3 You always find news about what's going on as well as the latest versions
4 from the curl web pages, located at:
10 Get the main page from netscape's web-server:
12 curl http://www.netscape.com/
14 Get the root README file from funet's ftp-server:
16 curl ftp://ftp.funet.fi/README
18 Get a web page from a server using port 8000:
20 curl http://www.weirdserver.com:8000/
22 Get a list of the root directory of an FTP site:
24 curl ftp://cool.haxx.se/
26 Get a gopher document from funet's gopher server:
28 curl gopher://gopher.funet.fi
30 Get the definition of curl from a dictionary:
32 curl dict://dict.org/m:curl
34 Fetch two documents at once:
36 curl ftp://cool.haxx.se/ http://www.weirdserver.com:8000/
40 Get a web page and store in a local file:
42 curl -o thatpage.html http://www.netscape.com/
44 Get a web page and store in a local file, make the local file get the name
45 of the remote document (if no file name part is specified in the URL, this
48 curl -O http://www.netscape.com/index.html
50 Fetch two files and store them with their remote names:
52 curl -O www.haxx.se/index.html -O curl.haxx.se/download.html
58 To ftp files using name+passwd, include them in the URL like:
60 curl ftp://name:passwd@machine.domain:port/full/path/to/file
62 or specify them with the -u flag like
64 curl -u name:passwd ftp://machine.domain:port/full/path/to/file
68 The HTTP URL doesn't support user and password in the URL string. Curl
69 does support that anyway to provide a ftp-style interface and thus you can
72 curl http://name:passwd@machine.domain/full/path/to/file
74 or specify user and password separately like in
76 curl -u name:passwd http://machine.domain/full/path/to/file
78 NOTE! Since HTTP URLs don't support user and password, you can't use that
79 style when using Curl via a proxy. You _must_ use the -u style fetch
80 during such circumstances.
84 Probably most commonly used with private certificates, as explained below.
88 Curl features no password support for gopher.
92 Get an ftp file using a proxy named my-proxy that uses port 888:
94 curl -x my-proxy:888 ftp://ftp.leachsite.com/README
96 Get a file from a HTTP server that requires user and password, using the
99 curl -u user:passwd -x my-proxy:888 http://www.get.this/
101 Some proxies require special authentication. Specify by using -U as above:
103 curl -U user:passwd -x my-proxy:888 http://www.get.this/
105 See also the environment variables Curl support that offer further proxy
110 With HTTP 1.1 byte-ranges were introduced. Using this, a client can request
111 to get only one or more subparts of a specified document. Curl supports
112 this with the -r flag.
114 Get the first 100 bytes of a document:
116 curl -r 0-99 http://www.get.this/
118 Get the last 500 bytes of a document:
120 curl -r -500 http://www.get.this/
122 Curl also supports simple ranges for FTP files as well. Then you can only
123 specify start and stop position.
125 Get the first 100 bytes of a document using FTP:
127 curl -r 0-99 ftp://www.get.this/README
133 Upload all data on stdin to a specified ftp site:
135 curl -T - ftp://ftp.upload.com/myfile
137 Upload data from a specified file, login with user and password:
139 curl -T uploadfile -u user:passwd ftp://ftp.upload.com/myfile
141 Upload a local file to the remote site, and use the local file name remote
144 curl -T uploadfile -u user:passwd ftp://ftp.upload.com/
146 Upload a local file to get appended to the remote file using ftp:
148 curl -T localfile -a ftp://ftp.upload.com/remotefile
150 Curl also supports ftp upload through a proxy, but only if the proxy is
151 configured to allow that kind of tunneling. If it does, you can run curl in
152 a fashion similar to:
154 curl --proxytunnel -x proxy:port -T localfile ftp.upload.com
158 Upload all data on stdin to a specified http site:
160 curl -T - http://www.upload.com/myfile
162 Note that the http server must've been configured to accept PUT before this
163 can be done successfully.
165 For other ways to do http data upload, see the POST section below.
169 If curl fails where it isn't supposed to, if the servers don't let you
170 in, if you can't understand the responses: use the -v flag to get VERBOSE
171 fetching. Curl will output lots of info and all data it sends and
172 receives in order to let the user see all client-server interaction.
174 curl -v ftp://ftp.upload.com/
178 Different protocols provide different ways of getting detailed information
179 about specific files/documents. To get curl to show detailed information
180 about a single file, you should use -I/--head option. It displays all
181 available info on a single file for HTTP and FTP. The HTTP information is a
184 For HTTP, you can get the header information (the same as -I would show)
185 shown before the data by using -i/--include. Curl understands the
186 -D/--dump-header option when getting files from both FTP and HTTP, and it
187 will then store the headers in the specified file.
