1 #ifndef HEADER_CURL_URLDATA_H
2 #define HEADER_CURL_URLDATA_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
25 /* This file is for lib internal stuff */
27 #include "curl_setup.h"
31 #define PORT_TELNET 23
33 #define PORT_HTTPS 443
34 #define PORT_DICT 2628
36 #define PORT_LDAPS 636
40 #define PORT_IMAPS 993
42 #define PORT_POP3S 995
46 #define PORT_SMTPS 465 /* sometimes called SSMTP */
48 #define PORT_RTMP 1935
49 #define PORT_RTMPT PORT_HTTP
50 #define PORT_RTMPS PORT_HTTPS
51 #define PORT_GOPHER 70
52 #define PORT_MQTT 1883
54 #define DICT_MATCH "/MATCH:"
55 #define DICT_MATCH2 "/M:"
56 #define DICT_MATCH3 "/FIND:"
57 #define DICT_DEFINE "/DEFINE:"
58 #define DICT_DEFINE2 "/D:"
59 #define DICT_DEFINE3 "/LOOKUP:"
61 #define CURL_DEFAULT_USER "anonymous"
62 #define CURL_DEFAULT_PASSWORD "ftp@example.com"
64 /* Convenience defines for checking protocols or their SSL based version. Each
65 protocol handler should only ever have a single CURLPROTO_ in its protocol
67 #define PROTO_FAMILY_HTTP (CURLPROTO_HTTP|CURLPROTO_HTTPS)
68 #define PROTO_FAMILY_FTP (CURLPROTO_FTP|CURLPROTO_FTPS)
69 #define PROTO_FAMILY_POP3 (CURLPROTO_POP3|CURLPROTO_POP3S)
70 #define PROTO_FAMILY_SMB (CURLPROTO_SMB|CURLPROTO_SMBS)
71 #define PROTO_FAMILY_SMTP (CURLPROTO_SMTP|CURLPROTO_SMTPS)
72 #define PROTO_FAMILY_SSH (CURLPROTO_SCP|CURLPROTO_SFTP)
74 #define DEFAULT_CONNCACHE_SIZE 5
76 /* length of longest IPv6 address string including the trailing null */
77 #define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
79 /* Default FTP/IMAP etc response timeout in milliseconds */
80 #define RESP_TIMEOUT (120*1000)
82 /* Max string input length is a precaution against abuse and to detect junk
83 input easier and better. */
84 #define CURL_MAX_INPUT_LENGTH 8000000
90 #ifdef HAVE_NETINET_IN_H
91 #include <netinet/in.h>
93 #ifdef HAVE_NETINET_IN6_H
94 #include <netinet/in6.h>
99 #include <curl/curl.h>
101 #include "http_chunks.h" /* for the structs and enum stuff */
107 /* return the count of bytes sent, or -1 on error */
108 typedef ssize_t (Curl_send)(struct Curl_easy *data, /* transfer */
109 int sockindex, /* socketindex */
110 const void *buf, /* data to write */
111 size_t len, /* max amount to write */
112 CURLcode *err); /* error to return */
114 /* return the count of bytes read, or -1 on error */
115 typedef ssize_t (Curl_recv)(struct Curl_easy *data, /* transfer */
116 int sockindex, /* socketindex */
117 char *buf, /* store data here */
118 size_t len, /* max amount to read */
119 CURLcode *err); /* error to return */
122 typedef CURLcode (*Curl_datastream)(struct Curl_easy *data,
123 struct connectdata *conn,
135 #include "vssh/ssh.h"
140 #include "wildcard.h"
141 #include "multihandle.h"
148 # elif defined HAVE_GSSAPI_GSSAPI_H
149 # include <gssapi/gssapi.h>
153 # ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
154 # include <gssapi/gssapi_generic.h>
158 #ifdef HAVE_LIBSSH2_H
160 #include <libssh2_sftp.h>
161 #endif /* HAVE_LIBSSH2_H */
163 #define READBUFFER_SIZE CURL_MAX_WRITE_SIZE
164 #define READBUFFER_MAX CURL_MAX_READ_SIZE
165 #define READBUFFER_MIN 1024
167 /* The default upload buffer size, should not be smaller than
168 CURL_MAX_WRITE_SIZE, as it needs to hold a full buffer as could be sent in
171 The size was 16KB for many years but was bumped to 64KB because it makes
172 libcurl able to do significantly faster uploads in some circumstances. Even
173 larger buffers can help further, but this is deemed a fair memory/speed
175 #define UPLOADBUFFER_DEFAULT 65536
176 #define UPLOADBUFFER_MAX (2*1024*1024)
177 #define UPLOADBUFFER_MIN CURL_MAX_WRITE_SIZE
179 #define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
180 #define GOOD_EASY_HANDLE(x) \
181 ((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))
183 /* the type we use for storing a single boolean bit */
186 #define BIT(x) bool x
188 typedef unsigned int bit;
189 #define BIT(x) bit x:1
193 /* Types needed for krb5-ftp connections */
201 enum protection_level {
202 PROT_NONE, /* first in list */
208 PROT_LAST /* last in list */
212 /* enum for the nonblocking SSL connection state machine */
216 ssl_connect_2_reading,
217 ssl_connect_2_writing,
224 ssl_connection_negotiating,
225 ssl_connection_complete
226 } ssl_connection_state;
228 /* SSL backend-specific data; declared differently by each SSL backend */
229 struct ssl_backend_data;
231 /* struct for data related to each SSL connection */
232 struct ssl_connect_data {
233 ssl_connection_state state;
234 ssl_connect_state connecting_state;
236 struct ssl_backend_data *backend;
238 /* Use ssl encrypted communications TRUE/FALSE. The library is not
239 necessarily using ssl at the moment but at least asked to or means to use
240 it. See 'state' for the exact current state of the connection. */
244 struct ssl_primary_config {
245 long version; /* what version the client wants to use */
246 long version_max; /* max supported version the client wants to use*/
247 char *CApath; /* certificate dir (doesn't work on windows) */
248 char *CAfile; /* certificate to verify peer against */
249 char *issuercert; /* optional issuer certificate filename */
251 char *random_file; /* path to file containing "random" data */
252 char *egdsocket; /* path to file containing the EGD daemon socket */
253 char *cipher_list; /* list of ciphers to use */
254 char *cipher_list13; /* list of TLS 1.3 cipher suites to use */
256 char *CRLfile; /* CRL to check certificate revocation */
257 struct curl_blob *cert_blob;
258 struct curl_blob *ca_info_blob;
259 struct curl_blob *issuercert_blob;
261 char *username; /* TLS username (for, e.g., SRP) */
262 char *password; /* TLS password (for, e.g., SRP) */
263 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */
265 char *curves; /* list of curves to use */
266 unsigned char ssl_options; /* the CURLOPT_SSL_OPTIONS bitmask */
267 BIT(verifypeer); /* set TRUE if this is desired */
268 BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */
269 BIT(verifystatus); /* set TRUE if certificate status must be checked */
270 BIT(sessionid); /* cache session IDs or not */
273 struct ssl_config_data {
274 struct ssl_primary_config primary;
275 long certverifyresult; /* result from the certificate verification */
276 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
277 void *fsslctxp; /* parameter for call back */
278 char *cert_type; /* format for certificate (default: PEM)*/
279 char *key; /* private key file name */
280 struct curl_blob *key_blob;
281 char *key_type; /* format for private key (default: PEM) */
282 char *key_passwd; /* plain text private key password */
283 BIT(certinfo); /* gather lots of certificate info */
285 BIT(enable_beast); /* allow this flaw for interoperability's sake*/
286 BIT(no_revoke); /* disable SSL certificate revocation checks */
287 BIT(no_partialchain); /* don't accept partial certificate chains */
288 BIT(revoke_best_effort); /* ignore SSL revocation offline/missing revocation
290 BIT(native_ca_store); /* use the native ca store of operating system */
291 BIT(auto_client_cert); /* automatically locate and use a client
292 certificate for authentication (Schannel) */
295 struct ssl_general_config {
296 size_t max_ssl_sessions; /* SSL session id cache size */
299 /* information stored about one single SSL session */
300 struct Curl_ssl_session {
301 char *name; /* host name for which this ID was used */
302 char *conn_to_host; /* host name for the connection (may be NULL) */
303 const char *scheme; /* protocol scheme used */
304 void *sessionid; /* as returned from the SSL layer */
305 size_t idsize; /* if known, otherwise 0 */
306 long age; /* just a number, the higher the more recent */
307 int remote_port; /* remote port */
308 int conn_to_port; /* remote port for the connection (may be -1) */
309 struct ssl_primary_config ssl_config; /* setup for this session */
312 #ifdef USE_WINDOWS_SSPI
313 #include "curl_sspi.h"
316 /* Struct used for Digest challenge-response authentication */
318 #if defined(USE_WINDOWS_SSPI)
320 size_t input_token_len;
321 CtxtHandle *http_context;
322 /* copy of user/passwd used to make the identity for http_context.
