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>
42 #if defined(LWS_WITH_ESP32)
43 #define MSG_NOSIGNAL 0
47 #if defined(LWS_WITH_ESP8266)
48 #include <user_interface.h>
51 /* rom-provided stdc functions for free, ensure use these instead of libc ones */
53 int ets_vsprintf(char *str, const char *format, va_list argptr);
54 int ets_vsnprintf(char *buffer, size_t sizeOfBuffer, const char *format, va_list argptr);
55 int ets_snprintf(char *str, size_t size, const char *format, ...);
56 int ets_sprintf(char *str, const char *format, ...);
57 int os_printf_plus(const char *format, ...);
61 void *pvPortMalloc(size_t s, const char *f, int line);
62 #define malloc(s) pvPortMalloc(s, "", 0)
63 void *pvPortRealloc(void *p, size_t s, const char *f, int line);
64 #define realloc(p, s) pvPortRealloc(p, s, "", 0)
65 void vPortFree(void *p, const char *f, int line);
66 #define free(p) vPortFree(p, "", 0)
68 void *ets_memcpy(void *dest, const void *src, size_t n);
69 #define memcpy ets_memcpy
70 void *ets_memset(void *dest, int v, size_t n);
71 #define memset ets_memset
72 char *ets_strcpy(char *dest, const char *src);
73 #define strcpy ets_strcpy
74 char *ets_strncpy(char *dest, const char *src, size_t n);
75 #define strncpy ets_strncpy
76 char *ets_strstr(const char *haystack, const char *needle);
77 #define strstr ets_strstr
78 int ets_strcmp(const char *s1, const char *s2);
79 int ets_strncmp(const char *s1, const char *s2, size_t n);
80 #define strcmp ets_strcmp
81 #define strncmp ets_strncmp
82 size_t ets_strlen(const char *s);
83 #define strlen ets_strlen
84 void *ets_memmove(void *dest, const void *src, size_t n);
85 #define memmove ets_memmove
86 char *ets_strchr(const char *s, int c);
87 #define strchr_ets_strchr
99 #ifdef LWS_HAVE_SYS_STAT_H
100 #include <sys/stat.h>
103 #if defined(WIN32) || defined(_WIN32)
104 #if (WINVER < 0x0501)
107 #define WINVER 0x0501
108 #define _WIN32_WINNT WINVER
110 #define LWS_NO_DAEMONIZE
111 #define LWS_ERRNO WSAGetLastError()
112 #define LWS_EAGAIN WSAEWOULDBLOCK
113 #define LWS_EALREADY WSAEALREADY
114 #define LWS_EINPROGRESS WSAEINPROGRESS
115 #define LWS_EINTR WSAEINTR
116 #define LWS_EISCONN WSAEISCONN
117 #define LWS_EWOULDBLOCK WSAEWOULDBLOCK
118 #define MSG_NOSIGNAL 0
119 #define SHUT_RDWR SD_BOTH
120 #define SOL_TCP IPPROTO_TCP
121 #define SHUT_WR SD_SEND
123 #define compatible_close(fd) closesocket(fd)
124 #define lws_set_blocking_send(wsi) wsi->sock_send_blocking = 1
125 #define lws_socket_is_valid(x) (!!x)
126 #define LWS_SOCK_INVALID 0
127 #include <winsock2.h>
128 #include <ws2tcpip.h>
131 #ifdef LWS_HAVE_IN6ADDR_H
138 #define __func__ __FUNCTION__
141 #ifdef LWS_HAVE__VSNPRINTF
142 #define vsnprintf _vsnprintf
145 /* we don't have an implementation for this on windows... */
146 int kill(int pid, int sig);
152 #else /* not windows --> */
157 #include <sys/types.h>
164 #ifdef LWS_WITH_ESP8266
166 #define vsnprintf ets_vsnprintf
167 #define snprintf ets_snprintf
168 #define sprintf ets_sprintf
170 int kill(int pid, int sig);
173 #include <sys/socket.h>
175 #ifdef LWS_WITH_HTTP_PROXY
176 #include <hubbub/hubbub.h>
177 #include <hubbub/parser.h>
179 #if defined(LWS_BUILTIN_GETIFADDRS)
180 #include <getifaddrs.h>
182 #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32)
186 #if defined (__ANDROID__)
188 #include <sys/resource.h>
189 #elif defined (__sun)
192 #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32)
193 #include <sys/syslog.h>
197 #if !defined(LWS_WITH_ESP8266) && !defined(LWS_WITH_ESP32)
198 #include <sys/mman.h>
200 #include <netinet/in.h>
201 #include <netinet/tcp.h>
202 #include <arpa/inet.h>
211 #ifdef LWS_USE_LIBEVENT
212 #include <event2/event.h>
216 #ifdef LWS_HAVE_SYS_PRCTL_H
217 #include <sys/prctl.h>
221 #include <sys/time.h>
223 #define LWS_ERRNO errno
224 #define LWS_EAGAIN EAGAIN
225 #define LWS_EALREADY EALREADY
226 #define LWS_EINPROGRESS EINPROGRESS
227 #define LWS_EINTR EINTR
228 #define LWS_EISCONN EISCONN
229 #define LWS_EWOULDBLOCK EWOULDBLOCK
231 #define lws_set_blocking_send(wsi)
233 #if defined(LWS_WITH_ESP8266)
234 #define lws_socket_is_valid(x) ((x) != NULL)
235 #define LWS_SOCK_INVALID (NULL)
238 lws_plat_get_peer_simple(struct lws *wsi, char *name, int namelen);
240 #define lws_socket_is_valid(x) (x >= 0)
241 #define LWS_SOCK_INVALID (-1)
245 #ifndef LWS_HAVE_BZERO
247 #define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
251 #ifndef LWS_HAVE_STRERROR
252 #define strerror(x) ""
255 #ifdef LWS_OPENSSL_SUPPORT
258 #ifdef USE_OLD_CYASSL
259 #include <cyassl/openssl/ssl.h>
260 #include <cyassl/error-ssl.h>
262 #include <wolfssl/openssl/ssl.h>
263 #include <wolfssl/error-ssl.h>
264 #define OPENSSL_NO_TLSEXT
265 #endif /* not USE_OLD_CYASSL */
267 #include <openssl/ssl.h>
268 #if !defined(LWS_WITH_ESP32)
269 #include <openssl/evp.h>
270 #include <openssl/err.h>
271 #include <openssl/md5.h>
272 #include <openssl/sha.h>
273 #ifdef LWS_HAVE_OPENSSL_ECDH_H
274 #include <openssl/ecdh.h>
276 #include <openssl/x509v3.h>
278 #if (OPENSSL_VERSION_NUMBER < 0x0009080afL)
279 /* later openssl defines this to negate the presence of tlsext... but it was only
280 * introduced at 0.9.8j. Earlier versions don't know it exists so don't
281 * define it... making it look like the feature exists...