189 Store the HTTP headers in a separate file (headers.txt in the example):
191 curl --dump-header headers.txt curl.haxx.se
193 Note that headers stored in a separate file can be very useful at a later
194 time if you want curl to use cookies sent by the server. More about that in
199 It's easy to post data using curl. This is done using the -d <data>
200 option. The post data must be urlencoded.
202 Post a simple "name" and "phone" guestbook.
204 curl -d "name=Rafael%20Sagula&phone=3320780" \
205 http://www.where.com/guest.cgi
207 How to post a form with curl, lesson #1:
209 Dig out all the <input> tags in the form that you want to fill in. (There's
210 a perl program called formfind.pl on the curl site that helps with this).
212 If there's a "normal" post, you use -d to post. -d takes a full "post
213 string", which is in the format
215 <variable1>=<data1>&<variable2>=<data2>&...
217 The 'variable' names are the names set with "name=" in the <input> tags, and
218 the data is the contents you want to fill in for the inputs. The data *must*
219 be properly URL encoded. That means you replace space with + and that you
220 write weird letters with %XX where XX is the hexadecimal representation of
221 the letter's ASCII code.
225 (page located at http://www.formpost.com/getthis/
227 <form action="post.cgi" method="post">
228 <input name=user size=10>
229 <input name=pass type=password size=10>
230 <input name=id type=hidden value="blablabla">
231 <input name=ding value="submit">
234 We want to enter user 'foobar' with password '12345'.
236 To post to this, you enter a curl command line like:
238 curl -d "user=foobar&pass=12345&id=blablabla&dig=submit" (continues)
239 http://www.formpost.com/getthis/post.cgi
242 While -d uses the application/x-www-form-urlencoded mime-type, generally
243 understood by CGI's and similar, curl also supports the more capable
244 multipart/form-data type. This latter type supports things like file upload.
246 -F accepts parameters like -F "name=contents". If you want the contents to
247 be read from a file, use <@filename> as contents. When specifying a file,
248 you can also specify the file content type by appending ';type=<mime type>'
249 to the file name. You can also post the contents of several files in one
250 field. For example, the field name 'coolfiles' is used to send three files,
251 with different content types using the following syntax:
253 curl -F "coolfiles=@fil1.gif;type=image/gif,fil2.txt,fil3.html" \
254 http://www.post.com/postit.cgi
256 If the content-type is not specified, curl will try to guess from the file
257 extension (it only knows a few), or use the previously specified type (from
258 an earlier file if several files are specified in a list) or else it will
259 using the default type 'text/plain'.
261 Emulate a fill-in form with -F. Let's say you fill in three fields in a
262 form. One field is a file name which to post, one field is your name and one
263 field is a file description. We want to post the file we have written named
264 "cooltext.txt". To let curl do the posting of this data instead of your
265 favourite browser, you have to read the HTML source of the form page and
266 find the names of the input fields. In our example, the input field names
267 are 'file', 'yourname' and 'filedescription'.
269 curl -F "file=@cooltext.txt" -F "yourname=Daniel" \
270 -F "filedescription=Cool text file with cool text inside" \
271 http://www.post.com/postit.cgi
273 To send two files in one post you can do it in two ways:
275 1. Send multiple files in a single "field" with a single field name:
277 curl -F "pictures=@dog.gif,cat.gif"
279 2. Send two fields with two field names:
281 curl -F "docpicture=@dog.gif" -F "catpicture=@cat.gif"
285 A HTTP request has the option to include information about which address
286 that referred to actual page. Curl allows you to specify the
287 referrer to be used on the command line. It is especially useful to
288 fool or trick stupid servers or CGI scripts that rely on that information
289 being available or contain certain data.
291 curl -e www.coolsite.com http://www.showme.com/
293 NOTE: The referer field is defined in the HTTP spec to be a full URL.
297 A HTTP request has the option to include information about the browser
298 that generated the request. Curl allows it to be specified on the command
299 line. It is especially useful to fool or trick stupid servers or CGI
300 scripts that only accept certain browsers.
