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>
41 #if defined(LWS_WITH_ESP8266)
42 #include <user_interface.h>
45 /* rom-provided stdc functions for free, ensure use these instead of libc ones */
47 int ets_vsprintf(char *str, const char *format, va_list argptr);
48 int ets_vsnprintf(char *buffer, size_t sizeOfBuffer, const char *format, va_list argptr);
49 int ets_snprintf(char *str, size_t size, const char *format, ...);
50 int ets_sprintf(char *str, const char *format, ...);
51 int os_printf_plus(const char *format, ...);
55 void *pvPortMalloc(size_t s, const char *f, int line);
56 #define malloc(s) pvPortMalloc(s, "", 0)
57 void *pvPortRealloc(void *p, size_t s, const char *f, int line);
58 #define realloc(p, s) pvPortRealloc(p, s, "", 0)
59 void vPortFree(void *p, const char *f, int line);
60 #define free(p) vPortFree(p, "", 0)
62 void *ets_memcpy(void *dest, const void *src, size_t n);
63 #define memcpy ets_memcpy
64 void *ets_memset(void *dest, int v, size_t n);
65 #define memset ets_memset
66 char *ets_strcpy(char *dest, const char *src);
67 #define strcpy ets_strcpy
68 char *ets_strncpy(char *dest, const char *src, size_t n);
69 #define strncpy ets_strncpy
70 char *ets_strstr(const char *haystack, const char *needle);
71 #define strstr ets_strstr
72 int ets_strcmp(const char *s1, const char *s2);
73 int ets_strncmp(const char *s1, const char *s2, size_t n);
74 #define strcmp ets_strcmp
75 #define strncmp ets_strncmp
76 size_t ets_strlen(const char *s);
77 #define strlen ets_strlen
78 void *ets_memmove(void *dest, const void *src, size_t n);
79 #define memmove ets_memmove
80 char *ets_strchr(const char *s, int c);
81 #define strchr_ets_strchr
93 #ifdef LWS_HAVE_SYS_STAT_H
97 #if defined(WIN32) || defined(_WIN32)
101 #define WINVER 0x0501
102 #define _WIN32_WINNT WINVER
104 #define LWS_NO_DAEMONIZE
105 #define LWS_ERRNO WSAGetLastError()
106 #define LWS_EAGAIN WSAEWOULDBLOCK
107 #define LWS_EALREADY WSAEALREADY
108 #define LWS_EINPROGRESS WSAEINPROGRESS
109 #define LWS_EINTR WSAEINTR
110 #define LWS_EISCONN WSAEISCONN
111 #define LWS_EWOULDBLOCK WSAEWOULDBLOCK
112 #define MSG_NOSIGNAL 0
113 #define SHUT_RDWR SD_BOTH
114 #define SOL_TCP IPPROTO_TCP
115 #define SHUT_WR SD_SEND
117 #define compatible_close(fd) closesocket(fd)
118 #define lws_set_blocking_send(wsi) wsi->sock_send_blocking = 1
119 #define lws_socket_is_valid(x) (!!x)
120 #define LWS_SOCK_INVALID 0
121 #include <winsock2.h>
122 #include <ws2tcpip.h>
125 #ifdef LWS_HAVE_IN6ADDR_H
132 #define __func__ __FUNCTION__
135 #if (defined(_MSC_VER) && _MSC_VER < 1900) || defined(_WIN32_WCE)
136 #define vsnprintf _vsnprintf
138 #ifdef LWS_HAVE__VSNPRINTF
139 #define vsnprintf _vsnprintf
143 #ifdef LWS_HAVE__SNPRINTF
144 #define lws_snprintf _snprintf
147 #else /* not windows --> */
152 #include <sys/types.h>
153 #ifndef MBED_OPERATORS
159 #ifdef LWS_WITH_ESP8266
161 #define vsnprintf ets_vsnprintf
162 #define snprintf ets_snprintf
163 #define sprintf ets_sprintf
165 #include <sys/socket.h>
167 #ifdef LWS_WITH_HTTP_PROXY
168 #include <hubbub/hubbub.h>
169 #include <hubbub/parser.h>
171 #if defined(LWS_BUILTIN_GETIFADDRS)
172 #include <getifaddrs.h>
174 #if !defined(LWS_WITH_ESP8266)
178 #if defined (__ANDROID__)
180 #include <sys/resource.h>
181 #elif defined (__sun)
184 #if !defined(LWS_WITH_ESP8266)
185 #include <sys/syslog.h>
189 #if !defined(LWS_WITH_ESP8266)
190 #include <sys/mman.h>
192 #include <netinet/in.h>
193 #include <netinet/tcp.h>
194 #include <arpa/inet.h>
207 #ifdef LWS_HAVE_SYS_PRCTL_H
208 #include <sys/prctl.h>
212 #include <sys/time.h>
214 #define LWS_ERRNO errno
215 #define LWS_EAGAIN EAGAIN
216 #define LWS_EALREADY EALREADY
217 #define LWS_EINPROGRESS EINPROGRESS
218 #define LWS_EINTR EINTR
219 #define LWS_EISCONN EISCONN
220 #define LWS_EWOULDBLOCK EWOULDBLOCK
222 #define lws_set_blocking_send(wsi)
224 #if defined(MBED_OPERATORS) || defined(LWS_WITH_ESP8266)
225 #define lws_socket_is_valid(x) ((x) != NULL)
226 #define LWS_SOCK_INVALID (NULL)
229 lws_plat_get_peer_simple(struct lws *wsi, char *name, int namelen);
231 #define lws_socket_is_valid(x) (x >= 0)
232 #define LWS_SOCK_INVALID (-1)
236 #ifndef LWS_HAVE_BZERO
238 #define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
242 #ifndef LWS_HAVE_STRERROR
