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
356 #ifndef SYSTEM_RANDOM_FILEPATH
357 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
360 enum lws_websocket_opcodes_07 {
361 LWSWSOPC_CONTINUATION = 0,
362 LWSWSOPC_TEXT_FRAME = 1,
363 LWSWSOPC_BINARY_FRAME = 2,
365 LWSWSOPC_NOSPEC__MUX = 7,
367 /* control extensions 8+ */
375 enum lws_connection_states {
377 LWSS_HTTP_ISSUING_FILE,
382 LWSS_CLIENT_HTTP_ESTABLISHED,
383 LWSS_CLIENT_UNCONNECTED,
384 LWSS_RETURNED_CLOSE_ALREADY,
385 LWSS_AWAITING_CLOSE_ACK,
386 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
389 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
390 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
391 LWSS_HTTP2_ESTABLISHED,
402 enum http_connection_type {
403 HTTP_CONNECTION_CLOSE,
404 HTTP_CONNECTION_KEEP_ALIVE
407 enum lws_pending_protocol_send {
409 LWS_PPS_HTTP2_MY_SETTINGS,
410 LWS_PPS_HTTP2_ACK_SETTINGS,
414 enum lws_rx_parse_state {
421 LWS_RXPS_04_FRAME_HDR_1,
422 LWS_RXPS_04_FRAME_HDR_LEN,
423 LWS_RXPS_04_FRAME_HDR_LEN16_2,
424 LWS_RXPS_04_FRAME_HDR_LEN16_1,
425 LWS_RXPS_04_FRAME_HDR_LEN64_8,
426 LWS_RXPS_04_FRAME_HDR_LEN64_7,
427 LWS_RXPS_04_FRAME_HDR_LEN64_6,
428 LWS_RXPS_04_FRAME_HDR_LEN64_5,
429 LWS_RXPS_04_FRAME_HDR_LEN64_4,
430 LWS_RXPS_04_FRAME_HDR_LEN64_3,
431 LWS_RXPS_04_FRAME_HDR_LEN64_2,
432 LWS_RXPS_04_FRAME_HDR_LEN64_1,
434 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
435 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
436 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
437 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
439 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
443 enum connection_mode {
445 LWSCM_HTTP_CLIENT, /* we are client to someone else's server */
446 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
447 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
448 LWSCM_PRE_WS_SERVING_ACCEPT,
455 /* transient, ssl delay hiding */
456 LWSCM_SSL_ACK_PENDING,
459 /* transient modes */
460 LWSCM_WSCL_WAITING_CONNECT,
461 LWSCM_WSCL_WAITING_PROXY_REPLY,
462 LWSCM_WSCL_ISSUE_HANDSHAKE,
463 LWSCM_WSCL_ISSUE_HANDSHAKE2,
464 LWSCM_WSCL_WAITING_SSL,
465 LWSCM_WSCL_WAITING_SERVER_REPLY,
466 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
467 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
469 /* special internal types */
470 LWSCM_SERVER_LISTENER,
471 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
475 LWS_RXFLOW_ALLOW = (1 << 0),
476 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
479 /* this is not usable directly by user code any more, lws_close_reason() */
480 #define LWS_WRITE_CLOSE 4
482 struct lws_protocols;
485 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
487 struct lws_io_watcher {
492 uv_poll_t uv_watcher;
494 struct lws_context *context;
497 struct lws_signal_watcher {
499 ev_signal ev_watcher;
502 uv_signal_t uv_watcher;
504 struct lws_context *context;
509 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
510 struct lws_fd_hashtable {
517 * This is totally opaque to code using the library. It's exported as a
518 * forward-reference pointer-only declaration; the user can use the pointer with
519 * other APIs to get information out of it.
522 struct lws_fragments {
525 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
529 * these are assigned from a pool held in the context.
530 * Both client and server mode uses them for http header analysis
533 struct allocated_headers {
534 struct lws *wsi; /* owner */
535 char *data; /* prepared by context init to point to dedicated storage */
537 * the randomly ordered fragments, indexed by frag_index and
538 * lws_fragments->nfrag for continuation.