283 #define OPENSSL_NO_TLSEXT
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(WIN32) || defined(_WIN32)
295 #include <gettimeofday.h>
298 #if defined(LWS_WITH_ESP8266)
299 #undef compatible_close
300 #define compatible_close(fd) { fd->state=ESPCONN_CLOSE; espconn_delete(fd); }
302 esp8266_create_tcp_stream_socket(void);
304 esp8266_tcp_stream_bind(lws_sockfd_type fd, int port, struct lws *wsi);
306 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
308 #ifndef LITTLE_ENDIAN
309 #define LITTLE_ENDIAN 1234
312 #define BYTE_ORDER LITTLE_ENDIAN
317 #if defined(WIN32) || defined(_WIN32)
320 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
322 #ifndef LITTLE_ENDIAN
323 #define LITTLE_ENDIAN 1234
326 #define BYTE_ORDER LITTLE_ENDIAN
329 typedef unsigned __int64 u_int64_t;
335 #define __P(protos) protos
337 #define __P(protos) ()
343 #include <sys/stat.h>
344 #include <sys/time.h>
346 #if defined(__APPLE__)
347 #include <machine/endian.h>
348 #elif defined(__FreeBSD__)
349 #include <sys/endian.h>
350 #elif defined(__linux__)
359 #include <gulliver.h>
360 #if defined(__LITTLEENDIAN__)
361 #define BYTE_ORDER __LITTLEENDIAN__
362 #define LITTLE_ENDIAN __LITTLEENDIAN__
363 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
365 #if defined(__BIGENDIAN__)
366 #define BYTE_ORDER __BIGENDIAN__
367 #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
368 #define BIG_ENDIAN __BIGENDIAN__
372 #if defined(__sun) && defined(__GNUC__)
374 #include <arpa/nameser_compat.h>
376 #if !defined (BYTE_ORDER)
377 # define BYTE_ORDER __BYTE_ORDER__
380 #if !defined(LITTLE_ENDIAN)
381 # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
384 #if !defined(BIG_ENDIAN)
385 # define BIG_ENDIAN __ORDER_BIG_ENDIAN__
388 #endif /* sun + GNUC */
390 #if !defined(BYTE_ORDER)
391 # define BYTE_ORDER __BYTE_ORDER
393 #if !defined(LITTLE_ENDIAN)
394 # define LITTLE_ENDIAN __LITTLE_ENDIAN
396 #if !defined(BIG_ENDIAN)
397 # define BIG_ENDIAN __BIG_ENDIAN
403 * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
404 * but happily have something equivalent in the SO_NOSIGPIPE flag.
407 #define MSG_NOSIGNAL SO_NOSIGPIPE
411 * Solaris 11.X only supports POSIX 2001, MSG_NOSIGNAL appears in
415 #define MSG_NOSIGNAL 0
419 #ifndef FD_HASHTABLE_MODULUS
420 #define FD_HASHTABLE_MODULUS 32
424 #ifndef LWS_DEF_HEADER_LEN
425 #define LWS_DEF_HEADER_LEN 4096
427 #ifndef LWS_DEF_HEADER_POOL
428 #define LWS_DEF_HEADER_POOL 4
430 #ifndef LWS_MAX_PROTOCOLS
431 #define LWS_MAX_PROTOCOLS 5
433 #ifndef LWS_MAX_EXTENSIONS_ACTIVE
434 #define LWS_MAX_EXTENSIONS_ACTIVE 2
436 #ifndef LWS_MAX_EXT_OFFERS
437 #define LWS_MAX_EXT_OFFERS 8
439 #ifndef SPEC_LATEST_SUPPORTED
440 #define SPEC_LATEST_SUPPORTED 13
442 #ifndef AWAITING_TIMEOUT
443 #define AWAITING_TIMEOUT 20
445 #ifndef CIPHERS_LIST_STRING
446 #define CIPHERS_LIST_STRING "DEFAULT"
448 #ifndef LWS_SOMAXCONN
449 #define LWS_SOMAXCONN SOMAXCONN
452 #define MAX_WEBSOCKET_04_KEY_LEN 128
454 #ifndef SYSTEM_RANDOM_FILEPATH
455 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
458 enum lws_websocket_opcodes_07 {
459 LWSWSOPC_CONTINUATION = 0,
460 LWSWSOPC_TEXT_FRAME = 1,
461 LWSWSOPC_BINARY_FRAME = 2,
463 LWSWSOPC_NOSPEC__MUX = 7,
465 /* control extensions 8+ */
473 enum lws_connection_states {
475 LWSS_HTTP_ISSUING_FILE,
480 LWSS_CLIENT_HTTP_ESTABLISHED,
481 LWSS_CLIENT_UNCONNECTED,
482 LWSS_RETURNED_CLOSE_ALREADY,
483 LWSS_AWAITING_CLOSE_ACK,
484 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
487 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
488 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
489 LWSS_HTTP2_ESTABLISHED,
500 enum http_connection_type {
501 HTTP_CONNECTION_CLOSE,
502 HTTP_CONNECTION_KEEP_ALIVE
505 enum lws_pending_protocol_send {
507 LWS_PPS_HTTP2_MY_SETTINGS,
508 LWS_PPS_HTTP2_ACK_SETTINGS,
512 enum lws_rx_parse_state {
519 LWS_RXPS_04_FRAME_HDR_1,
520 LWS_RXPS_04_FRAME_HDR_LEN,
521 LWS_RXPS_04_FRAME_HDR_LEN16_2,
522 LWS_RXPS_04_FRAME_HDR_LEN16_1,
523 LWS_RXPS_04_FRAME_HDR_LEN64_8,
524 LWS_RXPS_04_FRAME_HDR_LEN64_7,
525 LWS_RXPS_04_FRAME_HDR_LEN64_6,
526 LWS_RXPS_04_FRAME_HDR_LEN64_5,
527 LWS_RXPS_04_FRAME_HDR_LEN64_4,
528 LWS_RXPS_04_FRAME_HDR_LEN64_3,
529 LWS_RXPS_04_FRAME_HDR_LEN64_2,
530 LWS_RXPS_04_FRAME_HDR_LEN64_1,
532 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
533 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
534 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
535 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
537 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
540 #define LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP 32
542 enum connection_mode {
544 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
545 LWSCM_PRE_WS_SERVING_ACCEPT,
552 /* transient, ssl delay hiding */
553 LWSCM_SSL_ACK_PENDING,
555 /* as above, but complete into LWSCM_RAW */
556 LWSCM_SSL_ACK_PENDING_RAW,
559 /* special internal types */
560 LWSCM_SERVER_LISTENER,
561 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
562 LWSCM_RAW, /* raw with bulk handling */
563 LWSCM_RAW_FILEDESC, /* raw without bulk handling */
565 /* HTTP Client related */
566 LWSCM_HTTP_CLIENT = LWSCM_FLAG_IMPLIES_CALLBACK_CLOSED_CLIENT_HTTP,
567 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
568 LWSCM_WSCL_WAITING_CONNECT,
569 LWSCM_WSCL_WAITING_PROXY_REPLY,
570 LWSCM_WSCL_ISSUE_HANDSHAKE,
571 LWSCM_WSCL_ISSUE_HANDSHAKE2,
572 LWSCM_WSCL_ISSUE_HTTP_BODY,
573 LWSCM_WSCL_WAITING_SSL,
574 LWSCM_WSCL_WAITING_SERVER_REPLY,
575 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
576 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
577 LWSCM_WSCL_WAITING_SOCKS_GREETING_REPLY,
578 LWSCM_WSCL_WAITING_SOCKS_CONNECT_REPLY,
579 LWSCM_WSCL_WAITING_SOCKS_AUTH_REPLY,
581 /****** add new things just above ---^ ******/
586 /* enums of socks version */
592 /* enums of subnegotiation version */
593 enum socks_subnegotiation_version {
594 SOCKS_SUBNEGOTIATION_VERSION_1 = 1,
597 /* enums of socks commands */
599 SOCKS_COMMAND_CONNECT = 1,
600 SOCKS_COMMAND_BIND = 2,
601 SOCKS_COMMAND_UDP_ASSOCIATE = 3
604 /* enums of socks address type */
607 SOCKS_ATYP_DOMAINNAME = 3,
611 /* enums of socks authentication methods */
612 enum socks_auth_method {
613 SOCKS_AUTH_NO_AUTH = 0,
614 SOCKS_AUTH_GSSAPI = 1,
615 SOCKS_AUTH_USERNAME_PASSWORD = 2
618 /* enums of subnegotiation status */
619 enum socks_subnegotiation_status {
620 SOCKS_SUBNEGOTIATION_STATUS_SUCCESS = 0,
623 /* enums of socks request reply */
624 enum socks_request_reply {
625 SOCKS_REQUEST_REPLY_SUCCESS = 0,
