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;
832 #if defined(LWS_USE_LIBEV)
833 lws_ev_signal_cb_t * lws_ev_sigint_cb;
835 #if defined(LWS_USE_LIBUV)
836 uv_signal_cb lws_uv_sigint_cb;
838 char canonical_hostname[128];
840 unsigned long worst_latency;
841 char worst_latency_info[256];
845 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
848 int started_with_parent;
852 #ifdef LWS_OPENSSL_SUPPORT
853 #define lws_ssl_anybody_has_buffered_read(w) \
854 (w->vhost->use_ssl && \
855 w->context->pt[(int)w->tsi].pending_read_list)
856 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
857 (/*c->use_ssl && */ \
858 c->pt[(int)t].pending_read_list)
860 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
861 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
863 int count_wsi_allocated;
864 int count_cgi_spawned;
865 unsigned int options;
866 unsigned int fd_limit_per_thread;
867 unsigned int timeout_secs;
868 unsigned int pt_serv_buf_size;
869 int max_http_header_data;
872 * set to the Thread ID that's doing the service loop just before entry
873 * to poll indicates service thread likely idling in poll()
874 * volatile because other threads may check it as part of processing
875 * for pollfd event change.
877 volatile int service_tid;
878 int service_tid_detected;
880 short max_http_header_pool;
882 short plugin_protocol_count;
883 short plugin_extension_count;
884 short server_string_len;
885 unsigned short ws_ping_pong_interval;
887 unsigned int being_destroyed:1;
888 unsigned int requested_kill:1;
889 unsigned int protocol_init_done:1;
892 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
893 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
896 lws_close_free_wsi_final(struct lws *wsi);
898 lws_libuv_closehandle(struct lws *wsi);
900 LWS_VISIBLE LWS_EXTERN int
901 lws_plat_plugins_init(struct lws_context * context, const char * const *d);
903 LWS_VISIBLE LWS_EXTERN int
904 lws_plat_plugins_destroy(struct lws_context * context);
907 lws_restart_ws_ping_pong_timer(struct lws *wsi);
910 lws_adopt_socket_vhost(struct lws_vhost *vh, lws_sockfd_type accept_fd);
914 LWS_EV_READ = (1 << 0),
915 LWS_EV_WRITE = (1 << 1),
916 LWS_EV_START = (1 << 2),
917 LWS_EV_STOP = (1 << 3),
919 LWS_EV_PREPARE_DELETION = (1 << 31),
922 #if defined(LWS_USE_LIBEV)
924 lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
926 lws_libev_io(struct lws *wsi, int flags);
928 lws_libev_init_fd_table(struct lws_context *context);
930 lws_libev_destroyloop(struct lws_context *context, int tsi);
932 lws_libev_run(const struct lws_context *context, int tsi);
933 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
934 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
936 #define lws_libev_accept(_a, _b) ((void) 0)
937 #define lws_libev_io(_a, _b) ((void) 0)
938 #define lws_libev_init_fd_table(_a) (0)
939 #define lws_libev_run(_a, _b) ((void) 0)
940 #define lws_libev_destroyloop(_a, _b) ((void) 0)
941 #define LWS_LIBEV_ENABLED(context) (0)
943 #define lws_feature_status_libev(_a) \
944 lwsl_notice("libev support not compiled in\n")
946 #define lws_feature_status_libev(_a)
950 #if defined(LWS_USE_LIBUV)
952 lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
954 lws_libuv_io(struct lws *wsi, int flags);
956 lws_libuv_init_fd_table(struct lws_context *context);
958 lws_libuv_run(const struct lws_context *context, int tsi);
960 lws_libuv_destroyloop(struct lws_context *context, int tsi);
961 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
962 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
964 #define lws_libuv_accept(_a, _b) ((void) 0)
965 #define lws_libuv_io(_a, _b) ((void) 0)
966 #define lws_libuv_init_fd_table(_a) (0)
967 #define lws_libuv_run(_a, _b) ((void) 0)
968 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
969 #define LWS_LIBUV_ENABLED(context) (0)
971 #define lws_feature_status_libuv(_a) \
972 lwsl_notice("libuv support not compiled in\n")
974 #define lws_feature_status_libuv(_a)
980 #define LWS_IPV6_ENABLED(vh) \
981 (!lws_check_opt(vh->context->options, LWS_SERVER_OPTION_DISABLE_IPV6) && \
982 !lws_check_opt(vh->options, LWS_SERVER_OPTION_DISABLE_IPV6))
984 #define LWS_IPV6_ENABLED(context) (0)
987 #ifdef LWS_USE_UNIX_SOCK
988 #define LWS_UNIX_SOCK_ENABLED(vhost) \
989 (vhost->options & LWS_SERVER_OPTION_UNIX_SOCK)
991 #define LWS_UNIX_SOCK_ENABLED(vhost) (0)
993 enum uri_path_states {
996 URIPS_SEEN_SLASH_DOT,
997 URIPS_SEEN_SLASH_DOT_DOT,
1000 enum uri_esc_states {
1003 URIES_SEEN_PERCENT_H1,
1006 /* notice that these union members:
1012 * all have a pointer to allocated_headers struct as their first member.