540 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
543 * for each recognized token, frag_index says which frag[] his data
544 * starts in (0 means the token did not appear)
545 * the actual header data gets dumped as it comes in, into data[]
547 unsigned char frag_index[WSI_TOKEN_COUNT];
548 unsigned char rx[2048];
553 #ifndef LWS_NO_CLIENT
554 char initial_handshake_hash_base64[30];
557 unsigned char in_use;
562 * so we can have n connections being serviced simultaneously,
563 * these things need to be isolated per-thread.
566 struct lws_context_per_thread {
568 pthread_mutex_t lock;
570 struct lws_pollfd *fds;
571 struct lws *rx_draining_ext_list;
572 struct lws *tx_draining_ext_list;
573 struct lws *timeout_list;
574 struct lws_context *context;
576 struct lws_cgi *cgi_list;
578 void *http_header_data;
579 struct allocated_headers *ah_pool;
580 struct lws *ah_wait_list;
581 int ah_wait_list_length;
582 #ifdef LWS_OPENSSL_SUPPORT
583 struct lws *pending_read_list; /* linked list */
585 #ifndef LWS_NO_SERVER
586 struct lws *wsi_listening;
588 #if defined(LWS_USE_LIBEV)
589 struct ev_loop *io_loop_ev;
591 #if defined(LWS_USE_LIBUV)
592 uv_loop_t *io_loop_uv;
593 uv_signal_t signals[8];
594 uv_timer_t uv_timeout_watcher;
597 #if defined(LWS_USE_LIBEV)
598 struct lws_io_watcher w_accept;
600 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
601 struct lws_signal_watcher w_sigint;
602 unsigned char ev_loop_foreign:1;
605 unsigned long count_conns;
607 * usable by anything in the service code, but only if the scope
608 * does not last longer than the service action (since next service
609 * of any socket can likewise use it and overwrite)
611 unsigned char *serv_buf;
615 int dummy_pipe_fds[2];
617 unsigned int fds_count;
619 short ah_count_in_use;
624 * virtual host -related context information
625 * vhostwide SSL context
630 * context -> vhost -> wsi
632 * incoming connection non-SSL vhost binding:
634 * listen socket -> wsi -> select vhost after first headers
636 * incoming connection SSL vhost binding:
638 * SSL SNI -> wsi -> bind after SSL negotiation
642 char http_proxy_address[128];
643 char proxy_basic_auth_token[128];
644 struct lws_context *context;
645 struct lws_vhost *vhost_next;
646 const struct lws_http_mount *mount_list;
647 struct lws *lserv_wsi;
650 const struct lws_protocols *protocols;
651 void **protocol_vh_privs;
652 const struct lws_protocol_vhost_options *pvo;
653 struct lws **same_vh_protocol_list;
654 #ifdef LWS_OPENSSL_SUPPORT
656 SSL_CTX *ssl_client_ctx;
658 #ifndef LWS_NO_EXTENSIONS
659 const struct lws_extension *extensions;
661 unsigned long long rx, tx;
662 unsigned long conn, trans, ws_upgrades, http2_upgrades;
665 unsigned int http_proxy_port;
666 unsigned int options;
671 int keepalive_timeout;
672 #ifdef LWS_WITH_ACCESS_LOG
676 #ifdef LWS_OPENSSL_SUPPORT
678 int allow_non_ssl_on_ssl_port;
679 unsigned int user_supplied_ssl_ctx:1;
681 unsigned char default_protocol_index;
685 * the rest is managed per-context, that includes
687 * - processwide single fd -> wsi lookup
688 * - contextwide headers pool
692 time_t last_timeout_check_s;
694 struct lws_plat_file_ops fops;
695 struct lws_context_per_thread pt[LWS_MAX_SMP];
697 /* different implementation between unix and windows */
698 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
700 struct lws **lws_lookup; /* fd to wsi */
702 struct lws_vhost *vhost_list;
703 struct lws_plugin *plugin_list;
704 const struct lws_token_limits *token_limits;
706 const char *server_string;
708 #if defined(LWS_USE_LIBEV)
709 lws_ev_signal_cb_t * lws_ev_sigint_cb;
711 #if defined(LWS_USE_LIBUV)
712 uv_signal_cb lws_uv_sigint_cb;
714 char canonical_hostname[128];
716 unsigned long worst_latency;
717 char worst_latency_info[256];
721 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
724 int started_with_parent;
728 #ifdef LWS_OPENSSL_SUPPORT
729 #define lws_ssl_anybody_has_buffered_read(w) \
730 (w->vhost->use_ssl && \
731 w->context->pt[(int)w->tsi].pending_read_list)
732 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
733 (/*c->use_ssl && */ \
734 c->pt[(int)t].pending_read_list)
736 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
737 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
739 int count_wsi_allocated;
740 int count_cgi_spawned;
741 unsigned int options;
742 unsigned int fd_limit_per_thread;
743 unsigned int timeout_secs;
744 unsigned int pt_serv_buf_size;
745 int max_http_header_data;
748 * set to the Thread ID that's doing the service loop just before entry
749 * to poll indicates service thread likely idling in poll()
750 * volatile because other threads may check it as part of processing
751 * for pollfd event change.