626 SOCKS_REQUEST_REPLY_FAILURE_GENERAL = 1,
627 SOCKS_REQUEST_REPLY_CONNECTION_NOT_ALLOWED = 2,
628 SOCKS_REQUEST_REPLY_NETWORK_UNREACHABLE = 3,
629 SOCKS_REQUEST_REPLY_HOST_UNREACHABLE = 4,
630 SOCKS_REQUEST_REPLY_CONNECTION_REFUSED = 5,
631 SOCKS_REQUEST_REPLY_TTL_EXPIRED = 6,
632 SOCKS_REQUEST_REPLY_COMMAND_NOT_SUPPORTED = 7,
633 SOCKS_REQUEST_REPLY_ATYP_NOT_SUPPORTED = 8
636 /* enums used to generate socks messages */
637 enum socks_msg_type {
640 /* credential, user name and password */
641 SOCKS_MSG_USERNAME_PASSWORD,
642 /* connect command */
647 LWS_RXFLOW_ALLOW = (1 << 0),
648 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
651 /* this is not usable directly by user code any more, lws_close_reason() */
652 #define LWS_WRITE_CLOSE 4
654 struct lws_protocols;
657 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV) || defined(LWS_USE_LIBEVENT)
659 struct lws_io_watcher {
664 uv_poll_t uv_watcher;
666 #ifdef LWS_USE_LIBEVENT
667 struct event *event_watcher;
669 struct lws_context *context;
672 struct lws_signal_watcher {
674 ev_signal ev_watcher;
677 uv_signal_t uv_watcher;
679 #ifdef LWS_USE_LIBEVENT
680 struct event *event_watcher;
682 struct lws_context *context;
687 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
688 struct lws_fd_hashtable {
695 * This is totally opaque to code using the library. It's exported as a
696 * forward-reference pointer-only declaration; the user can use the pointer with
697 * other APIs to get information out of it.
700 struct lws_fragments {
703 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
707 * these are assigned from a pool held in the context.
708 * Both client and server mode uses them for http header analysis
711 struct allocated_headers {
712 struct lws *wsi; /* owner */
713 char *data; /* prepared by context init to point to dedicated storage */
715 * the randomly ordered fragments, indexed by frag_index and
716 * lws_fragments->nfrag for continuation.
718 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
721 * for each recognized token, frag_index says which frag[] his data
722 * starts in (0 means the token did not appear)
723 * the actual header data gets dumped as it comes in, into data[]
725 unsigned char frag_index[WSI_TOKEN_COUNT];
726 unsigned char rx[2048];
732 unsigned int http_response;
734 #ifndef LWS_NO_CLIENT
735 char initial_handshake_hash_base64[30];
738 unsigned char in_use;
743 * so we can have n connections being serviced simultaneously,
744 * these things need to be isolated per-thread.
747 struct lws_context_per_thread {
749 pthread_mutex_t lock;
751 struct lws_pollfd *fds;
752 #if defined(LWS_WITH_ESP8266)
753 struct lws **lws_vs_fds_index;
755 struct lws *rx_draining_ext_list;
756 struct lws *tx_draining_ext_list;
757 struct lws *timeout_list;
758 #if defined(LWS_USE_LIBUV) || defined(LWS_USE_LIBEVENT)
759 struct lws_context *context;
762 struct lws_cgi *cgi_list;
764 void *http_header_data;
765 struct allocated_headers *ah_pool;
766 struct lws *ah_wait_list;
767 int ah_wait_list_length;
768 #ifdef LWS_OPENSSL_SUPPORT
769 struct lws *pending_read_list; /* linked list */
771 #if defined(LWS_USE_LIBEV)
772 struct ev_loop *io_loop_ev;
774 #if defined(LWS_USE_LIBUV)
775 uv_loop_t *io_loop_uv;
776 uv_signal_t signals[8];
777 uv_timer_t uv_timeout_watcher;
780 #if defined(LWS_USE_LIBEVENT)
781 struct event_base *io_loop_event_base;
783 #if defined(LWS_USE_LIBEV)
784 struct lws_io_watcher w_accept;
786 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV) || defined(LWS_USE_LIBEVENT)
787 struct lws_signal_watcher w_sigint;
788 unsigned char ev_loop_foreign:1;
791 unsigned long count_conns;
793 * usable by anything in the service code, but only if the scope
794 * does not last longer than the service action (since next service
795 * of any socket can likewise use it and overwrite)
797 unsigned char *serv_buf;
801 lws_sockfd_type dummy_pipe_fds[2];
803 unsigned int fds_count;
805 short ah_count_in_use;
807 unsigned char lock_depth;
810 struct lws_conn_stats {
811 unsigned long long rx, tx;
812 unsigned long conn, trans, ws_upg, http2_upg, rejected;
816 lws_sum_stats(const struct lws_context *ctx, struct lws_conn_stats *cs);
819 * virtual host -related context information
820 * vhostwide SSL context
825 * context -> vhost -> wsi
827 * incoming connection non-SSL vhost binding:
829 * listen socket -> wsi -> select vhost after first headers
831 * incoming connection SSL vhost binding:
833 * SSL SNI -> wsi -> bind after SSL negotiation
837 #if !defined(LWS_WITH_ESP8266)
838 char http_proxy_address[128];
839 char proxy_basic_auth_token[128];
840 #if defined(LWS_WITH_SOCKS5)
841 char socks_proxy_address[128];
843 char socks_password[96];
846 #if defined(LWS_WITH_ESP8266)
847 /* listen sockets need a place to hang their hat */
850 struct lws_conn_stats conn_stats;
851 struct lws_context *context;
852 struct lws_vhost *vhost_next;
853 const struct lws_http_mount *mount_list;
854 struct lws *lserv_wsi;
857 const struct lws_protocols *protocols;
858 void **protocol_vh_privs;
859 const struct lws_protocol_vhost_options *pvo;
860 const struct lws_protocol_vhost_options *headers;
861 struct lws **same_vh_protocol_list;
862 #ifdef LWS_OPENSSL_SUPPORT
864 SSL_CTX *ssl_client_ctx;
866 #ifndef LWS_NO_EXTENSIONS
867 const struct lws_extension *extensions;
871 unsigned int http_proxy_port;
872 #if defined(LWS_WITH_SOCKS5)
873 unsigned int socks_proxy_port;
875 unsigned int options;
880 int keepalive_timeout;
881 #ifdef LWS_WITH_ACCESS_LOG
885 #ifdef LWS_OPENSSL_SUPPORT
887 int allow_non_ssl_on_ssl_port;
888 unsigned int user_supplied_ssl_ctx:1;
891 unsigned int created_vhost_protocols:1;
893 unsigned char default_protocol_index;
894 unsigned char raw_protocol_index;
898 * the rest is managed per-context, that includes
900 * - processwide single fd -> wsi lookup
901 * - contextwide headers pool
905 time_t last_timeout_check_s;
906 time_t last_ws_ping_pong_check_s;
908 const struct lws_plat_file_ops *fops;
909 struct lws_plat_file_ops fops_platform;
910 #if defined(LWS_WITH_ZIP_FOPS)
911 struct lws_plat_file_ops fops_zip;
913 struct lws_context_per_thread pt[LWS_MAX_SMP];
914 struct lws_conn_stats conn_stats;
916 /* different implementation between unix and windows */
917 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
919 #if defined(LWS_WITH_ESP8266)
920 struct espconn **connpool; /* .reverse points to the wsi */
925 struct lws **lws_lookup; /* fd to wsi */
928 struct lws_vhost *vhost_list;
929 struct lws_plugin *plugin_list;