243 #define strerror(x) ""
246 #ifdef LWS_OPENSSL_SUPPORT
249 #ifdef USE_OLD_CYASSL
250 #include <cyassl/openssl/ssl.h>
251 #include <cyassl/error-ssl.h>
253 #include <wolfssl/openssl/ssl.h>
254 #include <wolfssl/error-ssl.h>
255 #endif /* not USE_OLD_CYASSL */
257 #if defined(LWS_USE_POLARSSL)
258 #include <polarssl/ssl.h>
259 #include <polarssl/error.h>
260 #include <polarssl/md5.h>
261 #include <polarssl/sha1.h>
262 #include <polarssl/ecdh.h>
263 #define SSL_ERROR_WANT_READ POLARSSL_ERR_NET_WANT_READ
264 #define SSL_ERROR_WANT_WRITE POLARSSL_ERR_NET_WANT_WRITE
265 #define OPENSSL_VERSION_NUMBER 0x10002000L
267 #if defined(LWS_USE_MBEDTLS)
268 #include <mbedtls/ssl.h>
269 #include <mbedtls/error.h>
270 #include <mbedtls/md5.h>
271 #include <mbedtls/sha1.h>
272 #include <mbedtls/ecdh.h>
274 #include <openssl/ssl.h>
275 #include <openssl/evp.h>
276 #include <openssl/err.h>
277 #include <openssl/md5.h>
278 #include <openssl/sha.h>
279 #ifdef LWS_HAVE_OPENSSL_ECDH_H
280 #include <openssl/ecdh.h>
282 #include <openssl/x509v3.h>
283 #endif /* not USE_MBEDTLS */
284 #endif /* not USE_POLARSSL */
285 #endif /* not USE_WOLFSSL */
288 #include "libwebsockets.h"
289 #if defined(WIN32) || defined(_WIN32)
291 static inline int compatible_close(int fd) { return close(fd); }
294 #if defined(MBED_OPERATORS)
295 #undef compatible_close
296 #define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
298 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
300 #ifndef LITTLE_ENDIAN
301 #define LITTLE_ENDIAN 1234
304 #define BYTE_ORDER LITTLE_ENDIAN
308 #if defined(LWS_WITH_ESP8266)
309 #undef compatible_close
310 #define compatible_close(fd) { fd->state=ESPCONN_CLOSE; espconn_delete(fd); }
312 esp8266_create_tcp_stream_socket(void);
314 esp8266_tcp_stream_bind(lws_sockfd_type fd, int port, struct lws *wsi);
316 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
318 #ifndef LITTLE_ENDIAN
319 #define LITTLE_ENDIAN 1234
322 #define BYTE_ORDER LITTLE_ENDIAN
327 #if defined(WIN32) || defined(_WIN32)
330 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
332 #ifndef LITTLE_ENDIAN
333 #define LITTLE_ENDIAN 1234
336 #define BYTE_ORDER LITTLE_ENDIAN
339 typedef unsigned __int64 u_int64_t;
345 #define __P(protos) protos
347 #define __P(protos) ()
353 #include <sys/stat.h>
354 #include <sys/time.h>
356 #if defined(__APPLE__)
357 #include <machine/endian.h>
358 #elif defined(__FreeBSD__)
359 #include <sys/endian.h>
360 #elif defined(__linux__)
369 #include <gulliver.h>
370 #if defined(__LITTLEENDIAN__)
371 #define BYTE_ORDER __LITTLEENDIAN__
372 #define LITTLE_ENDIAN __LITTLEENDIAN__
373 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
375 #if defined(__BIGENDIAN__)
376 #define BYTE_ORDER __BIGENDIAN__
377 #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
378 #define BIG_ENDIAN __BIGENDIAN__
382 #if defined(__sun) && defined(__GNUC__)
383 # define BYTE_ORDER __BYTE_ORDER__
384 # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
385 # define BIG_ENDIAN __ORDER_BIG_ENDIAN__
388 #if !defined(BYTE_ORDER)
389 # define BYTE_ORDER __BYTE_ORDER
391 #if !defined(LITTLE_ENDIAN)
392 # define LITTLE_ENDIAN __LITTLE_ENDIAN
394 #if !defined(BIG_ENDIAN)
395 # define BIG_ENDIAN __BIG_ENDIAN
401 * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
402 * but happily have something equivalent in the SO_NOSIGPIPE flag.
405 #define MSG_NOSIGNAL SO_NOSIGPIPE
409 * Solaris 11.X only supports POSIX 2001, MSG_NOSIGNAL appears in
413 #define MSG_NOSIGNAL 0
417 #ifndef FD_HASHTABLE_MODULUS
418 #define FD_HASHTABLE_MODULUS 32
422 #ifndef LWS_DEF_HEADER_LEN
423 #define LWS_DEF_HEADER_LEN 4096
425 #ifndef LWS_DEF_HEADER_POOL
426 #define LWS_DEF_HEADER_POOL 4
428 #ifndef LWS_MAX_PROTOCOLS
429 #define LWS_MAX_PROTOCOLS 5
431 #ifndef LWS_MAX_EXTENSIONS_ACTIVE
432 #define LWS_MAX_EXTENSIONS_ACTIVE 2
434 #ifndef LWS_MAX_EXT_OFFERS
435 #define LWS_MAX_EXT_OFFERS 8
437 #ifndef SPEC_LATEST_SUPPORTED
438 #define SPEC_LATEST_SUPPORTED 13
440 #ifndef AWAITING_TIMEOUT
441 #define AWAITING_TIMEOUT 20
443 #ifndef CIPHERS_LIST_STRING
444 #define CIPHERS_LIST_STRING "DEFAULT"
446 #ifndef LWS_SOMAXCONN
447 #define LWS_SOMAXCONN SOMAXCONN
450 #define MAX_WEBSOCKET_04_KEY_LEN 128
452 #ifndef SYSTEM_RANDOM_FILEPATH