753 volatile int service_tid;
754 int service_tid_detected;
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(vh) \
849 (!lws_check_opt(vh->context->options, LWS_SERVER_OPTION_DISABLE_IPV6) &&
850 !lws_check_opt(vh->options, LWS_SERVER_OPTION_DISABLE_IPV6))
852 #define LWS_IPV6_ENABLED(context) (0)
855 #ifdef LWS_USE_UNIX_SOCK
856 #define LWS_UNIX_SOCK_ENABLED(vhost) \
857 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
859 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
861 enum uri_path_states {
864 URIPS_SEEN_SLASH_DOT,
865 URIPS_SEEN_SLASH_DOT_DOT,
868 enum uri_esc_states {
871 URIES_SEEN_PERCENT_H1,
874 /* notice that these union members:
880 * all have a pointer to allocated_headers struct as their first member.
882 * It means for allocated_headers access, the three union paths can all be
883 * used interchangeably to access the same data
887 #ifndef LWS_NO_CLIENT
888 struct client_info_stash {
898 struct _lws_header_related {
899 /* MUST be first in struct */
900 struct allocated_headers *ah;
901 struct lws *ah_wait_list;
902 unsigned char *preamble_rx;
903 #ifndef LWS_NO_CLIENT
904 struct client_info_stash *stash;
906 unsigned int preamble_rx_len;
907 enum uri_path_states ups;
908 enum uri_esc_states ues;
910 unsigned int current_token_limit;
911 #ifndef LWS_NO_CLIENT
912 unsigned short c_port;
915 char post_literal_equal;
916 unsigned char parser_state; /* enum lws_token_indexes */
920 struct _lws_http_mode_related {
921 /* MUST be first in struct */
922 struct allocated_headers *ah; /* mirroring _lws_header_related */
923 struct lws *ah_wait_list;
924 unsigned char *preamble_rx;
925 #ifndef LWS_NO_CLIENT
926 struct client_info_stash *stash;
928 unsigned int preamble_rx_len;
929 struct lws *new_wsi_list;
930 unsigned long filepos;
931 unsigned long filelen;
934 enum http_version request_version;
935 enum http_connection_type connection_type;
936 unsigned int content_length;
937 unsigned int content_remain;
942 enum lws_http2_settings {
943 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
944 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
945 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
946 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
947 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
948 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
950 LWS_HTTP2_SETTINGS__COUNT /* always last */
953 enum lws_http2_wellknown_frame_types {
954 LWS_HTTP2_FRAME_TYPE_DATA,
955 LWS_HTTP2_FRAME_TYPE_HEADERS,
956 LWS_HTTP2_FRAME_TYPE_PRIORITY,
957 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
958 LWS_HTTP2_FRAME_TYPE_SETTINGS,
959 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
960 LWS_HTTP2_FRAME_TYPE_PING,
961 LWS_HTTP2_FRAME_TYPE_GOAWAY,
962 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
963 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
965 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
968 enum lws_http2_flags {
969 LWS_HTTP2_FLAG_END_STREAM = 1,
970 LWS_HTTP2_FLAG_END_HEADERS = 4,
971 LWS_HTTP2_FLAG_PADDED = 8,
972 LWS_HTTP2_FLAG_PRIORITY = 0x20,
974 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
977 #define LWS_HTTP2_STREAM_ID_MASTER 0
978 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
979 #define LWS_HTTP2_SETTINGS_LENGTH 6
981 struct http2_settings {
982 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
985 enum http2_hpack_state {
987 /* optional before first header block */
989 HKPS_OPT_E_DEPENDENCY,
1002 /* optional after last header block */
1003 HKPS_OPT_DISCARD_PADDING,
1006 enum http2_hpack_type {
1008 HPKT_INDEXED_HDR_6_VALUE_INCR,
1009 HPKT_LITERAL_HDR_VALUE_INCR,
1010 HPKT_INDEXED_HDR_4_VALUE,
1011 HPKT_LITERAL_HDR_VALUE,
1015 struct hpack_dt_entry {
1016 int token; /* additions that don't map to a token are ignored */
1021 struct hpack_dynamic_table {
1022 struct hpack_dt_entry *entries;
1030 struct _lws_http2_related {
1032 * having this first lets us also re-use all HTTP union code
1033 * and in turn, http_mode_related has allocated headers in right
1034 * place so we can use the header apis on the wsi directly still
1036 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1038 struct http2_settings my_settings;
1039 struct http2_settings peer_settings;
1041 struct lws *parent_wsi;
1042 struct lws *next_child_wsi;
1044 struct hpack_dynamic_table *hpack_dyn_table;
1045 struct lws *stream_wsi;
1046 unsigned char ping_payload[8];
1047 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1050 unsigned int length;
1051 unsigned int stream_id;
1052 enum http2_hpack_state hpack;
1053 enum http2_hpack_type hpack_type;
1054 unsigned int header_index;
1055 unsigned int hpack_len;