323 either may be NULL. */
334 int nc; /* nonce count */
335 BIT(stale); /* set true for re-negotiation */
356 /* Struct used for GSSAPI (Kerberos V5) authentication */
357 #if defined(USE_KERBEROS5)
358 struct kerberos5data {
359 #if defined(USE_WINDOWS_SSPI)
360 CredHandle *credentials;
363 SEC_WINNT_AUTH_IDENTITY identity;
364 SEC_WINNT_AUTH_IDENTITY *p_identity;
368 gss_ctx_id_t context;
374 /* Struct used for SCRAM-SHA-1 authentication */
379 Gsasl_session *client;
383 /* Struct used for NTLM challenge-response authentication */
384 #if defined(USE_NTLM)
386 #ifdef USE_WINDOWS_SSPI
387 /* The sslContext is used for the Schannel bindings. The
388 * api is available on the Windows 7 SDK and later.
390 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
391 CtxtHandle *sslContext;
393 CredHandle *credentials;
395 SEC_WINNT_AUTH_IDENTITY identity;
396 SEC_WINNT_AUTH_IDENTITY *p_identity;
400 size_t input_token_len;
404 unsigned char nonce[8];
405 unsigned int target_info_len;
406 void *target_info; /* TargetInfo received in the ntlm type-2 message */
408 #if defined(NTLM_WB_ENABLED)
409 /* used for communication with Samba's winbind daemon helper ntlm_auth */
410 curl_socket_t ntlm_auth_hlpr_socket;
411 pid_t ntlm_auth_hlpr_pid;
412 char *challenge; /* The received base64 encoded ntlm type-2 message */
413 char *response; /* The generated base64 ntlm type-1/type-3 message */
419 /* Struct used for Negotiate (SPNEGO) authentication */
421 struct negotiatedata {
424 gss_ctx_id_t context;
426 gss_buffer_desc output_token;
428 #ifdef USE_WINDOWS_SSPI
429 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
430 CtxtHandle *sslContext;
433 CredHandle *credentials;
435 SEC_WINNT_AUTH_IDENTITY identity;
436 SEC_WINNT_AUTH_IDENTITY *p_identity;
440 size_t output_token_length;
444 BIT(havenoauthpersist);
446 BIT(havemultiplerequests);
450 #ifdef CURL_DISABLE_PROXY
451 #define CONN_IS_PROXIED(x) 0
453 #define CONN_IS_PROXIED(x) x->bits.proxy
457 * Boolean values that concerns this connection.
460 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set
461 the first time on the first connect function call */
462 #ifndef CURL_DISABLE_PROXY
463 bool proxy_ssl_connected[2]; /* TRUE when SSL initialization for HTTPS proxy
465 BIT(httpproxy); /* if set, this transfer is done through a http proxy */
466 BIT(socksproxy); /* if set, this transfer is done through a socks proxy */
467 BIT(proxy_user_passwd); /* user+password for the proxy? */
468 BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy.
469 This is implicit when SSL-protocols are used through
470 proxies, but can also be enabled explicitly by
472 BIT(proxy_connect_closed); /* TRUE if a proxy disconnected the connection
473 in a CONNECT request with auth, so that
474 libcurl should reconnect and continue. */
475 BIT(proxy); /* if set, this transfer is done through a proxy - any type */
477 /* always modify bits.close with the connclose() and connkeep() macros! */
478 BIT(close); /* if set, we close the connection after this request */
479 BIT(reuse); /* if set, this is a re-used connection */
480 BIT(altused); /* this is an alt-svc "redirect" */
481 BIT(conn_to_host); /* if set, this connection has a "connect to host"
482 that overrides the host in the URL */
483 BIT(conn_to_port); /* if set, this connection has a "connect to port"
484 that overrides the port in the URL (remote port) */
485 BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6
487 BIT(ipv6); /* we communicate with a site using an IPv6 address */
488 BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is
489 supposed to be called, after ->curl_do() */
490 BIT(protoconnstart);/* the protocol layer has STARTED its operation after
491 the TCP layer connect */
492 BIT(retry); /* this connection is about to get closed and then
493 re-attempted at another connection. */
494 BIT(authneg); /* TRUE when the auth phase has started, which means
495 that we are creating a request with an auth header,
496 but it is not the final request in the auth
498 BIT(rewindaftersend);/* TRUE when the sending couldn't be stopped even
499 though it will be discarded. When the whole send
500 operation is done, we must call the data rewind
502 #ifndef CURL_DISABLE_FTP
503 BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
504 EPSV doesn't work we disable it for the forthcoming
506 BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
507 EPRT doesn't work we disable it for the forthcoming
509 BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */
510 BIT(ftp_use_control_ssl); /* Enabled SSL for the control connection */
512 #ifndef CURL_DISABLE_NETRC
513 BIT(netrc); /* name+password provided by netrc */
515 BIT(bound); /* set true if bind() has already been done on this socket/
517 BIT(multiplex); /* connection is multiplexed */
518 BIT(tcp_fastopen); /* use TCP Fast Open */
519 BIT(tls_enable_npn); /* TLS NPN extension? */
520 BIT(tls_enable_alpn); /* TLS ALPN extension? */
522 #ifndef CURL_DISABLE_DOH
525 #ifdef USE_UNIX_SOCKETS
526 BIT(abstract_unix_socket);
529 BIT(sock_accepted); /* TRUE if the SECONDARYSOCKET was created with
531 BIT(parallel_connect); /* set TRUE when a parallel connect attempt has
532 started (happy eyeballs) */
536 char *rawalloc; /* allocated "raw" version of the name */
537 char *encalloc; /* allocated IDN-encoded version of the name */
538 char *name; /* name to use internally, might be encoded, might be raw */
539 const char *dispname; /* name to display, as 'name' might be encoded */
543 * Flags on the keepon member of the Curl_transfer_keeper
547 #define KEEP_RECV (1<<0) /* there is or may be data to read */
548 #define KEEP_SEND (1<<1) /* there is or may be data to write */
549 #define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
550 might still be data to read */
551 #define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
552 might still be data to write */
553 #define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
554 #define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
556 #define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE)
557 #define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE)
559 #if defined(CURLRES_ASYNCH) || !defined(CURL_DISABLE_DOH)
560 #define USE_CURL_ASYNC
563 struct Curl_dns_entry *dns;
564 struct thread_data *tdata;
565 void *resolver; /* resolver state, if it is used in the URL state -
568 int status; /* if done is TRUE, this is the status from the callback */
569 BIT(done); /* set TRUE when the lookup is complete */
574 #define FIRSTSOCKET 0
575 #define SECONDARYSOCKET 1
578 EXP100_SEND_DATA, /* enough waiting, just send the body now */
579 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
580 EXP100_SENDING_REQUEST, /* still sending the request but will wait for
581 the 100 header once done with the request */
582 EXP100_FAILED /* used on 417 Expectation Failed */
586 UPGR101_INIT, /* default state */
587 UPGR101_REQUESTED, /* upgrade requested */
588 UPGR101_RECEIVED, /* response received */
589 UPGR101_WORKING /* talking upgraded protocol */
593 /* Explicit values for first two symbols so as to match hard-coded
594 * constants in existing code
596 DOH_PROBE_SLOT_IPADDR_V4 = 0, /* make 'V4' stand out for readability */
597 DOH_PROBE_SLOT_IPADDR_V6 = 1, /* 'V6' likewise */
599 /* Space here for (possibly build-specific) additional slot definitions */
602 /* #ifdef WANT_DOH_FOOBAR_TXT */
603 /* DOH_PROBE_SLOT_FOOBAR_TXT, */
606 /* AFTER all slot definitions, establish how many we have */
610 /* one of these for each DoH request */
614 unsigned char dohbuffer[512];
616 struct dynbuf serverdoh;
620 struct curl_slist *headers;
621 struct dnsprobe probe[DOH_PROBE_SLOTS];
622 unsigned int pending; /* still outstanding requests */
628 * Request specific data in the easy handle (Curl_easy). Previously,