453 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
456 enum lws_websocket_opcodes_07 {
457 LWSWSOPC_CONTINUATION = 0,
458 LWSWSOPC_TEXT_FRAME = 1,
459 LWSWSOPC_BINARY_FRAME = 2,
461 LWSWSOPC_NOSPEC__MUX = 7,
463 /* control extensions 8+ */
471 enum lws_connection_states {
473 LWSS_HTTP_ISSUING_FILE,
478 LWSS_CLIENT_HTTP_ESTABLISHED,
479 LWSS_CLIENT_UNCONNECTED,
480 LWSS_RETURNED_CLOSE_ALREADY,
481 LWSS_AWAITING_CLOSE_ACK,
482 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
485 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
486 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
487 LWSS_HTTP2_ESTABLISHED,
498 enum http_connection_type {
499 HTTP_CONNECTION_CLOSE,
500 HTTP_CONNECTION_KEEP_ALIVE
503 enum lws_pending_protocol_send {
505 LWS_PPS_HTTP2_MY_SETTINGS,
506 LWS_PPS_HTTP2_ACK_SETTINGS,
510 enum lws_rx_parse_state {
517 LWS_RXPS_04_FRAME_HDR_1,
518 LWS_RXPS_04_FRAME_HDR_LEN,
519 LWS_RXPS_04_FRAME_HDR_LEN16_2,
520 LWS_RXPS_04_FRAME_HDR_LEN16_1,
521 LWS_RXPS_04_FRAME_HDR_LEN64_8,
522 LWS_RXPS_04_FRAME_HDR_LEN64_7,
523 LWS_RXPS_04_FRAME_HDR_LEN64_6,
524 LWS_RXPS_04_FRAME_HDR_LEN64_5,
525 LWS_RXPS_04_FRAME_HDR_LEN64_4,
526 LWS_RXPS_04_FRAME_HDR_LEN64_3,
527 LWS_RXPS_04_FRAME_HDR_LEN64_2,
528 LWS_RXPS_04_FRAME_HDR_LEN64_1,
530 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
531 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
532 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
533 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
535 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
538 #define LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP 32
540 enum connection_mode {
542 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
543 LWSCM_PRE_WS_SERVING_ACCEPT,
550 /* transient, ssl delay hiding */
551 LWSCM_SSL_ACK_PENDING,
554 /* special internal types */
555 LWSCM_SERVER_LISTENER,
556 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
558 /* HTTP Client related */
559 LWSCM_HTTP_CLIENT = LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP,
560 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
561 LWSCM_WSCL_WAITING_CONNECT,
562 LWSCM_WSCL_WAITING_PROXY_REPLY,
563 LWSCM_WSCL_ISSUE_HANDSHAKE,
564 LWSCM_WSCL_ISSUE_HANDSHAKE2,
565 LWSCM_WSCL_ISSUE_HTTP_BODY,
566 LWSCM_WSCL_WAITING_SSL,
567 LWSCM_WSCL_WAITING_SERVER_REPLY,
568 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
569 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
571 /****** add new things just above ---^ ******/
577 LWS_RXFLOW_ALLOW = (1 << 0),
578 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
581 /* this is not usable directly by user code any more, lws_close_reason() */
582 #define LWS_WRITE_CLOSE 4
584 struct lws_protocols;
587 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
589 struct lws_io_watcher {
594 uv_poll_t uv_watcher;
596 struct lws_context *context;
599 struct lws_signal_watcher {
601 ev_signal ev_watcher;
604 uv_signal_t uv_watcher;
606 struct lws_context *context;
611 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
612 struct lws_fd_hashtable {
619 * This is totally opaque to code using the library. It's exported as a
620 * forward-reference pointer-only declaration; the user can use the pointer with
621 * other APIs to get information out of it.
624 struct lws_fragments {
627 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
631 * these are assigned from a pool held in the context.
632 * Both client and server mode uses them for http header analysis
635 struct allocated_headers {
636 struct lws *wsi; /* owner */
637 char *data; /* prepared by context init to point to dedicated storage */
639 * the randomly ordered fragments, indexed by frag_index and
640 * lws_fragments->nfrag for continuation.
642 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
645 * for each recognized token, frag_index says which frag[] his data
646 * starts in (0 means the token did not appear)
647 * the actual header data gets dumped as it comes in, into data[]
649 unsigned char frag_index[WSI_TOKEN_COUNT];
650 unsigned char rx[2048];
655 #ifndef LWS_NO_CLIENT
656 char initial_handshake_hash_base64[30];
659 unsigned char in_use;
664 * so we can have n connections being serviced simultaneously,
665 * these things need to be isolated per-thread.
