2 * libwebsockets - small server side websockets and web server implementation
4 * Copyright (C) 2010 - 2016 Andy Green <andy@warmcat.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation:
9 * version 2.1 of the License.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #include "lws_config.h"
23 #include "lws_config_private.h"
26 #if defined(LWS_WITH_CGI) && defined(LWS_HAVE_VFORK)
30 #ifdef LWS_HAVE_SYS_TYPES_H
31 #include <sys/types.h>
46 #ifdef LWS_HAVE_SYS_STAT_H
50 #if defined(WIN32) || defined(_WIN32)
55 #define _WIN32_WINNT WINVER
57 #define LWS_NO_DAEMONIZE
58 #define LWS_ERRNO WSAGetLastError()
59 #define LWS_EAGAIN WSAEWOULDBLOCK
60 #define LWS_EALREADY WSAEALREADY
61 #define LWS_EINPROGRESS WSAEINPROGRESS
62 #define LWS_EINTR WSAEINTR
63 #define LWS_EISCONN WSAEISCONN
64 #define LWS_EWOULDBLOCK WSAEWOULDBLOCK
65 #define LWS_POLLHUP (FD_CLOSE)
66 #define LWS_POLLIN (FD_READ | FD_ACCEPT)
67 #define LWS_POLLOUT (FD_WRITE)
68 #define MSG_NOSIGNAL 0
69 #define SHUT_RDWR SD_BOTH
70 #define SOL_TCP IPPROTO_TCP
71 #define SHUT_WR SD_SEND
73 #define compatible_close(fd) closesocket(fd)
74 #define lws_set_blocking_send(wsi) wsi->sock_send_blocking = 1
75 #define lws_socket_is_valid(x) (!!x)
76 #define LWS_SOCK_INVALID 0
81 #ifdef LWS_HAVE_IN6ADDR_H
87 #define __func__ __FUNCTION__
91 #define vsnprintf _vsnprintf
93 #ifdef LWS_HAVE__VSNPRINTF
94 #define vsnprintf _vsnprintf
98 #ifdef LWS_HAVE__SNPRINTF
99 #define snprintf _snprintf
102 #else /* not windows --> */
107 #include <sys/types.h>
108 #ifndef MBED_OPERATORS
114 #include <sys/socket.h>
115 #ifdef LWS_WITH_HTTP_PROXY
116 #include <hubbub/hubbub.h>
117 #include <hubbub/parser.h>
119 #ifdef LWS_BUILTIN_GETIFADDRS
120 #include <getifaddrs.h>
124 #if defined (__ANDROID__)
127 #include <sys/syslog.h>
130 #include <sys/socket.h>
132 #include <netinet/in.h>
133 #include <netinet/tcp.h>
134 #include <arpa/inet.h>
142 #include <sys/mman.h>
147 #ifdef LWS_HAVE_SYS_PRCTL_H
148 #include <sys/prctl.h>
152 #include <sys/time.h>
154 #define LWS_ERRNO errno
155 #define LWS_EAGAIN EAGAIN
156 #define LWS_EALREADY EALREADY
157 #define LWS_EINPROGRESS EINPROGRESS
158 #define LWS_EINTR EINTR
159 #define LWS_EISCONN EISCONN
160 #define LWS_EWOULDBLOCK EWOULDBLOCK
161 #define LWS_POLLHUP (POLLHUP|POLLERR)
162 #define LWS_POLLIN (POLLIN)
163 #define LWS_POLLOUT (POLLOUT)
164 static inline int compatible_close(int fd) { return close(fd); }
165 #define lws_set_blocking_send(wsi)
167 #ifdef MBED_OPERATORS
168 #define lws_socket_is_valid(x) ((x) != NULL)
169 #define LWS_SOCK_INVALID (NULL)
171 #define lws_socket_is_valid(x) (x >= 0)
172 #define LWS_SOCK_INVALID (-1)
176 #ifndef LWS_HAVE_BZERO
178 #define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
182 #ifndef LWS_HAVE_STRERROR
183 #define strerror(x) ""
186 #ifdef LWS_OPENSSL_SUPPORT
189 #ifdef USE_OLD_CYASSL
190 #include <cyassl/openssl/ssl.h>
191 #include <cyassl/error-ssl.h>
193 #include <wolfssl/openssl/ssl.h>
194 #include <wolfssl/error-ssl.h>
195 #endif /* not USE_OLD_CYASSL */
197 #if defined(LWS_USE_POLARSSL)
198 #include <polarssl/ssl.h>
199 #include <polarssl/error.h>
200 #include <polarssl/md5.h>
201 #include <polarssl/sha1.h>
202 #include <polarssl/ecdh.h>
204 #if defined(LWS_USE_MBEDTLS)
205 #include <mbedtls/ssl.h>
206 #include <mbedtls/error.h>
207 #include <mbedtls/md5.h>
208 #include <mbedtls/sha1.h>
209 #include <mbedtls/ecdh.h>
211 #include <openssl/ssl.h>
212 #include <openssl/evp.h>
213 #include <openssl/err.h>
214 #include <openssl/md5.h>
215 #include <openssl/sha.h>
216 #ifdef LWS_HAVE_OPENSSL_ECDH_H
217 #include <openssl/ecdh.h>
219 #endif /* not USE_MBEDTLS */
220 #endif /* not USE_POLARSSL */
221 #endif /* not USE_WOLFSSL */
224 #include "libwebsockets.h"
226 #if defined(MBED_OPERATORS)
227 #undef compatible_close
228 #define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
230 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
232 #ifndef LITTLE_ENDIAN
233 #define LITTLE_ENDIAN 1234
236 #define BYTE_ORDER LITTLE_ENDIAN
240 #if defined(WIN32) || defined(_WIN32)
243 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
245 #ifndef LITTLE_ENDIAN
246 #define LITTLE_ENDIAN 1234
249 #define BYTE_ORDER LITTLE_ENDIAN
252 typedef unsigned __int64 u_int64_t;
258 #define __P(protos) protos
260 #define __P(protos) ()
266 #include <sys/stat.h>
267 #include <sys/time.h>
269 #if defined(__APPLE__)
270 #include <machine/endian.h>