304 curl -A 'Mozilla/3.0 (Win95; I)' http://www.nationsbank.com/
306 Other common strings:
307 'Mozilla/3.0 (Win95; I)' Netscape Version 3 for Windows 95
308 'Mozilla/3.04 (Win95; U)' Netscape Version 3 for Windows 95
309 'Mozilla/2.02 (OS/2; U)' Netscape Version 2 for OS/2
310 'Mozilla/4.04 [en] (X11; U; AIX 4.2; Nav)' NS for AIX
311 'Mozilla/4.05 [en] (X11; U; Linux 2.0.32 i586)' NS for Linux
313 Note that Internet Explorer tries hard to be compatible in every way:
314 'Mozilla/4.0 (compatible; MSIE 4.01; Windows 95)' MSIE for W95
316 Mozilla is not the only possible User-Agent name:
317 'Konqueror/1.0' KDE File Manager desktop client
318 'Lynx/2.7.1 libwww-FM/2.14' Lynx command line browser
322 Cookies are generally used by web servers to keep state information at the
323 client's side. The server sets cookies by sending a response line in the
324 headers that looks like 'Set-Cookie: <data>' where the data part then
325 typically contains a set of NAME=VALUE pairs (separated by semicolons ';'
326 like "NAME1=VALUE1; NAME2=VALUE2;"). The server can also specify for what
327 path the "cookie" should be used for (by specifying "path=value"), when the
328 cookie should expire ("expire=DATE"), for what domain to use it
329 ("domain=NAME") and if it should be used on secure connections only
332 If you've received a page from a server that contains a header like:
333 Set-Cookie: sessionid=boo123; path="/foo";
335 it means the server wants that first pair passed on when we get anything in
336 a path beginning with "/foo".
338 Example, get a page that wants my name passed in a cookie:
340 curl -b "name=Daniel" www.sillypage.com
342 Curl also has the ability to use previously received cookies in following
343 sessions. If you get cookies from a server and store them in a file in a
346 curl --dump-header headers www.example.com
348 ... you can then in a second connect to that (or another) site, use the
349 cookies from the 'headers' file like:
351 curl -b headers www.example.com
353 Note that by specifying -b you enable the "cookie awareness" and with -L
354 you can make curl follow a location: (which often is used in combination
355 with cookies). So that if a site sends cookies and a location, you can
356 use a non-existing file to trigger the cookie awareness like:
358 curl -L -b empty.txt www.example.com
360 The file to read cookies from must be formatted using plain HTTP headers OR
361 as netscape's cookie file. Curl will determine what kind it is based on the
362 file contents. In the above command, curl will parse the header and store
363 the cookies received from www.example.com. curl will send to the server the
364 stored cookies which match the request as it follows the location. The
365 file "empty.txt" may be a non-existant file.
370 The progress meter exists to show a user that something actually is
371 happening. The different fields in the output have the following meaning:
373 % Total % Received % Xferd Average Speed Time Curr.
374 Dload Upload Total Current Left Speed
375 0 151M 0 38608 0 0 9406 0 4:41:43 0:00:04 4:41:39 9287
378 % - percentage completed of the whole transfer
379 Total - total size of the whole expected transfer
380 % - percentage completed of the download
381 Received - currently downloaded amount of bytes
382 % - percentage completed of the upload
383 Xferd - currently uploaded amount of bytes
385 Dload - the average transfer speed of the download
387 Upload - the average transfer speed of the upload
388 Time Total - expected time to complete the operation
389 Time Current - time passed since the invoke
390 Time Left - expected time left to completetion
391 Curr.Speed - the average transfer speed the last 5 seconds (the first
392 5 seconds of a transfer is based on less time of course.)
394 The -# option will display a totally different progress bar that doesn't
395 need much explanation!
399 Curl allows the user to set the transfer speed conditions that must be met
400 to let the transfer keep going. By using the switch -y and -Y you
401 can make curl abort transfers if the transfer speed is below the specified
402 lowest limit for a specified time.
404 To have curl abort the download if the speed is slower than 3000 bytes per
405 second for 1 minute, run:
407 curl -Y 3000 -y 60 www.far-away-site.com
409 This can very well be used in combination with the overall time limit, so
410 that the above operatioin must be completed in whole within 30 minutes:
412 curl -m 1800 -Y 3000 -y 60 www.far-away-site.com
414 Forcing curl not to transfer data faster than a given rate is also possible,
415 which might be useful if you're using a limited bandwidth connection and you
416 don't want your transfer to use all of it.
418 Make curl transfer data no faster than 10 kilobytes per second:
420 curl --limit-rate 10K www.far-away-site.com
424 curl --limit-rate 10240 www.far-away-site.com
426 Or prevent curl from uploading data faster than 1 megabyte per second:
428 curl -T upload --limit-rate 1M ftp://uploadshereplease.com
432 Curl automatically tries to read the .curlrc file (or _curlrc file on win32
433 systems) from the user's home dir on startup.