668 struct lws_context_per_thread {
670 pthread_mutex_t lock;
672 struct lws_pollfd *fds;
673 #if defined(LWS_WITH_ESP8266)
674 struct lws **lws_vs_fds_index;
676 struct lws *rx_draining_ext_list;
677 struct lws *tx_draining_ext_list;
678 struct lws *timeout_list;
680 struct lws_context *context;
683 struct lws_cgi *cgi_list;
685 void *http_header_data;
686 struct allocated_headers *ah_pool;
687 struct lws *ah_wait_list;
688 int ah_wait_list_length;
689 #ifdef LWS_OPENSSL_SUPPORT
690 struct lws *pending_read_list; /* linked list */
692 #ifndef LWS_NO_SERVER
693 struct lws *wsi_listening;
695 #if defined(LWS_USE_LIBEV)
696 struct ev_loop *io_loop_ev;
698 #if defined(LWS_USE_LIBUV)
699 uv_loop_t *io_loop_uv;
700 uv_signal_t signals[8];
701 uv_timer_t uv_timeout_watcher;
704 #if defined(LWS_USE_LIBEV)
705 struct lws_io_watcher w_accept;
707 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
708 struct lws_signal_watcher w_sigint;
709 unsigned char ev_loop_foreign:1;
712 unsigned long count_conns;
714 * usable by anything in the service code, but only if the scope
715 * does not last longer than the service action (since next service
716 * of any socket can likewise use it and overwrite)
718 unsigned char *serv_buf;
722 lws_sockfd_type dummy_pipe_fds[2];
724 unsigned int fds_count;
726 short ah_count_in_use;
728 unsigned char lock_depth;
732 * virtual host -related context information
733 * vhostwide SSL context
738 * context -> vhost -> wsi
740 * incoming connection non-SSL vhost binding:
742 * listen socket -> wsi -> select vhost after first headers
744 * incoming connection SSL vhost binding:
746 * SSL SNI -> wsi -> bind after SSL negotiation
750 #if !defined(LWS_WITH_ESP8266)
751 char http_proxy_address[128];
752 char proxy_basic_auth_token[128];
754 #if defined(LWS_WITH_ESP8266)
755 /* listen sockets need a place to hang their hat */
758 struct lws_context *context;
759 struct lws_vhost *vhost_next;
760 const struct lws_http_mount *mount_list;
761 struct lws *lserv_wsi;
764 const struct lws_protocols *protocols;
765 void **protocol_vh_privs;
766 const struct lws_protocol_vhost_options *pvo;
767 const struct lws_protocol_vhost_options *headers;
768 struct lws **same_vh_protocol_list;
769 #ifdef LWS_OPENSSL_SUPPORT
771 SSL_CTX *ssl_client_ctx;
773 #ifndef LWS_NO_EXTENSIONS
774 const struct lws_extension *extensions;
776 unsigned long long rx, tx;
777 unsigned long conn, trans, ws_upgrades, http2_upgrades;
780 unsigned int http_proxy_port;
781 unsigned int options;
786 int keepalive_timeout;
787 #ifdef LWS_WITH_ACCESS_LOG
791 #ifdef LWS_OPENSSL_SUPPORT
793 int allow_non_ssl_on_ssl_port;
794 unsigned int user_supplied_ssl_ctx:1;
797 unsigned char default_protocol_index;
801 * the rest is managed per-context, that includes
803 * - processwide single fd -> wsi lookup
804 * - contextwide headers pool
808 time_t last_timeout_check_s;
809 time_t last_ws_ping_pong_check_s;
811 struct lws_plat_file_ops fops;
812 struct lws_context_per_thread pt[LWS_MAX_SMP];
814 /* different implementation between unix and windows */
815 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
817 #if defined(LWS_WITH_ESP8266)
818 struct espconn **connpool; /* .reverse points to the wsi */
823 struct lws **lws_lookup; /* fd to wsi */
826 struct lws_vhost *vhost_list;
827 struct lws_plugin *plugin_list;
828 const struct lws_token_limits *token_limits;
830 const char *server_string;
831 const struct lws_protocol_vhost_options *reject_service_keywords;
833 #if defined(LWS_USE_LIBEV)
834 lws_ev_signal_cb_t * lws_ev_sigint_cb;
836 #if defined(LWS_USE_LIBUV)
837 uv_signal_cb lws_uv_sigint_cb;
839 char canonical_hostname[128];
841 unsigned long worst_latency;
842 char worst_latency_info[256];
846 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
849 int started_with_parent;
853 #ifdef LWS_OPENSSL_SUPPORT
854 #define lws_ssl_anybody_has_buffered_read(w) \
855 (w->vhost->use_ssl && \
856 w->context->pt[(int)w->tsi].pending_read_list)
857 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
858 (/*c->use_ssl && */ \
859 c->pt[(int)t].pending_read_list)
861 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
862 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
864 int count_wsi_allocated;
865 int count_cgi_spawned;
866 unsigned int options;
867 unsigned int fd_limit_per_thread;
868 unsigned int timeout_secs;
869 unsigned int pt_serv_buf_size;
870 int max_http_header_data;
873 * set to the Thread ID that's doing the service loop just before entry
874 * to poll indicates service thread likely idling in poll()
875 * volatile because other threads may check it as part of processing
876 * for pollfd event change.
878 volatile int service_tid;
879 int service_tid_detected;
881 short max_http_header_pool;
883 short plugin_protocol_count;
884 short plugin_extension_count;
885 short server_string_len;
886 unsigned short ws_ping_pong_interval;
888 unsigned int being_destroyed:1;
889 unsigned int requested_kill:1;
890 unsigned int protocol_init_done:1;
893 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
894 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
897 lws_close_free_wsi_final(struct lws *wsi);
899 lws_libuv_closehandle(struct lws *wsi);
901 LWS_VISIBLE LWS_EXTERN int
902 lws_plat_plugins_init(struct lws_context * context, const char * const *d);
904 LWS_VISIBLE LWS_EXTERN int
905 lws_plat_plugins_destroy(struct lws_context * context);
908 lws_restart_ws_ping_pong_timer(struct lws *wsi);
911 lws_adopt_socket_vhost(struct lws_vhost *vh, lws_sockfd_type accept_fd);
915 LWS_EV_READ = (1 << 0),
916 LWS_EV_WRITE = (1 << 1),
917 LWS_EV_START = (1 << 2),
918 LWS_EV_STOP = (1 << 3),
920 LWS_EV_PREPARE_DELETION = (1 << 31),
923 #if defined(LWS_USE_LIBEV)
925 lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
927 lws_libev_io(struct lws *wsi, int flags);
929 lws_libev_init_fd_table(struct lws_context *context);
931 lws_libev_destroyloop(struct lws_context *context, int tsi);
933 lws_libev_run(const struct lws_context *context, int tsi);
934 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
935 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
937 #define lws_libev_accept(_a, _b) ((void) 0)
938 #define lws_libev_io(_a, _b) ((void) 0)
939 #define lws_libev_init_fd_table(_a) (0)
940 #define lws_libev_run(_a, _b) ((void) 0)
941 #define lws_libev_destroyloop(_a, _b) ((void) 0)
942 #define LWS_LIBEV_ENABLED(context) (0)
944 #define lws_feature_status_libev(_a) \
945 lwsl_notice("libev support not compiled in\n")
947 #define lws_feature_status_libev(_a)
951 #if defined(LWS_USE_LIBUV)
953 lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
955 lws_libuv_io(struct lws *wsi, int flags);
957 lws_libuv_init_fd_table(struct lws_context *context);
959 lws_libuv_run(const struct lws_context *context, int tsi);
961 lws_libuv_destroyloop(struct lws_context *context, int tsi);
962 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
963 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
965 #define lws_libuv_accept(_a, _b) ((void) 0)
966 #define lws_libuv_io(_a, _b) ((void) 0)
967 #define lws_libuv_init_fd_table(_a) (0)
968 #define lws_libuv_run(_a, _b) ((void) 0)
969 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
970 #define LWS_LIBUV_ENABLED(context) (0)
972 #define lws_feature_status_libuv(_a) \
973 lwsl_notice("libuv support not compiled in\n")
975 #define lws_feature_status_libuv(_a)
981 #define LWS_IPV6_ENABLED(vh) \
982 (!lws_check_opt(vh->context->options, LWS_SERVER_OPTION_DISABLE_IPV6) && \
983 !lws_check_opt(vh->options, LWS_SERVER_OPTION_DISABLE_IPV6))
985 #define LWS_IPV6_ENABLED(context) (0)
988 #ifdef LWS_USE_UNIX_SOCK
989 #define LWS_UNIX_SOCK_ENABLED(vhost) \
990 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
992 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
994 enum uri_path_states {
997 URIPS_SEEN_SLASH_DOT,
998 URIPS_SEEN_SLASH_DOT_DOT,
1001 enum uri_esc_states {
1004 URIES_SEEN_PERCENT_H1,
1007 /* notice that these union members:
1013 * all have a pointer to allocated_headers struct as their first member.
