISSING_DIRS which has the ability to retry the dir
  creation, but it was never set to do that by the command line tool.
  
  Now it does.
  
  Bug: https://curl.haxx.se/mail/archive-2016-04/0021.html
  Reported-by: John Wanghui
  Help-by: Leif W

- [Henrik Gaßmann brought this change]

  winbuild: add mbedtls support
  
  Add WITH_MBEDTLS option. Make WITH_SSL, WITH_MBEDTLS and ENABLE_WINSSL
  options mutual exclusive.
  
  Closes #606

- KNOWN_BUGS: fixed "5.6 Improper use of Autoconf cache variables"
  
  As of commit d9f3b365a3

- [Irfan Adilovic brought this change]

  configure: ac_cv_ -> curl_cv_ for write-only vars
  
  These configure vars are modified in a curl-specific way but never
  evaluated or loaded from cache, even though they are designated as
  _cv_. We could either implement proper AC_CACHE_CHECKs for them, or
  remove them completely.
  
  Fixes #603 as ac_cv_func_gethostbyname is no longer clobbered, and
  AC_CHECK_FUNC(gethostbyname...) will no longer spuriously succeed after
  the first configure run with caching.
  
  `ac_cv_func_strcasecmp` is curious, see #770.
  
  `eval "ac_cv_func_$func=yes"` can still cause problems as it works in
  tandem with AC_CHECK_FUNCS and then potentially modifies its result. It
  would be best to rewrite this test to use a new CURL_CHECK_FUNCS macro,
  which works the same as AC_CHECK_FUNCS but relies on caching the values
  of curl_cv_func_* variables, without modifiying ac_cv_func_*.

- [Irfan Adilovic brought this change]

  configure: ac_cv_ -> curl_cv_ for r/w vars
  
  These configure vars are modified in a curl-specific way and modified by
  the configure process, but are never loaded from cache, even though they
  are designated as _cv_. We should implement proper AC_CACHE_CHECKs for
  them eventually.

- [Irfan Adilovic brought this change]

  configure: ac_cv_func_clock_gettime -> curl_...
  
  This variable must not be cached in its current form, as any cached
  information will prevent the next configure run from determining the
  correct LIBS needed for the function. Thus, rename prefix `ac_cv_` to
  just `curl_`.

- [Irfan Adilovic brought this change]

  configure: ac_cv_ -> curl_cv_ for all cached vars
  
  This was automated by:
  
  sed -b -i -f <(ack -A1 AC_CACHE_CHECK | \
                 ack -o 'ac_cv_.*?\b' | \
                 sort -u | xargs -n1 bash -c \
                      'echo "s/$0/curl_cv_${0#ac_cv_}/g"') \
      $(git ls-files)
  
  This only changed the prefix for 16 variables actually checked with
  AC_CACHE_CHECK.

- openssl: builds with OpenSSL 1.1.0-pre5
  
  The RSA, DSA and DH structs are now opaque and require use of new APIs
  
  Fixes #763

Steve Holme (20 Apr 2016)
- url.c: Prefer we don't use explicit NULLs in conditions
  
  Fixed commit fa5fa65a30 to not use NULLs in if condition.

Daniel Stenberg (20 Apr 2016)
- [Isaac Boukris brought this change]

  NTLM: check for NULL pointer before deferencing
  
  At ConnectionExists, both check->proxyuser and check->proxypasswd
  could be NULL, so make sure to check first.
  
  Fixes #765

- [Karlson2k brought this change]

  tests: added test1517
  
  ... for checking ability to receive full HTTP response when POST request
  is used with slow read callback function.
  
  This test checks for bug #657 and verifies the work-around from
  72d5e144fbc6.
  
  Closes #720

- [Karlson2k brought this change]

  sendf.c: added ability to call recv() before send() as workaround
  
  WinSock destroys recv() buffer if send() is failed. As result - server
  response may be lost if server sent it while curl is still sending
  request. This behavior noticeable on HTTP server short replies if
  libcurl use several send() for request (usually for POST request).
  To workaround this problem, libcurl use recv() before every send() and
  keeps received data in intermediate buffer for further processing.
  