1056 unsigned int hpack_e_dep;
1058 unsigned int my_stream_id;
1059 unsigned int child_count;
1062 unsigned int END_STREAM:1;
1063 unsigned int END_HEADERS:1;
1064 unsigned int send_END_STREAM:1;
1065 unsigned int GOING_AWAY;
1066 unsigned int requested_POLLOUT:1;
1067 unsigned int waiting_tx_credit:1;
1068 unsigned int huff:1;
1069 unsigned int value:1;
1071 unsigned short round_robin_POLLOUT;
1072 unsigned short count_POLLOUT_children;
1073 unsigned short hpack_pos;
1076 unsigned char flags;
1077 unsigned char frame_state;
1078 unsigned char padding;
1079 unsigned char hpack_m;
1080 unsigned char initialized;
1083 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1087 struct _lws_websocket_related {
1088 /* cheapest way to deal with ah overlap with ws union transition */
1089 struct _lws_header_related hdr;
1091 unsigned int rx_ubuf_alloc;
1092 struct lws *rx_draining_ext_list;
1093 struct lws *tx_draining_ext_list;
1094 size_t rx_packet_length;
1095 unsigned int rx_ubuf_head;
1096 unsigned char mask[4];
1097 /* Also used for close content... control opcode == < 128 */
1098 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1100 unsigned char ping_payload_len;
1101 unsigned char mask_idx;
1102 unsigned char opcode;
1104 unsigned char rsv_first_msg;
1105 /* zero if no info, or length including 2-byte close code */
1106 unsigned char close_in_ping_buffer_len;
1108 unsigned char stashed_write_type;
1109 unsigned char tx_draining_stashed_wp;
1111 unsigned int final:1;
1112 unsigned int frame_is_binary:1;
1113 unsigned int all_zero_nonce:1;
1114 unsigned int this_frame_masked:1;
1115 unsigned int inside_frame:1; /* next write will be more of frame */
1116 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1117 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1118 unsigned int ping_pending_flag:1;
1119 unsigned int continuation_possible:1;
1120 unsigned int owed_a_fin:1;
1121 unsigned int check_utf8:1;
1122 unsigned int defeat_check_utf8:1;
1123 unsigned int pmce_compressed_message:1;
1124 unsigned int stashed_write_pending:1;
1125 unsigned int rx_draining_ext:1;
1126 unsigned int tx_draining_ext:1;
1131 /* wsi who is master of the cgi points to an lws_cgi */
1134 struct lws_cgi *cgi_list;
1135 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1136 struct lws *wsi; /* owner */
1137 unsigned long content_length;
1138 unsigned long content_length_seen;
1142 unsigned int being_closed:1;
1146 signed char char_to_hex(const char c);
1148 #ifndef LWS_NO_CLIENT
1149 enum lws_chunk_parser {
1160 #ifdef LWS_WITH_ACCESS_LOG
1161 struct lws_access_log {
1172 /* members with mutually exclusive lifetimes are unionized */
1175 struct _lws_http_mode_related http;
1176 #ifdef LWS_USE_HTTP2
1177 struct _lws_http2_related http2;
1179 struct _lws_header_related hdr;
1180 struct _lws_websocket_related ws;
1183 /* lifetime members */
1185 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1186 struct lws_io_watcher w_read;
1188 #if defined(LWS_USE_LIBEV)
1189 struct lws_io_watcher w_write;
1191 time_t pending_timeout_limit;
1195 struct lws_context *context;
1196 struct lws_vhost *vhost;
1197 struct lws *parent; /* points to parent, if any */
1198 struct lws *child_list; /* points to first child */
1199 struct lws *sibling_list; /* subsequent children at same level */
1201 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1203 const struct lws_protocols *protocol;
1204 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1205 struct lws *timeout_list;
1206 struct lws **timeout_list_prev;
1207 #ifdef LWS_WITH_ACCESS_LOG
1208 struct lws_access_log access_log;
1211 /* rxflow handling */
1212 unsigned char *rxflow_buffer;
1213 /* truncated send handling */
1214 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1215 #ifndef LWS_NO_EXTENSIONS
1216 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1217 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1219 #ifdef LWS_OPENSSL_SUPPORT
1221 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1224 struct lws *pending_read_list_prev, *pending_read_list_next;
1226 #ifdef LWS_WITH_HTTP_PROXY
1227 struct lws_rewrite *rw;
1230 unsigned long action_start;
1231 unsigned long latency_start;
1234 lws_sockfd_type sock;
1237 int position_in_fds_table;
1240 unsigned int trunc_alloc_len; /* size of malloc */
1241 unsigned int trunc_offset; /* where we are in terms of spilling */
1242 unsigned int trunc_len; /* how much is buffered */
1243 #ifndef LWS_NO_CLIENT
1244 int chunk_remaining;
1246 unsigned int cache_secs;
1248 unsigned int hdr_parsing_completed:1;
1249 unsigned int http2_substream:1;
1250 unsigned int listener:1;