1015 * It means for allocated_headers access, the three union paths can all be
1016 * used interchangeably to access the same data
1020 #ifndef LWS_NO_CLIENT
1021 struct client_info_stash {
1031 struct _lws_header_related {
1032 /* MUST be first in struct */
1033 struct allocated_headers *ah;
1034 struct lws *ah_wait_list;
1035 unsigned char *preamble_rx;
1036 #ifndef LWS_NO_CLIENT
1037 struct client_info_stash *stash;
1039 unsigned int preamble_rx_len;
1040 enum uri_path_states ups;
1041 enum uri_esc_states ues;
1043 unsigned int current_token_limit;
1044 #ifndef LWS_NO_CLIENT
1045 unsigned short c_port;
1048 char post_literal_equal;
1049 unsigned char parser_state; /* enum lws_token_indexes */
1053 struct _lws_http_mode_related {
1054 /* MUST be first in struct */
1055 struct allocated_headers *ah; /* mirroring _lws_header_related */
1056 struct lws *ah_wait_list;
1057 unsigned char *preamble_rx;
1058 #ifndef LWS_NO_CLIENT
1059 struct client_info_stash *stash;
1061 unsigned int preamble_rx_len;
1062 struct lws *new_wsi_list;
1063 unsigned long filepos;
1064 unsigned long filelen;
1067 enum http_version request_version;
1068 enum http_connection_type connection_type;
1069 unsigned int content_length;
1070 unsigned int content_remain;
1073 #ifdef LWS_USE_HTTP2
1075 enum lws_http2_settings {
1076 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
1077 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
1078 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
1079 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
1080 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
1081 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
1083 LWS_HTTP2_SETTINGS__COUNT /* always last */
1086 enum lws_http2_wellknown_frame_types {
1087 LWS_HTTP2_FRAME_TYPE_DATA,
1088 LWS_HTTP2_FRAME_TYPE_HEADERS,
1089 LWS_HTTP2_FRAME_TYPE_PRIORITY,
1090 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
1091 LWS_HTTP2_FRAME_TYPE_SETTINGS,
1092 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
1093 LWS_HTTP2_FRAME_TYPE_PING,
1094 LWS_HTTP2_FRAME_TYPE_GOAWAY,
1095 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
1096 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
1098 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
1101 enum lws_http2_flags {
1102 LWS_HTTP2_FLAG_END_STREAM = 1,
1103 LWS_HTTP2_FLAG_END_HEADERS = 4,
1104 LWS_HTTP2_FLAG_PADDED = 8,
1105 LWS_HTTP2_FLAG_PRIORITY = 0x20,
1107 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
1110 #define LWS_HTTP2_STREAM_ID_MASTER 0
1111 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
1112 #define LWS_HTTP2_SETTINGS_LENGTH 6
1114 struct http2_settings {
1115 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
1118 enum http2_hpack_state {
1120 /* optional before first header block */
1122 HKPS_OPT_E_DEPENDENCY,
1135 /* optional after last header block */
1136 HKPS_OPT_DISCARD_PADDING,
1139 enum http2_hpack_type {
1141 HPKT_INDEXED_HDR_6_VALUE_INCR,
1142 HPKT_LITERAL_HDR_VALUE_INCR,
1143 HPKT_INDEXED_HDR_4_VALUE,
1144 HPKT_LITERAL_HDR_VALUE,
1148 struct hpack_dt_entry {
1149 int token; /* additions that don't map to a token are ignored */
1154 struct hpack_dynamic_table {
1155 struct hpack_dt_entry *entries;
1163 struct _lws_http2_related {
1165 * having this first lets us also re-use all HTTP union code
1166 * and in turn, http_mode_related has allocated headers in right
1167 * place so we can use the header apis on the wsi directly still
1169 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1171 struct http2_settings my_settings;
1172 struct http2_settings peer_settings;
1174 struct lws *parent_wsi;
1175 struct lws *next_child_wsi;
1177 struct hpack_dynamic_table *hpack_dyn_table;
1178 struct lws *stream_wsi;
1179 unsigned char ping_payload[8];
1180 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1183 unsigned int length;
1184 unsigned int stream_id;
1185 enum http2_hpack_state hpack;
1186 enum http2_hpack_type hpack_type;
1187 unsigned int header_index;
1188 unsigned int hpack_len;
1189 unsigned int hpack_e_dep;
1191 unsigned int my_stream_id;
1192 unsigned int child_count;
1195 unsigned int END_STREAM:1;
1196 unsigned int END_HEADERS:1;
1197 unsigned int send_END_STREAM:1;
1198 unsigned int GOING_AWAY;
1199 unsigned int requested_POLLOUT:1;
1200 unsigned int waiting_tx_credit:1;
1201 unsigned int huff:1;
1202 unsigned int value:1;
1204 unsigned short round_robin_POLLOUT;
1205 unsigned short count_POLLOUT_children;
1206 unsigned short hpack_pos;
1209 unsigned char flags;
1210 unsigned char frame_state;
1211 unsigned char padding;
1212 unsigned char hpack_m;
1213 unsigned char initialized;
1216 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1220 struct _lws_websocket_related {
1221 /* cheapest way to deal with ah overlap with ws union transition */
1222 struct _lws_header_related hdr;
1224 unsigned int rx_ubuf_alloc;
1225 struct lws *rx_draining_ext_list;
1226 struct lws *tx_draining_ext_list;
1227 time_t time_next_ping_check;
1228 size_t rx_packet_length;
1229 unsigned int rx_ubuf_head;
1230 unsigned char mask[4];
1231 /* Also used for close content... control opcode == < 128 */
1232 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1234 unsigned char ping_payload_len;
1235 unsigned char mask_idx;
1236 unsigned char opcode;
1238 unsigned char rsv_first_msg;
1239 /* zero if no info, or length including 2-byte close code */
1240 unsigned char close_in_ping_buffer_len;
1242 unsigned char stashed_write_type;
1243 unsigned char tx_draining_stashed_wp;
1245 unsigned int final:1;
1246 unsigned int frame_is_binary:1;
1247 unsigned int all_zero_nonce:1;
1248 unsigned int this_frame_masked:1;
1249 unsigned int inside_frame:1; /* next write will be more of frame */
1250 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1251 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1252 unsigned int ping_pending_flag:1;
1253 unsigned int continuation_possible:1;
1254 unsigned int owed_a_fin:1;
1255 unsigned int check_utf8:1;
1256 unsigned int defeat_check_utf8:1;
1257 unsigned int pmce_compressed_message:1;
1258 unsigned int stashed_write_pending:1;
1259 unsigned int rx_draining_ext:1;
