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
88 #define __func__ __FUNCTION__
91 #if (defined(_MSC_VER) && _MSC_VER < 1900) || defined(_WIN32_WCE)
92 #define vsnprintf _vsnprintf
94 #ifdef LWS_HAVE__VSNPRINTF
95 #define vsnprintf _vsnprintf
99 #ifdef LWS_HAVE__SNPRINTF
100 #define snprintf _snprintf
103 #else /* not windows --> */
108 #include <sys/types.h>
109 #ifndef MBED_OPERATORS
115 #include <sys/socket.h>
116 #ifdef LWS_WITH_HTTP_PROXY
117 #include <hubbub/hubbub.h>
118 #include <hubbub/parser.h>
120 #ifdef LWS_BUILTIN_GETIFADDRS
121 #include <getifaddrs.h>
125 #if defined (__ANDROID__)
127 #include <sys/resource.h>
129 #include <sys/syslog.h>
132 #include <sys/socket.h>
134 #include <netinet/in.h>
135 #include <netinet/tcp.h>
136 #include <arpa/inet.h>
144 #include <sys/mman.h>
149 #ifdef LWS_HAVE_SYS_PRCTL_H
150 #include <sys/prctl.h>
154 #include <sys/time.h>
156 #define LWS_ERRNO errno
157 #define LWS_EAGAIN EAGAIN
158 #define LWS_EALREADY EALREADY
159 #define LWS_EINPROGRESS EINPROGRESS
160 #define LWS_EINTR EINTR
161 #define LWS_EISCONN EISCONN
162 #define LWS_EWOULDBLOCK EWOULDBLOCK
163 #define LWS_POLLHUP (POLLHUP|POLLERR)
164 #define LWS_POLLIN (POLLIN)
165 #define LWS_POLLOUT (POLLOUT)
166 static inline int compatible_close(int fd) { return close(fd); }
167 #define lws_set_blocking_send(wsi)
169 #ifdef MBED_OPERATORS
170 #define lws_socket_is_valid(x) ((x) != NULL)
171 #define LWS_SOCK_INVALID (NULL)
173 #define lws_socket_is_valid(x) (x >= 0)
174 #define LWS_SOCK_INVALID (-1)
178 #ifndef LWS_HAVE_BZERO
180 #define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
184 #ifndef LWS_HAVE_STRERROR
185 #define strerror(x) ""
188 #ifdef LWS_OPENSSL_SUPPORT
191 #ifdef USE_OLD_CYASSL
192 #include <cyassl/openssl/ssl.h>
193 #include <cyassl/error-ssl.h>
195 #include <wolfssl/openssl/ssl.h>
196 #include <wolfssl/error-ssl.h>
197 #endif /* not USE_OLD_CYASSL */
199 #if defined(LWS_USE_POLARSSL)
200 #include <polarssl/ssl.h>
201 #include <polarssl/error.h>
202 #include <polarssl/md5.h>
203 #include <polarssl/sha1.h>
204 #include <polarssl/ecdh.h>
205 #define SSL_ERROR_WANT_READ POLARSSL_ERR_NET_WANT_READ
206 #define SSL_ERROR_WANT_WRITE POLARSSL_ERR_NET_WANT_WRITE
207 #define OPENSSL_VERSION_NUMBER 0x10002000L
209 #if defined(LWS_USE_MBEDTLS)
210 #include <mbedtls/ssl.h>
211 #include <mbedtls/error.h>
212 #include <mbedtls/md5.h>
213 #include <mbedtls/sha1.h>
214 #include <mbedtls/ecdh.h>
216 #include <openssl/ssl.h>
217 #include <openssl/evp.h>
218 #include <openssl/err.h>
219 #include <openssl/md5.h>
220 #include <openssl/sha.h>
221 #ifdef LWS_HAVE_OPENSSL_ECDH_H
222 #include <openssl/ecdh.h>
224 #endif /* not USE_MBEDTLS */
225 #endif /* not USE_POLARSSL */
226 #endif /* not USE_WOLFSSL */
229 #include "libwebsockets.h"
231 #if defined(MBED_OPERATORS)
232 #undef compatible_close
233 #define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
235 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
237 #ifndef LITTLE_ENDIAN
238 #define LITTLE_ENDIAN 1234
241 #define BYTE_ORDER LITTLE_ENDIAN
245 #if defined(WIN32) || defined(_WIN32)
248 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
250 #ifndef LITTLE_ENDIAN
251 #define LITTLE_ENDIAN 1234
254 #define BYTE_ORDER LITTLE_ENDIAN
257 typedef unsigned __int64 u_int64_t;
263 #define __P(protos) protos
265 #define __P(protos) ()
271 #include <sys/stat.h>
272 #include <sys/time.h>
274 #if defined(__APPLE__)
275 #include <machine/endian.h>
276 #elif defined(__FreeBSD__)
277 #include <sys/endian.h>
278 #elif defined(__linux__)
287 #include <gulliver.h>
288 #if defined(__LITTLEENDIAN__)
289 #define BYTE_ORDER __LITTLEENDIAN__
290 #define LITTLE_ENDIAN __LITTLEENDIAN__
291 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
293 #if defined(__BIGENDIAN__)
294 #define BYTE_ORDER __BIGENDIAN__
295 #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
296 #define BIG_ENDIAN __BIGENDIAN__
300 #if !defined(BYTE_ORDER)
301 # define BYTE_ORDER __BYTE_ORDER
303 #if !defined(LITTLE_ENDIAN)
304 # define LITTLE_ENDIAN __LITTLE_ENDIAN
306 #if !defined(BIG_ENDIAN)
307 # define BIG_ENDIAN __BIG_ENDIAN
313 * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
314 * but happily have something equivalent in the SO_NOSIGPIPE flag.