  Fixes: #657
  Closes: #668

Kamil Dudka (19 Apr 2016)
- connect: make sure that rc is initialized in singleipconnect()
  
  This commit fixes a Clang warning introduced in curl-7_48_0-190-g8f72b13:
  
  Error: CLANG_WARNING:
  lib/connect.c:1120:11: warning: The right operand of '==' is a garbage value
  1118|       }
  1119|
  1120|->     if(-1 == rc)
  1121|         error = SOCKERRNO;
  1122|     }

Daniel Stenberg (19 Apr 2016)
- make/checksrc: use $srcdir, not $top_srcdir

- src/checksrc.whitelist: removed

- tool_operate: switch to inline checksrc ignore

- lib/checksrc.whitelist: not needed anymore
  
  ... as checksrc now skips comments

- vtls.h: remove a space before semicolon
  
  ... that the new checksrc detected

- darwinssl: removed commented out code

- http_chunks: removed checksrc disable
  
  ... since checksrc now skips comments

- imap: inlined checksrc disable instead of whitelist edit

- checksrc: taught to skip comments
  
  ... but output non-stripped version of the line, even if that then can
  make the script identify the wrong position in the line at
  times. Showing the line stripped (ie without comments) is just too
  surprising.

- opts/Makefile.am: list all docs file one by one
  
  ... to make it easier to add lines in patches that won't just break all
  other patches trying to add lines too.

- curl_easy_setopt.3: mention CURLOPT_TCP_FASTOPEN

- RELEASE-NOTES: synced with 03de4e4b219
  
  (since we just merged two major features)

- [Alessandro Ghedini brought this change]

  connect: implement TCP Fast Open for Linux
  
  Closes #660

- [Alessandro Ghedini brought this change]

  tool: add --tcp-fastopen option

- [Alessandro Ghedini brought this change]

  connect: implement TCP Fast Open for OS X

- [Alessandro Ghedini brought this change]

  url: add CURLOPT_TCP_FASTOPEN option

- checksrc: pass on -D so the whitelists are found correctly

- configure: remove check for libresolve
  
  'strncasecmp' was once provided by libresolv (no trailing e) for SunOS,
  but this check is broken and most likely adds nothing useful. Removing
  now.
  
  Reported-by: Irfan Adilovic
  
  Discussed in #770

- scripts/make: use $(EXEEXT) for executables
  
  Reported-by: bodop
  
  Fixes #771

- includes: avoid duplicate memory callback typdefs even harder

- checksrc/makefile.am: use $top_srcdir to find source files
  
  ... to properly support out of source tree builds.

- RELEASE-NOTES: synced with 26ec93dd6aeba8dfb5

- opts: fix option references missing (section)

- [Michael Kaufmann brought this change]

  news: CURLOPT_CONNECT_TO and --connect-to
  
  Makes curl connect to the given host+port instead of the host+port found
  in the URL.

- makefile.vc6: use d suffix on debug object
  
  To allow both release and debug builds in parallel.
  
  Reported-by: Rod Widdowson
  
  Fixes #769

Jay Satiro (12 Apr 2016)
- http2: Use size_t type for data drain count
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- http2: Improve header parsing
  
  - Error if a header line is larger than supported.
  
  - Warn if cumulative header line length may be larger than supported.
  
  - Allow spaces when parsing the path component.
  
  - Make sure each header line ends in \r\n. This fixes an out of bounds.
  
  - Disallow header continuation lines until we decide what to do.
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- http2: Add Curl_http2_strerror for HTTP/2 error codes
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- [Tatsuhiro Tsujikawa brought this change]

  http2: Don't increment drain when one header field is received
  
  Sicne we write header field in temporary location, not in the memory
  that upper layer provides, incrementing drain should not happen.
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- [Tatsuhiro Tsujikawa brought this change]

  http2: Ensure that http2_handle_stream_close is called
  
  This commit ensures that streams which was closed in on_stream_close
  callback gets passed to http2_handle_stream_close.  Previously, this
  might not happen.  To achieve this, we increment drain property to
  forcibly call recv function for that stream.
  
  To more accurately check that we have no pending event before shutting
  down HTTP/2 session, we sum up drain property into
  http_conn.drain_total.  We only shutdown session if that value is 0.
  