629 * these members were on the connectdata struct but since a conn struct may
630 * now be shared between different Curl_easys, we store connection-specific
631 * data here. This struct only keeps stuff that's interesting for *this*
632 * request, as it will be cleared between multiple ones
634 struct SingleRequest {
635 curl_off_t size; /* -1 if unknown at this point */
636 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
637 -1 means unlimited */
638 curl_off_t bytecount; /* total number of bytes read */
639 curl_off_t writebytecount; /* number of bytes written */
641 curl_off_t headerbytecount; /* only count received headers */
642 curl_off_t deductheadercount; /* this amount of bytes doesn't count when we
643 check if anything has been transferred at
644 the end of a connection. We use this
645 counter to make only a 100 reply (without a
646 following second response code) result in a
647 CURLE_GOT_NOTHING error code */
649 curl_off_t pendingheader; /* this many bytes left to send is actually
650 header and not body */
651 struct curltime start; /* transfer started at this time */
652 struct curltime now; /* current time */
654 HEADER_NORMAL, /* no bad header at all */
655 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
657 HEADER_ALLBAD /* all was believed to be header */
658 } badheader; /* the header was deemed bad and will be
660 int headerline; /* counts header lines to better track the
662 char *str; /* within buf */
663 curl_off_t offset; /* possible resume offset read from the
664 Content-Range: header */
665 int httpcode; /* error code from the 'HTTP/1.? XXX' or
666 'RTSP/1.? XXX' line */
668 struct curltime start100; /* time stamp to wait for the 100 code from */
669 enum expect100 exp100; /* expect 100 continue state */
670 enum upgrade101 upgr101; /* 101 upgrade state */
672 /* Content unencoding stack. See sec 3.5, RFC2616. */
673 struct contenc_writer *writer_stack;
676 char *location; /* This points to an allocated version of the Location:
678 char *newurl; /* Set to the new URL to use when a redirect or a retry is
681 /* 'upload_present' is used to keep a byte counter of how much data there is
682 still left in the buffer, aimed for upload. */
683 ssize_t upload_present;
685 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
686 buffer, so the next read should read from where this pointer points to,
687 and the 'upload_present' contains the number of bytes available at this
689 char *upload_fromhere;
691 /* Allocated protocol-specific data. Each protocol handler makes sure this
692 points to data it needs. */
694 struct FILEPROTO *file;
698 struct ldapreqinfo *ldap;
702 struct smb_request *smb;
704 struct SSHPROTO *ssh;
705 struct TELNET *telnet;
707 #ifndef CURL_DISABLE_DOH
708 struct dohdata *doh; /* DoH specific data for this request */
710 BIT(header); /* incoming data has HTTP header */
711 BIT(content_range); /* set TRUE if Content-Range: was found */
712 BIT(upload_done); /* set to TRUE when doing chunked transfer-encoding
713 upload and we're uploading the last chunk */
714 BIT(ignorebody); /* we read a response-body but we ignore it! */
715 BIT(http_bodyless); /* HTTP response status code is between 100 and 199,
717 BIT(chunk); /* if set, this is a chunked transfer-encoding */
718 BIT(ignore_cl); /* ignore content-length */
719 BIT(upload_chunky); /* set TRUE if we are doing chunked transfer-encoding
721 BIT(getheader); /* TRUE if header parsing is wanted */
722 BIT(forbidchunk); /* used only to explicitly forbid chunk-upload for
723 specific upload buffers. See readmoredata() in http.c
728 * Specific protocol handler.
731 struct Curl_handler {
732 const char *scheme; /* URL scheme name. */
734 /* Complement to setup_connection_internals(). This is done before the
735 transfer "owns" the connection. */
736 CURLcode (*setup_connection)(struct Curl_easy *data,
737 struct connectdata *conn);
739 /* These two functions MUST be set to be protocol dependent */
740 CURLcode (*do_it)(struct Curl_easy *data, bool *done);
741 CURLcode (*done)(struct Curl_easy *, CURLcode, bool);
743 /* If the curl_do() function is better made in two halves, this
744 * curl_do_more() function will be called afterwards, if set. For example
745 * for doing the FTP stuff after the PASV/PORT command.
747 CURLcode (*do_more)(struct Curl_easy *, int *);
749 /* This function *MAY* be set to a protocol-dependent function that is run
750 * after the connect() and everything is done, as a step in the connection.
751 * The 'done' pointer points to a bool that should be set to TRUE if the
752 * function completes before return. If it doesn't complete, the caller
753 * should call the curl_connecting() function until it is.
755 CURLcode (*connect_it)(struct Curl_easy *data, bool *done);
758 CURLcode (*connecting)(struct Curl_easy *data, bool *done);
759 CURLcode (*doing)(struct Curl_easy *data, bool *done);
761 /* Called from the multi interface during the PROTOCONNECT phase, and it
762 should then return a proper fd set */
763 int (*proto_getsock)(struct Curl_easy *data,
764 struct connectdata *conn, curl_socket_t *socks);
766 /* Called from the multi interface during the DOING phase, and it should
767 then return a proper fd set */
768 int (*doing_getsock)(struct Curl_easy *data,
769 struct connectdata *conn, curl_socket_t *socks);
771 /* Called from the multi interface during the DO_MORE phase, and it should
772 then return a proper fd set */
773 int (*domore_getsock)(struct Curl_easy *data,
774 struct connectdata *conn, curl_socket_t *socks);
776 /* Called from the multi interface during the DO_DONE, PERFORM and
777 WAITPERFORM phases, and it should then return a proper fd set. Not setting
778 this will make libcurl use the generic default one. */
779 int (*perform_getsock)(struct Curl_easy *data,
780 struct connectdata *conn, curl_socket_t *socks);
782 /* This function *MAY* be set to a protocol-dependent function that is run
783 * by the curl_disconnect(), as a step in the disconnection. If the handler
784 * is called because the connection has been considered dead,
785 * dead_connection is set to TRUE. The connection is already disassociated
786 * from the transfer here.
788 CURLcode (*disconnect)(struct Curl_easy *, struct connectdata *,
789 bool dead_connection);
791 /* If used, this function gets called from transfer.c:readwrite_data() to
792 allow the protocol to do extra reads/writes */
793 CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn,
794 ssize_t *nread, bool *readmore);
796 /* This function can perform various checks on the connection. See
797 CONNCHECK_* for more information about the checks that can be performed,
798 and CONNRESULT_* for the results that can be returned. */
799 unsigned int (*connection_check)(struct Curl_easy *data,
800 struct connectdata *conn,
801 unsigned int checks_to_perform);
803 /* attach() attaches this transfer to this connection */
804 void (*attach)(struct Curl_easy *data, struct connectdata *conn);
806 int defport; /* Default port. */
807 unsigned int protocol; /* See CURLPROTO_* - this needs to be the single
808 specific protocol bit */
809 unsigned int family; /* single bit for protocol family; basically the
810 non-TLS name of the protocol this is */
811 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
815 #define PROTOPT_NONE 0 /* nothing extra */
816 #define PROTOPT_SSL (1<<0) /* uses SSL */
817 #define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
818 #define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
819 /* some protocols will have to call the underlying functions without regard to
820 what exact state the socket signals. IE even if the socket says "readable",
821 the send function might need to be called while uploading, or vice versa.