317 #define MSG_NOSIGNAL SO_NOSIGPIPE
321 #ifndef FD_HASHTABLE_MODULUS
322 #define FD_HASHTABLE_MODULUS 32
326 #ifndef LWS_DEF_HEADER_LEN
327 #define LWS_DEF_HEADER_LEN 1024
329 #ifndef LWS_DEF_HEADER_POOL
330 #define LWS_DEF_HEADER_POOL 16
332 #ifndef LWS_MAX_PROTOCOLS
333 #define LWS_MAX_PROTOCOLS 5
335 #ifndef LWS_MAX_EXTENSIONS_ACTIVE
336 #define LWS_MAX_EXTENSIONS_ACTIVE 2
338 #ifndef LWS_MAX_EXT_OFFERS
339 #define LWS_MAX_EXT_OFFERS 8
341 #ifndef SPEC_LATEST_SUPPORTED
342 #define SPEC_LATEST_SUPPORTED 13
344 #ifndef AWAITING_TIMEOUT
345 #define AWAITING_TIMEOUT 20
347 #ifndef CIPHERS_LIST_STRING
348 #define CIPHERS_LIST_STRING "DEFAULT"
350 #ifndef LWS_SOMAXCONN
351 #define LWS_SOMAXCONN SOMAXCONN
354 #define MAX_WEBSOCKET_04_KEY_LEN 128
355 #define LWS_MAX_SOCKET_IO_BUF 4096
357 #ifndef SYSTEM_RANDOM_FILEPATH
358 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
361 enum lws_websocket_opcodes_07 {
362 LWSWSOPC_CONTINUATION = 0,
363 LWSWSOPC_TEXT_FRAME = 1,
364 LWSWSOPC_BINARY_FRAME = 2,
366 LWSWSOPC_NOSPEC__MUX = 7,
368 /* control extensions 8+ */
376 enum lws_connection_states {
378 LWSS_HTTP_ISSUING_FILE,
383 LWSS_CLIENT_HTTP_ESTABLISHED,
384 LWSS_CLIENT_UNCONNECTED,
385 LWSS_RETURNED_CLOSE_ALREADY,
386 LWSS_AWAITING_CLOSE_ACK,
387 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
390 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
391 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
392 LWSS_HTTP2_ESTABLISHED,
403 enum http_connection_type {
404 HTTP_CONNECTION_CLOSE,
405 HTTP_CONNECTION_KEEP_ALIVE
408 enum lws_pending_protocol_send {
410 LWS_PPS_HTTP2_MY_SETTINGS,
411 LWS_PPS_HTTP2_ACK_SETTINGS,
415 enum lws_rx_parse_state {
422 LWS_RXPS_04_FRAME_HDR_1,
423 LWS_RXPS_04_FRAME_HDR_LEN,
424 LWS_RXPS_04_FRAME_HDR_LEN16_2,
425 LWS_RXPS_04_FRAME_HDR_LEN16_1,
426 LWS_RXPS_04_FRAME_HDR_LEN64_8,
427 LWS_RXPS_04_FRAME_HDR_LEN64_7,
428 LWS_RXPS_04_FRAME_HDR_LEN64_6,
429 LWS_RXPS_04_FRAME_HDR_LEN64_5,
430 LWS_RXPS_04_FRAME_HDR_LEN64_4,
431 LWS_RXPS_04_FRAME_HDR_LEN64_3,
432 LWS_RXPS_04_FRAME_HDR_LEN64_2,
433 LWS_RXPS_04_FRAME_HDR_LEN64_1,
435 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
436 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
437 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
438 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
440 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
444 enum connection_mode {
446 LWSCM_HTTP_CLIENT, /* we are client to someone else's server */
447 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
448 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
449 LWSCM_PRE_WS_SERVING_ACCEPT,
456 /* transient, ssl delay hiding */
457 LWSCM_SSL_ACK_PENDING,
460 /* transient modes */
461 LWSCM_WSCL_WAITING_CONNECT,
462 LWSCM_WSCL_WAITING_PROXY_REPLY,
463 LWSCM_WSCL_ISSUE_HANDSHAKE,
464 LWSCM_WSCL_ISSUE_HANDSHAKE2,
465 LWSCM_WSCL_WAITING_SSL,
466 LWSCM_WSCL_WAITING_SERVER_REPLY,
467 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
468 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
470 /* special internal types */
471 LWSCM_SERVER_LISTENER,
472 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
476 LWS_RXFLOW_ALLOW = (1 << 0),
477 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
480 /* this is not usable directly by user code any more, lws_close_reason() */
481 #define LWS_WRITE_CLOSE 4
483 struct lws_protocols;
486 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
488 struct lws_io_watcher {
493 uv_poll_t uv_watcher;
495 struct lws_context *context;
498 struct lws_signal_watcher {
500 ev_signal ev_watcher;
503 uv_signal_t uv_watcher;
505 struct lws_context *context;
510 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
511 struct lws_fd_hashtable {
518 * This is totally opaque to code using the library. It's exported as a
519 * forward-reference pointer-only declaration; the user can use the pointer with
520 * other APIs to get information out of it.