1251 unsigned int user_space_externally_allocated:1;
1252 unsigned int socket_is_permanently_unusable:1;
1253 unsigned int rxflow_change_to:2;
1254 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1255 unsigned int conn_stat_done:1;
1256 unsigned int cache_reuse:1;
1257 unsigned int cache_revalidate:1;
1258 unsigned int cache_intermediaries:1;
1259 unsigned int favoured_pollin: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 */
1305 #if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT)
1306 char reason_bf; /* internal writeable callback reason bitfield */
1310 LWS_EXTERN int log_level;
1313 lws_socket_bind(struct lws_vhost *vhost, int sockfd, int port,
1317 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1320 remove_wsi_socket_from_fds(struct lws *wsi);
1322 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1326 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1327 int ret, int completion) {
1329 (void)context; (void)wsi; (void)action; (void)ret;
1334 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1335 do { (void)context; (void)wsi; } while (0);
1338 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1340 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1341 int ret, int completion);
1345 lws_set_protocol_write_pending(struct lws *wsi,
1346 enum lws_pending_protocol_send pend);
1347 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1348 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1350 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1351 lws_parse(struct lws *wsi, unsigned char c);
1353 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1354 lws_http_action(struct lws *wsi);
1357 lws_b64_selftest(void);
1360 lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
1363 lws_service_flag_pending(struct lws_context *context, int tsi);
1365 #if defined(_WIN32) || defined(MBED_OPERATORS)
1366 LWS_EXTERN struct lws *
1367 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1370 insert_wsi(struct lws_context *context, struct lws *wsi);
1373 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1375 #define wsi_from_fd(A,B) A->lws_lookup[B]
1376 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1377 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1380 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1381 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1383 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1384 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1387 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1388 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1390 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1391 lws_client_connect_2(struct lws *wsi);
1393 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1394 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1395 const char *path, const char *host);
1397 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1398 lws_create_new_server_wsi(struct lws_vhost *vhost);
1400 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1401 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1404 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1406 LWS_EXTERN struct lws *
1407 lws_client_connect_via_info2(struct lws *wsi);
1413 #ifndef LWS_NO_EXTENSIONS
1415 lws_context_init_extensions(struct lws_context_creation_info *info,
1416 struct lws_context *context);
1418 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1419 void *v, size_t len);
1422 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1424 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1425 void *arg, int len);
1428 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1429 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1430 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1431 #define lws_issue_raw_ext_access lws_issue_raw
1432 #define lws_context_init_extensions(_a, _b)
1435 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1436 lws_client_interpret_server_handshake(struct lws *wsi);
1438 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1439 lws_rx_sm(struct lws *wsi, unsigned char c);
1442 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1444 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1445 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1448 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1450 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1451 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1452 enum lws_callback_reasons reason, void *user,
1453 void *in, size_t len);
1454 #ifdef LWS_USE_HTTP2
1455 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1456 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1458 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1459 unsigned char *buf, int len);