931 void *external_baggage_free_on_destroy;
932 const struct lws_token_limits *token_limits;
934 const char *server_string;
935 const struct lws_protocol_vhost_options *reject_service_keywords;
936 lws_reload_func deprecation_cb;
938 #if defined(LWS_USE_LIBEV)
939 lws_ev_signal_cb_t * lws_ev_sigint_cb;
941 #if defined(LWS_USE_LIBUV)
942 uv_signal_cb lws_uv_sigint_cb;
944 #if defined(LWS_USE_LIBEVENT)
945 lws_event_signal_cb_t * lws_event_sigint_cb;
947 char canonical_hostname[128];
949 unsigned long worst_latency;
950 char worst_latency_info[256];
953 #if defined(LWS_WITH_STATS)
954 uint64_t lws_stats[LWSSTATS_SIZE];
960 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV) || defined(LWS_USE_LIBEVENT)
963 int started_with_parent;
967 #ifdef LWS_OPENSSL_SUPPORT
968 #define lws_ssl_anybody_has_buffered_read(w) \
969 (w->vhost->use_ssl && \
970 w->context->pt[(int)w->tsi].pending_read_list)
971 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
972 (/*c->use_ssl && */ \
973 c->pt[(int)t].pending_read_list)
975 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
976 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
978 int count_wsi_allocated;
979 int count_cgi_spawned;
980 unsigned int options;
981 unsigned int fd_limit_per_thread;
982 unsigned int timeout_secs;
983 unsigned int pt_serv_buf_size;
984 int max_http_header_data;
985 int simultaneous_ssl_restriction;
986 int simultaneous_ssl;
988 unsigned int deprecated:1;
989 unsigned int being_destroyed:1;
990 unsigned int being_destroyed1:1;
991 unsigned int requested_kill:1;
992 unsigned int protocol_init_done:1;
993 unsigned int ssl_gate_accepts:1;
995 * set to the Thread ID that's doing the service loop just before entry
996 * to poll indicates service thread likely idling in poll()
997 * volatile because other threads may check it as part of processing
998 * for pollfd event change.
1000 volatile int service_tid;
1001 int service_tid_detected;
1003 short max_http_header_pool;
1004 short count_threads;
1005 short plugin_protocol_count;
1006 short plugin_extension_count;
1007 short server_string_len;
1008 unsigned short ws_ping_pong_interval;
1009 unsigned short deprecation_pending_listen_close_count;
1013 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
1014 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
1017 lws_close_free_wsi_final(struct lws *wsi);
1019 lws_libuv_closehandle(struct lws *wsi);
1021 LWS_VISIBLE LWS_EXTERN int
1022 lws_plat_plugins_init(struct lws_context * context, const char * const *d);
1024 LWS_VISIBLE LWS_EXTERN int
1025 lws_plat_plugins_destroy(struct lws_context * context);
1028 lws_restart_ws_ping_pong_timer(struct lws *wsi);
1031 lws_adopt_socket_vhost(struct lws_vhost *vh, lws_sockfd_type accept_fd);
1035 LWS_EV_READ = (1 << 0),
1036 LWS_EV_WRITE = (1 << 1),
1037 LWS_EV_START = (1 << 2),
1038 LWS_EV_STOP = (1 << 3),
1040 LWS_EV_PREPARE_DELETION = (1 << 31),
1043 #if defined(LWS_USE_LIBEV)
1045 lws_libev_accept(struct lws *new_wsi, lws_sock_file_fd_type desc);
1047 lws_libev_io(struct lws *wsi, int flags);
1049 lws_libev_init_fd_table(struct lws_context *context);
1051 lws_libev_destroyloop(struct lws_context *context, int tsi);
1053 lws_libev_run(const struct lws_context *context, int tsi);
1054 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
1055 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
1057 #define lws_libev_accept(_a, _b) ((void) 0)
1058 #define lws_libev_io(_a, _b) ((void) 0)
1059 #define lws_libev_init_fd_table(_a) (0)
1060 #define lws_libev_run(_a, _b) ((void) 0)
1061 #define lws_libev_destroyloop(_a, _b) ((void) 0)
1062 #define LWS_LIBEV_ENABLED(context) (0)
1063 #if LWS_POSIX && !defined(LWS_WITH_ESP32)
1064 #define lws_feature_status_libev(_a) \
1065 lwsl_notice("libev support not compiled in\n")
1067 #define lws_feature_status_libev(_a)
1071 #if defined(LWS_USE_LIBUV)
1073 lws_libuv_accept(struct lws *new_wsi, lws_sock_file_fd_type desc);
1075 lws_libuv_io(struct lws *wsi, int flags);
1077 lws_libuv_init_fd_table(struct lws_context *context);
1079 lws_libuv_run(const struct lws_context *context, int tsi);
1081 lws_libuv_destroyloop(struct lws_context *context, int tsi);
1083 lws_uv_initvhost(struct lws_vhost* vh, struct lws*);
1084 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
1085 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
1087 #define lws_libuv_accept(_a, _b) ((void) 0)
1088 #define lws_libuv_io(_a, _b) ((void) 0)
1089 #define lws_libuv_init_fd_table(_a) (0)
1090 #define lws_libuv_run(_a, _b) ((void) 0)
1091 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
1092 #define LWS_LIBUV_ENABLED(context) (0)
1093 #if LWS_POSIX && !defined(LWS_WITH_ESP32)
1094 #define lws_feature_status_libuv(_a) \
1095 lwsl_notice("libuv support not compiled in\n")
1097 #define lws_feature_status_libuv(_a)
1101 #if defined(LWS_USE_LIBEVENT)
1103 lws_libevent_accept(struct lws *new_wsi, lws_sock_file_fd_type desc);
1105 lws_libevent_io(struct lws *wsi, int flags);
1107 lws_libevent_init_fd_table(struct lws_context *context);
1109 lws_libevent_destroyloop(struct lws_context *context, int tsi);
1111 lws_libevent_run(const struct lws_context *context, int tsi);
1112 #define LWS_LIBEVENT_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEVENT)
1113 LWS_EXTERN void lws_feature_status_libevent(struct lws_context_creation_info *info);
1115 #define lws_libevent_accept(_a, _b) ((void) 0)
1116 #define lws_libevent_io(_a, _b) ((void) 0)
1117 #define lws_libevent_init_fd_table(_a) (0)
1118 #define lws_libevent_run(_a, _b) ((void) 0)
1119 #define lws_libevent_destroyloop(_a, _b) ((void) 0)
1120 #define LWS_LIBEVENT_ENABLED(context) (0)
1121 #if LWS_POSIX && !defined(LWS_WITH_ESP32)
1122 #define lws_feature_status_libevent(_a) \
1123 lwsl_notice("libevent support not compiled in\n")
1125 #define lws_feature_status_libevent(_a)
1131 #define LWS_IPV6_ENABLED(vh) \
1132 (!lws_check_opt(vh->context->options, LWS_SERVER_OPTION_DISABLE_IPV6) && \
1133 !lws_check_opt(vh->options, LWS_SERVER_OPTION_DISABLE_IPV6))
1135 #define LWS_IPV6_ENABLED(context) (0)
1138 #ifdef LWS_USE_UNIX_SOCK
1139 #define LWS_UNIX_SOCK_ENABLED(vhost) \
1140 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
1142 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
1144 enum uri_path_states {
1147 URIPS_SEEN_SLASH_DOT,
1148 URIPS_SEEN_SLASH_DOT_DOT,
1151 enum uri_esc_states {
1154 URIES_SEEN_PERCENT_H1,
1157 /* notice that these union members:
1163 * all have a pointer to allocated_headers struct as their first member.