523 struct lws_fragments {
524 unsigned short offset;
526 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
530 * these are assigned from a pool held in the context.
531 * Both client and server mode uses them for http header analysis
534 struct allocated_headers {
535 struct lws *wsi; /* owner */
536 char *data; /* prepared by context init to point to dedicated storage */
538 * the randomly ordered fragments, indexed by frag_index and
539 * lws_fragments->nfrag for continuation.
541 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
544 * for each recognized token, frag_index says which frag[] his data
545 * starts in (0 means the token did not appear)
546 * the actual header data gets dumped as it comes in, into data[]
548 unsigned char frag_index[WSI_TOKEN_COUNT];
549 unsigned char rx[2048];
553 #ifndef LWS_NO_CLIENT
554 char initial_handshake_hash_base64[30];
558 unsigned char in_use;
563 * so we can have n connections being serviced simultaneously,
564 * these things need to be isolated per-thread.
567 struct lws_context_per_thread {
569 pthread_mutex_t lock;
571 struct lws_pollfd *fds;
572 struct lws *rx_draining_ext_list;
573 struct lws *tx_draining_ext_list;
574 struct lws *timeout_list;
575 struct lws_context *context;
577 struct lws_cgi *cgi_list;
579 void *http_header_data;
580 struct allocated_headers *ah_pool;
581 struct lws *ah_wait_list;
582 int ah_wait_list_length;
583 #ifdef LWS_OPENSSL_SUPPORT
584 struct lws *pending_read_list; /* linked list */
586 #ifndef LWS_NO_SERVER
587 struct lws *wsi_listening;
589 #if defined(LWS_USE_LIBEV)
590 struct ev_loop *io_loop_ev;
592 #if defined(LWS_USE_LIBUV)
593 uv_loop_t *io_loop_uv;
594 uv_signal_t signals[8];
595 uv_timer_t uv_timeout_watcher;
598 #if defined(LWS_USE_LIBEV)
599 struct lws_io_watcher w_accept;
601 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
602 struct lws_signal_watcher w_sigint;
603 unsigned char ev_loop_foreign:1;
606 unsigned long count_conns;
608 * usable by anything in the service code, but only if the scope
609 * does not last longer than the service action (since next service
610 * of any socket can likewise use it and overwrite)
612 unsigned char *serv_buf;
616 int dummy_pipe_fds[2];
618 unsigned int fds_count;
620 short ah_count_in_use;
625 * virtual host -related context information
626 * vhostwide SSL context
631 * context -> vhost -> wsi
633 * incoming connection non-SSL vhost binding:
635 * listen socket -> wsi -> select vhost after first headers
637 * incoming connection SSL vhost binding:
639 * SSL SNI -> wsi -> bind after SSL negotiation
643 char http_proxy_address[128];
644 char proxy_basic_auth_token[128];
645 struct lws_context *context;
646 struct lws_vhost *vhost_next;
647 const struct lws_http_mount *mount_list;
648 struct lws *lserv_wsi;
651 const struct lws_protocols *protocols;
652 void **protocol_vh_privs;
653 const struct lws_protocol_vhost_options *pvo;
654 struct lws **same_vh_protocol_list;
655 #ifdef LWS_OPENSSL_SUPPORT
657 SSL_CTX *ssl_client_ctx;
659 #ifndef LWS_NO_EXTENSIONS
660 const struct lws_extension *extensions;
662 unsigned long long rx, tx;
663 unsigned long conn, trans, ws_upgrades, http2_upgrades;
666 unsigned int http_proxy_port;
667 unsigned int options;
672 int keepalive_timeout;
673 #ifdef LWS_WITH_ACCESS_LOG
677 #ifdef LWS_OPENSSL_SUPPORT
679 int allow_non_ssl_on_ssl_port;
680 unsigned int user_supplied_ssl_ctx:1;
682 unsigned char default_protocol_index;
686 * the rest is managed per-context, that includes
688 * - processwide single fd -> wsi lookup
689 * - contextwide headers pool
693 time_t last_timeout_check_s;
695 struct lws_plat_file_ops fops;
696 struct lws_context_per_thread pt[LWS_MAX_SMP];
698 /* different implementation between unix and windows */
699 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
701 struct lws **lws_lookup; /* fd to wsi */
703 struct lws_vhost *vhost_list;
704 struct lws_plugin *plugin_list;
705 const struct lws_token_limits *token_limits;
707 const char *server_string;
709 #if defined(LWS_USE_LIBEV)
710 lws_ev_signal_cb_t * lws_ev_sigint_cb;
712 #if defined(LWS_USE_LIBUV)
713 uv_signal_cb lws_uv_sigint_cb;
715 char canonical_hostname[128];
717 unsigned long worst_latency;
718 char worst_latency_info[256];
722 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
725 int started_with_parent;
729 #ifdef LWS_OPENSSL_SUPPORT
730 #define lws_ssl_anybody_has_buffered_read(w) \
731 (w->vhost->use_ssl && \
732 w->context->pt[(int)w->tsi].pending_read_list)
733 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
734 (/*c->use_ssl && */ \
735 c->pt[(int)t].pending_read_list)
737 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
738 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
740 int count_wsi_allocated;
741 int count_cgi_spawned;
742 unsigned int options;
743 unsigned int fd_limit_per_thread;
744 unsigned int timeout_secs;
747 * set to the Thread ID that's doing the service loop just before entry
748 * to poll indicates service thread likely idling in poll()
749 * volatile because other threads may check it as part of processing
750 * for pollfd event change.