1014 * It means for allocated_headers access, the three union paths can all be
1015 * used interchangeably to access the same data
1019 #ifndef LWS_NO_CLIENT
1020 struct client_info_stash {
1030 struct _lws_header_related {
1031 /* MUST be first in struct */
1032 struct allocated_headers *ah;
1033 struct lws *ah_wait_list;
1034 unsigned char *preamble_rx;
1035 #ifndef LWS_NO_CLIENT
1036 struct client_info_stash *stash;
1038 unsigned int preamble_rx_len;
1039 enum uri_path_states ups;
1040 enum uri_esc_states ues;
1042 unsigned int current_token_limit;
1043 #ifndef LWS_NO_CLIENT
1044 unsigned short c_port;
1047 char post_literal_equal;
1048 unsigned char parser_state; /* enum lws_token_indexes */
1052 struct _lws_http_mode_related {
1053 /* MUST be first in struct */
1054 struct allocated_headers *ah; /* mirroring _lws_header_related */
1055 struct lws *ah_wait_list;
1056 unsigned char *preamble_rx;
1057 #ifndef LWS_NO_CLIENT
1058 struct client_info_stash *stash;
1060 unsigned int preamble_rx_len;
1061 struct lws *new_wsi_list;
1062 unsigned long filepos;
1063 unsigned long filelen;
1066 enum http_version request_version;
1067 enum http_connection_type connection_type;
1068 unsigned int content_length;
1069 unsigned int content_remain;
1072 #ifdef LWS_USE_HTTP2
1074 enum lws_http2_settings {
1075 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
1076 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
1077 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
1078 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
1079 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
1080 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
1082 LWS_HTTP2_SETTINGS__COUNT /* always last */
1085 enum lws_http2_wellknown_frame_types {
1086 LWS_HTTP2_FRAME_TYPE_DATA,
1087 LWS_HTTP2_FRAME_TYPE_HEADERS,
1088 LWS_HTTP2_FRAME_TYPE_PRIORITY,
1089 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
1090 LWS_HTTP2_FRAME_TYPE_SETTINGS,
1091 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
1092 LWS_HTTP2_FRAME_TYPE_PING,
1093 LWS_HTTP2_FRAME_TYPE_GOAWAY,
1094 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
1095 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
1097 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
1100 enum lws_http2_flags {
1101 LWS_HTTP2_FLAG_END_STREAM = 1,
1102 LWS_HTTP2_FLAG_END_HEADERS = 4,
1103 LWS_HTTP2_FLAG_PADDED = 8,
1104 LWS_HTTP2_FLAG_PRIORITY = 0x20,
1106 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
1109 #define LWS_HTTP2_STREAM_ID_MASTER 0
1110 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
1111 #define LWS_HTTP2_SETTINGS_LENGTH 6
1113 struct http2_settings {
1114 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
1117 enum http2_hpack_state {
1119 /* optional before first header block */
1121 HKPS_OPT_E_DEPENDENCY,
1134 /* optional after last header block */
1135 HKPS_OPT_DISCARD_PADDING,
1138 enum http2_hpack_type {
1140 HPKT_INDEXED_HDR_6_VALUE_INCR,
1141 HPKT_LITERAL_HDR_VALUE_INCR,
1142 HPKT_INDEXED_HDR_4_VALUE,
1143 HPKT_LITERAL_HDR_VALUE,
1147 struct hpack_dt_entry {
1148 int token; /* additions that don't map to a token are ignored */
1153 struct hpack_dynamic_table {
1154 struct hpack_dt_entry *entries;
1162 struct _lws_http2_related {
1164 * having this first lets us also re-use all HTTP union code
1165 * and in turn, http_mode_related has allocated headers in right
1166 * place so we can use the header apis on the wsi directly still
1168 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1170 struct http2_settings my_settings;
1171 struct http2_settings peer_settings;
1173 struct lws *parent_wsi;
1174 struct lws *next_child_wsi;
1176 struct hpack_dynamic_table *hpack_dyn_table;
1177 struct lws *stream_wsi;
1178 unsigned char ping_payload[8];
1179 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1182 unsigned int length;
1183 unsigned int stream_id;
1184 enum http2_hpack_state hpack;
1185 enum http2_hpack_type hpack_type;
1186 unsigned int header_index;
1187 unsigned int hpack_len;
1188 unsigned int hpack_e_dep;
1190 unsigned int my_stream_id;
1191 unsigned int child_count;