823 #define PROTOPT_DIRLOCK (1<<3)
824 #define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */
825 #define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
827 #define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle
828 url query strings (?foo=bar) ! */
829 #define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per
830 request instead of per connection */
831 #define PROTOPT_ALPN_NPN (1<<8) /* set ALPN and/or NPN for this */
832 #define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */
833 #define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
835 #define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
836 HTTP proxy as HTTP proxies may know
837 this protocol and act as a gateway */
838 #define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */
839 #define PROTOPT_USERPWDCTRL (1<<13) /* Allow "control bytes" (< 32 ascii) in
840 user name and password */
841 #define PROTOPT_NOTCPPROXY (1<<14) /* this protocol can't proxy over TCP */
843 #define CONNCHECK_NONE 0 /* No checks */
844 #define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */
845 #define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */
847 #define CONNRESULT_NONE 0 /* No extra information. */
848 #define CONNRESULT_DEAD (1<<0) /* The connection is dead. */
850 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND
851 struct postponed_data {
852 char *buffer; /* Temporal store for received data during
853 sending, must be freed */
854 size_t allocated_size; /* Size of temporal store */
855 size_t recv_size; /* Size of received data during sending */
856 size_t recv_processed; /* Size of processed part of postponed data */
858 curl_socket_t bindsock;/* Structure must be bound to specific socket,
859 used only for DEBUGASSERT */
860 #endif /* DEBUGBUILD */
862 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
865 struct hostname host;
867 curl_proxytype proxytype; /* what kind of proxy that is in use */
868 char *user; /* proxy user name string, allocated */
869 char *passwd; /* proxy password string, allocated */
873 struct http_connect_state;
875 /* for the (SOCKS) connect state machine */
878 CONNECT_SOCKS_INIT, /* 1 */
879 CONNECT_SOCKS_SEND, /* 2 waiting to send more first data */
880 CONNECT_SOCKS_READ_INIT, /* 3 set up read */
881 CONNECT_SOCKS_READ, /* 4 read server response */
882 CONNECT_GSSAPI_INIT, /* 5 */
883 CONNECT_AUTH_INIT, /* 6 setup outgoing auth buffer */
884 CONNECT_AUTH_SEND, /* 7 send auth */
885 CONNECT_AUTH_READ, /* 8 read auth response */
886 CONNECT_REQ_INIT, /* 9 init SOCKS "request" */
887 CONNECT_RESOLVING, /* 10 */
888 CONNECT_RESOLVED, /* 11 */
889 CONNECT_RESOLVE_REMOTE, /* 12 */
890 CONNECT_REQ_SEND, /* 13 */
891 CONNECT_REQ_SENDING, /* 14 */
892 CONNECT_REQ_READ, /* 15 */
893 CONNECT_REQ_READ_MORE, /* 16 */
894 CONNECT_DONE /* 17 connected fine to the remote or the SOCKS proxy */
897 #define SOCKS_STATE(x) (((x) >= CONNECT_SOCKS_INIT) && \
898 ((x) < CONNECT_DONE))
901 enum connect_t state;
902 ssize_t outstanding; /* send this many bytes more */
903 unsigned char *outp; /* send from this pointer */
907 * The connectdata struct contains all fields and variables that should be
908 * unique for an entire connection.
911 struct connstate cnnct;
912 struct Curl_llist_element bundle_node; /* conncache */
914 /* chunk is for HTTP chunked encoding, but is in the general connectdata
915 struct only because we can do just about any protocol through a HTTP proxy
916 and a HTTP proxy may in fact respond using chunked encoding */
917 struct Curl_chunker chunk;
919 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
920 void *closesocket_client;
922 /* This is used by the connection cache logic. If this returns TRUE, this
923 handle is still used by one or more easy handles and can only used by any
924 other easy handle without careful consideration (== only for
925 multiplexing) and it cannot be used by another multi handle! */
926 #define CONN_INUSE(c) ((c)->easyq.size)
928 /**** Fields set when inited and not modified again */
929 long connection_id; /* Contains a unique number to make it easier to
930 track the connections in the log output */
932 /* 'dns_entry' is the particular host we use. This points to an entry in the
933 DNS cache and it will not get pruned while locked. It gets unlocked in
934 multi_done(). This entry will be NULL if the connection is re-used as then
935 there is no name resolve done. */
936 struct Curl_dns_entry *dns_entry;
938 /* 'ip_addr' is the particular IP we connected to. It points to a struct
939 within the DNS cache, so this pointer is only valid as long as the DNS
940 cache entry remains locked. It gets unlocked in multi_done() */
941 struct Curl_addrinfo *ip_addr;
942 struct Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */
944 unsigned int scope_id; /* Scope id for IPv6 */
954 struct quicsocket hequic[2]; /* two, for happy eyeballs! */
955 struct quicsocket *quic;
958 struct hostname host;
959 char *hostname_resolve; /* host name to resolve to address, allocated */
960 char *secondaryhostname; /* secondary socket host name (ftp) */
961 struct hostname conn_to_host; /* the host to connect to. valid only if
962 bits.conn_to_host is set */
963 #ifndef CURL_DISABLE_PROXY
964 struct proxy_info socks_proxy;
965 struct proxy_info http_proxy;
967 int port; /* which port to use locally - to connect to */
968 int remote_port; /* the remote port, not the proxy port! */
969 int conn_to_port; /* the remote port to connect to. valid only if
970 bits.conn_to_port is set */
971 unsigned short secondary_port; /* secondary socket remote port to connect to
974 /* 'primary_ip' and 'primary_port' get filled with peer's numerical
975 ip address and port number whenever an outgoing connection is
976 *attempted* from the primary socket to a remote address. When more
977 than one address is tried for a connection these will hold data
978 for the last attempt. When the connection is actually established
979 these are updated with data which comes directly from the socket. */
981 char primary_ip[MAX_IPADR_LEN];
982 unsigned char ip_version; /* copied from the Curl_easy at creation time */
984 char *user; /* user name string, allocated */
985 char *passwd; /* password string, allocated */
986 char *options; /* options string, allocated */
987 char *sasl_authzid; /* authorization identity string, allocated */
988 char *oauth_bearer; /* OAUTH2 bearer, allocated */
989 unsigned char httpversion; /* the HTTP version*10 reported by the server */
990 struct curltime now; /* "current" time */
991 struct curltime created; /* creation time */
992 struct curltime lastused; /* when returned to the connection cache */
993 curl_socket_t sock[2]; /* two sockets, the second is used for the data
994 transfer when doing FTP */
995 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */
996 int tempfamily[2]; /* family used for the temp sockets */
1000 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND
1001 struct postponed_data postponed[2]; /* two buffers for two sockets */
1002 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
1003 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */
1004 #ifndef CURL_DISABLE_PROXY
1005 struct ssl_connect_data proxy_ssl[2]; /* this is for proxy ssl-stuff */
1008 void *ssl_extra; /* separately allocated backend-specific data */
1010 struct ssl_primary_config ssl_config;
1011 #ifndef CURL_DISABLE_PROXY
1012 struct ssl_primary_config proxy_ssl_config;
1014 struct ConnectBits bits; /* various state-flags for this connection */
1016 /* The field below gets set in Curl_connecthost */
1017 int num_addr; /* number of addresses to try to connect to */
1018 /* connecttime: when connect() is called on the current IP address. Used to
1019 be able to track when to move on to try next IP - but only when the multi
1020 interface is used. */
1021 struct curltime connecttime;
1023 /* The field below gets set in Curl_connecthost */
1024 /* how long time in milliseconds to spend on trying to connect to each IP
1025 address, per family */
1026 timediff_t timeoutms_per_addr[2];
1028 const struct Curl_handler *handler; /* Connection's protocol handler */
1029 const struct Curl_handler *given; /* The protocol first given */
1031 /* Protocols can use a custom keepalive mechanism to keep connections alive.
1032 This allows those protocols to track the last time the keepalive mechanism
1033 was used on this connection. */
1034 struct curltime keepalive;
1036 /**** curl_get() phase fields */
1038 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
1039 curl_socket_t writesockfd; /* socket to write to, it may very
1040 well be the same we read from.