271 #elif defined(__FreeBSD__)
272 #include <sys/endian.h>
273 #elif defined(__linux__)
282 #include <gulliver.h>
283 #if defined(__LITTLEENDIAN__)
284 #define BYTE_ORDER __LITTLEENDIAN__
285 #define LITTLE_ENDIAN __LITTLEENDIAN__
286 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
288 #if defined(__BIGENDIAN__)
289 #define BYTE_ORDER __BIGENDIAN__
290 #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
291 #define BIG_ENDIAN __BIGENDIAN__
295 #if !defined(BYTE_ORDER)
296 # define BYTE_ORDER __BYTE_ORDER
298 #if !defined(LITTLE_ENDIAN)
299 # define LITTLE_ENDIAN __LITTLE_ENDIAN
301 #if !defined(BIG_ENDIAN)
302 # define BIG_ENDIAN __BIG_ENDIAN
308 * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
309 * but happily have something equivalent in the SO_NOSIGPIPE flag.
312 #define MSG_NOSIGNAL SO_NOSIGPIPE
316 #ifndef FD_HASHTABLE_MODULUS
317 #define FD_HASHTABLE_MODULUS 32
321 #ifndef LWS_DEF_HEADER_LEN
322 #define LWS_DEF_HEADER_LEN 1024
324 #ifndef LWS_DEF_HEADER_POOL
325 #define LWS_DEF_HEADER_POOL 16
327 #ifndef LWS_MAX_PROTOCOLS
328 #define LWS_MAX_PROTOCOLS 5
330 #ifndef LWS_MAX_EXTENSIONS_ACTIVE
331 #define LWS_MAX_EXTENSIONS_ACTIVE 2
333 #ifndef LWS_MAX_EXT_OFFERS
334 #define LWS_MAX_EXT_OFFERS 8
336 #ifndef SPEC_LATEST_SUPPORTED
337 #define SPEC_LATEST_SUPPORTED 13
339 #ifndef AWAITING_TIMEOUT
340 #define AWAITING_TIMEOUT 20
342 #ifndef CIPHERS_LIST_STRING
343 #define CIPHERS_LIST_STRING "DEFAULT"
345 #ifndef LWS_SOMAXCONN
346 #define LWS_SOMAXCONN SOMAXCONN
349 #define MAX_WEBSOCKET_04_KEY_LEN 128
350 #define LWS_MAX_SOCKET_IO_BUF 4096
352 #ifndef SYSTEM_RANDOM_FILEPATH
353 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
356 enum lws_websocket_opcodes_07 {
357 LWSWSOPC_CONTINUATION = 0,
358 LWSWSOPC_TEXT_FRAME = 1,
359 LWSWSOPC_BINARY_FRAME = 2,
361 LWSWSOPC_NOSPEC__MUX = 7,
363 /* control extensions 8+ */
371 enum lws_connection_states {
373 LWSS_HTTP_ISSUING_FILE,
378 LWSS_CLIENT_HTTP_ESTABLISHED,
379 LWSS_CLIENT_UNCONNECTED,
380 LWSS_RETURNED_CLOSE_ALREADY,
381 LWSS_AWAITING_CLOSE_ACK,
382 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
385 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
386 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
387 LWSS_HTTP2_ESTABLISHED,
398 enum http_connection_type {
399 HTTP_CONNECTION_CLOSE,
400 HTTP_CONNECTION_KEEP_ALIVE
403 enum lws_pending_protocol_send {
405 LWS_PPS_HTTP2_MY_SETTINGS,
406 LWS_PPS_HTTP2_ACK_SETTINGS,
410 enum lws_rx_parse_state {
417 LWS_RXPS_04_FRAME_HDR_1,
418 LWS_RXPS_04_FRAME_HDR_LEN,
419 LWS_RXPS_04_FRAME_HDR_LEN16_2,
420 LWS_RXPS_04_FRAME_HDR_LEN16_1,
421 LWS_RXPS_04_FRAME_HDR_LEN64_8,
422 LWS_RXPS_04_FRAME_HDR_LEN64_7,
423 LWS_RXPS_04_FRAME_HDR_LEN64_6,
424 LWS_RXPS_04_FRAME_HDR_LEN64_5,
425 LWS_RXPS_04_FRAME_HDR_LEN64_4,
426 LWS_RXPS_04_FRAME_HDR_LEN64_3,
427 LWS_RXPS_04_FRAME_HDR_LEN64_2,
428 LWS_RXPS_04_FRAME_HDR_LEN64_1,
430 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
431 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
432 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
433 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
435 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
439 enum connection_mode {
441 LWSCM_HTTP_CLIENT, /* we are client to someone else's server */
442 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
443 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
444 LWSCM_PRE_WS_SERVING_ACCEPT,
451 /* transient, ssl delay hiding */
452 LWSCM_SSL_ACK_PENDING,
455 /* transient modes */
456 LWSCM_WSCL_WAITING_CONNECT,
457 LWSCM_WSCL_WAITING_PROXY_REPLY,
458 LWSCM_WSCL_ISSUE_HANDSHAKE,
459 LWSCM_WSCL_ISSUE_HANDSHAKE2,
460 LWSCM_WSCL_WAITING_SSL,
461 LWSCM_WSCL_WAITING_SERVER_REPLY,
462 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
463 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
465 /* special internal types */
466 LWSCM_SERVER_LISTENER,
467 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
471 LWS_RXFLOW_ALLOW = (1 << 0),
472 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
475 /* this is not usable directly by user code any more, lws_close_reason() */
476 #define LWS_WRITE_CLOSE 4
478 struct lws_protocols;
481 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
483 struct lws_io_watcher {
488 uv_poll_t uv_watcher;
490 struct lws_context *context;
493 struct lws_signal_watcher {
495 ev_signal ev_watcher;
498 uv_signal_t uv_watcher;
500 struct lws_context *context;