1194 unsigned int END_STREAM:1;
1195 unsigned int END_HEADERS:1;
1196 unsigned int send_END_STREAM:1;
1197 unsigned int GOING_AWAY;
1198 unsigned int requested_POLLOUT:1;
1199 unsigned int waiting_tx_credit:1;
1200 unsigned int huff:1;
1201 unsigned int value:1;
1203 unsigned short round_robin_POLLOUT;
1204 unsigned short count_POLLOUT_children;
1205 unsigned short hpack_pos;
1208 unsigned char flags;
1209 unsigned char frame_state;
1210 unsigned char padding;
1211 unsigned char hpack_m;
1212 unsigned char initialized;
1215 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1219 struct _lws_websocket_related {
1220 /* cheapest way to deal with ah overlap with ws union transition */
1221 struct _lws_header_related hdr;
1223 unsigned int rx_ubuf_alloc;
1224 struct lws *rx_draining_ext_list;
1225 struct lws *tx_draining_ext_list;
1226 time_t time_next_ping_check;
1227 size_t rx_packet_length;
1228 unsigned int rx_ubuf_head;
1229 unsigned char mask[4];
1230 /* Also used for close content... control opcode == < 128 */
1231 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1233 unsigned char ping_payload_len;
1234 unsigned char mask_idx;
1235 unsigned char opcode;
1237 unsigned char rsv_first_msg;
1238 /* zero if no info, or length including 2-byte close code */
1239 unsigned char close_in_ping_buffer_len;
1241 unsigned char stashed_write_type;
1242 unsigned char tx_draining_stashed_wp;
1244 unsigned int final:1;
1245 unsigned int frame_is_binary:1;
1246 unsigned int all_zero_nonce:1;
1247 unsigned int this_frame_masked:1;
1248 unsigned int inside_frame:1; /* next write will be more of frame */
1249 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1250 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1251 unsigned int ping_pending_flag:1;
1252 unsigned int continuation_possible:1;
1253 unsigned int owed_a_fin:1;
1254 unsigned int check_utf8:1;
1255 unsigned int defeat_check_utf8:1;
1256 unsigned int pmce_compressed_message:1;
1257 unsigned int stashed_write_pending:1;
1258 unsigned int rx_draining_ext:1;
1259 unsigned int tx_draining_ext:1;
1260 unsigned int send_check_ping:1;
1265 /* wsi who is master of the cgi points to an lws_cgi */
1268 struct lws_cgi *cgi_list;
1269 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1270 struct lws *wsi; /* owner */
1271 unsigned long content_length;
1272 unsigned long content_length_seen;
1276 unsigned int being_closed:1;
1280 signed char char_to_hex(const char c);
1282 #ifndef LWS_NO_CLIENT
1283 enum lws_chunk_parser {
1294 #ifdef LWS_WITH_ACCESS_LOG
1295 struct lws_access_log {
1306 /* members with mutually exclusive lifetimes are unionized */
1309 struct _lws_http_mode_related http;
1310 #ifdef LWS_USE_HTTP2
1311 struct _lws_http2_related http2;
1313 struct _lws_header_related hdr;
1314 struct _lws_websocket_related ws;
1317 /* lifetime members */
1319 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1320 struct lws_io_watcher w_read;
1322 #if defined(LWS_USE_LIBEV)
1323 struct lws_io_watcher w_write;
1325 time_t pending_timeout_limit;
1329 struct lws_context *context;
1330 struct lws_vhost *vhost;
1331 struct lws *parent; /* points to parent, if any */
1332 struct lws *child_list; /* points to first child */
1333 struct lws *sibling_list; /* subsequent children at same level */
1335 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1337 const struct lws_protocols *protocol;
1338 struct lws **same_vh_protocol_prev, *same_vh_protocol_next;
1339 struct lws *timeout_list;
1340 struct lws **timeout_list_prev;
1341 #ifdef LWS_WITH_ACCESS_LOG
1342 struct lws_access_log access_log;
1345 /* rxflow handling */
1346 unsigned char *rxflow_buffer;
1347 /* truncated send handling */
1348 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1350 #if defined (LWS_WITH_ESP8266)
1352 unsigned short prem_rx_size, prem_rx_pos;
1355 #ifndef LWS_NO_EXTENSIONS
1356 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1357 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1359 #ifdef LWS_OPENSSL_SUPPORT
1361 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1364 struct lws *pending_read_list_prev, *pending_read_list_next;