435 The config file could be made up with normal command line switches, but you
436 can also specify the long options without the dashes to make it more
437 readable. You can separate the options and the parameter with spaces, or
438 with = or :. Comments can be used within the file. If the first letter on a
439 line is a '#'-letter the rest of the line is treated as a comment.
441 If you want the parameter to contain spaces, you must inclose the entire
442 parameter within double quotes ("). Within those quotes, you specify a
445 NOTE: You must specify options and their arguments on the same line.
447 Example, set default time out and proxy in a config file:
449 # We want a 30 minute timeout:
451 # ... and we use a proxy for all accesses:
452 proxy = proxy.our.domain.com:8080
454 White spaces ARE significant at the end of lines, but all white spaces
455 leading up to the first characters of each line are ignored.
457 Prevent curl from reading the default file by using -q as the first command
458 line parameter, like:
460 curl -q www.thatsite.com
462 Force curl to get and display a local help page in case it is invoked
463 without URL by making a config file similar to:
466 url = "http://help.with.curl.com/curlhelp.html"
468 You can specify another config file to be read by using the -K/--config
469 flag. If you set config file name to "-" it'll read the config from stdin,
470 which can be handy if you want to hide options from being visible in process
473 echo "user = user:passwd" | curl -K - http://that.secret.site.com
477 When using curl in your own very special programs, you may end up needing
478 to pass on your own custom headers when getting a web page. You can do
479 this by using the -H flag.
481 Example, send the header "X-you-and-me: yes" to the server when getting a
484 curl -H "X-you-and-me: yes" www.love.com
486 This can also be useful in case you want curl to send a different text in a
487 header than it normally does. The -H header you specify then replaces the
488 header curl would normally send. If you replace an internal header with an
489 empty one, you prevent that header from being sent. To prevent the Host:
490 header from being used:
492 curl -H "Host:" www.server.com
496 Do note that when getting files with the ftp:// URL, the given path is
497 relative the directory you enter. To get the file 'README' from your home
498 directory at your ftp site, do:
500 curl ftp://user:passwd@my.site.com/README
502 But if you want the README file from the root directory of that very same
503 site, you need to specify the absolute file name:
505 curl ftp://user:passwd@my.site.com//README
507 (I.e with an extra slash in front of the file name.)
511 The FTP protocol requires one of the involved parties to open a second
512 connction as soon as data is about to get transfered. There are two ways to
515 The default way for curl is to issue the PASV command which causes the
516 server to open another port and await another connection performed by the
517 client. This is good if the client is behind a firewall that don't allow
518 incoming connections.
520 curl ftp.download.com
522 If the server for example, is behind a firewall that don't allow connections
523 on other ports than 21 (or if it just doesn't support the PASV command), the
524 other way to do it is to use the PORT command and instruct the server to
525 connect to the client on the given (as parameters to the PORT command) IP
528 The -P flag to curl supports a few different options. Your machine may have
529 several IP-addresses and/or network interfaces and curl allows you to select
530 which of them to use. Default address can also be used:
532 curl -P - ftp.download.com
534 Download with PORT but use the IP address of our 'le0' interface (this does
535 not work on windows):
537 curl -P le0 ftp.download.com
539 Download with PORT but use 192.168.0.10 as our IP address to use:
541 curl -P 192.168.0.10 ftp.download.com
545 Get a web page from a server using a specified port for the interface:
547 curl --interface eth0:1 http://www.netscape.com/
551 curl --interface 192.168.1.10 http://www.netscape.com/
555 Secure HTTP requires SSL libraries to be installed and used when curl is
556 built. If that is done, curl is capable of retrieving and posting documents
557 using the HTTPS procotol.
561 curl https://www.secure-site.com
563 Curl is also capable of using your personal certificates to get/post files
564 from sites that require valid certificates. The only drawback is that the
565 certificate needs to be in PEM-format. PEM is a standard and open format to
566 store certificates with, but it is not used by the most commonly used
567 browsers (Netscape and MSEI both use the so called PKCS#12 format). If you
568 want curl to use the certificates you use with your (favourite) browser, you
569 may need to download/compile a converter that can convert your browser's
570 formatted certificates to PEM formatted ones. This kind of converter is
571 included in recent versions of OpenSSL, and for older versions Dr Stephen
572 N. Henson has written a patch for SSLeay that adds this functionality. You
573 can get his patch (that requires an SSLeay installation) from his site at:
574 http://www.drh-consultancy.demon.co.uk/
576 Example on how to automatically retrieve a document using a certificate with
579 curl -E /path/to/cert.pem:password https://secure.site.com/
581 If you neglect to specify the password on the command line, you will be
582 prompted for the correct password before any data can be received.