505 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
506 struct lws_fd_hashtable {
513 * This is totally opaque to code using the library. It's exported as a
514 * forward-reference pointer-only declaration; the user can use the pointer with
515 * other APIs to get information out of it.
518 struct lws_fragments {
519 unsigned short offset;
521 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
525 * these are assigned from a pool held in the context.
526 * Both client and server mode uses them for http header analysis
529 struct allocated_headers {
530 struct lws *wsi; /* owner */
531 char *data; /* prepared by context init to point to dedicated storage */
533 * the randomly ordered fragments, indexed by frag_index and
534 * lws_fragments->nfrag for continuation.
536 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
539 * for each recognized token, frag_index says which frag[] his data
540 * starts in (0 means the token did not appear)
541 * the actual header data gets dumped as it comes in, into data[]
543 unsigned char frag_index[WSI_TOKEN_COUNT];
544 unsigned char rx[2048];
548 #ifndef LWS_NO_CLIENT
549 char initial_handshake_hash_base64[30];
553 unsigned char in_use;
558 * so we can have n connections being serviced simultaneously,
559 * these things need to be isolated per-thread.
562 struct lws_context_per_thread {
564 pthread_mutex_t lock;
566 struct lws_pollfd *fds;
567 struct lws *rx_draining_ext_list;
568 struct lws *tx_draining_ext_list;
569 struct lws *timeout_list;
570 struct lws_context *context;
572 struct lws_cgi *cgi_list;
574 void *http_header_data;
575 struct allocated_headers *ah_pool;
576 struct lws *ah_wait_list;
577 int ah_wait_list_length;
578 #ifdef LWS_OPENSSL_SUPPORT
579 struct lws *pending_read_list; /* linked list */
581 #ifndef LWS_NO_SERVER
582 struct lws *wsi_listening;
584 #if defined(LWS_USE_LIBEV)
585 struct ev_loop *io_loop_ev;
587 #if defined(LWS_USE_LIBUV)
588 uv_loop_t *io_loop_uv;
589 uv_signal_t signals[8];
590 uv_timer_t uv_timeout_watcher;
593 #if defined(LWS_USE_LIBEV)
594 struct lws_io_watcher w_accept;
596 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
597 struct lws_signal_watcher w_sigint;
598 unsigned char ev_loop_foreign:1;
601 unsigned long count_conns;
603 * usable by anything in the service code, but only if the scope
604 * does not last longer than the service action (since next service
605 * of any socket can likewise use it and overwrite)
607 unsigned char *serv_buf;
611 int dummy_pipe_fds[2];
613 unsigned int fds_count;
615 short ah_count_in_use;
619 struct lws_http_mount {
620 struct lws_http_mount *mount_next;
621 const char *mountpoint; /* mountpoint in http pathspace, eg, "/" */
622 const char *origin; /* path to be mounted, eg, "/var/www/warmcat.com" */
623 const char *def; /* default target, eg, "index.html" */
625 struct lws_protocol_vhost_options *cgienv;
629 unsigned char origin_protocol;
630 unsigned char mountpoint_len;
634 * virtual host -related context information
635 * vhostwide SSL context
640 * context -> vhost -> wsi
642 * incoming connection non-SSL vhost binding:
644 * listen socket -> wsi -> select vhost after first headers
646 * incoming connection SSL vhost binding:
648 * SSL SNI -> wsi -> bind after SSL negotiation
652 char http_proxy_address[128];
653 char proxy_basic_auth_token[128];
654 struct lws_context *context;
655 struct lws_vhost *vhost_next;
656 struct lws_http_mount *mount_list;
657 struct lws *lserv_wsi;
660 const struct lws_protocols *protocols;
661 void **protocol_vh_privs;
662 struct lws_protocol_vhost_options *pvo;
663 struct lws **same_vh_protocol_list;
664 #ifdef LWS_OPENSSL_SUPPORT
666 SSL_CTX *ssl_client_ctx;
668 #ifndef LWS_NO_EXTENSIONS
669 const struct lws_extension *extensions;
671 unsigned long rx, tx, conn, trans, ws_upgrades, http2_upgrades;
674 unsigned int http_proxy_port;
675 unsigned int options;
680 int keepalive_timeout;
681 #ifdef LWS_WITH_ACCESS_LOG
685 #ifdef LWS_OPENSSL_SUPPORT
687 int allow_non_ssl_on_ssl_port;
688 unsigned int user_supplied_ssl_ctx:1;
693 * the rest is managed per-context, that includes
695 * - processwide single fd -> wsi lookup
696 * - contextwide headers pool
700 time_t last_timeout_check_s;
702 struct lws_plat_file_ops fops;
703 struct lws_context_per_thread pt[LWS_MAX_SMP];
705 /* different implementation between unix and windows */
706 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
708 struct lws **lws_lookup; /* fd to wsi */