1165 * It means for allocated_headers access, the three union paths can all be
1166 * used interchangeably to access the same data
1170 #ifndef LWS_NO_CLIENT
1171 struct client_info_stash {
1181 struct _lws_header_related {
1182 /* MUST be first in struct */
1183 struct allocated_headers *ah;
1184 struct lws *ah_wait_list;
1185 unsigned char *preamble_rx;
1186 #ifndef LWS_NO_CLIENT
1187 struct client_info_stash *stash;
1189 unsigned int preamble_rx_len;
1190 enum uri_path_states ups;
1191 enum uri_esc_states ues;
1193 unsigned int current_token_limit;
1196 char post_literal_equal;
1197 unsigned char parser_state; /* enum lws_token_indexes */
1200 #if defined(LWS_WITH_RANGES)
1202 LWSRS_NO_ACTIVE_RANGE,
1211 struct lws_range_parsing {
1212 unsigned long long start, end, extent, agg, budget;
1213 const char buf[128];
1215 enum range_states state;
1216 char start_valid, end_valid, ctr, count_ranges, did_try, inside, send_ctr;
1220 lws_ranges_init(struct lws *wsi, struct lws_range_parsing *rp, unsigned long long extent);
1222 lws_ranges_next(struct lws_range_parsing *rp);
1224 lws_ranges_reset(struct lws_range_parsing *rp);
1227 struct _lws_http_mode_related {
1228 /* MUST be first in struct */
1229 struct allocated_headers *ah; /* mirroring _lws_header_related */
1230 struct lws *ah_wait_list;
1231 unsigned char *preamble_rx;
1232 #ifndef LWS_NO_CLIENT
1233 struct client_info_stash *stash;
1235 unsigned int preamble_rx_len;
1236 struct lws *new_wsi_list;
1237 lws_filepos_t filepos;
1238 lws_filepos_t filelen;
1239 lws_fop_fd_t fop_fd;
1241 #if defined(LWS_WITH_RANGES)
1242 struct lws_range_parsing range;
1243 char multipart_content_type[64];
1246 enum http_version request_version;
1247 enum http_connection_type connection_type;
1248 unsigned int content_length;
1249 unsigned int content_remain;
1252 #ifdef LWS_USE_HTTP2
1254 enum lws_http2_settings {
1255 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
1256 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
1257 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
1258 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
1259 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
1260 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
1262 LWS_HTTP2_SETTINGS__COUNT /* always last */
1265 enum lws_http2_wellknown_frame_types {
1266 LWS_HTTP2_FRAME_TYPE_DATA,
1267 LWS_HTTP2_FRAME_TYPE_HEADERS,
1268 LWS_HTTP2_FRAME_TYPE_PRIORITY,
1269 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
1270 LWS_HTTP2_FRAME_TYPE_SETTINGS,
1271 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
1272 LWS_HTTP2_FRAME_TYPE_PING,
1273 LWS_HTTP2_FRAME_TYPE_GOAWAY,
1274 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
1275 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
1277 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
1280 enum lws_http2_flags {
1281 LWS_HTTP2_FLAG_END_STREAM = 1,
1282 LWS_HTTP2_FLAG_END_HEADERS = 4,
1283 LWS_HTTP2_FLAG_PADDED = 8,
1284 LWS_HTTP2_FLAG_PRIORITY = 0x20,
1286 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
1289 #define LWS_HTTP2_STREAM_ID_MASTER 0
1290 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
1291 #define LWS_HTTP2_SETTINGS_LENGTH 6
1293 struct http2_settings {
1294 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
1297 enum http2_hpack_state {
1299 /* optional before first header block */
1301 HKPS_OPT_E_DEPENDENCY,
1314 /* optional after last header block */
1315 HKPS_OPT_DISCARD_PADDING,
1318 enum http2_hpack_type {
1320 HPKT_INDEXED_HDR_6_VALUE_INCR,
1321 HPKT_LITERAL_HDR_VALUE_INCR,
1322 HPKT_INDEXED_HDR_4_VALUE,
1323 HPKT_LITERAL_HDR_VALUE,
1327 struct hpack_dt_entry {
1328 int token; /* additions that don't map to a token are ignored */
1333 struct hpack_dynamic_table {
1334 struct hpack_dt_entry *entries;
1342 struct _lws_http2_related {
1344 * having this first lets us also re-use all HTTP union code
1345 * and in turn, http_mode_related has allocated headers in right
1346 * place so we can use the header apis on the wsi directly still
1348 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1350 struct http2_settings my_settings;
1351 struct http2_settings peer_settings;
1353 struct lws *parent_wsi;
1354 struct lws *next_child_wsi;
1356 struct hpack_dynamic_table *hpack_dyn_table;
1357 struct lws *stream_wsi;
1358 unsigned char ping_payload[8];
1359 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1362 unsigned int length;
1363 unsigned int stream_id;
1364 enum http2_hpack_state hpack;
1365 enum http2_hpack_type hpack_type;
1366 unsigned int header_index;
1367 unsigned int hpack_len;
1368 unsigned int hpack_e_dep;
1370 unsigned int my_stream_id;
1371 unsigned int child_count;
1374 unsigned int END_STREAM:1;
1375 unsigned int END_HEADERS:1;
1376 unsigned int send_END_STREAM:1;
1377 unsigned int GOING_AWAY;
1378 unsigned int requested_POLLOUT:1;
1379 unsigned int waiting_tx_credit:1;
1380 unsigned int huff:1;
1381 unsigned int value:1;
1383 unsigned short round_robin_POLLOUT;
1384 unsigned short count_POLLOUT_children;
1385 unsigned short hpack_pos;
1388 unsigned char flags;
1389 unsigned char frame_state;
1390 unsigned char padding;
1391 unsigned char hpack_m;
1392 unsigned char initialized;
1395 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1399 struct _lws_websocket_related {
1400 /* cheapest way to deal with ah overlap with ws union transition */
1401 struct _lws_header_related hdr;
1403 unsigned int rx_ubuf_alloc;
1404 struct lws *rx_draining_ext_list;
1405 struct lws *tx_draining_ext_list;
1406 time_t time_next_ping_check;
1407 size_t rx_packet_length;
1408 unsigned int rx_ubuf_head;
1409 unsigned char mask[4];
1410 /* Also used for close content... control opcode == < 128 */
1411 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1413 unsigned char ping_payload_len;
1414 unsigned char mask_idx;
1415 unsigned char opcode;
1417 unsigned char rsv_first_msg;
1418 /* zero if no info, or length including 2-byte close code */
1419 unsigned char close_in_ping_buffer_len;
1421 unsigned char stashed_write_type;
1422 unsigned char tx_draining_stashed_wp;
1424 unsigned int final:1;
1425 unsigned int frame_is_binary:1;
1426 unsigned int all_zero_nonce:1;
1427 unsigned int this_frame_masked:1;
1428 unsigned int inside_frame:1; /* next write will be more of frame */
1429 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1430 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1431 unsigned int ping_pending_flag:1;
1432 unsigned int continuation_possible:1;
1433 unsigned int owed_a_fin:1;
1434 unsigned int check_utf8:1;
1435 unsigned int defeat_check_utf8:1;
1436 unsigned int pmce_compressed_message:1;
1437 unsigned int stashed_write_pending:1;
1438 unsigned int rx_draining_ext:1;
1439 unsigned int tx_draining_ext:1;
1440 unsigned int send_check_ping:1;
1446 SIGNIFICANT_HDR_CONTENT_LENGTH,
1447 SIGNIFICANT_HDR_LOCATION,
1448 SIGNIFICANT_HDR_STATUS,
1449 SIGNIFICANT_HDR_TRANSFER_ENCODING,
1451 SIGNIFICANT_HDR_COUNT