1041 CURL_SOCKET_BAD disables */
1044 BIT(sec_complete); /* if Kerberos is enabled for this connection */
1045 enum protection_level command_prot;
1046 enum protection_level data_prot;
1047 enum protection_level request_data_prot;
1049 struct krb5buffer in_buffer;
1051 const struct Curl_sec_client_mech *mech;
1052 struct sockaddr_in local_addr;
1055 #if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */
1056 struct kerberos5data krb5; /* variables into the structure definition, */
1057 #endif /* however, some of them are ftp specific. */
1059 struct Curl_llist easyq; /* List of easy handles using this connection */
1060 curl_seek_callback seek_func; /* function that seeks the input */
1061 void *seek_client; /* pointer to pass to the seek() above */
1063 /*************** Request - specific items ************/
1064 #if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS)
1065 CtxtHandle *sslContext;
1069 struct gsasldata gsasl;
1072 #if defined(USE_NTLM)
1073 curlntlm http_ntlm_state;
1074 curlntlm proxy_ntlm_state;
1076 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
1077 because it authenticates connections, not
1079 struct ntlmdata proxyntlm; /* NTLM data for proxy */
1083 curlnegotiate http_negotiate_state;
1084 curlnegotiate proxy_negotiate_state;
1086 struct negotiatedata negotiate; /* state data for host Negotiate auth */
1087 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1090 /* for chunked-encoded trailer */
1091 struct dynbuf trailer;
1094 struct ftp_conn ftpc;
1095 struct http_conn httpc;
1096 struct ssh_conn sshc;
1097 struct tftp_state_data *tftpc;
1098 struct imap_conn imapc;
1099 struct pop3_conn pop3c;
1100 struct smtp_conn smtpc;
1101 struct rtsp_conn rtspc;
1102 struct smb_conn smbc;
1104 struct ldapconninfo *ldapc;
1105 struct mqtt_conn mqtt;
1108 struct http_connect_state *connect_state; /* for HTTP CONNECT */
1109 struct connectbundle *bundle; /* The bundle we are member of */
1110 #ifdef USE_UNIX_SOCKETS
1111 char *unix_domain_socket;
1114 /* if set, an alternative data transfer function */
1115 Curl_datastream datastream;
1117 /* When this connection is created, store the conditions for the local end
1118 bind. This is stored before the actual bind and before any connection is
1119 made and will serve the purpose of being used for comparison reasons so
1120 that subsequent bound-requested connections aren't accidentally re-using
1121 wrong connections. */
1124 int cselect_bits; /* bitmask of socket events */
1125 int waitfor; /* current READ/WRITE bits to wait for */
1126 int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */
1128 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1129 int socks5_gssapi_enctype;
1131 unsigned short localport;
1134 /* The end of connectdata. */
1137 * Struct to keep statistical and informational data.
1138 * All variables in this struct must be initialized/reset in Curl_initinfo().
1141 int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */
1142 int httpproxycode; /* response code from proxy when received separate */
1143 int httpversion; /* the http version number X.Y = X*10+Y */
1144 time_t filetime; /* If requested, this is might get set. Set to -1 if the
1145 time was unretrievable. */
1146 curl_off_t header_size; /* size of read header(s) in bytes */
1147 curl_off_t request_size; /* the amount of bytes sent in the request(s) */
1148 unsigned long proxyauthavail; /* what proxy auth types were announced */
1149 unsigned long httpauthavail; /* what host auth types were announced */
1150 long numconnects; /* how many new connection did libcurl created */
1151 char *contenttype; /* the content type of the object */
1152 char *wouldredirect; /* URL this would've been redirected to if asked to */
1153 curl_off_t retry_after; /* info from Retry-After: header */
1155 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
1156 and, 'conn_local_port' are copied over from the connectdata struct in
1157 order to allow curl_easy_getinfo() to return this information even when
1158 the session handle is no longer associated with a connection, and also
1159 allow curl_easy_reset() to clear this information from the session handle
1160 without disturbing information which is still alive, and that might be
1161 reused, in the connection cache. */
1163 char conn_primary_ip[MAX_IPADR_LEN];
1164 int conn_primary_port; /* this is the destination port to the connection,
1165 which might have been a proxy */
1166 int conn_remote_port; /* this is the "remote port", which is the port
1167 number of the used URL, independent of proxy or
1169 char conn_local_ip[MAX_IPADR_LEN];
1170 int conn_local_port;
1171 const char *conn_scheme;
1172 unsigned int conn_protocol;
1173 struct curl_certinfo certs; /* info about the certs, only populated in
1174 OpenSSL, GnuTLS, Schannel, NSS and GSKit
1175 builds. Asked for with CURLOPT_CERTINFO
1176 / CURLINFO_CERTINFO */
1177 CURLproxycode pxcode;
1178 BIT(timecond); /* set to TRUE if the time condition didn't match, which
1179 thus made the document NOT get fetched */
1184 time_t lastshow; /* time() of the last displayed progress meter or NULL to
1185 force redraw at next call */
1186 curl_off_t size_dl; /* total expected size */
1187 curl_off_t size_ul; /* total expected size */
1188 curl_off_t downloaded; /* transferred so far */
1189 curl_off_t uploaded; /* transferred so far */
1191 curl_off_t current_speed; /* uses the currently fastest transfer */
1193 int width; /* screen width at download start */
1194 int flags; /* see progress.h */
1196 timediff_t timespent;
1201 timediff_t t_nslookup;
1202 timediff_t t_connect;
1203 timediff_t t_appconnect;
1204 timediff_t t_pretransfer;
1205 timediff_t t_starttransfer;
1206 timediff_t t_redirect;
1208 struct curltime start;
1209 struct curltime t_startsingle;
1210 struct curltime t_startop;
1211 struct curltime t_acceptdata;
1214 /* upload speed limit */
1215 struct curltime ul_limit_start;
1216 curl_off_t ul_limit_size;
1217 /* download speed limit */
1218 struct curltime dl_limit_start;
1219 curl_off_t dl_limit_size;
1221 #define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
1223 curl_off_t speeder[ CURR_TIME ];
1224 struct curltime speeder_time[ CURR_TIME ];
1226 BIT(callback); /* set when progress callback is used */
1227 BIT(is_t_startransfer_set);
1231 RTSPREQ_NONE, /* first in list */
1239 RTSPREQ_GET_PARAMETER,
1240 RTSPREQ_SET_PARAMETER,
1243 RTSPREQ_LAST /* last in list */
1247 unsigned long want; /* Bitmask set to the authentication methods wanted by
1248 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1249 unsigned long picked;
1250 unsigned long avail; /* Bitmask for what the server reports to support for
1252 BIT(done); /* TRUE when the auth phase is done and ready to do the
1254 BIT(multipass); /* TRUE if this is not yet authenticated but within the
1255 auth multipass negotiation */
1256 BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
1257 should be RFC compliant */
1260 struct Curl_http2_dep {
1261 struct Curl_http2_dep *next;
1262 struct Curl_easy *data;
1266 * This struct is for holding data that was attempted to get sent to the user's
1267 * callback but is held due to pausing. One instance per type (BOTH, HEADER,
1272 int type; /* type of the 'tempwrite' buffer as a bitmask that is used with
1273 Curl_client_write() */
1280 EXPIRE_CONNECTTIMEOUT,
1281 EXPIRE_DNS_PER_NAME, /* family1 */
1282 EXPIRE_DNS_PER_NAME2, /* family2 */
1283 EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */
1284 EXPIRE_HAPPY_EYEBALLS,
1285 EXPIRE_MULTI_PENDING,
1291 EXPIRE_LAST /* not an actual timer, used as a marker only */
1297 TRAILERS_INITIALIZED,
1304 * One instance for each timeout an easy handle can set.
1307 struct Curl_llist_element list;
1308 struct curltime time;
1312 /* individual pieces of the URL */
1325 /* Points to the connection cache */
1326 struct conncache *conn_cache;
1327 /* buffers to store authentication data in, as parsed from input options */
1328 struct curltime keeps_speed; /* for the progress meter really */
1330 long lastconnect_id; /* The last connection, -1 if undefined */
1331 struct dynbuf headerb; /* buffer to store headers in */
1333 char *buffer; /* download buffer */
1334 char *ulbuf; /* allocated upload buffer or NULL */
1335 curl_off_t current_speed; /* the ProgressShow() function sets this,
1338 /* host name, port number and protocol of the first (not followed) request.
1339 if set, this should be the host name that we will sent authorization to,
1340 no else. Used to make Location: following not keep sending user+password.