1260 unsigned int tx_draining_ext:1;
1261 unsigned int send_check_ping:1;
1266 /* wsi who is master of the cgi points to an lws_cgi */
1269 struct lws_cgi *cgi_list;
1270 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1271 struct lws *wsi; /* owner */
1272 unsigned long content_length;
1273 unsigned long content_length_seen;
1277 unsigned int being_closed:1;
1281 signed char char_to_hex(const char c);
1283 #ifndef LWS_NO_CLIENT
1284 enum lws_chunk_parser {
1295 #ifdef LWS_WITH_ACCESS_LOG
1296 struct lws_access_log {
1307 /* members with mutually exclusive lifetimes are unionized */
1310 struct _lws_http_mode_related http;
1311 #ifdef LWS_USE_HTTP2
1312 struct _lws_http2_related http2;
1314 struct _lws_header_related hdr;
1315 struct _lws_websocket_related ws;
1318 /* lifetime members */
1320 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1321 struct lws_io_watcher w_read;
1323 #if defined(LWS_USE_LIBEV)
1324 struct lws_io_watcher w_write;
1326 time_t pending_timeout_limit;
1330 struct lws_context *context;
1331 struct lws_vhost *vhost;
1332 struct lws *parent; /* points to parent, if any */
1333 struct lws *child_list; /* points to first child */
1334 struct lws *sibling_list; /* subsequent children at same level */
1336 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1338 const struct lws_protocols *protocol;
1339 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1340 struct lws *timeout_list;
1341 struct lws **timeout_list_prev;
1342 #ifdef LWS_WITH_ACCESS_LOG
1343 struct lws_access_log access_log;
1346 /* rxflow handling */
1347 unsigned char *rxflow_buffer;
1348 /* truncated send handling */
1349 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1351 #if defined (LWS_WITH_ESP8266)
1353 unsigned short prem_rx_size, prem_rx_pos;
1356 #ifndef LWS_NO_EXTENSIONS
1357 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1358 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1360 #ifdef LWS_OPENSSL_SUPPORT
1362 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1365 struct lws *pending_read_list_prev, *pending_read_list_next;
1367 #ifdef LWS_WITH_HTTP_PROXY
1368 struct lws_rewrite *rw;
1371 unsigned long action_start;
1372 unsigned long latency_start;
1375 lws_sockfd_type sock;
1378 int position_in_fds_table;
1381 unsigned int trunc_alloc_len; /* size of malloc */
1382 unsigned int trunc_offset; /* where we are in terms of spilling */
1383 unsigned int trunc_len; /* how much is buffered */
1384 #ifndef LWS_NO_CLIENT
1385 int chunk_remaining;
1387 unsigned int cache_secs;
1389 unsigned int hdr_parsing_completed:1;
1390 unsigned int http2_substream:1;
1391 unsigned int listener:1;
1392 unsigned int user_space_externally_allocated:1;
1393 unsigned int socket_is_permanently_unusable:1;
1394 unsigned int rxflow_change_to:2;
1395 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1396 unsigned int conn_stat_done:1;
1397 unsigned int cache_reuse:1;
1398 unsigned int cache_revalidate:1;
1399 unsigned int cache_intermediaries:1;
1400 unsigned int favoured_pollin:1;
1401 unsigned int sending_chunked:1;
1402 unsigned int already_did_cce:1;
1403 unsigned int told_user_closed:1;
1404 #if defined(LWS_WITH_ESP8266)
1405 unsigned int pending_send_completion:3;
1406 unsigned int close_is_pending_send_completion:1;
1408 #ifdef LWS_WITH_ACCESS_LOG
1409 unsigned int access_log_pending:1;
1411 #ifndef LWS_NO_CLIENT
1412 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1413 unsigned int chunked:1; /* if the clientside connection is chunked */
1414 unsigned int client_rx_avail:1;
1415 unsigned int client_http_body_pending:1;
1417 #ifdef LWS_WITH_HTTP_PROXY
1418 unsigned int perform_rewrite:1;
1420 #ifndef LWS_NO_EXTENSIONS
1421 unsigned int extension_data_pending:1;
1423 #ifdef LWS_OPENSSL_SUPPORT
1424 unsigned int use_ssl:3;
1425 unsigned int upgraded:1;
1428 unsigned int sock_send_blocking:1;
1430 #ifdef LWS_OPENSSL_SUPPORT
1431 unsigned int redirect_to_https:1;
1435 #ifndef LWS_NO_EXTENSIONS
1436 unsigned char count_act_ext;
1438 unsigned char ietf_spec_revision;
1439 char mode; /* enum connection_mode */
1440 char state; /* enum lws_connection_states */
1441 char state_pre_close;
1442 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1443 char rx_frame_type; /* enum lws_write_protocol */
1444 char pending_timeout; /* enum pending_timeout */
1445 char pps; /* enum lws_pending_protocol_send */
1446 char tsi; /* thread service index we belong to */
1447 char protocol_interpret_idx;
1449 char cgi_channel; /* which of stdin/out/err */
1452 #ifndef LWS_NO_CLIENT
1453 char chunk_parser; /* enum lws_chunk_parser */
1455 #if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT)
1456 char reason_bf; /* internal writeable callback reason bitfield */
1460 LWS_EXTERN int log_level;
1463 lws_socket_bind(struct lws_vhost *vhost, int sockfd, int port,
1467 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1470 remove_wsi_socket_from_fds(struct lws *wsi);
1472 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1476 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1477 int ret, int completion) {
1479 (void)context; (void)wsi; (void)action; (void)ret;
1484 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1485 do { (void)context; (void)wsi; } while (0);
1488 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1490 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1491 int ret, int completion);
1495 lws_set_protocol_write_pending(struct lws *wsi,
1496 enum lws_pending_protocol_send pend);
1497 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1498 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1500 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1501 lws_parse(struct lws *wsi, unsigned char c);
1503 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1504 lws_http_action(struct lws *wsi);
1507 lws_b64_selftest(void);
1510 lws_service_flag_pending(struct lws_context *context, int tsi);
1512 #if defined(_WIN32) || defined(MBED_OPERATORS) || defined(LWS_WITH_ESP8266)
1513 LWS_EXTERN struct lws *
1514 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1517 insert_wsi(struct lws_context *context, struct lws *wsi);