  With this commit, when stream was closed before reading response
  header fields, error code CURLE_HTTP2_STREAM is returned even if
  HTTP/2 level error is NO_ERROR.  This signals the upper layer that
  stream was closed by error just like TCP connection close in HTTP/1.
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- [Tatsuhiro Tsujikawa brought this change]

  http2: Process paused data first before tear down http2 session
  
  This commit ensures that data from network are processed before HTTP/2
  session is terminated.  This is achieved by pausing nghttp2 whenever
  different stream than current easy handle receives data.
  
  This commit also fixes the bug that sometimes processing hangs when
  multiple HTTP/2 streams are multiplexed.
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- [Tatsuhiro Tsujikawa brought this change]

  http2: Check session closure early in http2_recv
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

- [Tatsuhiro Tsujikawa brought this change]

  http2: Add handling stream level error
  
  Previously, when a stream was closed with other than NGHTTP2_NO_ERROR
  by RST_STREAM, underlying TCP connection was dropped.  This is
  undesirable since there may be other streams multiplexed and they are
  very much fine.  This change introduce new error code
  CURLE_HTTP2_STREAM, which indicates stream error that only affects the
  relevant stream, and connection should be kept open.  The existing
  CURLE_HTTP2 means connection error in general.
  
  Ref: https://github.com/curl/curl/issues/659
  Ref: https://github.com/curl/curl/pull/663

Daniel Stenberg (11 Apr 2016)
- http2: drain the socket better...
  
  ... but ignore EAGAIN if the stream has ended so that we don't end up in
  a loop. This is a follow-up to c8ab613 in order to avoid the problem
  d261652 was made to fix.
  
  Reported-by: Jay Satiro
  Clues-provided-by: Tatsuhiro Tsujikawa
  
  Discussed in #750

- KNOWN_BUGS: added info for "Hangs with PolarSSL"

- KNOWN_BUGS: 1.9 HTTP/2 frames while in the connection pool kill reuse
  
  Closes #750

- build: include scripts/ in the dist

Steve Holme (9 Apr 2016)
- CURLOPT_SOCKS5_GSSAPI_SERVICE: Merged with CURLOPT_PROXY_SERVICE_NAME
  
  As these two options provide identical functionality, the former for
  SOCK5 proxies and the latter for HTTP proxies, merged the two options
  together.
  
  As such CURLOPT_SOCKS5_GSSAPI_SERVICE is marked as deprecated as of
  7.49.0.

- urldata: Use bool for socks5_gssapi_nec as it is a flag
  
  This value is set to TRUE or FALSE so should be a bool and not a long.

- url: Ternary operator code style changes

- CODE_STYLE: Added ternary operator example to 'Space around operators'
  
  Following conversation on the libcurl mailing list.

- sasl: Fixed compilation errors from commit 9d89a0387
  
  ...when GSS-API or Windows SSPI are not used.

- url: Corrected comments following 9d89a0387

- docs: Added clarification following commit 9d89a0387

- Makefile: Fixed echo of checksrc check

- checksrc: Fix issue with the autobuilds not picking up the whitelist

- checksrc: Added missing vauth and vtls directories

- ftp/imap/pop3/smtp: Allow the service name to be overridden
  
  Allow the service name to be overridden for DIGIST-MD5 and Kerberos 5
  authentication in FTP, IMAP, POP3 and SMTP.

- http_negotiate: Calculate service name and proxy service name locally
  
  Calculate the service name and proxy service names locally, rather than
  in url.c which will allow for us to support overriding the service name
  for other protocols such as FTP, IMAP, POP3 and SMTP.

- ROADMAP: Updated following the move of the authentication code

Patrick Monnerat (8 Apr 2016)
- KNOWN_BUGS: openldap hangs. TODO: binary SASL.

Daniel Stenberg (8 Apr 2016)
- KNOWN_BUGS: 5.6 Improper use of Autoconf cache variables
  
  Closes #603

- KNOWN_BUGS: 11.2 error buffer not set...
  
  Closes #544

- KNOWN_BUGS: 11.1 Curl leaks .onion hostnames in DNS
  
  Closes #543

- KNOWN_BUGS: 1.8 DNS timing is wrong for HTTP redirects
  
  Closes #522

- TODO: HTTP/2 "prior knowledge" is implemented!

- [Damien Vielpeau brought this change]

  mbedtls: fix MBEDTLS_DEBUG builds

- mbedtls: implement and provide *_data_pending()
  
  ... as otherwise we might get stuck thinking there's no more data to
  handle.
  