752 volatile int service_tid;
753 int service_tid_detected;
755 short max_http_header_data;
756 short max_http_header_pool;
758 short plugin_protocol_count;
759 short plugin_extension_count;
760 short server_string_len;
762 unsigned int being_destroyed:1;
763 unsigned int requested_kill:1;
764 unsigned int protocol_init_done:1;
767 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
768 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
771 lws_close_free_wsi_final(struct lws *wsi);
773 lws_libuv_closehandle(struct lws *wsi);
775 LWS_VISIBLE LWS_EXTERN int
776 lws_plat_plugins_init(struct lws_context * context, const char * const *d);
778 LWS_VISIBLE LWS_EXTERN int
779 lws_plat_plugins_destroy(struct lws_context * context);
782 LWS_EV_READ = (1 << 0),
783 LWS_EV_WRITE = (1 << 1),
784 LWS_EV_START = (1 << 2),
785 LWS_EV_STOP = (1 << 3),
787 LWS_EV_PREPARE_DELETION = (1 << 31),
790 #if defined(LWS_USE_LIBEV)
792 lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
794 lws_libev_io(struct lws *wsi, int flags);
796 lws_libev_init_fd_table(struct lws_context *context);
798 lws_libev_destroyloop(struct lws_context *context, int tsi);
800 lws_libev_run(const struct lws_context *context, int tsi);
801 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
802 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
804 #define lws_libev_accept(_a, _b) ((void) 0)
805 #define lws_libev_io(_a, _b) ((void) 0)
806 #define lws_libev_init_fd_table(_a) (0)
807 #define lws_libev_run(_a, _b) ((void) 0)
808 #define lws_libev_destroyloop(_a, _b) ((void) 0)
809 #define LWS_LIBEV_ENABLED(context) (0)
811 #define lws_feature_status_libev(_a) \
812 lwsl_notice("libev support not compiled in\n")
814 #define lws_feature_status_libev(_a)
818 #if defined(LWS_USE_LIBUV)
820 lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
822 lws_libuv_io(struct lws *wsi, int flags);
824 lws_libuv_init_fd_table(struct lws_context *context);
826 lws_libuv_run(const struct lws_context *context, int tsi);
828 lws_libuv_destroyloop(struct lws_context *context, int tsi);
829 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
830 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
832 #define lws_libuv_accept(_a, _b) ((void) 0)
833 #define lws_libuv_io(_a, _b) ((void) 0)
834 #define lws_libuv_init_fd_table(_a) (0)
835 #define lws_libuv_run(_a, _b) ((void) 0)
836 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
837 #define LWS_LIBUV_ENABLED(context) (0)
839 #define lws_feature_status_libuv(_a) \
840 lwsl_notice("libuv support not compiled in\n")
842 #define lws_feature_status_libuv(_a)
848 #define LWS_IPV6_ENABLED(context) \
849 (!lws_check_opt(context->options, LWS_SERVER_OPTION_DISABLE_IPV6))
851 #define LWS_IPV6_ENABLED(context) (0)
854 #ifdef LWS_USE_UNIX_SOCK
855 #define LWS_UNIX_SOCK_ENABLED(vhost) \
856 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
858 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
860 enum uri_path_states {
863 URIPS_SEEN_SLASH_DOT,
864 URIPS_SEEN_SLASH_DOT_DOT,
867 enum uri_esc_states {
870 URIES_SEEN_PERCENT_H1,
873 /* notice that these union members:
879 * all have a pointer to allocated_headers struct as their first member.