1341 This is strdup()ed data. */
1343 int first_remote_port;
1344 unsigned int first_remote_protocol;
1346 int retrycount; /* number of retries on a new connection */
1347 struct Curl_ssl_session *session; /* array of 'max_ssl_sessions' size */
1348 long sessionage; /* number of the most recent session */
1349 struct tempbuf tempwrite[3]; /* BOTH, HEADER, BODY */
1350 unsigned int tempcount; /* number of entries in use in tempwrite, 0 - 3 */
1351 int os_errno; /* filled in with errno whenever an error occurs */
1352 char *scratch; /* huge buffer[set.buffer_size*2] for upload CRLF replacing */
1353 long followlocation; /* redirect counter */
1354 int requests; /* request counter: redirects + authentication retakes */
1356 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1357 void (*prev_signal)(int sig);
1359 struct digestdata digest; /* state data for host Digest auth */
1360 struct digestdata proxydigest; /* state data for proxy Digest auth */
1362 struct auth authhost; /* auth details for host */
1363 struct auth authproxy; /* auth details for proxy */
1364 #ifdef USE_CURL_ASYNC
1365 struct Curl_async async; /* asynchronous name resolver data */
1368 #if defined(USE_OPENSSL)
1369 /* void instead of ENGINE to avoid bleeding OpenSSL into this header */
1371 #endif /* USE_OPENSSL */
1372 struct curltime expiretime; /* set this with Curl_expire() only */
1373 struct Curl_tree timenode; /* for the splay stuff */
1374 struct Curl_llist timeoutlist; /* list of pending timeouts */
1375 struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
1377 /* a place to store the most recently set FTP entrypath */
1378 char *most_recent_ftp_entrypath;
1379 unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1380 to be used in the library's request(s) */
1381 unsigned char httpversion; /* the lowest HTTP version*10 reported by any
1382 server involved in this request */
1384 #if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__)
1385 /* do FTP line-end conversions on most platforms */
1386 #define CURL_DO_LINEEND_CONV
1387 /* for FTP downloads: track CRLF sequences that span blocks */
1388 BIT(prev_block_had_trailing_cr);
1389 /* for FTP downloads: how many CRLFs did we converted to LFs? */
1390 curl_off_t crlf_conversions;
1392 char *range; /* range, if used. See README for detailed specification on
1394 curl_off_t resume_from; /* continue [ftp] transfer from here */
1396 /* This RTSP state information survives requests and connections */
1397 long rtsp_next_client_CSeq; /* the session's next client CSeq */
1398 long rtsp_next_server_CSeq; /* the session's next server CSeq */
1399 long rtsp_CSeq_recv; /* most recent CSeq received */
1401 curl_off_t infilesize; /* size of file to upload, -1 means unknown.
1402 Copied from set.filesize at start of operation */
1404 size_t drain; /* Increased when this stream has data to read, even if its
1405 socket is not necessarily is readable. Decreased when
1408 curl_read_callback fread_func; /* read callback/function */
1409 void *in; /* CURLOPT_READDATA */
1411 struct Curl_easy *stream_depends_on;
1413 CURLU *uh; /* URL handle for the current parsed URL */
1414 struct urlpieces up;
1415 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
1416 char *url; /* work URL, copied from UserDefined */
1417 char *referer; /* referer string */
1418 struct curl_slist *cookielist; /* list of cookie files set by
1419 curl_easy_setopt(COOKIEFILE) calls */
1420 struct curl_slist *resolve; /* set to point to the set.resolve list when
1421 this should be dealt with in pretransfer */
1422 #ifndef CURL_DISABLE_HTTP
1423 size_t trailers_bytes_sent;
1424 struct dynbuf trailers_buf; /* a buffer containing the compiled trailing
1426 struct Curl_llist httphdrs; /* received headers */
1427 struct curl_header headerout; /* for external purposes */
1429 trailers_state trailers_state; /* whether we are sending trailers
1430 and what stage are we at */
1432 bool hconnect; /* set if a CONNECT request */
1433 CURLcode hresult; /* used to pass return codes back from hyper callbacks */
1436 /* Dynamically allocated strings, MUST be freed before this struct is
1438 struct dynamically_allocated_data {
1441 char *accept_encoding;
1447 char *rtsp_transport;
1448 char *te; /* TE: request header */
1450 /* transfer credentials */
1458 BIT(conncache_lock);
1460 /* when curl_easy_perform() is called, the multi handle is "owned" by
1461 the easy handle so curl_easy_cleanup() on such an easy handle will
1462 also close the multi handle! */
1463 BIT(multi_owned_by_easy);
1465 BIT(this_is_a_follow); /* this is a followed Location: request */
1466 BIT(refused_stream); /* this was refused, try again */
1467 BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in.
1468 This must be set to FALSE every time _easy_perform() is
1470 BIT(allow_port); /* Is set.use_port allowed to take effect or not. This
1471 is always set TRUE when curl_easy_perform() is called. */
1472 BIT(authproblem); /* TRUE if there's some problem authenticating */
1473 /* set after initial USER failure, to prevent an authentication loop */
1474 BIT(ftp_trying_alternative);
1475 BIT(wildcardmatch); /* enable wildcard matching */
1476 BIT(expect100header); /* TRUE if we added Expect: 100-continue */
1477 BIT(disableexpect); /* TRUE if Expect: is disabled due to a previous
1480 BIT(rangestringalloc); /* the range string is malloc()'ed */
1481 BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE
1482 when multi_done() is called, to prevent multi_done() to get
1483 invoked twice when the multi interface is used. */
1484 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1485 BIT(previouslypending); /* this transfer WAS in the multi->pending queue */
1487 BIT(prefer_ascii); /* ASCII rather than binary */
1488 BIT(list_only); /* list directory contents */
1489 BIT(url_alloc); /* URL string is malloc()'ed */
1490 BIT(referer_alloc); /* referer string is malloc()ed */
1491 BIT(wildcard_resolve); /* Set to true if any resolve change is a wildcard */
1495 * This 'UserDefined' struct must only contain data that is set once to go
1496 * for many (perhaps) independent connections. Values that are generated or
1497 * calculated internally for the "session handle" MUST be defined within the
1498 * 'struct UrlState' instead. The only exceptions MUST note the changes in
1499 * the 'DynamicStatic' struct.
1500 * Character pointer fields point to dynamic storage, unless otherwise stated.
1503 struct Curl_multi; /* declared and used only in multi.c */
1506 * This enumeration MUST not use conditional directives (#ifdefs), new
1507 * null terminated strings MUST be added to the enumeration immediately
1508 * before STRING_LASTZEROTERMINATED, binary fields immediately before
1509 * STRING_LAST. When doing so, ensure that the packages/OS400/chkstring.c
1510 * test is updated and applicable changes for EBCDIC to ASCII conversion
1511 * are catered for in curl_easy_setopt_ccsid()
1514 STRING_CERT, /* client certificate file name */
1515 STRING_CERT_PROXY, /* client certificate file name */
1516 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1517 STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/
1518 STRING_COOKIE, /* HTTP cookie string to send */
1519 STRING_COOKIEJAR, /* dump all cookies to this file */
1520 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1521 STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */
1522 STRING_DEVICE, /* local network interface/address to use */
1523 STRING_ENCODING, /* Accept-Encoding string */
1524 STRING_FTP_ACCOUNT, /* ftp account data */
1525 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1526 STRING_FTPPORT, /* port to send with the FTP PORT command */
1527 STRING_KEY, /* private key file name */
1528 STRING_KEY_PROXY, /* private key file name */
1529 STRING_KEY_PASSWD, /* plain text private key password */
1530 STRING_KEY_PASSWD_PROXY, /* plain text private key password */
1531 STRING_KEY_TYPE, /* format for private key (default: PEM) */
1532 STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */
1533 STRING_KRB_LEVEL, /* krb security level */
1534 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1536 STRING_PROXY, /* proxy to use */
1537 STRING_PRE_PROXY, /* pre socks proxy to use */
1538 STRING_SET_RANGE, /* range, if used */
1539 STRING_SET_REFERER, /* custom string for the HTTP referer field */
1540 STRING_SET_URL, /* what original URL to work on */
1541 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */
1542 STRING_SSL_CAPATH_PROXY, /* CA directory name (doesn't work on windows) */
1543 STRING_SSL_CAFILE, /* certificate file to verify peer against */
1544 STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */
1545 STRING_SSL_PINNEDPUBLICKEY, /* public key file to verify peer against */
1546 STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */
1547 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1548 STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */
1549 STRING_SSL_CIPHER13_LIST, /* list of TLS 1.3 ciphers to use */
1550 STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */
1551 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */
1552 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */
1553 STRING_USERAGENT, /* User-Agent string */