1460 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1462 lws_http2_parser(struct lws *wsi, unsigned char c);
1463 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1465 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1466 unsigned int sid, unsigned int len,
1467 unsigned char *buf);
1468 LWS_EXTERN struct lws *
1469 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1470 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1473 lws_add_http2_header_by_name(struct lws *wsi,
1474 const unsigned char *name,
1475 const unsigned char *value, int length,
1476 unsigned char **p, unsigned char *end);
1478 lws_add_http2_header_by_token(struct lws *wsi,
1479 enum lws_token_indexes token,
1480 const unsigned char *value, int length,
1481 unsigned char **p, unsigned char *end);
1483 lws_add_http2_header_status(struct lws *wsi,
1484 unsigned int code, unsigned char **p,
1485 unsigned char *end);
1487 void lws_http2_configure_if_upgraded(struct lws *wsi);
1489 #define lws_http2_configure_if_upgraded(x)
1493 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1495 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1496 lws_header_table_attach(struct lws *wsi, int autoservice);
1499 lws_header_table_detach(struct lws *wsi, int autoservice);
1502 lws_header_table_reset(struct lws *wsi, int autoservice);
1504 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1505 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1507 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1508 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1510 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1511 lws_ensure_user_space(struct lws *wsi);
1514 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1516 #ifndef LWS_NO_SERVER
1517 int lws_context_init_server(struct lws_context_creation_info *info,
1518 struct lws_vhost *vhost);
1519 LWS_EXTERN struct lws_vhost *
1520 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1522 handshake_0405(struct lws_context *context, struct lws *wsi);
1523 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1524 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1526 lws_server_get_canonical_hostname(struct lws_context *context,
1527 struct lws_context_creation_info *info);
1529 #define lws_context_init_server(_a, _b) (0)
1530 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1531 #define lws_server_get_canonical_hostname(_a, _b)
1534 #ifndef LWS_NO_DAEMONIZE
1535 LWS_EXTERN int get_daemonize_pid();
1537 #define get_daemonize_pid() (0)
1540 #if !defined(MBED_OPERATORS)
1541 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1542 interface_to_sa(struct lws_vhost *vh, const char *ifname,
1543 struct sockaddr_in *addr, size_t addrlen);
1545 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1547 enum lws_ssl_capable_status {
1548 LWS_SSL_CAPABLE_ERROR = -1,
1549 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1552 #ifndef LWS_OPENSSL_SUPPORT
1553 #define LWS_SSL_ENABLED(context) (0)
1554 #define lws_context_init_server_ssl(_a, _b) (0)
1555 #define lws_ssl_destroy(_a)
1556 #define lws_context_init_http2_ssl(_a)
1557 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1558 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1559 #define lws_ssl_pending lws_ssl_pending_no_ssl
1560 #define lws_server_socket_service_ssl(_b, _c) (0)
1561 #define lws_ssl_close(_a) (0)
1562 #define lws_ssl_context_destroy(_a)
1563 #define lws_ssl_SSL_CTX_destroy(_a)
1564 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1565 #define lws_context_init_ssl_library(_a)
1567 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1568 LWS_EXTERN int openssl_websocket_private_data_index;
1569 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1570 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1571 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1572 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1573 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1574 lws_ssl_pending(struct lws *wsi);
1576 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1577 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1578 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1580 lws_ssl_close(struct lws *wsi);
1582 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1584 lws_ssl_context_destroy(struct lws_context *context);
1586 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1588 lws_ssl_client_bio_create(struct lws *wsi);
1590 lws_ssl_client_connect1(struct lws *wsi);
1592 lws_ssl_client_connect2(struct lws *wsi);
1594 lws_ssl_elaborate_error(void);
1595 #ifndef LWS_NO_SERVER