881 * It means for allocated_headers access, the three union paths can all be
882 * used interchangeably to access the same data
886 #ifndef LWS_NO_CLIENT
887 struct client_info_stash {
897 struct _lws_header_related {
898 /* MUST be first in struct */
899 struct allocated_headers *ah;
900 struct lws *ah_wait_list;
901 unsigned char *preamble_rx;
902 #ifndef LWS_NO_CLIENT
903 struct client_info_stash *stash;
905 unsigned int preamble_rx_len;
906 enum uri_path_states ups;
907 enum uri_esc_states ues;
909 unsigned short current_token_limit;
910 #ifndef LWS_NO_CLIENT
911 unsigned short c_port;
914 char post_literal_equal;
915 unsigned char parser_state; /* enum lws_token_indexes */
919 struct _lws_http_mode_related {
920 /* MUST be first in struct */
921 struct allocated_headers *ah; /* mirroring _lws_header_related */
922 struct lws *ah_wait_list;
923 unsigned char *preamble_rx;
924 #ifndef LWS_NO_CLIENT
925 struct client_info_stash *stash;
927 unsigned int preamble_rx_len;
928 struct lws *new_wsi_list;
929 unsigned long filepos;
930 unsigned long filelen;
933 enum http_version request_version;
934 enum http_connection_type connection_type;
935 unsigned int content_length;
936 unsigned int content_remain;
941 enum lws_http2_settings {
942 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
943 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
944 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
945 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
946 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
947 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
949 LWS_HTTP2_SETTINGS__COUNT /* always last */
952 enum lws_http2_wellknown_frame_types {
953 LWS_HTTP2_FRAME_TYPE_DATA,
954 LWS_HTTP2_FRAME_TYPE_HEADERS,
955 LWS_HTTP2_FRAME_TYPE_PRIORITY,
956 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
957 LWS_HTTP2_FRAME_TYPE_SETTINGS,
958 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
959 LWS_HTTP2_FRAME_TYPE_PING,
960 LWS_HTTP2_FRAME_TYPE_GOAWAY,
961 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
962 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
964 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
967 enum lws_http2_flags {
968 LWS_HTTP2_FLAG_END_STREAM = 1,
969 LWS_HTTP2_FLAG_END_HEADERS = 4,
970 LWS_HTTP2_FLAG_PADDED = 8,
971 LWS_HTTP2_FLAG_PRIORITY = 0x20,
973 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
976 #define LWS_HTTP2_STREAM_ID_MASTER 0
977 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
978 #define LWS_HTTP2_SETTINGS_LENGTH 6
980 struct http2_settings {
981 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
984 enum http2_hpack_state {
986 /* optional before first header block */
988 HKPS_OPT_E_DEPENDENCY,
1001 /* optional after last header block */
1002 HKPS_OPT_DISCARD_PADDING,
1005 enum http2_hpack_type {
1007 HPKT_INDEXED_HDR_6_VALUE_INCR,
1008 HPKT_LITERAL_HDR_VALUE_INCR,
1009 HPKT_INDEXED_HDR_4_VALUE,
1010 HPKT_LITERAL_HDR_VALUE,
1014 struct hpack_dt_entry {
1015 int token; /* additions that don't map to a token are ignored */
1020 struct hpack_dynamic_table {
1021 struct hpack_dt_entry *entries;
1029 struct _lws_http2_related {
1031 * having this first lets us also re-use all HTTP union code
1032 * and in turn, http_mode_related has allocated headers in right
1033 * place so we can use the header apis on the wsi directly still
1035 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1037 struct http2_settings my_settings;
1038 struct http2_settings peer_settings;
1040 struct lws *parent_wsi;
1041 struct lws *next_child_wsi;
1043 struct hpack_dynamic_table *hpack_dyn_table;
1044 struct lws *stream_wsi;
1045 unsigned char ping_payload[8];
1046 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1049 unsigned int length;
1050 unsigned int stream_id;
1051 enum http2_hpack_state hpack;
1052 enum http2_hpack_type hpack_type;
1053 unsigned int header_index;
1054 unsigned int hpack_len;
1055 unsigned int hpack_e_dep;
1057 unsigned int my_stream_id;
1058 unsigned int child_count;
1061 unsigned int END_STREAM:1;
1062 unsigned int END_HEADERS:1;
1063 unsigned int send_END_STREAM:1;
1064 unsigned int GOING_AWAY;
1065 unsigned int requested_POLLOUT:1;
1066 unsigned int waiting_tx_credit:1;
1067 unsigned int huff:1;
1068 unsigned int value:1;
1070 unsigned short round_robin_POLLOUT;
1071 unsigned short count_POLLOUT_children;
1072 unsigned short hpack_pos;
1075 unsigned char flags;
1076 unsigned char frame_state;
1077 unsigned char padding;
1078 unsigned char hpack_m;
1079 unsigned char initialized;
1082 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1086 struct _lws_websocket_related {
1087 /* cheapest way to deal with ah overlap with ws union transition */
1088 struct _lws_header_related hdr;
1090 unsigned int rx_ubuf_alloc;
1091 struct lws *rx_draining_ext_list;
1092 struct lws *tx_draining_ext_list;
1093 size_t rx_packet_length;
1094 unsigned int rx_ubuf_head;
1095 unsigned char mask[4];
1096 /* Also used for close content... control opcode == < 128 */
1097 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1099 unsigned char ping_payload_len;
1100 unsigned char mask_idx;
1101 unsigned char opcode;
1103 unsigned char rsv_first_msg;
1104 /* zero if no info, or length including 2-byte close code */
1105 unsigned char close_in_ping_buffer_len;
1107 unsigned char stashed_write_type;
1108 unsigned char tx_draining_stashed_wp;
1110 unsigned int final:1;
1111 unsigned int frame_is_binary:1;
1112 unsigned int all_zero_nonce:1;
1113 unsigned int this_frame_masked:1;
1114 unsigned int inside_frame:1; /* next write will be more of frame */
1115 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1116 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1117 unsigned int ping_pending_flag:1;
1118 unsigned int continuation_possible:1;
1119 unsigned int owed_a_fin:1;
1120 unsigned int check_utf8:1;
1121 unsigned int defeat_check_utf8:1;
1122 unsigned int pmce_compressed_message:1;