710 struct lws_vhost *vhost_list;
711 struct lws_plugin *plugin_list;
712 const struct lws_token_limits *token_limits;
714 const char *server_string;
716 #if defined(LWS_USE_LIBEV)
717 lws_ev_signal_cb_t * lws_ev_sigint_cb;
719 #if defined(LWS_USE_LIBUV)
720 uv_signal_cb lws_uv_sigint_cb;
722 char canonical_hostname[128];
724 unsigned long worst_latency;
725 char worst_latency_info[256];
729 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
732 int started_with_parent;
736 #ifdef LWS_OPENSSL_SUPPORT
737 #define lws_ssl_anybody_has_buffered_read(w) \
738 (w->vhost->use_ssl && \
739 w->context->pt[(int)w->tsi].pending_read_list)
740 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
741 (/*c->use_ssl && */ \
742 c->pt[(int)t].pending_read_list)
744 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
745 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
747 int count_wsi_allocated;
748 unsigned int options;
749 unsigned int fd_limit_per_thread;
750 unsigned int timeout_secs;
753 * set to the Thread ID that's doing the service loop just before entry
754 * to poll indicates service thread likely idling in poll()
755 * volatile because other threads may check it as part of processing
756 * for pollfd event change.
758 volatile int service_tid;
759 int service_tid_detected;
761 short max_http_header_data;
762 short max_http_header_pool;
764 short plugin_protocol_count;
765 short plugin_extension_count;
766 short server_string_len;
768 unsigned int being_destroyed:1;
769 unsigned int requested_kill:1;
770 unsigned int protocol_init_done:1;
773 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
774 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
777 lws_close_free_wsi_final(struct lws *wsi);
779 lws_libuv_closehandle(struct lws *wsi);
781 LWS_VISIBLE LWS_EXTERN int
782 lws_plat_plugins_init(struct lws_context * context, const char *d);
784 LWS_VISIBLE LWS_EXTERN int
785 lws_plat_plugins_destroy(struct lws_context * context);
788 LWS_EV_READ = (1 << 0),
789 LWS_EV_WRITE = (1 << 1),
790 LWS_EV_START = (1 << 2),
791 LWS_EV_STOP = (1 << 3),
793 LWS_EV_PREPARE_DELETION = (1 << 31),
796 #if defined(LWS_USE_LIBEV)
798 lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
800 lws_libev_io(struct lws *wsi, int flags);
802 lws_libev_init_fd_table(struct lws_context *context);
804 lws_libev_destroyloop(struct lws_context *context, int tsi);
806 lws_libev_run(const struct lws_context *context, int tsi);
807 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
808 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
810 #define lws_libev_accept(_a, _b) ((void) 0)
811 #define lws_libev_io(_a, _b) ((void) 0)
812 #define lws_libev_init_fd_table(_a) (0)
813 #define lws_libev_run(_a, _b) ((void) 0)
814 #define lws_libev_destroyloop(_a, _b) ((void) 0)
815 #define LWS_LIBEV_ENABLED(context) (0)
817 #define lws_feature_status_libev(_a) \
818 lwsl_notice("libev support not compiled in\n")
820 #define lws_feature_status_libev(_a)
824 #if defined(LWS_USE_LIBUV)
826 lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
828 lws_libuv_io(struct lws *wsi, int flags);
830 lws_libuv_init_fd_table(struct lws_context *context);
832 lws_libuv_run(const struct lws_context *context, int tsi);
834 lws_libuv_destroyloop(struct lws_context *context, int tsi);
835 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
836 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
838 #define lws_libuv_accept(_a, _b) ((void) 0)
839 #define lws_libuv_io(_a, _b) ((void) 0)
840 #define lws_libuv_init_fd_table(_a) (0)
841 #define lws_libuv_run(_a, _b) ((void) 0)
842 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
843 #define LWS_LIBUV_ENABLED(context) (0)
845 #define lws_feature_status_libuv(_a) \
846 lwsl_notice("libuv support not compiled in\n")
848 #define lws_feature_status_libuv(_a)
854 #define LWS_IPV6_ENABLED(context) \
855 (!lws_check_opt(context->options, LWS_SERVER_OPTION_DISABLE_IPV6))
857 #define LWS_IPV6_ENABLED(context) (0)
860 #ifdef LWS_USE_UNIX_SOCK
861 #define LWS_UNIX_SOCK_ENABLED(vhost) \
862 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
864 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
866 enum uri_path_states {
869 URIPS_SEEN_SLASH_DOT,
870 URIPS_SEEN_SLASH_DOT_DOT,
873 enum uri_esc_states {
876 URIES_SEEN_PERCENT_H1,
879 /* notice that these union members:
885 * all have a pointer to allocated_headers struct as their first member.