1520 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1522 #define wsi_from_fd(A,B) A->lws_lookup[B]
1523 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1524 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1527 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1528 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1530 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1531 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1534 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1535 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1537 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1538 lws_client_connect_2(struct lws *wsi);
1540 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1541 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1542 const char *path, const char *host);
1544 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1545 lws_create_new_server_wsi(struct lws_vhost *vhost);
1547 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1548 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1551 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1553 LWS_EXTERN struct lws *
1554 lws_client_connect_via_info2(struct lws *wsi);
1560 #ifndef LWS_NO_EXTENSIONS
1562 lws_context_init_extensions(struct lws_context_creation_info *info,
1563 struct lws_context *context);
1565 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1566 void *v, size_t len);
1569 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1571 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1572 void *arg, int len);
1575 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1576 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1577 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1578 #define lws_issue_raw_ext_access lws_issue_raw
1579 #define lws_context_init_extensions(_a, _b)
1582 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1583 lws_client_interpret_server_handshake(struct lws *wsi);
1585 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1586 lws_rx_sm(struct lws *wsi, unsigned char c);
1589 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1591 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1592 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1595 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1597 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1598 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1599 enum lws_callback_reasons reason, void *user,
1600 void *in, size_t len);
1601 #ifdef LWS_USE_HTTP2
1602 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1603 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1605 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1606 unsigned char *buf, int len);
1607 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1609 lws_http2_parser(struct lws *wsi, unsigned char c);
1610 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1612 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1613 unsigned int sid, unsigned int len,
1614 unsigned char *buf);
1615 LWS_EXTERN struct lws *
1616 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1617 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1620 lws_add_http2_header_by_name(struct lws *wsi,
1621 const unsigned char *name,
1622 const unsigned char *value, int length,
1623 unsigned char **p, unsigned char *end);
1625 lws_add_http2_header_by_token(struct lws *wsi,
1626 enum lws_token_indexes token,
1627 const unsigned char *value, int length,
1628 unsigned char **p, unsigned char *end);
1630 lws_add_http2_header_status(struct lws *wsi,
1631 unsigned int code, unsigned char **p,
1632 unsigned char *end);
1634 void lws_http2_configure_if_upgraded(struct lws *wsi);
1636 #define lws_http2_configure_if_upgraded(x)
1640 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1643 lws_plat_check_connection_error(struct lws *wsi);
1645 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1646 lws_header_table_attach(struct lws *wsi, int autoservice);
1649 lws_header_table_detach(struct lws *wsi, int autoservice);
1652 lws_header_table_reset(struct lws *wsi, int autoservice);
1654 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1655 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1657 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1658 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1660 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1661 lws_ensure_user_space(struct lws *wsi);
1664 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1666 #ifndef LWS_NO_SERVER
1667 int lws_context_init_server(struct lws_context_creation_info *info,
1668 struct lws_vhost *vhost);
1669 LWS_EXTERN struct lws_vhost *
1670 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1672 handshake_0405(struct lws_context *context, struct lws *wsi);
1673 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1674 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1676 lws_server_get_canonical_hostname(struct lws_context *context,
1677 struct lws_context_creation_info *info);
1679 #define lws_context_init_server(_a, _b) (0)
1680 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1681 #define lws_server_get_canonical_hostname(_a, _b)
1684 #ifndef LWS_NO_DAEMONIZE
1685 LWS_EXTERN int get_daemonize_pid();
1687 #define get_daemonize_pid() (0)
1690 #if !defined(MBED_OPERATORS) && !defined(LWS_WITH_ESP8266)
1691 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1692 interface_to_sa(struct lws_vhost *vh, const char *ifname,
1693 struct sockaddr_in *addr, size_t addrlen);
1695 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1697 enum lws_ssl_capable_status {
1698 LWS_SSL_CAPABLE_ERROR = -1,
1699 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1702 #ifndef LWS_OPENSSL_SUPPORT
1703 #define LWS_SSL_ENABLED(context) (0)
1704 #define lws_context_init_server_ssl(_a, _b) (0)
1705 #define lws_ssl_destroy(_a)
1706 #define lws_context_init_http2_ssl(_a)
1707 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1708 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1709 #define lws_ssl_pending lws_ssl_pending_no_ssl
1710 #define lws_server_socket_service_ssl(_b, _c) (0)
1711 #define lws_ssl_close(_a) (0)