1366 #ifdef LWS_WITH_HTTP_PROXY
1367 struct lws_rewrite *rw;
1370 unsigned long action_start;
1371 unsigned long latency_start;
1374 lws_sockfd_type sock;
1377 int position_in_fds_table;
1380 unsigned int trunc_alloc_len; /* size of malloc */
1381 unsigned int trunc_offset; /* where we are in terms of spilling */
1382 unsigned int trunc_len; /* how much is buffered */
1383 #ifndef LWS_NO_CLIENT
1384 int chunk_remaining;
1386 unsigned int cache_secs;
1388 unsigned int hdr_parsing_completed:1;
1389 unsigned int http2_substream:1;
1390 unsigned int listener:1;
1391 unsigned int user_space_externally_allocated:1;
1392 unsigned int socket_is_permanently_unusable:1;
1393 unsigned int rxflow_change_to:2;
1394 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1395 unsigned int conn_stat_done:1;
1396 unsigned int cache_reuse:1;
1397 unsigned int cache_revalidate:1;
1398 unsigned int cache_intermediaries:1;
1399 unsigned int favoured_pollin:1;
1400 unsigned int sending_chunked:1;
1401 unsigned int already_did_cce:1;
1402 unsigned int told_user_closed:1;
1403 #if defined(LWS_WITH_ESP8266)
1404 unsigned int pending_send_completion:3;
1405 unsigned int close_is_pending_send_completion:1;
1407 #ifdef LWS_WITH_ACCESS_LOG
1408 unsigned int access_log_pending:1;
1410 #ifndef LWS_NO_CLIENT
1411 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1412 unsigned int chunked:1; /* if the clientside connection is chunked */
1413 unsigned int client_rx_avail:1;
1414 unsigned int client_http_body_pending:1;
1416 #ifdef LWS_WITH_HTTP_PROXY
1417 unsigned int perform_rewrite:1;
1419 #ifndef LWS_NO_EXTENSIONS
1420 unsigned int extension_data_pending:1;
1422 #ifdef LWS_OPENSSL_SUPPORT
1423 unsigned int use_ssl:3;
1424 unsigned int upgraded:1;
1427 unsigned int sock_send_blocking:1;
1429 #ifdef LWS_OPENSSL_SUPPORT
1430 unsigned int redirect_to_https:1;
1434 #ifndef LWS_NO_EXTENSIONS
1435 unsigned char count_act_ext;
1437 unsigned char ietf_spec_revision;
1438 char mode; /* enum connection_mode */
1439 char state; /* enum lws_connection_states */
1440 char state_pre_close;
1441 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1442 char rx_frame_type; /* enum lws_write_protocol */
1443 char pending_timeout; /* enum pending_timeout */
1444 char pps; /* enum lws_pending_protocol_send */
1445 char tsi; /* thread service index we belong to */
1446 char protocol_interpret_idx;
1448 char cgi_channel; /* which of stdin/out/err */
1451 #ifndef LWS_NO_CLIENT
1452 char chunk_parser; /* enum lws_chunk_parser */
1454 #if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT)
1455 char reason_bf; /* internal writeable callback reason bitfield */
1459 LWS_EXTERN int log_level;
1462 lws_socket_bind(struct lws_vhost *vhost, int sockfd, int port,
1466 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1469 remove_wsi_socket_from_fds(struct lws *wsi);
1471 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1475 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1476 int ret, int completion) {
1478 (void)context; (void)wsi; (void)action; (void)ret;
1483 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1484 do { (void)context; (void)wsi; } while (0);
1487 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1489 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1490 int ret, int completion);
1494 lws_set_protocol_write_pending(struct lws *wsi,
1495 enum lws_pending_protocol_send pend);
1496 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1497 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1499 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1500 lws_parse(struct lws *wsi, unsigned char c);
1502 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1503 lws_http_action(struct lws *wsi);
1506 lws_b64_selftest(void);
1509 lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
1512 lws_service_flag_pending(struct lws_context *context, int tsi);
1514 #if defined(_WIN32) || defined(MBED_OPERATORS) || defined(LWS_WITH_ESP8266)
1515 LWS_EXTERN struct lws *
1516 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1519 insert_wsi(struct lws_context *context, struct lws *wsi);