1597 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1598 struct lws_vhost *vhost);
1600 #define lws_context_init_server_ssl(_a, _b) (0)
1603 lws_ssl_destroy(struct lws_vhost *vhost);
1607 #ifdef LWS_USE_HTTP2
1609 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1611 #define lws_context_init_http2_ssl(_a)
1616 static LWS_INLINE void
1617 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1619 pthread_mutex_init(&pt->lock, NULL);
1622 static LWS_INLINE void
1623 lws_pt_mutex_destroy(struct lws_context_per_thread *pt)
1625 pthread_mutex_destroy(&pt->lock);
1628 static LWS_INLINE void
1629 lws_pt_lock(struct lws_context_per_thread *pt)
1631 pthread_mutex_lock(&pt->lock);
1634 static LWS_INLINE void
1635 lws_pt_unlock(struct lws_context_per_thread *pt)
1637 pthread_mutex_unlock(&pt->lock);
1640 #define lws_pt_mutex_init(_a) (void)(_a)
1641 #define lws_pt_mutex_destroy(_a) (void)(_a)
1642 #define lws_pt_lock(_a) (void)(_a)
1643 #define lws_pt_unlock(_a) (void)(_a)
1646 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1647 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1649 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1650 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1652 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1653 lws_ssl_pending_no_ssl(struct lws *wsi);
1655 #ifdef LWS_WITH_HTTP_PROXY
1656 struct lws_rewrite {
1657 hubbub_parser *parser;
1658 hubbub_parser_optparams params;
1659 const char *from, *to;
1660 int from_len, to_len;
1661 unsigned char *p, *end;
1664 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1669 return strncmp((const char *)s->ptr, p, len);
1671 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1672 LWS_EXTERN struct lws_rewrite *
1673 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1675 lws_rewrite_destroy(struct lws_rewrite *r);
1677 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1680 #ifndef LWS_NO_CLIENT
1681 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1683 struct lws_pollfd *pollfd);
1684 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1685 lws_http_transaction_completed_client(struct lws *wsi);
1686 #ifdef LWS_OPENSSL_SUPPORT
1688 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1689 struct lws_vhost *vhost);
1691 #define lws_context_init_client_ssl(_a, _b) (0)
1693 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1694 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1696 lws_decode_ssl_error(void);
1698 #define lws_context_init_client_ssl(_a, _b) (0)
1699 #define lws_handshake_client(_a, _b, _c) (0)
1703 _lws_rx_flow_control(struct lws *wsi);
1706 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1708 #ifndef LWS_NO_SERVER
1710 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1711 struct lws_pollfd *pollfd);
1713 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1715 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1717 #define lws_server_socket_service(_a, _b, _c) (0)
1718 #define lws_handshake_server(_a, _b, _c) (0)
1719 #define _lws_server_listen_accept_flow_control(a, b) (0)
1722 #ifdef LWS_WITH_ACCESS_LOG
1724 lws_access_log(struct lws *wsi);
1726 #define lws_access_log(_a)
1730 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1733 lws_protocol_init(struct lws_context *context);
1739 lws_realloc(void *ptr, size_t size);
1741 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1742 lws_zalloc(size_t size);
1744 #define lws_malloc(S) lws_realloc(NULL, S)
1745 #define lws_free(P) lws_realloc(P, 0)
1746 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1750 lws_plat_delete_socket_from_fds(struct lws_context *context,
1751 struct lws *wsi, int m);
1753 lws_plat_insert_socket_into_fds(struct lws_context *context,
1756 lws_plat_service_periodic(struct lws_context *context);
1759 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1760 struct lws_pollfd *pfd);
1762 lws_plat_context_early_init(void);
1764 lws_plat_context_early_destroy(struct lws_context *context);
1766 lws_plat_context_late_destroy(struct lws_context *context);
1768 lws_poll_listen_fd(struct lws_pollfd *fd);
1770 lws_plat_service(struct lws_context *context, int timeout_ms);
1771 LWS_EXTERN LWS_VISIBLE int
1772 lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1774 lws_plat_init(struct lws_context *context,
1775 struct lws_context_creation_info *info);
1777 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1778 LWS_EXTERN unsigned long long
1779 time_in_microseconds(void);
1780 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1781 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1783 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1784 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);