1554 STRING_SSL_CRLFILE, /* crl file to check certificate */
1555 STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */
1556 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1557 STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */
1558 STRING_SSL_ENGINE, /* name of ssl engine */
1559 STRING_USERNAME, /* <username>, if used */
1560 STRING_PASSWORD, /* <password>, if used */
1561 STRING_OPTIONS, /* <options>, if used */
1562 STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1563 STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1564 STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1566 STRING_RTSP_SESSION_ID, /* Session ID to use */
1567 STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1568 STRING_RTSP_TRANSPORT, /* Transport for this session */
1569 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1570 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1571 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1572 STRING_SSH_HOST_PUBLIC_KEY_SHA256, /* sha256 of host public key in base64 */
1573 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1574 STRING_PROXY_SERVICE_NAME, /* Proxy service name */
1575 STRING_SERVICE_NAME, /* Service name */
1578 STRING_TLSAUTH_USERNAME, /* TLS auth <username> */
1579 STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */
1580 STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */
1581 STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */
1582 STRING_BEARER, /* <bearer>, if used */
1583 STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */
1584 STRING_TARGET, /* CURLOPT_REQUEST_TARGET */
1585 STRING_DOH, /* CURLOPT_DOH_URL */
1586 STRING_ALTSVC, /* CURLOPT_ALTSVC */
1587 STRING_HSTS, /* CURLOPT_HSTS */
1588 STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */
1590 STRING_DNS_INTERFACE,
1591 STRING_DNS_LOCAL_IP4,
1592 STRING_DNS_LOCAL_IP6,
1593 STRING_SSL_EC_CURVES,
1595 /* -- end of null-terminated strings -- */
1597 STRING_LASTZEROTERMINATED,
1599 /* -- below this are pointers to binary data that cannot be strdup'ed. --- */
1601 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1603 STRING_AWS_SIGV4, /* Parameters for V4 signature */
1605 STRING_LAST /* not used, just an end-of-list marker */
1613 BLOB_SSL_ISSUERCERT,
1614 BLOB_SSL_ISSUERCERT_PROXY,
1620 /* callback that gets called when this easy handle is completed within a multi
1621 handle. Only used for internally created transfers, like for example
1623 typedef int (*multidone_func)(struct Curl_easy *easy, CURLcode result);
1625 struct UserDefined {
1626 FILE *err; /* the stderr user data goes here */
1627 void *debugdata; /* the data that will be passed to fdebug */
1628 char *errorbuffer; /* (Static) store failure messages in here */
1629 long proxyport; /* If non-zero, use this port number by default. If the
1630 proxy string features a ":[port]" that one will override
1632 void *out; /* CURLOPT_WRITEDATA */
1633 void *in_set; /* CURLOPT_READDATA */
1634 void *writeheader; /* write the header to this if non-NULL */
1635 void *rtp_out; /* write RTP to this if non-NULL */
1636 long use_port; /* which port to use (when not using default) */
1637 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1638 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1639 unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
1640 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1643 int keep_post; /* keep POSTs as POSTs after a 30x request; each
1644 bit represents a request, from 301 to 303 */
1645 void *postfields; /* if POST, set the fields' values here */
1646 curl_seek_callback seek_func; /* function that seeks the input */
1647 curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1648 of strlen(), and then the data *may* be binary
1649 (contain zero bytes) */
1650 unsigned short localport; /* local port number to bind to */
1651 int localportrange; /* number of additional port numbers to test in case the
1652 'localport' one can't be bind()ed */
1653 curl_write_callback fwrite_func; /* function that stores the output */
1654 curl_write_callback fwrite_header; /* function that stores headers */
1655 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1656 curl_read_callback fread_func_set; /* function that reads the input */
1657 curl_progress_callback fprogress; /* OLD and deprecated progress callback */
1658 curl_xferinfo_callback fxferinfo; /* progress callback */
1659 curl_debug_callback fdebug; /* function that write informational data */
1660 curl_ioctl_callback ioctl_func; /* function for I/O control */
1661 curl_sockopt_callback fsockopt; /* function for setting socket options */
1662 void *sockopt_client; /* pointer to pass to the socket options callback */
1663 curl_opensocket_callback fopensocket; /* function for checking/translating
1664 the address and opening the
1666 void *opensocket_client;
1667 curl_closesocket_callback fclosesocket; /* function for closing the
1669 void *closesocket_client;
1670 curl_prereq_callback fprereq; /* pre-initial request callback */
1671 void *prereq_userp; /* pre-initial request user data */
1673 void *seek_client; /* pointer to pass to the seek callback */
1674 #ifndef CURL_DISABLE_HSTS
1675 curl_hstsread_callback hsts_read;
1676 void *hsts_read_userp;
1677 curl_hstswrite_callback hsts_write;
1678 void *hsts_write_userp;
1680 void *progress_client; /* pointer to pass to the progress callback */
1681 void *ioctl_client; /* pointer to pass to the ioctl callback */
1682 long timeout; /* in milliseconds, 0 means no timeout */
1683 long connecttimeout; /* in milliseconds, 0 means no timeout */
1684 long accepttimeout; /* in milliseconds, 0 means no timeout */
1685 long happy_eyeballs_timeout; /* in milliseconds, 0 is a valid value */
1686 long server_response_timeout; /* in milliseconds, 0 means no timeout */
1687 long maxage_conn; /* in seconds, max idle time to allow a connection that
1689 long maxlifetime_conn; /* in seconds, max time since creation to allow a
1690 connection that is to be reused */
1691 long tftp_blksize; /* in bytes, 0 means use default */
1692 curl_off_t filesize; /* size of file to upload, -1 means unknown */
1693 long low_speed_limit; /* bytes/second */
1694 long low_speed_time; /* number of seconds */
1695 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1696 curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1698 curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1699 struct curl_slist *headers; /* linked list of extra headers */
1700 struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */
1701 struct curl_httppost *httppost; /* linked list of old POST data */
1702 curl_mimepart mimepost; /* MIME/POST data. */
1703 struct curl_slist *quote; /* after connection is established */
1704 struct curl_slist *postquote; /* after the transfer */
1705 struct curl_slist *prequote; /* before the transfer, after type */
1706 struct curl_slist *source_quote; /* 3rd party quote */
1707 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before
1708 the transfer on source host */
1709 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
1710 the transfer on source host */
1711 struct curl_slist *telnet_options; /* linked list of telnet options */
1712 struct curl_slist *resolve; /* list of names to add/remove from
1714 struct curl_slist *connect_to; /* list of host:port mappings to override
1715 the hostname and port to connect to */
1716 curl_TimeCond timecondition; /* kind of time/date comparison */
1717 curl_proxytype proxytype; /* what kind of proxy that is in use */
1718 time_t timevalue; /* what time to compare with */
1719 Curl_HttpReq method; /* what kind of HTTP request (if any) is this */
1720 unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1721 to be used in the library's request(s) */
1722 struct ssl_config_data ssl; /* user defined SSL stuff */
1723 #ifndef CURL_DISABLE_PROXY
1724 struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */
1726 struct ssl_general_config general_ssl; /* general user defined SSL stuff */
1727 long dns_cache_timeout; /* DNS cache timeout */
1728 long buffer_size; /* size of receive buffer to use */
1729 unsigned int upload_buffer_size; /* size of upload buffer to use,
1730 keep it >= CURL_MAX_WRITE_SIZE */
1731 void *private_data; /* application-private data */
1732 struct curl_slist *http200aliases; /* linked list of aliases for http200 */
1733 unsigned char ipver; /* the CURL_IPRESOLVE_* defines in the public header
1734 file 0 - whatever, 1 - v2, 2 - v6 */
1735 curl_off_t max_filesize; /* Maximum file size to download */
1736 #ifndef CURL_DISABLE_FTP
1737 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */
1738 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
1739 curl_ftpccc ftp_ccc; /* FTP CCC options */
1741 int ftp_create_missing_dirs; /* 1 - create directories that don't exist
1742 2 - the same but also allow MKD to fail once
1744 curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1745 void *ssh_keyfunc_userp; /* custom pointer to callback */
1746 #ifndef CURL_DISABLE_NETRC
1747 enum CURL_NETRC_OPTION
1748 use_netrc; /* defined in include/curl.h */
1750 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1751 IMAP or POP3 or others! */