1522 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1524 #define wsi_from_fd(A,B) A->lws_lookup[B]
1525 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1526 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1529 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1530 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1532 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1533 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1536 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1537 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1539 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1540 lws_client_connect_2(struct lws *wsi);
1542 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1543 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1544 const char *path, const char *host);
1546 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1547 lws_create_new_server_wsi(struct lws_vhost *vhost);
1549 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1550 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1553 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1555 LWS_EXTERN struct lws *
1556 lws_client_connect_via_info2(struct lws *wsi);
1562 #ifndef LWS_NO_EXTENSIONS
1564 lws_context_init_extensions(struct lws_context_creation_info *info,
1565 struct lws_context *context);
1567 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1568 void *v, size_t len);
1571 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1573 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1574 void *arg, int len);
1577 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1578 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1579 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1580 #define lws_issue_raw_ext_access lws_issue_raw
1581 #define lws_context_init_extensions(_a, _b)
1584 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1585 lws_client_interpret_server_handshake(struct lws *wsi);
1587 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1588 lws_rx_sm(struct lws *wsi, unsigned char c);
1591 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1593 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1594 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1597 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1599 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1600 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1601 enum lws_callback_reasons reason, void *user,
1602 void *in, size_t len);
1603 #ifdef LWS_USE_HTTP2
1604 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1605 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1607 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1608 unsigned char *buf, int len);
1609 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1611 lws_http2_parser(struct lws *wsi, unsigned char c);
1612 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1614 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1615 unsigned int sid, unsigned int len,
1616 unsigned char *buf);
1617 LWS_EXTERN struct lws *
1618 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1619 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1622 lws_add_http2_header_by_name(struct lws *wsi,
1623 const unsigned char *name,
1624 const unsigned char *value, int length,
1625 unsigned char **p, unsigned char *end);
1627 lws_add_http2_header_by_token(struct lws *wsi,
1628 enum lws_token_indexes token,
1629 const unsigned char *value, int length,
1630 unsigned char **p, unsigned char *end);
1632 lws_add_http2_header_status(struct lws *wsi,
1633 unsigned int code, unsigned char **p,
1634 unsigned char *end);
1636 void lws_http2_configure_if_upgraded(struct lws *wsi);
1638 #define lws_http2_configure_if_upgraded(x)
1642 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1645 lws_plat_check_connection_error(struct lws *wsi);
1647 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1648 lws_header_table_attach(struct lws *wsi, int autoservice);
1651 lws_header_table_detach(struct lws *wsi, int autoservice);
1654 lws_header_table_reset(struct lws *wsi, int autoservice);