1123 unsigned int stashed_write_pending:1;
1124 unsigned int rx_draining_ext:1;
1125 unsigned int tx_draining_ext:1;
1130 /* wsi who is master of the cgi points to an lws_cgi */
1133 struct lws_cgi *cgi_list;
1134 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1135 struct lws *wsi; /* owner */
1136 unsigned long content_length;
1137 unsigned long content_length_seen;
1141 unsigned int being_closed:1;
1145 signed char char_to_hex(const char c);
1147 #ifndef LWS_NO_CLIENT
1148 enum lws_chunk_parser {
1159 #ifdef LWS_WITH_ACCESS_LOG
1160 struct lws_access_log {
1171 /* members with mutually exclusive lifetimes are unionized */
1174 struct _lws_http_mode_related http;
1175 #ifdef LWS_USE_HTTP2
1176 struct _lws_http2_related http2;
1178 struct _lws_header_related hdr;
1179 struct _lws_websocket_related ws;
1182 /* lifetime members */
1184 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1185 struct lws_io_watcher w_read;
1187 #if defined(LWS_USE_LIBEV)
1188 struct lws_io_watcher w_write;
1190 time_t pending_timeout_limit;
1194 struct lws_context *context;
1195 struct lws_vhost *vhost;
1196 struct lws *parent; /* points to parent, if any */
1197 struct lws *child_list; /* points to first child */
1198 struct lws *sibling_list; /* subsequent children at same level */
1200 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1202 const struct lws_protocols *protocol;
1203 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1204 struct lws *timeout_list;
1205 struct lws **timeout_list_prev;
1206 #ifdef LWS_WITH_ACCESS_LOG
1207 struct lws_access_log access_log;
1210 /* rxflow handling */
1211 unsigned char *rxflow_buffer;
1212 /* truncated send handling */
1213 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1214 #ifndef LWS_NO_EXTENSIONS
1215 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1216 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1218 #ifdef LWS_OPENSSL_SUPPORT
1220 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1223 struct lws *pending_read_list_prev, *pending_read_list_next;
1225 #ifdef LWS_WITH_HTTP_PROXY
1226 struct lws_rewrite *rw;
1229 unsigned long action_start;
1230 unsigned long latency_start;
1233 lws_sockfd_type sock;
1236 int position_in_fds_table;
1239 unsigned int trunc_alloc_len; /* size of malloc */
1240 unsigned int trunc_offset; /* where we are in terms of spilling */
1241 unsigned int trunc_len; /* how much is buffered */
1242 #ifndef LWS_NO_CLIENT
1243 int chunk_remaining;
1245 unsigned int cache_secs;
1247 unsigned int hdr_parsing_completed:1;
1248 unsigned int http2_substream:1;
1249 unsigned int listener:1;
1250 unsigned int user_space_externally_allocated:1;
1251 unsigned int socket_is_permanently_unusable:1;
1252 unsigned int rxflow_change_to:2;
1253 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1254 unsigned int conn_stat_done:1;
1255 unsigned int cache_reuse:1;
1256 unsigned int cache_revalidate:1;
1257 unsigned int cache_intermediaries:1;
1258 unsigned int favoured_pollin:1;
1259 #ifdef LWS_WITH_ACCESS_LOG
1260 unsigned int access_log_pending:1;
1262 #ifndef LWS_NO_CLIENT
1263 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1264 unsigned int chunked:1; /* if the clientside connection is chunked */
1265 unsigned int client_rx_avail:1;
1267 #ifdef LWS_WITH_HTTP_PROXY
1268 unsigned int perform_rewrite:1;
1270 #ifndef LWS_NO_EXTENSIONS
1271 unsigned int extension_data_pending:1;
1273 #ifdef LWS_OPENSSL_SUPPORT
1274 unsigned int use_ssl:2;
1275 unsigned int upgraded:1;
1278 unsigned int sock_send_blocking:1;
1280 #ifdef LWS_OPENSSL_SUPPORT
1281 unsigned int redirect_to_https:1;
1285 #ifndef LWS_NO_EXTENSIONS
1286 unsigned char count_act_ext;
1288 unsigned char ietf_spec_revision;
1289 char mode; /* enum connection_mode */
1290 char state; /* enum lws_connection_states */
1291 char state_pre_close;
1292 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1293 char rx_frame_type; /* enum lws_write_protocol */
1294 char pending_timeout; /* enum pending_timeout */
1295 char pps; /* enum lws_pending_protocol_send */
1296 char tsi; /* thread service index we belong to */
1298 char cgi_channel; /* which of stdin/out/err */
1301 #ifndef LWS_NO_CLIENT
1302 char chunk_parser; /* enum lws_chunk_parser */
1306 LWS_EXTERN int log_level;
1309 lws_socket_bind(struct lws_vhost *vhost, int sockfd, int port,
1313 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1316 remove_wsi_socket_from_fds(struct lws *wsi);
1318 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1322 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1323 int ret, int completion) {
1325 (void)context; (void)wsi; (void)action; (void)ret;
1330 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1331 do { (void)context; (void)wsi; } while (0);
1334 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1336 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1337 int ret, int completion);
1341 lws_set_protocol_write_pending(struct lws *wsi,
1342 enum lws_pending_protocol_send pend);
1343 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1344 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1346 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1347 lws_parse(struct lws *wsi, unsigned char c);
1349 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1350 lws_http_action(struct lws *wsi);
1353 lws_b64_selftest(void);
1356 lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
1359 lws_service_flag_pending(struct lws_context *context, int tsi);
1361 #if defined(_WIN32) || defined(MBED_OPERATORS)
1362 LWS_EXTERN struct lws *
1363 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1366 insert_wsi(struct lws_context *context, struct lws *wsi);
1369 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1371 #define wsi_from_fd(A,B) A->lws_lookup[B]