1454 /* wsi who is master of the cgi points to an lws_cgi */
1457 struct lws_cgi *cgi_list;
1458 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1459 struct lws *wsi; /* owner */
1460 unsigned char *headers_buf;
1461 unsigned char *headers_pos;
1462 unsigned char *headers_dumped;
1463 unsigned char *headers_end;
1464 unsigned long content_length;
1465 unsigned long content_length_seen;
1467 int match[SIGNIFICANT_HDR_COUNT];
1473 unsigned int being_closed:1;
1474 unsigned int explicitly_chunked:1;
1476 unsigned char chunked_grace;
1480 signed char char_to_hex(const char c);
1482 #ifndef LWS_NO_CLIENT
1483 enum lws_chunk_parser {
1494 #ifdef LWS_WITH_ACCESS_LOG
1495 struct lws_access_log {
1506 /* members with mutually exclusive lifetimes are unionized */
1509 struct _lws_http_mode_related http;
1510 #ifdef LWS_USE_HTTP2
1511 struct _lws_http2_related http2;
1513 struct _lws_header_related hdr;
1514 struct _lws_websocket_related ws;
1517 /* lifetime members */
1519 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV) || defined(LWS_USE_LIBEVENT)
1520 struct lws_io_watcher w_read;
1522 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBEVENT)
1523 struct lws_io_watcher w_write;
1525 time_t pending_timeout_limit;
1529 struct lws_context *context;
1530 struct lws_vhost *vhost;
1531 struct lws *parent; /* points to parent, if any */
1532 struct lws *child_list; /* points to first child */
1533 struct lws *sibling_list; /* subsequent children at same level */
1535 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1537 const struct lws_protocols *protocol;
1538 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1539 struct lws *timeout_list;
1540 struct lws **timeout_list_prev;
1541 #ifdef LWS_WITH_ACCESS_LOG
1542 struct lws_access_log access_log;
1545 /* rxflow handling */
1546 unsigned char *rxflow_buffer;
1547 /* truncated send handling */
1548 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1550 #if defined (LWS_WITH_ESP8266)
1552 unsigned short prem_rx_size, prem_rx_pos;
1555 #ifndef LWS_NO_EXTENSIONS
1556 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1557 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1559 #ifdef LWS_OPENSSL_SUPPORT
1562 struct lws *pending_read_list_prev, *pending_read_list_next;
1563 #if defined(LWS_WITH_STATS)
1564 uint64_t accept_start_us;
1568 #ifdef LWS_WITH_HTTP_PROXY
1569 struct lws_rewrite *rw;
1572 unsigned long action_start;
1573 unsigned long latency_start;
1575 lws_sock_file_fd_type desc; /* .filefd / .sockfd */
1576 #if defined(LWS_WITH_STATS)
1577 uint64_t active_writable_req_us;
1580 int position_in_fds_table;
1583 unsigned int trunc_alloc_len; /* size of malloc */
1584 unsigned int trunc_offset; /* where we are in terms of spilling */
1585 unsigned int trunc_len; /* how much is buffered */
1586 #ifndef LWS_NO_CLIENT
1587 int chunk_remaining;
1589 unsigned int cache_secs;
1591 unsigned int hdr_parsing_completed:1;
1592 unsigned int http2_substream:1;
1593 unsigned int listener:1;
1594 unsigned int user_space_externally_allocated:1;
1595 unsigned int socket_is_permanently_unusable:1;
1596 unsigned int rxflow_change_to:2;
1597 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1598 unsigned int conn_stat_done:1;
1599 unsigned int cache_reuse:1;
1600 unsigned int cache_revalidate:1;
1601 unsigned int cache_intermediaries:1;
1602 unsigned int favoured_pollin:1;
1603 unsigned int sending_chunked:1;
1604 unsigned int already_did_cce:1;
1605 unsigned int told_user_closed:1;
1607 #if defined(LWS_WITH_ESP8266)
1608 unsigned int pending_send_completion:3;
1609 unsigned int close_is_pending_send_completion:1;
1611 #ifdef LWS_WITH_ACCESS_LOG
1612 unsigned int access_log_pending:1;
1614 #ifndef LWS_NO_CLIENT
1615 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1616 unsigned int chunked:1; /* if the clientside connection is chunked */
1617 unsigned int client_rx_avail:1;
1618 unsigned int client_http_body_pending:1;
1620 #ifdef LWS_WITH_HTTP_PROXY
1621 unsigned int perform_rewrite:1;
1623 #ifndef LWS_NO_EXTENSIONS
1624 unsigned int extension_data_pending:1;
1626 #ifdef LWS_OPENSSL_SUPPORT
1627 unsigned int use_ssl:4;
1630 unsigned int sock_send_blocking:1;
1632 #ifdef LWS_OPENSSL_SUPPORT
1633 unsigned int redirect_to_https:1;
1636 /* volatile to make sure code is aware other thread can change */
1637 volatile unsigned int handling_pollout:1;
1638 volatile unsigned int leave_pollout_active:1;
1640 #ifndef LWS_NO_CLIENT
1641 unsigned short c_port;
1645 #ifndef LWS_NO_EXTENSIONS
1646 unsigned char count_act_ext;
1648 unsigned char ietf_spec_revision;
1649 char mode; /* enum connection_mode */
1650 char state; /* enum lws_connection_states */
1651 char state_pre_close;
1652 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1653 char rx_frame_type; /* enum lws_write_protocol */
1654 char pending_timeout; /* enum pending_timeout */
1655 char pps; /* enum lws_pending_protocol_send */
1656 char tsi; /* thread service index we belong to */
1657 char protocol_interpret_idx;
1660 char cgi_channel; /* which of stdin/out/err */
1663 #ifndef LWS_NO_CLIENT
1664 char chunk_parser; /* enum lws_chunk_parser */
1666 #if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT)
1667 char reason_bf; /* internal writeable callback reason bitfield */
1671 LWS_EXTERN int log_level;
1674 lws_socket_bind(struct lws_vhost *vhost, lws_sockfd_type sockfd, int port,
1677 #if defined(LWS_USE_IPV6)
1678 LWS_EXTERN unsigned long
1679 lws_get_addr_scope(const char *ipaddr);
1683 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1686 remove_wsi_socket_from_fds(struct lws *wsi);
1688 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1692 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1693 int ret, int completion) {
1695 (void)context; (void)wsi; (void)action; (void)ret;
1700 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1701 do { (void)context; (void)wsi; } while (0);
1704 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1706 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1707 int ret, int completion);
1711 lws_set_protocol_write_pending(struct lws *wsi,
1712 enum lws_pending_protocol_send pend);
1713 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1714 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1716 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1717 lws_parse(struct lws *wsi, unsigned char c);
1719 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1720 lws_http_action(struct lws *wsi);
1723 lws_b64_selftest(void);
1726 lws_service_flag_pending(struct lws_context *context, int tsi);
1728 #if defined(_WIN32) || defined(LWS_WITH_ESP8266)
1729 LWS_EXTERN struct lws *
1730 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1733 insert_wsi(struct lws_context *context, struct lws *wsi);
1736 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1738 #define wsi_from_fd(A,B) A->lws_lookup[B]
1739 #define insert_wsi(A,B) assert(A->lws_lookup[B->desc.sockfd] == 0); A->lws_lookup[B->desc.sockfd]=B