1656 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1657 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1659 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1660 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1662 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1663 lws_ensure_user_space(struct lws *wsi);
1666 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1668 #ifndef LWS_NO_SERVER
1669 int lws_context_init_server(struct lws_context_creation_info *info,
1670 struct lws_vhost *vhost);
1671 LWS_EXTERN struct lws_vhost *
1672 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1674 handshake_0405(struct lws_context *context, struct lws *wsi);
1675 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1676 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1678 lws_server_get_canonical_hostname(struct lws_context *context,
1679 struct lws_context_creation_info *info);
1681 #define lws_context_init_server(_a, _b) (0)
1682 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1683 #define lws_server_get_canonical_hostname(_a, _b)
1686 #ifndef LWS_NO_DAEMONIZE
1687 LWS_EXTERN int get_daemonize_pid();
1689 #define get_daemonize_pid() (0)
1692 #if !defined(MBED_OPERATORS) && !defined(LWS_WITH_ESP8266)
1693 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1694 interface_to_sa(struct lws_vhost *vh, const char *ifname,
1695 struct sockaddr_in *addr, size_t addrlen);
1697 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1699 enum lws_ssl_capable_status {
1700 LWS_SSL_CAPABLE_ERROR = -1,
1701 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1704 #ifndef LWS_OPENSSL_SUPPORT
1705 #define LWS_SSL_ENABLED(context) (0)
1706 #define lws_context_init_server_ssl(_a, _b) (0)
1707 #define lws_ssl_destroy(_a)
1708 #define lws_context_init_http2_ssl(_a)
1709 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1710 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1711 #define lws_ssl_pending lws_ssl_pending_no_ssl
1712 #define lws_server_socket_service_ssl(_b, _c) (0)
1713 #define lws_ssl_close(_a) (0)
1714 #define lws_ssl_context_destroy(_a)
1715 #define lws_ssl_SSL_CTX_destroy(_a)
1716 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1717 #define lws_context_init_ssl_library(_a)
1719 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1720 LWS_EXTERN int openssl_websocket_private_data_index;
1721 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1722 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1723 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1724 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1725 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1726 lws_ssl_pending(struct lws *wsi);
1728 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1729 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1730 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1732 lws_ssl_close(struct lws *wsi);
1734 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1736 lws_ssl_context_destroy(struct lws_context *context);
1738 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1740 lws_ssl_client_bio_create(struct lws *wsi);
1742 lws_ssl_client_connect1(struct lws *wsi);
1744 lws_ssl_client_connect2(struct lws *wsi);
1746 lws_ssl_elaborate_error(void);
1747 #ifndef LWS_NO_SERVER
1749 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1750 struct lws_vhost *vhost);
1752 #define lws_context_init_server_ssl(_a, _b) (0)
1755 lws_ssl_destroy(struct lws_vhost *vhost);
1759 #ifdef LWS_USE_HTTP2
1761 lws_context_init_http2_ssl(struct lws_vhost *vhost);
1763 #define lws_context_init_http2_ssl(_a)
1768 static LWS_INLINE void
1769 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1771 pthread_mutex_init(&pt->lock, NULL);
1774 static LWS_INLINE void
1775 lws_pt_mutex_destroy(struct lws_context_per_thread *pt)
1777 pthread_mutex_destroy(&pt->lock);
1780 static LWS_INLINE void
1781 lws_pt_lock(struct lws_context_per_thread *pt)
1783 if (!pt->lock_depth++)
1784 pthread_mutex_lock(&pt->lock);
1787 static LWS_INLINE void
1788 lws_pt_unlock(struct lws_context_per_thread *pt)
1790 if (!(--pt->lock_depth))