887 * It means for allocated_headers access, the three union paths can all be
888 * used interchangeably to access the same data
892 #ifndef LWS_NO_CLIENT
893 struct client_info_stash {
903 struct _lws_header_related {
904 /* MUST be first in struct */
905 struct allocated_headers *ah;
906 struct lws *ah_wait_list;
907 unsigned char *preamble_rx;
908 #ifndef LWS_NO_CLIENT
909 struct client_info_stash *stash;
911 unsigned int preamble_rx_len;
912 enum uri_path_states ups;
913 enum uri_esc_states ues;
915 unsigned short current_token_limit;
916 #ifndef LWS_NO_CLIENT
917 unsigned short c_port;
920 char post_literal_equal;
921 unsigned char parser_state; /* enum lws_token_indexes */
925 struct _lws_http_mode_related {
926 /* MUST be first in struct */
927 struct allocated_headers *ah; /* mirroring _lws_header_related */
928 struct lws *ah_wait_list;
929 unsigned char *preamble_rx;
930 #ifndef LWS_NO_CLIENT
931 struct client_info_stash *stash;
933 unsigned int preamble_rx_len;
934 struct lws *new_wsi_list;
935 unsigned long filepos;
936 unsigned long filelen;
939 enum http_version request_version;
940 enum http_connection_type connection_type;
941 unsigned int content_length;
942 unsigned int content_remain;
947 enum lws_http2_settings {
948 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
949 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
950 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
951 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
952 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
953 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
955 LWS_HTTP2_SETTINGS__COUNT /* always last */
958 enum lws_http2_wellknown_frame_types {
959 LWS_HTTP2_FRAME_TYPE_DATA,
960 LWS_HTTP2_FRAME_TYPE_HEADERS,
961 LWS_HTTP2_FRAME_TYPE_PRIORITY,
962 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
963 LWS_HTTP2_FRAME_TYPE_SETTINGS,
964 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
965 LWS_HTTP2_FRAME_TYPE_PING,
966 LWS_HTTP2_FRAME_TYPE_GOAWAY,
967 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
968 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
970 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
973 enum lws_http2_flags {
974 LWS_HTTP2_FLAG_END_STREAM = 1,
975 LWS_HTTP2_FLAG_END_HEADERS = 4,
976 LWS_HTTP2_FLAG_PADDED = 8,
977 LWS_HTTP2_FLAG_PRIORITY = 0x20,
979 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
982 #define LWS_HTTP2_STREAM_ID_MASTER 0
983 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
984 #define LWS_HTTP2_SETTINGS_LENGTH 6
986 struct http2_settings {
987 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
990 enum http2_hpack_state {
992 /* optional before first header block */
994 HKPS_OPT_E_DEPENDENCY,
1007 /* optional after last header block */
1008 HKPS_OPT_DISCARD_PADDING,
1011 enum http2_hpack_type {
1013 HPKT_INDEXED_HDR_6_VALUE_INCR,
1014 HPKT_LITERAL_HDR_VALUE_INCR,
1015 HPKT_INDEXED_HDR_4_VALUE,
1016 HPKT_LITERAL_HDR_VALUE,
1020 struct hpack_dt_entry {
1021 int token; /* additions that don't map to a token are ignored */
1026 struct hpack_dynamic_table {
1027 struct hpack_dt_entry *entries;
1035 struct _lws_http2_related {
1037 * having this first lets us also re-use all HTTP union code
1038 * and in turn, http_mode_related has allocated headers in right
1039 * place so we can use the header apis on the wsi directly still
1041 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1043 struct http2_settings my_settings;
1044 struct http2_settings peer_settings;
1046 struct lws *parent_wsi;
1047 struct lws *next_child_wsi;
1049 struct hpack_dynamic_table *hpack_dyn_table;
1050 struct lws *stream_wsi;
1051 unsigned char ping_payload[8];
1052 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1055 unsigned int length;
1056 unsigned int stream_id;
1057 enum http2_hpack_state hpack;
1058 enum http2_hpack_type hpack_type;
1059 unsigned int header_index;
1060 unsigned int hpack_len;
1061 unsigned int hpack_e_dep;
1063 unsigned int my_stream_id;
1064 unsigned int child_count;
1067 unsigned int END_STREAM:1;
1068 unsigned int END_HEADERS:1;
1069 unsigned int send_END_STREAM:1;
1070 unsigned int GOING_AWAY;
1071 unsigned int requested_POLLOUT:1;
1072 unsigned int waiting_tx_credit:1;
1073 unsigned int huff:1;
1074 unsigned int value:1;
1076 unsigned short round_robin_POLLOUT;
1077 unsigned short count_POLLOUT_children;
1078 unsigned short hpack_pos;
1081 unsigned char flags;
1082 unsigned char frame_state;
1083 unsigned char padding;
1084 unsigned char hpack_m;
1085 unsigned char initialized;
1088 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1092 struct _lws_websocket_related {
1093 /* cheapest way to deal with ah overlap with ws union transition */
1094 struct _lws_header_related hdr;
1096 unsigned int rx_ubuf_alloc;
1097 struct lws *rx_draining_ext_list;
1098 struct lws *tx_draining_ext_list;
1099 size_t rx_packet_length;
1100 unsigned int rx_ubuf_head;
1101 unsigned char mask[4];
1102 /* Also used for close content... control opcode == < 128 */
1103 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1105 unsigned char ping_payload_len;
1106 unsigned char mask_idx;
1107 unsigned char opcode;
1109 unsigned char rsv_first_msg;
1110 /* zero if no info, or length including 2-byte close code */
1111 unsigned char close_in_ping_buffer_len;
1113 unsigned char stashed_write_type;
1114 unsigned char tx_draining_stashed_wp;
1116 unsigned int final:1;
1117 unsigned int frame_is_binary:1;
1118 unsigned int all_zero_nonce:1;
1119 unsigned int this_frame_masked:1;
1120 unsigned int inside_frame:1; /* next write will be more of frame */
1121 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1122 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1123 unsigned int ping_pending_flag:1;
1124 unsigned int continuation_possible:1;
1125 unsigned int owed_a_fin:1;