  Reported-by: Damien Vielpeau
  
  Fixes #737

- mbedtls: follow-up for the previous commit

- mbedtls.c: name space pollution fix, Use 'Curl_'

- mbedtls.c: changed private prefix to mbed_
  
  mbedtls_ is the prefix used by the mbedTLS library itself so we should
  avoid using that for our private functions.

- mbedtls.h: fix compiler warnings

- Revert "winbuild: trying to set some files eol=crlf for git"
  
  This reverts commit 9c08b4f1e7eced5a4d3782a3e0daa484c9d77d21.
  
  Didn't help. Caused problems.
  
  Fixes #756

- curl.1: use example.com more
  
  Make (most) example snippets use the example.com domain instead of the
  random ones picked and used before. Some of those were probably
  legitimate sites and some not. example.com is designed for this purpose.

- [Michael Kaufmann brought this change]

  HTTP2: Add a space character after the status code
  
  The space character after the status code is mandatory, even if the
  reason phrase is empty (see RFC 7230 section 3.1.2)
  
  Closes #755

- [Viktor Szakats brought this change]

  URLs: change http to https in many places
  
  Closes #754

- winbuild: trying to set some files eol=crlf for git
  
  Thinking it might help to apply patches etc with git.

- [Theodore Dubois brought this change]

  curl.1: change example for -F
  
  It's a bad idea to send your passwords anywhere, especially over HTTP.
  Modified example to send a picture instead.
  
  Fixes #752

- KNOWN_BUGS: reorganized and cleaned up
  
  Now sorted into categories and organized in the same style we do the
  TODO document. It will make each issue linked properly on the
  https://curl.haxx.se/docs/knownbugs.html web page.
  
  The sections should make it easier to find issues and issues related to
  areas of the reader's specific interest.

Jay Satiro (6 Apr 2016)
- KNOWN_BUGS: #95 curl in Windows can't handle Unicode arguments

Steve Holme (6 Apr 2016)
- KNOWN_BUGS: Use https://curl.haxx.se URL for github based issues

- CHECKSRC.md: Corrected some typos

- RELEASE-NOTES: Corrected last updated
  
  Included a summary of the checksrc.bat updates and combined two krb5
  changes as they should have been implemented at the same time.

- vauth: Corrected a number of typos in comments
  
  Reported-by: Michael Osipov

Jay Satiro (5 Apr 2016)
- KNOWN_BUGS: #94 IMAP custom requests use the LIST handler
  
  Bug: https://github.com/curl/curl/issues/536
  Reported-by: eXeC64@users.noreply.github.com

Daniel Stenberg (5 Apr 2016)
- KNOWN_BUGS: remove 68, 70 and 72.
  
  Due to their age (we don't fully know if they actually remain) and lack
  of detail - very few people will bother to find out what they're about
  or work on them. If people truly still suffer from any of these, I
  assume they will be reported again and then we'll deal with them.
  
  72. "Pausing pipeline problems."
    https://curl.haxx.se/mail/lib-2009-07/0214.html
  
  70. Problem re-using easy handle after call to curl_multi_remove_handle
    https://curl.haxx.se/mail/lib-2009-07/0249.html
  
  68. "More questions about ares behavior".
    https://curl.haxx.se/mail/lib-2009-08/0012.html

- KNOWN_BUGS: remove 92 and 88, fixed

- http2: fix connection reuse when PING comes after last DATA
  
  It turns out the google GFE HTTP/2 servers send a PING frame immediately
  after a stream ends and its last DATA has been received by curl. So if
  we don't drain that from the socket, it makes the socket readable in
  subsequent checks and libcurl then (wrongly) assumes the connection is
  dead when trying to reuse the connection.
  
  Reported-by: Joonas Kuorilehto
  
  Discussed in #750

- multi: remove trailing space in debug output

- RELEASE-NOTES: synced with 86e97b642fb

- CHECKSRC.md: mention cmdline options, fix the bullet list

- docs/CHECKSRC.md: initial version

Steve Holme (3 Apr 2016)
- checksrc.bat: Added support for the examples

Daniel Stenberg (3 Apr 2016)
- lib/src: fix the checksrc invoke
  
  ... now works correctly when invoke from the root makefile