1372 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1373 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1376 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1377 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1379 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1380 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1383 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1384 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1386 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1387 lws_client_connect_2(struct lws *wsi);
1389 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1390 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1391 const char *path, const char *host);
1393 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1394 lws_create_new_server_wsi(struct lws_vhost *vhost);
1396 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1397 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1400 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1402 LWS_EXTERN struct lws *
1403 lws_client_connect_via_info2(struct lws *wsi);
1409 #ifndef LWS_NO_EXTENSIONS
1411 lws_context_init_extensions(struct lws_context_creation_info *info,
1412 struct lws_context *context);
1414 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1415 void *v, size_t len);
1418 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1420 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1421 void *arg, int len);
1424 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1425 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1426 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1427 #define lws_issue_raw_ext_access lws_issue_raw
1428 #define lws_context_init_extensions(_a, _b)
1431 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1432 lws_client_interpret_server_handshake(struct lws *wsi);
1434 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1435 lws_rx_sm(struct lws *wsi, unsigned char c);
1438 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1440 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1441 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1444 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1446 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1447 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1448 enum lws_callback_reasons reason, void *user,
1449 void *in, size_t len);
1450 #ifdef LWS_USE_HTTP2
1451 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1452 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1454 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1455 unsigned char *buf, int len);
1456 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1458 lws_http2_parser(struct lws *wsi, unsigned char c);
1459 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1461 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1462 unsigned int sid, unsigned int len,
1463 unsigned char *buf);
1464 LWS_EXTERN struct lws *
1465 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1466 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1469 lws_add_http2_header_by_name(struct lws *wsi,
1470 const unsigned char *name,
1471 const unsigned char *value, int length,
1472 unsigned char **p, unsigned char *end);
1474 lws_add_http2_header_by_token(struct lws *wsi,
1475 enum lws_token_indexes token,
1476 const unsigned char *value, int length,
1477 unsigned char **p, unsigned char *end);
1479 lws_add_http2_header_status(struct lws *wsi,
1480 unsigned int code, unsigned char **p,
1481 unsigned char *end);
1483 void lws_http2_configure_if_upgraded(struct lws *wsi);
1485 #define lws_http2_configure_if_upgraded(x)
1489 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1491 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1492 lws_header_table_attach(struct lws *wsi, int autoservice);
1495 lws_header_table_detach(struct lws *wsi, int autoservice);
1498 lws_header_table_reset(struct lws *wsi, int autoservice);
1500 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1501 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1503 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1504 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1506 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1507 lws_ensure_user_space(struct lws *wsi);
1510 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1512 #ifndef LWS_NO_SERVER
1513 int lws_context_init_server(struct lws_context_creation_info *info,
1514 struct lws_vhost *vhost);
1515 LWS_EXTERN struct lws_vhost *
1516 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1518 handshake_0405(struct lws_context *context, struct lws *wsi);
1519 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1520 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1522 lws_server_get_canonical_hostname(struct lws_context *context,
1523 struct lws_context_creation_info *info);
1525 #define lws_context_init_server(_a, _b) (0)
1526 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1527 #define lws_server_get_canonical_hostname(_a, _b)
1530 #ifndef LWS_NO_DAEMONIZE
1531 LWS_EXTERN int get_daemonize_pid();
1533 #define get_daemonize_pid() (0)
1536 #if !defined(MBED_OPERATORS)
1537 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1538 interface_to_sa(struct lws_context *context, const char *ifname,
1539 struct sockaddr_in *addr, size_t addrlen);
1541 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1543 enum lws_ssl_capable_status {
1544 LWS_SSL_CAPABLE_ERROR = -1,
1545 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1548 #ifndef LWS_OPENSSL_SUPPORT
1549 #define LWS_SSL_ENABLED(context) (0)
1550 #define lws_context_init_server_ssl(_a, _b) (0)
1551 #define lws_ssl_destroy(_a)
1552 #define lws_context_init_http2_ssl(_a)
1553 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1554 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1555 #define lws_ssl_pending lws_ssl_pending_no_ssl
1556 #define lws_server_socket_service_ssl(_b, _c) (0)
1557 #define lws_ssl_close(_a) (0)
1558 #define lws_ssl_context_destroy(_a)
1559 #define lws_ssl_SSL_CTX_destroy(_a)
1560 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1561 #define lws_context_init_ssl_library(_a)