1740 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1743 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1744 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1746 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1747 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1750 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1751 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1754 lws_remove_from_timeout_list(struct lws *wsi);
1756 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1757 lws_client_connect_2(struct lws *wsi);
1759 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1760 lws_client_reset(struct lws **wsi, int ssl, const char *address, int port,
1761 const char *path, const char *host);
1763 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1764 lws_create_new_server_wsi(struct lws_vhost *vhost);
1766 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1767 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1770 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1772 LWS_EXTERN struct lws *
1773 lws_client_connect_via_info2(struct lws *wsi);
1779 #ifndef LWS_NO_EXTENSIONS
1781 lws_context_init_extensions(struct lws_context_creation_info *info,
1782 struct lws_context *context);
1784 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1785 void *v, size_t len);
1788 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1790 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1791 void *arg, int len);
1794 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1795 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1796 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1797 #define lws_issue_raw_ext_access lws_issue_raw
1798 #define lws_context_init_extensions(_a, _b)
1801 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1802 lws_client_interpret_server_handshake(struct lws *wsi);
1804 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1805 lws_rx_sm(struct lws *wsi, unsigned char c);
1808 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1810 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1811 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1814 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1816 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1817 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1818 enum lws_callback_reasons reason, void *user,
1819 void *in, size_t len);
1820 #ifdef LWS_USE_HTTP2
1821 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1822 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1824 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1825 unsigned char *buf, int len);
1826 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1828 lws_http2_parser(struct lws *wsi, unsigned char c);
1829 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1831 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1832 unsigned int sid, unsigned int len,
1833 unsigned char *buf);
1834 LWS_EXTERN struct lws *
1835 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1836 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1839 lws_add_http2_header_by_name(struct lws *wsi,
1840 const unsigned char *name,
1841 const unsigned char *value, int length,
1842 unsigned char **p, unsigned char *end);
1844 lws_add_http2_header_by_token(struct lws *wsi,
1845 enum lws_token_indexes token,
1846 const unsigned char *value, int length,
1847 unsigned char **p, unsigned char *end);
1849 lws_add_http2_header_status(struct lws *wsi,
1850 unsigned int code, unsigned char **p,
1851 unsigned char *end);
1853 void lws_http2_configure_if_upgraded(struct lws *wsi);
1855 #define lws_http2_configure_if_upgraded(x)
1859 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1862 lws_plat_check_connection_error(struct lws *wsi);
1864 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1865 lws_header_table_attach(struct lws *wsi, int autoservice);
1868 lws_header_table_detach(struct lws *wsi, int autoservice);
1871 lws_header_table_reset(struct lws *wsi, int autoservice);
1873 _lws_header_table_reset(struct allocated_headers *ah);
1875 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1876 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1878 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1879 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1881 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1882 lws_ensure_user_space(struct lws *wsi);
1885 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1887 #ifndef LWS_NO_SERVER
1888 int lws_context_init_server(struct lws_context_creation_info *info,
1889 struct lws_vhost *vhost);
1890 LWS_EXTERN struct lws_vhost *
1891 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1893 handshake_0405(struct lws_context *context, struct lws *wsi);
1894 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1895 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1897 lws_server_get_canonical_hostname(struct lws_context *context,
1898 struct lws_context_creation_info *info);
1900 #define lws_context_init_server(_a, _b) (0)
1901 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1902 #define lws_server_get_canonical_hostname(_a, _b)
1905 #ifndef LWS_NO_DAEMONIZE
1906 LWS_EXTERN int get_daemonize_pid();
1908 #define get_daemonize_pid() (0)
1911 #if !defined(LWS_WITH_ESP8266)
1912 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1913 interface_to_sa(struct lws_vhost *vh, const char *ifname,
1914 struct sockaddr_in *addr, size_t addrlen);
1916 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1918 enum lws_ssl_capable_status {
1919 LWS_SSL_CAPABLE_ERROR = -1,
1920 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1923 #ifndef LWS_OPENSSL_SUPPORT
1924 #define LWS_SSL_ENABLED(context) (0)
1925 #define lws_context_init_server_ssl(_a, _b) (0)
1926 #define lws_ssl_destroy(_a)
1927 #define lws_context_init_http2_ssl(_a)
1928 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1929 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1930 #define lws_ssl_pending lws_ssl_pending_no_ssl
1931 #define lws_server_socket_service_ssl(_b, _c) (0)
1932 #define lws_ssl_close(_a) (0)
1933 #define lws_ssl_context_destroy(_a)
1934 #define lws_ssl_SSL_CTX_destroy(_a)
1935 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1936 #define lws_context_init_ssl_library(_a)
1938 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1939 LWS_EXTERN int openssl_websocket_private_data_index;
1940 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1941 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1942 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1943 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1944 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1945 lws_ssl_pending(struct lws *wsi);
1947 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1948 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1949 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1951 lws_ssl_close(struct lws *wsi);