1712 #define lws_ssl_context_destroy(_a)
1713 #define lws_ssl_SSL_CTX_destroy(_a)
1714 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1715 #define lws_context_init_ssl_library(_a)
1717 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1718 LWS_EXTERN int openssl_websocket_private_data_index;
1719 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1720 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1721 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1722 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1723 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1724 lws_ssl_pending(struct lws *wsi);
1726 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1727 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1728 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1730 lws_ssl_close(struct lws *wsi);
1732 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1734 lws_ssl_context_destroy(struct lws_context *context);
1736 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1738 lws_ssl_client_bio_create(struct lws *wsi);
1740 lws_ssl_client_connect1(struct lws *wsi);
1742 lws_ssl_client_connect2(struct lws *wsi);
1744 lws_ssl_elaborate_error(void);
1745 #ifndef LWS_NO_SERVER
1747 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1748 struct lws_vhost *vhost);
1750 #define lws_context_init_server_ssl(_a, _b) (0)
1753 lws_ssl_destroy(struct lws_vhost *vhost);
1757 #ifdef LWS_USE_HTTP2
1759 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1761 #define lws_context_init_http2_ssl(_a)
1766 static LWS_INLINE void
1767 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1769 pthread_mutex_init(&pt->lock, NULL);
1772 static LWS_INLINE void
1773 lws_pt_mutex_destroy(struct lws_context_per_thread *pt)
1775 pthread_mutex_destroy(&pt->lock);
1778 static LWS_INLINE void
1779 lws_pt_lock(struct lws_context_per_thread *pt)
1781 if (!pt->lock_depth++)
1782 pthread_mutex_lock(&pt->lock);
1785 static LWS_INLINE void
1786 lws_pt_unlock(struct lws_context_per_thread *pt)
1788 if (!(--pt->lock_depth))
1789 pthread_mutex_unlock(&pt->lock);
1792 #define lws_pt_mutex_init(_a) (void)(_a)
1793 #define lws_pt_mutex_destroy(_a) (void)(_a)
1794 #define lws_pt_lock(_a) (void)(_a)
1795 #define lws_pt_unlock(_a) (void)(_a)
1798 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1799 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1801 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1802 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1804 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1805 lws_ssl_pending_no_ssl(struct lws *wsi);
1807 #ifdef LWS_WITH_HTTP_PROXY
1808 struct lws_rewrite {
1809 hubbub_parser *parser;
1810 hubbub_parser_optparams params;
1811 const char *from, *to;
1812 int from_len, to_len;
1813 unsigned char *p, *end;
1816 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1821 return strncmp((const char *)s->ptr, p, len);
1823 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1824 LWS_EXTERN struct lws_rewrite *
1825 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1827 lws_rewrite_destroy(struct lws_rewrite *r);
1829 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1832 #ifndef LWS_NO_CLIENT
1833 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1835 struct lws_pollfd *pollfd);
1836 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1837 lws_http_transaction_completed_client(struct lws *wsi);
1838 #ifdef LWS_OPENSSL_SUPPORT
1840 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1841 struct lws_vhost *vhost);
1843 #define lws_context_init_client_ssl(_a, _b) (0)
1845 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1846 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1848 lws_decode_ssl_error(void);
1850 #define lws_context_init_client_ssl(_a, _b) (0)
1851 #define lws_handshake_client(_a, _b, _c) (0)
1855 _lws_rx_flow_control(struct lws *wsi);
1858 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1860 #ifndef LWS_NO_SERVER
1862 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1863 struct lws_pollfd *pollfd);
1865 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1867 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1869 #define lws_server_socket_service(_a, _b, _c) (0)
1870 #define lws_handshake_server(_a, _b, _c) (0)
1871 #define _lws_server_listen_accept_flow_control(a, b) (0)
1874 #ifdef LWS_WITH_ACCESS_LOG
1876 lws_access_log(struct lws *wsi);
1878 #define lws_access_log(_a)
1882 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1885 lws_protocol_init(struct lws_context *context);
1888 lws_bind_protocol(struct lws *wsi, const struct lws_protocols *p);
1890 const struct lws_http_mount *
1891 lws_find_mount(struct lws *wsi, const char *uri_ptr, int uri_len);
1897 lws_realloc(void *ptr, size_t size);
1899 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1900 lws_zalloc(size_t size);
1902 #define lws_malloc(S) lws_realloc(NULL, S)
1903 #define lws_free(P) lws_realloc(P, 0)
1904 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1908 lws_plat_delete_socket_from_fds(struct lws_context *context,
1909 struct lws *wsi, int m);
1911 lws_plat_insert_socket_into_fds(struct lws_context *context,
1914 lws_plat_service_periodic(struct lws_context *context);
1917 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1918 struct lws_pollfd *pfd);
1920 lws_plat_context_early_init(void);
1922 lws_plat_context_early_destroy(struct lws_context *context);
1924 lws_plat_context_late_destroy(struct lws_context *context);
1926 lws_poll_listen_fd(struct lws_pollfd *fd);
1928 lws_plat_service(struct lws_context *context, int timeout_ms);
1929 LWS_EXTERN LWS_VISIBLE int
1930 _lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1932 lws_plat_init(struct lws_context *context,
1933 struct lws_context_creation_info *info);
1935 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1936 LWS_EXTERN unsigned long long
1937 time_in_microseconds(void);
1938 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1939 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1941 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1942 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);