1126 unsigned int check_utf8:1;
1127 unsigned int defeat_check_utf8:1;
1128 unsigned int pmce_compressed_message:1;
1129 unsigned int stashed_write_pending:1;
1130 unsigned int rx_draining_ext:1;
1131 unsigned int tx_draining_ext:1;
1136 /* wsi who is master of the cgi points to an lws_cgi */
1139 struct lws_cgi *cgi_list;
1140 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1141 struct lws *wsi; /* owner */
1142 unsigned long content_length;
1143 unsigned long content_length_seen;
1147 unsigned int being_closed:1;
1151 signed char char_to_hex(const char c);
1153 #ifndef LWS_NO_CLIENT
1154 enum lws_chunk_parser {
1165 #ifdef LWS_WITH_ACCESS_LOG
1166 struct lws_access_log {
1177 /* members with mutually exclusive lifetimes are unionized */
1180 struct _lws_http_mode_related http;
1181 #ifdef LWS_USE_HTTP2
1182 struct _lws_http2_related http2;
1184 struct _lws_header_related hdr;
1185 struct _lws_websocket_related ws;
1188 /* lifetime members */
1190 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1191 struct lws_io_watcher w_read;
1193 #if defined(LWS_USE_LIBEV)
1194 struct lws_io_watcher w_write;
1196 time_t pending_timeout_limit;
1200 struct lws_context *context;
1201 struct lws_vhost *vhost;
1202 struct lws *parent; /* points to parent, if any */
1203 struct lws *child_list; /* points to first child */
1204 struct lws *sibling_list; /* subsequent children at same level */
1206 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1208 const struct lws_protocols *protocol;
1209 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1210 struct lws *timeout_list;
1211 struct lws **timeout_list_prev;
1212 #ifdef LWS_WITH_ACCESS_LOG
1213 struct lws_access_log access_log;
1216 /* rxflow handling */
1217 unsigned char *rxflow_buffer;
1218 /* truncated send handling */
1219 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1220 #ifndef LWS_NO_EXTENSIONS
1221 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1222 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1224 #ifdef LWS_OPENSSL_SUPPORT
1226 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1229 struct lws *pending_read_list_prev, *pending_read_list_next;
1231 #ifdef LWS_WITH_HTTP_PROXY
1232 struct lws_rewrite *rw;
1235 unsigned long action_start;
1236 unsigned long latency_start;
1239 lws_sockfd_type sock;
1242 int position_in_fds_table;
1245 unsigned int trunc_alloc_len; /* size of malloc */
1246 unsigned int trunc_offset; /* where we are in terms of spilling */
1247 unsigned int trunc_len; /* how much is buffered */
1248 #ifndef LWS_NO_CLIENT
1249 int chunk_remaining;
1252 unsigned int hdr_parsing_completed:1;
1253 unsigned int http2_substream:1;
1254 unsigned int listener:1;
1255 unsigned int user_space_externally_allocated:1;
1256 unsigned int socket_is_permanently_unusable:1;
1257 unsigned int rxflow_change_to:2;
1258 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1259 unsigned int conn_stat_done:1;
1260 #ifdef LWS_WITH_ACCESS_LOG
1261 unsigned int access_log_pending:1;
1263 #ifndef LWS_NO_CLIENT
1264 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1265 unsigned int chunked:1; /* if the clientside connection is chunked */
1266 unsigned int client_rx_avail:1;
1268 #ifdef LWS_WITH_HTTP_PROXY
1269 unsigned int perform_rewrite:1;
1271 #ifndef LWS_NO_EXTENSIONS
1272 unsigned int extension_data_pending:1;
1274 #ifdef LWS_OPENSSL_SUPPORT
1275 unsigned int use_ssl:2;
1276 unsigned int upgraded:1;
1279 unsigned int sock_send_blocking:1;
1281 #ifdef LWS_OPENSSL_SUPPORT
1282 unsigned int redirect_to_https:1;
1286 #ifndef LWS_NO_EXTENSIONS
1287 unsigned char count_act_ext;
1289 unsigned char ietf_spec_revision;
1290 char mode; /* enum connection_mode */
1291 char state; /* enum lws_connection_states */
1292 char state_pre_close;
1293 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1294 char rx_frame_type; /* enum lws_write_protocol */
1295 char pending_timeout; /* enum pending_timeout */
1296 char pps; /* enum lws_pending_protocol_send */
1297 char tsi; /* thread service index we belong to */
1299 char cgi_channel; /* which of stdin/out/err */
1302 #ifndef LWS_NO_CLIENT
1303 char chunk_parser; /* enum lws_chunk_parser */
1307 LWS_EXTERN int log_level;
1310 lws_socket_bind(struct lws_vhost *vhost, int sockfd, int port,
1314 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1317 remove_wsi_socket_from_fds(struct lws *wsi);
1319 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1323 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1324 int ret, int completion) {
1326 (void)context; (void)wsi; (void)action; (void)ret;
1331 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1332 do { (void)context; (void)wsi; } while (0);
1335 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1337 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1338 int ret, int completion);
1342 lws_set_protocol_write_pending(struct lws *wsi,
1343 enum lws_pending_protocol_send pend);
1344 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1345 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1347 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1348 lws_parse(struct lws *wsi, unsigned char c);
1350 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1351 lws_http_action(struct lws *wsi);
1354 lws_b64_selftest(void);
1357 lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
1360 lws_service_flag_pending(struct lws_context *context, int tsi);
1362 #if defined(_WIN32) || defined(MBED_OPERATORS)
1363 LWS_EXTERN struct lws *
1364 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1367 insert_wsi(struct lws_context *context, struct lws *wsi);
1370 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1372 #define wsi_from_fd(A,B) A->lws_lookup[B]