1953 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1955 lws_ssl_context_destroy(struct lws_context *context);
1957 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1959 lws_ssl_client_bio_create(struct lws *wsi);
1961 lws_ssl_client_connect1(struct lws *wsi);
1963 lws_ssl_client_connect2(struct lws *wsi);
1965 lws_ssl_elaborate_error(void);
1966 #ifndef LWS_NO_SERVER
1968 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1969 struct lws_vhost *vhost);
1971 #define lws_context_init_server_ssl(_a, _b) (0)
1974 lws_ssl_destroy(struct lws_vhost *vhost);
1977 #ifdef LWS_USE_HTTP2
1979 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1981 #define lws_context_init_http2_ssl(_a)
1986 static LWS_INLINE void
1987 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1989 pthread_mutex_init(&pt->lock, NULL);
1992 static LWS_INLINE void
1993 lws_pt_mutex_destroy(struct lws_context_per_thread *pt)
1995 pthread_mutex_destroy(&pt->lock);
1998 static LWS_INLINE void
1999 lws_pt_lock(struct lws_context_per_thread *pt)
2001 if (!pt->lock_depth++)
2002 pthread_mutex_lock(&pt->lock);
2005 static LWS_INLINE void
2006 lws_pt_unlock(struct lws_context_per_thread *pt)
2008 if (!(--pt->lock_depth))
2009 pthread_mutex_unlock(&pt->lock);
2012 #define lws_pt_mutex_init(_a) (void)(_a)
2013 #define lws_pt_mutex_destroy(_a) (void)(_a)
2014 #define lws_pt_lock(_a) (void)(_a)
2015 #define lws_pt_unlock(_a) (void)(_a)
2018 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2019 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
2021 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2022 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
2024 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2025 lws_ssl_pending_no_ssl(struct lws *wsi);
2027 #ifdef LWS_WITH_HTTP_PROXY
2028 struct lws_rewrite {
2029 hubbub_parser *parser;
2030 hubbub_parser_optparams params;
2031 const char *from, *to;
2032 int from_len, to_len;
2033 unsigned char *p, *end;
2036 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
2041 return strncmp((const char *)s->ptr, p, len);
2043 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
2044 LWS_EXTERN struct lws_rewrite *
2045 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
2047 lws_rewrite_destroy(struct lws_rewrite *r);
2049 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
2052 #ifndef LWS_NO_CLIENT
2053 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
2055 struct lws_pollfd *pollfd);
2056 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2057 lws_http_transaction_completed_client(struct lws *wsi);
2058 #ifdef LWS_OPENSSL_SUPPORT
2060 lws_context_init_client_ssl(struct lws_context_creation_info *info,
2061 struct lws_vhost *vhost);
2063 #define lws_context_init_client_ssl(_a, _b) (0)
2065 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2066 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
2068 lws_decode_ssl_error(void);
2070 #define lws_context_init_client_ssl(_a, _b) (0)
2071 #define lws_handshake_client(_a, _b, _c) (0)
2075 _lws_rx_flow_control(struct lws *wsi);
2078 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
2080 #ifndef LWS_NO_SERVER
2082 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
2083 struct lws_pollfd *pollfd);
2085 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
2087 #define lws_server_socket_service(_a, _b, _c) (0)
2088 #define lws_handshake_server(_a, _b, _c) (0)
2091 #ifdef LWS_WITH_ACCESS_LOG
2093 lws_access_log(struct lws *wsi);
2095 #define lws_access_log(_a)
2099 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
2102 lws_protocol_init(struct lws_context *context);
2105 lws_bind_protocol(struct lws *wsi, const struct lws_protocols *p);
2107 const struct lws_http_mount *
2108 lws_find_mount(struct lws *wsi, const char *uri_ptr, int uri_len);
2114 lws_realloc(void *ptr, size_t size);
2116 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
2117 lws_zalloc(size_t size);
2119 #ifdef LWS_PLAT_OPTEE
2120 void *lws_malloc(size_t size);
2121 void lws_free(void *p);
2122 #define lws_free_set_NULL(P) do { lws_free(P); (P) = NULL; } while(0)
2124 #define lws_malloc(S) lws_realloc(NULL, S)
2125 #define lws_free(P) lws_realloc(P, 0)
2126 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
2129 const struct lws_plat_file_ops *
2130 lws_vfs_select_fops(const struct lws_plat_file_ops *fops, const char *vfs_path,
2131 const char **vpath);
2135 lws_plat_delete_socket_from_fds(struct lws_context *context,
2136 struct lws *wsi, int m);
2138 lws_plat_insert_socket_into_fds(struct lws_context *context,
2141 lws_plat_service_periodic(struct lws_context *context);
2144 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
2145 struct lws_pollfd *pfd);
2147 lws_add_wsi_to_draining_ext_list(struct lws *wsi);
2149 lws_remove_wsi_from_draining_ext_list(struct lws *wsi);
2151 lws_plat_context_early_init(void);
2153 lws_plat_context_early_destroy(struct lws_context *context);
2155 lws_plat_context_late_destroy(struct lws_context *context);
2157 lws_poll_listen_fd(struct lws_pollfd *fd);
2159 lws_plat_service(struct lws_context *context, int timeout_ms);
2160 LWS_EXTERN LWS_VISIBLE int
2161 _lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
2163 lws_plat_init(struct lws_context *context,
2164 struct lws_context_creation_info *info);
2166 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
2167 LWS_EXTERN unsigned long long
2168 time_in_microseconds(void);
2169 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
2170 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
2171 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2172 lws_plat_inet_pton(int af, const char *src, void *dst);
2174 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
2175 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);
2176 LWS_EXTERN int alloc_file(struct lws_context *context, const char *filename, uint8_t **buf,
2177 lws_filepos_t *amount);
2178 LWS_EXTERN int alloc_pem_to_der_file(struct lws_context *context, const char *filename, uint8_t **buf,
2179 lws_filepos_t *amount);
2182 lws_same_vh_protocol_remove(struct lws *wsi);
2184 lws_same_vh_protocol_insert(struct lws *wsi, int n);
2186 #if defined(LWS_WITH_STATS)
2188 lws_stats_atomic_bump(struct lws_context * context,
2189 struct lws_context_per_thread *pt, int index, uint64_t bump);
2191 lws_stats_atomic_max(struct lws_context * context,
2192 struct lws_context_per_thread *pt, int index, uint64_t val);
2194 static inline uint64_t lws_stats_atomic_bump(struct lws_context * context,
2195 struct lws_context_per_thread *pt, int index, uint64_t bump) {
2196 (void)context; (void)pt; (void)index; (void)bump; return 0; }
2197 static inline uint64_t lws_stats_atomic_max(struct lws_context * context,
2198 struct lws_context_per_thread *pt, int index, uint64_t val) {
2199 (void)context; (void)pt; (void)index; (void)val; return 0; }
2203 void socks_generate_msg(struct lws *wsi, enum socks_msg_type type,