1563 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1564 LWS_EXTERN int openssl_websocket_private_data_index;
1565 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1566 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1567 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1568 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1569 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1570 lws_ssl_pending(struct lws *wsi);
1572 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1573 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1574 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1576 lws_ssl_close(struct lws *wsi);
1578 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1580 lws_ssl_context_destroy(struct lws_context *context);
1582 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1584 lws_ssl_client_bio_create(struct lws *wsi);
1586 lws_ssl_client_connect1(struct lws *wsi);
1588 lws_ssl_client_connect2(struct lws *wsi);
1590 lws_ssl_elaborate_error(void);
1591 #ifndef LWS_NO_SERVER
1593 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1594 struct lws_vhost *vhost);
1596 #define lws_context_init_server_ssl(_a, _b) (0)
1599 lws_ssl_destroy(struct lws_vhost *vhost);
1603 #ifdef LWS_USE_HTTP2
1605 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1607 #define lws_context_init_http2_ssl(_a)
1612 static LWS_INLINE void
1613 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1615 pthread_mutex_init(&pt->lock, NULL);
1618 static LWS_INLINE void
1619 lws_pt_mutex_destroy(struct lws_context_per_thread *pt)
1621 pthread_mutex_destroy(&pt->lock);
1624 static LWS_INLINE void
1625 lws_pt_lock(struct lws_context_per_thread *pt)
1627 pthread_mutex_lock(&pt->lock);
1630 static LWS_INLINE void
1631 lws_pt_unlock(struct lws_context_per_thread *pt)
1633 pthread_mutex_unlock(&pt->lock);
1636 #define lws_pt_mutex_init(_a) (void)(_a)
1637 #define lws_pt_mutex_destroy(_a) (void)(_a)
1638 #define lws_pt_lock(_a) (void)(_a)
1639 #define lws_pt_unlock(_a) (void)(_a)
1642 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1643 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1645 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1646 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1648 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1649 lws_ssl_pending_no_ssl(struct lws *wsi);
1651 #ifdef LWS_WITH_HTTP_PROXY
1652 struct lws_rewrite {
1653 hubbub_parser *parser;
1654 hubbub_parser_optparams params;
1655 const char *from, *to;
1656 int from_len, to_len;
1657 unsigned char *p, *end;
1660 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1665 return strncmp((const char *)s->ptr, p, len);
1667 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1668 LWS_EXTERN struct lws_rewrite *
1669 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1671 lws_rewrite_destroy(struct lws_rewrite *r);
1673 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1676 #ifndef LWS_NO_CLIENT
1677 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1679 struct lws_pollfd *pollfd);
1680 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1681 lws_http_transaction_completed_client(struct lws *wsi);
1682 #ifdef LWS_OPENSSL_SUPPORT
1684 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1685 struct lws_vhost *vhost);
1687 #define lws_context_init_client_ssl(_a, _b) (0)
1689 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1690 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1692 lws_decode_ssl_error(void);
1694 #define lws_context_init_client_ssl(_a, _b) (0)
1695 #define lws_handshake_client(_a, _b, _c) (0)
1699 _lws_rx_flow_control(struct lws *wsi);
1702 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1704 #ifndef LWS_NO_SERVER
1706 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1707 struct lws_pollfd *pollfd);
1709 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1711 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1713 #define lws_server_socket_service(_a, _b, _c) (0)
1714 #define lws_handshake_server(_a, _b, _c) (0)
1715 #define _lws_server_listen_accept_flow_control(a, b) (0)
1719 lws_get_addresses(struct lws_context *context, void *ads, char *name,
1720 int name_len, char *rip, int rip_len);
1722 LWS_EXTERN const char *
1723 lws_get_peer_simple(struct lws *wsi, char *name, int namelen);
1725 #ifdef LWS_WITH_ACCESS_LOG
1727 lws_access_log(struct lws *wsi);
1729 #define lws_access_log(_a)
1733 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1736 lws_protocol_init(struct lws_context *context);
1742 lws_realloc(void *ptr, size_t size);
1744 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1745 lws_zalloc(size_t size);
1747 #define lws_malloc(S) lws_realloc(NULL, S)
1748 #define lws_free(P) lws_realloc(P, 0)
1749 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1753 lws_plat_delete_socket_from_fds(struct lws_context *context,
1754 struct lws *wsi, int m);
1756 lws_plat_insert_socket_into_fds(struct lws_context *context,
1759 lws_plat_service_periodic(struct lws_context *context);
1762 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1763 struct lws_pollfd *pfd);
1765 lws_plat_context_early_init(void);
1767 lws_plat_context_early_destroy(struct lws_context *context);
1769 lws_plat_context_late_destroy(struct lws_context *context);
1771 lws_poll_listen_fd(struct lws_pollfd *fd);
1773 lws_plat_service(struct lws_context *context, int timeout_ms);
1774 LWS_EXTERN LWS_VISIBLE int
1775 lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1777 lws_plat_init(struct lws_context *context,
1778 struct lws_context_creation_info *info);
1780 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1781 LWS_EXTERN unsigned long long
1782 time_in_microseconds(void);
1783 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1784 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1786 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1787 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);