1373 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1374 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1377 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1378 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1380 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1381 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1384 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1385 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1387 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1388 lws_client_connect_2(struct lws *wsi);
1390 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1391 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1392 const char *path, const char *host);
1394 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1395 lws_create_new_server_wsi(struct lws_vhost *vhost);
1397 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1398 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1401 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1403 LWS_EXTERN struct lws *
1404 lws_client_connect_via_info2(struct lws *wsi);
1410 #ifndef LWS_NO_EXTENSIONS
1412 lws_context_init_extensions(struct lws_context_creation_info *info,
1413 struct lws_context *context);
1415 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1416 void *v, size_t len);
1419 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1421 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1422 void *arg, int len);
1425 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1426 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1427 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1428 #define lws_issue_raw_ext_access lws_issue_raw
1429 #define lws_context_init_extensions(_a, _b)
1432 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1433 lws_client_interpret_server_handshake(struct lws *wsi);
1435 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1436 lws_rx_sm(struct lws *wsi, unsigned char c);
1439 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1441 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1442 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1445 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1447 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1448 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1449 enum lws_callback_reasons reason, void *user,
1450 void *in, size_t len);
1451 #ifdef LWS_USE_HTTP2
1452 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1453 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1455 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1456 unsigned char *buf, int len);
1457 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1459 lws_http2_parser(struct lws *wsi, unsigned char c);
1460 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1462 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1463 unsigned int sid, unsigned int len,
1464 unsigned char *buf);
1465 LWS_EXTERN struct lws *
1466 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1467 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1470 lws_add_http2_header_by_name(struct lws *wsi,
1471 const unsigned char *name,
1472 const unsigned char *value, int length,
1473 unsigned char **p, unsigned char *end);
1475 lws_add_http2_header_by_token(struct lws *wsi,
1476 enum lws_token_indexes token,
1477 const unsigned char *value, int length,
1478 unsigned char **p, unsigned char *end);
1480 lws_add_http2_header_status(struct lws *wsi,
1481 unsigned int code, unsigned char **p,
1482 unsigned char *end);
1484 void lws_http2_configure_if_upgraded(struct lws *wsi);
1486 #define lws_http2_configure_if_upgraded(x)
1490 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1492 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1493 lws_header_table_attach(struct lws *wsi, int autoservice);
1496 lws_header_table_detach(struct lws *wsi, int autoservice);
1499 lws_header_table_reset(struct lws *wsi, int autoservice);
1501 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1502 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1504 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1505 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1508 lws_ensure_user_space(struct lws *wsi);
1511 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1513 #ifndef LWS_NO_SERVER
1514 int lws_context_init_server(struct lws_context_creation_info *info,
1515 struct lws_vhost *vhost);
1516 LWS_EXTERN struct lws_vhost *
1517 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1519 handshake_0405(struct lws_context *context, struct lws *wsi);
1520 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1521 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1523 lws_server_get_canonical_hostname(struct lws_context *context,
1524 struct lws_context_creation_info *info);
1526 #define lws_context_init_server(_a, _b) (0)
1527 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1528 #define lws_server_get_canonical_hostname(_a, _b)
1531 #ifndef LWS_NO_DAEMONIZE
1532 LWS_EXTERN int get_daemonize_pid();
1534 #define get_daemonize_pid() (0)
1537 #if !defined(MBED_OPERATORS)
1538 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1539 interface_to_sa(struct lws_context *context, const char *ifname,
1540 struct sockaddr_in *addr, size_t addrlen);
1542 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1544 enum lws_ssl_capable_status {
1545 LWS_SSL_CAPABLE_ERROR = -1,
1546 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1549 #ifndef LWS_OPENSSL_SUPPORT
1550 #define LWS_SSL_ENABLED(context) (0)
1551 #define lws_context_init_server_ssl(_a, _b) (0)
1552 #define lws_ssl_destroy(_a)
1553 #define lws_context_init_http2_ssl(_a)
1554 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1555 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1556 #define lws_ssl_pending lws_ssl_pending_no_ssl
1557 #define lws_server_socket_service_ssl(_b, _c) (0)
1558 #define lws_ssl_close(_a) (0)
1559 #define lws_ssl_context_destroy(_a)
1560 #define lws_ssl_SSL_CTX_destroy(_a)