1752 long new_file_perms; /* Permissions to use when creating remote files */
1753 long new_directory_perms; /* Permissions to use when creating remote dirs */
1754 long ssh_auth_types; /* allowed SSH auth types */
1755 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */
1756 struct curl_blob *blobs[BLOB_LAST];
1758 unsigned int scope_id; /* Scope id for IPv6 */
1760 long allowed_protocols;
1761 long redir_protocols;
1762 long mime_options; /* Mime option flags. */
1763 struct curl_slist *mail_rcpt; /* linked list of mail recipients */
1764 /* Common RTSP header options */
1765 Curl_RtspReq rtspreq; /* RTSP request type */
1766 long rtspversion; /* like httpversion, for RTSP */
1767 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1769 curl_chunk_end_callback chunk_end; /* called after part transferring
1771 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1772 to pattern (e.g. if WILDCARDMATCH is on) */
1775 long gssapi_delegation; /* GSS-API credential delegation, see the
1776 documentation of CURLOPT_GSSAPI_DELEGATION */
1778 long tcp_keepidle; /* seconds in idle before sending keepalive probe */
1779 long tcp_keepintvl; /* seconds between TCP keepalive probes */
1781 size_t maxconnects; /* Max idle connections in the connection cache */
1783 long expect_100_timeout; /* in milliseconds */
1784 struct Curl_easy *stream_depends_on;
1786 struct Curl_http2_dep *stream_dependents;
1788 curl_resolver_start_callback resolver_start; /* optional callback called
1789 before resolver start */
1790 void *resolver_start_client; /* pointer to pass to resolver start callback */
1791 long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1792 multidone_func fmultidone;
1793 struct Curl_easy *dohfor; /* this is a DoH request for that transfer */
1794 CURLU *uh; /* URL handle for the current parsed URL */
1795 void *trailer_data; /* pointer to pass to trailer data callback */
1796 curl_trailer_callback trailer_callback; /* trailing data callback */
1797 BIT(is_fread_set); /* has read callback been set to non-NULL? */
1798 BIT(is_fwrite_set); /* has write callback been set to non-NULL? */
1799 BIT(free_referer); /* set TRUE if 'referer' points to a string we
1801 BIT(tftp_no_options); /* do not send TFTP options requests */
1802 BIT(sep_headers); /* handle host and proxy headers separately */
1803 BIT(cookiesession); /* new cookie session? */
1804 BIT(crlf); /* convert crlf on ftp upload(?) */
1805 BIT(strip_path_slash); /* strip off initial slash from path */
1806 BIT(ssh_compression); /* enable SSH compression */
1808 /* Here follows boolean settings that define how to behave during
1809 this session. They are STATIC, set by libcurl users or at least initially
1810 and they don't change during operations. */
1811 BIT(get_filetime); /* get the time and get of the remote file */
1812 BIT(tunnel_thru_httpproxy); /* use CONNECT through a HTTP proxy */
1813 BIT(prefer_ascii); /* ASCII rather than binary */
1814 BIT(remote_append); /* append, not overwrite, on upload */
1815 BIT(list_only); /* list directory */
1816 #ifndef CURL_DISABLE_FTP
1817 BIT(ftp_use_port); /* use the FTP PORT command */
1818 BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */
1819 BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */
1820 BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */
1821 BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to
1824 BIT(hide_progress); /* don't use the progress meter */
1825 BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */
1826 BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */
1827 BIT(http_follow_location); /* follow HTTP redirects */
1828 BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */
1829 BIT(allow_auth_to_other_hosts);
1830 BIT(include_header); /* include received protocol headers in data output */
1831 BIT(http_set_referer); /* is a custom referer used */
1832 BIT(http_auto_referer); /* set "correct" referer when following
1834 BIT(opt_no_body); /* as set with CURLOPT_NOBODY */
1835 BIT(upload); /* upload request */
1836 BIT(verbose); /* output verbosity */
1837 BIT(krb); /* Kerberos connection requested */
1838 BIT(reuse_forbid); /* forbidden to be reused, close after use */
1839 BIT(reuse_fresh); /* do not re-use an existing connection */
1840 BIT(no_signal); /* do not use any signal/alarm handler */
1841 BIT(tcp_nodelay); /* whether to enable TCP_NODELAY or not */
1842 BIT(ignorecl); /* ignore content length */
1843 BIT(connect_only); /* make connection, let application use the socket */
1844 BIT(http_te_skip); /* pass the raw body data to the user, even when
1845 transfer-encoded (chunked, compressed) */
1846 BIT(http_ce_skip); /* pass the raw body data to the user, even when
1847 content-encoded (chunked, compressed) */
1848 BIT(proxy_transfer_mode); /* set transfer mode (;type=<a|i>) when doing
1849 FTP via an HTTP proxy */
1850 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1851 BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */
1853 BIT(sasl_ir); /* Enable/disable SASL initial response */
1854 BIT(wildcard_enabled); /* enable wildcard matching */
1855 BIT(tcp_keepalive); /* use TCP keepalives */
1856 BIT(tcp_fastopen); /* use TCP Fast Open */
1857 BIT(ssl_enable_npn); /* TLS NPN extension? */
1858 BIT(ssl_enable_alpn);/* TLS ALPN extension? */
1859 BIT(path_as_is); /* allow dotdots? */
1860 BIT(pipewait); /* wait for multiplex status before starting a new
1862 BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers
1863 from user callbacks */
1864 BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */
1865 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1866 BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1
1868 BIT(abstract_unix_socket);
1869 BIT(disallow_username_in_url); /* disallow username in url */
1870 #ifndef CURL_DISABLE_DOH
1871 BIT(doh); /* DNS-over-HTTPS enabled */
1872 BIT(doh_verifypeer); /* DoH certificate peer verification */
1873 BIT(doh_verifyhost); /* DoH certificate hostname verification */
1874 BIT(doh_verifystatus); /* DoH certificate status verification */
1876 BIT(http09_allowed); /* allow HTTP/0.9 responses */
1877 BIT(mail_rcpt_allowfails); /* allow RCPT TO command to fail for some
1882 struct Curl_hash *hostcache;
1884 HCACHE_NONE, /* not pointing to anything */
1885 HCACHE_MULTI, /* points to a shared one in the multi handle */
1886 HCACHE_SHARED /* points to a shared one in a shared object */
1891 * The 'connectdata' struct MUST have all the connection oriented stuff as we
1892 * may have several simultaneous connections and connection structs in memory.
1894 * The 'struct UserDefined' must only contain data that is set once to go for
1895 * many (perhaps) independent connections. Values that are generated or
1896 * calculated internally for the "session handle" must be defined within the
1897 * 'struct UrlState' instead.
1901 /* First a simple identifier to easier detect if a user mix up this easy
1902 handle with a multi handle. Set this to CURLEASY_MAGIC_NUMBER */
1905 /* first, two fields for the linked list of these */
1906 struct Curl_easy *next;
1907 struct Curl_easy *prev;
1909 struct connectdata *conn;
1910 struct Curl_llist_element connect_queue;
1911 struct Curl_llist_element conn_queue; /* list per connectdata */
1913 CURLMstate mstate; /* the handle's state */
1914 CURLcode result; /* previous result */
1916 struct Curl_message msg; /* A single posted message. */
1918 /* Array with the plain socket numbers this handle takes care of, in no
1919 particular order. Note that all sockets are added to the sockhash, where
1920 the state etc are also kept. This array is mostly used to detect when a
1921 socket is to be removed from the hash. See singlesocket(). */
1922 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
1923 unsigned char actions[MAX_SOCKSPEREASYHANDLE]; /* action for each socket in
1928 struct Curl_multi *multi; /* if non-NULL, points to the multi handle
1929 struct to which this "belongs" when used by
1930 the multi interface */
1931 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle
1932 struct to which this "belongs" when used
1933 by the easy interface */
1934 struct Curl_share *share; /* Share, handles global variable mutexing */
1936 struct PslCache *psl; /* The associated PSL cache. */
1938 struct SingleRequest req; /* Request-specific data */
1939 struct UserDefined set; /* values set by the libcurl user */
1940 struct CookieInfo *cookies; /* the cookies, read from files and servers.
1941 NOTE that the 'cookie' field in the
1942 UserDefined struct defines if the "engine"
1943 is to be used or not. */
1944 #ifndef CURL_DISABLE_HSTS
1947 #ifndef CURL_DISABLE_ALTSVC
1948 struct altsvcinfo *asi; /* the alt-svc cache */
1950 struct Progress progress; /* for all the progress meter data */
1951 struct UrlState state; /* struct for fields used for state info and
1952 other dynamic purposes */
1953 #ifndef CURL_DISABLE_FTP
1954 struct WildcardData wildcard; /* wildcard download state info */
1956 struct PureInfo info; /* stats, reports and info data */
1957 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only
1958 valid after a client has asked for it */
1960 struct hyptransfer hyp;
1964 #define LIBCURL_NAME "libcurl"
1966 #endif /* HEADER_CURL_URLDATA_H */