584 Many older SSL-servers have problems with SSLv3 or TLS, that newer versions
585 of OpenSSL etc is using, therefore it is sometimes useful to specify what
586 SSL-version curl should use. Use -3, -2 or -1 to specify that exact SSL
587 version to use (for SSLv3, SSLv2 or TLSv1 respectively):
589 curl -2 https://secure.site.com/
591 Otherwise, curl will first attempt to use v3 and then v2.
593 To use OpenSSL to convert your favourite browser's certificate into a PEM
594 formatted one that curl can use, do something like this (assuming netscape,
595 but IE is likely to work similarly):
597 You start with hitting the 'security' menu button in netscape.
599 Select 'certificates->yours' and then pick a certificate in the list
601 Press the 'export' button
603 enter your PIN code for the certs
605 select a proper place to save it
607 Run the 'openssl' application to convert the certificate. If you cd to the
608 openssl installation, you can do it like:
610 # ./apps/openssl pkcs12 -in [file you saved] -clcerts -out [PEMfile]
613 RESUMING FILE TRANSFERS
615 To continue a file transfer where it was previously aborted, curl supports
616 resume on http(s) downloads as well as ftp uploads and downloads.
618 Continue downloading a document:
620 curl -C - -o file ftp://ftp.server.com/path/file
622 Continue uploading a document(*1):
624 curl -C - -T file ftp://ftp.server.com/path/file
626 Continue downloading a document from a web server(*2):
628 curl -C - -o file http://www.server.com/
630 (*1) = This requires that the ftp server supports the non-standard command
631 SIZE. If it doesn't, curl will say so.
633 (*2) = This requires that the web server supports at least HTTP/1.1. If it
634 doesn't, curl will say so.
638 HTTP allows a client to specify a time condition for the document it
639 requests. It is If-Modified-Since or If-Unmodified-Since. Curl allow you to
640 specify them with the -z/--time-cond flag.
642 For example, you can easily make a download that only gets performed if the
643 remote file is newer than a local copy. It would be made like:
645 curl -z local.html http://remote.server.com/remote.html
647 Or you can download a file only if the local file is newer than the remote
648 one. Do this by prepending the date string with a '-', as in:
650 curl -z -local.html http://remote.server.com/remote.html
652 You can specify a "free text" date as condition. Tell curl to only download
653 the file if it was updated since yesterday:
655 curl -z yesterday http://remote.server.com/remote.html
657 Curl will then accept a wide range of date formats. You always make the date
658 check the other way around by prepending it with a dash '-'.
664 curl dict://dict.org/m:curl
665 curl dict://dict.org/d:heisenbug:jargon
666 curl dict://dict.org/d:daniel:web1913
668 Aliases for 'm' are 'match' and 'find', and aliases for 'd' are 'define'
669 and 'lookup'. For example,
671 curl dict://dict.org/find:curl
673 Commands that break the URL description of the RFC (but not the DICT
676 curl dict://dict.org/show:db
677 curl dict://dict.org/show:strat
679 Authentication is still missing (but this is not required by the RFC)
683 If you have installed the OpenLDAP library, curl can take advantage of it
684 and offer ldap:// support.
686 LDAP is a complex thing and writing an LDAP query is not an easy task. I do
687 advice you to dig up the syntax description for that elsewhere. Two places
688 that might suit you are:
690 Netscape's "Netscape Directory SDK 3.0 for C Programmer's Guide Chapter 10:
691 Working with LDAP URLs":
692 http://developer.netscape.com/docs/manuals/dirsdk/csdk30/url.htm
694 RFC 2255, "The LDAP URL Format" http://www.rfc-editor.org/rfc/rfc2255.txt
696 To show you an example, this is now I can get all people from my local LDAP
697 server that has a certain sub-domain in their email address:
699 curl -B "ldap://ldap.frontec.se/o=frontec??sub?mail=*sth.frontec.se"
701 If I want the same info in HTML format, I can get it by not using the -B
702 (enforce ASCII) flag.