1561 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1562 #define lws_context_init_ssl_library(_a)
1564 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1565 LWS_EXTERN int openssl_websocket_private_data_index;
1566 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1567 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1568 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1569 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1570 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1571 lws_ssl_pending(struct lws *wsi);
1573 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1574 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1575 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1577 lws_ssl_close(struct lws *wsi);
1579 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1581 lws_ssl_context_destroy(struct lws_context *context);
1583 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1585 lws_ssl_client_bio_create(struct lws *wsi);
1587 lws_ssl_client_connect1(struct lws *wsi);
1589 lws_ssl_client_connect2(struct lws *wsi);
1590 #ifndef LWS_NO_SERVER
1592 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1593 struct lws_vhost *vhost);
1595 #define lws_context_init_server_ssl(_a, _b) (0)
1598 lws_ssl_destroy(struct lws_vhost *vhost);
1602 #ifdef LWS_USE_HTTP2
1604 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1606 #define lws_context_init_http2_ssl(_a)
1611 static LWS_INLINE void
1612 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1614 pthread_mutex_init(&pt->lock, NULL);
1616 static LWS_INLINE void
1617 lws_pt_lock(struct lws_context_per_thread *pt)
1619 pthread_mutex_lock(&pt->lock);
1622 static LWS_INLINE void
1623 lws_pt_unlock(struct lws_context_per_thread *pt)
1625 pthread_mutex_unlock(&pt->lock);
1628 #define lws_pt_mutex_init(_a) (void)(_a)
1629 #define lws_pt_lock(_a) (void)(_a)
1630 #define lws_pt_unlock(_a) (void)(_a)
1633 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1634 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1636 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1637 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1639 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1640 lws_ssl_pending_no_ssl(struct lws *wsi);
1642 #ifdef LWS_WITH_HTTP_PROXY
1643 struct lws_rewrite {
1644 hubbub_parser *parser;
1645 hubbub_parser_optparams params;
1646 const char *from, *to;
1647 int from_len, to_len;
1648 unsigned char *p, *end;
1651 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1656 return strncmp((const char *)s->ptr, p, len);
1658 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1659 LWS_EXTERN struct lws_rewrite *
1660 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1662 lws_rewrite_destroy(struct lws_rewrite *r);
1664 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1667 #ifndef LWS_NO_CLIENT
1668 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1670 struct lws_pollfd *pollfd);
1671 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1672 lws_http_transaction_completed_client(struct lws *wsi);
1673 #ifdef LWS_OPENSSL_SUPPORT
1675 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1676 struct lws_vhost *vhost);
1678 #define lws_context_init_client_ssl(_a, _b) (0)
1680 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1681 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1683 lws_decode_ssl_error(void);
1685 #define lws_context_init_client_ssl(_a, _b) (0)
1686 #define lws_handshake_client(_a, _b, _c) (0)
1690 _lws_rx_flow_control(struct lws *wsi);
1693 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1695 #ifndef LWS_NO_SERVER
1697 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1698 struct lws_pollfd *pollfd);
1700 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1702 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1704 #define lws_server_socket_service(_a, _b, _c) (0)
1705 #define lws_handshake_server(_a, _b, _c) (0)
1706 #define _lws_server_listen_accept_flow_control(a, b) (0)
1710 lws_get_addresses(struct lws_context *context, void *ads, char *name,
1711 int name_len, char *rip, int rip_len);
1713 LWS_EXTERN const char *
1714 lws_get_peer_simple(struct lws *wsi, char *name, int namelen);
1716 #ifdef LWS_WITH_ACCESS_LOG
1718 lws_access_log(struct lws *wsi);
1720 #define lws_access_log(_a)
1724 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1727 lws_protocol_init(struct lws_context *context);
1733 lws_realloc(void *ptr, size_t size);
1735 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1736 lws_zalloc(size_t size);
1738 #define lws_malloc(S) lws_realloc(NULL, S)
1739 #define lws_free(P) lws_realloc(P, 0)
1740 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1744 lws_plat_delete_socket_from_fds(struct lws_context *context,
1745 struct lws *wsi, int m);
1747 lws_plat_insert_socket_into_fds(struct lws_context *context,
1750 lws_plat_service_periodic(struct lws_context *context);
1753 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1754 struct lws_pollfd *pfd);
1756 lws_plat_context_early_init(void);
1758 lws_plat_context_early_destroy(struct lws_context *context);
1760 lws_plat_context_late_destroy(struct lws_context *context);
1762 lws_poll_listen_fd(struct lws_pollfd *fd);
1764 lws_plat_service(struct lws_context *context, int timeout_ms);
1765 LWS_EXTERN LWS_VISIBLE int
1766 lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1768 lws_plat_init(struct lws_context *context,
1769 struct lws_context_creation_info *info);
1771 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1772 LWS_EXTERN unsigned long long
1773 time_in_microseconds(void);
1774 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1775 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1777 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1778 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);