1791 pthread_mutex_unlock(&pt->lock);
1794 #define lws_pt_mutex_init(_a) (void)(_a)
1795 #define lws_pt_mutex_destroy(_a) (void)(_a)
1796 #define lws_pt_lock(_a) (void)(_a)
1797 #define lws_pt_unlock(_a) (void)(_a)
1800 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1801 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1803 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1804 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1806 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1807 lws_ssl_pending_no_ssl(struct lws *wsi);
1809 #ifdef LWS_WITH_HTTP_PROXY
1810 struct lws_rewrite {
1811 hubbub_parser *parser;
1812 hubbub_parser_optparams params;
1813 const char *from, *to;
1814 int from_len, to_len;
1815 unsigned char *p, *end;
1818 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1823 return strncmp((const char *)s->ptr, p, len);
1825 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1826 LWS_EXTERN struct lws_rewrite *
1827 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1829 lws_rewrite_destroy(struct lws_rewrite *r);
1831 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1834 #ifndef LWS_NO_CLIENT
1835 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1837 struct lws_pollfd *pollfd);
1838 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1839 lws_http_transaction_completed_client(struct lws *wsi);
1840 #ifdef LWS_OPENSSL_SUPPORT
1842 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1843 struct lws_vhost *vhost);
1845 #define lws_context_init_client_ssl(_a, _b) (0)
1847 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1848 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1850 lws_decode_ssl_error(void);
1852 #define lws_context_init_client_ssl(_a, _b) (0)
1853 #define lws_handshake_client(_a, _b, _c) (0)
1857 _lws_rx_flow_control(struct lws *wsi);
1860 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1862 #ifndef LWS_NO_SERVER
1864 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1865 struct lws_pollfd *pollfd);
1867 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1869 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1871 #define lws_server_socket_service(_a, _b, _c) (0)
1872 #define lws_handshake_server(_a, _b, _c) (0)
1873 #define _lws_server_listen_accept_flow_control(a, b) (0)
1876 #ifdef LWS_WITH_ACCESS_LOG
1878 lws_access_log(struct lws *wsi);
1880 #define lws_access_log(_a)
1884 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1887 lws_protocol_init(struct lws_context *context);
1890 lws_bind_protocol(struct lws *wsi, const struct lws_protocols *p);
1892 const struct lws_http_mount *
1893 lws_find_mount(struct lws *wsi, const char *uri_ptr, int uri_len);
1899 lws_realloc(void *ptr, size_t size);
1901 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1902 lws_zalloc(size_t size);
1904 #define lws_malloc(S) lws_realloc(NULL, S)
1905 #define lws_free(P) lws_realloc(P, 0)
1906 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1910 lws_plat_delete_socket_from_fds(struct lws_context *context,
1911 struct lws *wsi, int m);
1913 lws_plat_insert_socket_into_fds(struct lws_context *context,
1916 lws_plat_service_periodic(struct lws_context *context);
1919 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1920 struct lws_pollfd *pfd);
1922 lws_plat_context_early_init(void);
1924 lws_plat_context_early_destroy(struct lws_context *context);
1926 lws_plat_context_late_destroy(struct lws_context *context);
1928 lws_poll_listen_fd(struct lws_pollfd *fd);
1930 lws_plat_service(struct lws_context *context, int timeout_ms);
1931 LWS_EXTERN LWS_VISIBLE int
1932 lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1934 lws_plat_init(struct lws_context *context,
1935 struct lws_context_creation_info *info);
1937 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1938 LWS_EXTERN unsigned long long
1939 time_in_microseconds(void);
1940 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1941 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1943 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1944 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);