704 ENVIRONMENT VARIABLES
706 Curl reads and understands the following environment variables:
708 http_proxy, HTTPS_PROXY, FTP_PROXY, GOPHER_PROXY
710 They should be set for protocol-specific proxies. General proxy should be
715 A comma-separated list of host names that shouldn't go through any proxy is
716 set in (only an asterisk, '*' matches all hosts)
720 If a tail substring of the domain-path for a host matches one of these
721 strings, transactions with that node will not be proxied.
724 The usage of the -x/--proxy flag overrides the environment variables.
728 Unix introduced the .netrc concept a long time ago. It is a way for a user
729 to specify name and password for commonly visited ftp sites in a file so
730 that you don't have to type them in each time you visit those sites. You
731 realize this is a big security risk if someone else gets hold of your
732 passwords, so therefor most unix programs won't read this file unless it is
733 only readable by yourself (curl doesn't care though).
735 Curl supports .netrc files if told so (using the -n/--netrc and
736 --netrc-optional options). This is not restricted to only ftp,
737 but curl can use it for all protocols where authentication is used.
739 A very simple .netrc file could look something like:
741 machine curl.haxx.se login iamdaniel password mysecret
745 To better allow script programmers to get to know about the progress of
746 curl, the -w/--write-out option was introduced. Using this, you can specify
747 what information from the previous transfer you want to extract.
749 To display the amount of bytes downloaded together with some text and an
752 curl -w 'We downloaded %{size_download} bytes\n' www.download.com
754 KERBEROS4 FTP TRANSFER
756 Curl supports kerberos4 for FTP transfers. You need the kerberos package
757 installed and used at curl build time for it to be used.
759 First, get the krb-ticket the normal way, like with the kauth tool. Then use
760 curl in way similar to:
762 curl --krb4 private ftp://krb4site.com -u username:fakepwd
764 There's no use for a password on the -u switch, but a blank one will make
765 curl ask for one and you already entered the real password to kauth.
769 The curl telnet support is basic and very easy to use. Curl passes all data
770 passed to it on stdin to the remote server. Connect to a remote telnet
771 server using a command line similar to:
773 curl telnet://remote.server.com
775 And enter the data to pass to the server on stdin. The result will be sent
776 to stdout or to the file you specify with -o.
778 You might want the -N/--no-buffer option to switch off the buffered output
779 for slow connections or similar.
781 Pass options to the telnet protocol negotiation, by using the -t option. To
782 tell the server we use a vt100 terminal, try something like:
784 curl -tTTYPE=vt100 telnet://remote.server.com
786 Other interesting options for it -t include:
788 - XDISPLOC=<X display> Sets the X display location.
790 - NEW_ENV=<var,val> Sets an environment variable.
792 NOTE: the telnet protocol does not specify any way to login with a specified
793 user and password so curl can't do that automatically. To do that, you need
794 to track when the login prompt is received and send the username and
795 password accordingly.
797 PERSISTANT CONNECTIONS
799 Specifying multiple files on a single command line will make curl transfer
800 all of them, one after the other in the specified order.
802 libcurl will attempt to use persistant connections for the transfers so that
803 the second transfer to the same host can use the same connection that was
804 already initiated and was left open in the previous transfer. This greatly
805 decreases connection time for all but the first transfer and it makes a far
806 better use of the network.
808 Note that curl cannot use persistant connections for transfers that are used
809 in subsequence curl invokes. Try to stuff as many URLs as possible on the
810 same command line if they are using the same host, as that'll make the
811 transfers faster. If you use a http proxy for file transfers, practicly
812 all transfers will be persistant.
814 Persistant connections were introduced in curl 7.7.
818 For your convenience, we have several open mailing lists to discuss curl,
819 its development and things relevant to this. Get all info at
820 http://curl.haxx.se/mail/. The lists available are:
824 Users of the command line tool. How to use it, what doesn't work, new
825 features, related tools, questions, news, installations, compilations,
826 running, porting etc.
830 Developers using or developing libcurl. Bugs, extensions, improvements.
834 Low-traffic. Only announcements of new public versions.
838 Using the curl functions in PHP. Everything curl with a PHP angle. Or PHP
843 Receives notifications on all CVS commits done to the curl source module.
844 This can become quite a large amount of mails during intense development,
845 be aware. This is for us who liks email...
849 Receives notifications on all CVS commits done to the curl www module
850 (basicly the web site). This can become quite a large amount of mails
851 during intense changing, be aware. This is for us who liks email...
853 Please direct curl questions, feature requests and trouble reports to one of
854 these mailing lists instead of mailing any individual.