2 * libwebsockets - small server side websockets and web server implementation
4 * Copyright (C) 2010 - 2016 Andy Green <andy@warmcat.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation:
9 * version 2.1 of the License.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #include "lws_config.h"
23 #include "lws_config_private.h"
26 #if defined(LWS_WITH_CGI) && defined(LWS_HAVE_VFORK)
30 #ifdef LWS_HAVE_SYS_TYPES_H
31 #include <sys/types.h>
46 #ifdef LWS_HAVE_SYS_STAT_H
50 #if defined(WIN32) || defined(_WIN32)
55 #define _WIN32_WINNT WINVER
57 #define LWS_NO_DAEMONIZE
58 #define LWS_ERRNO WSAGetLastError()
59 #define LWS_EAGAIN WSAEWOULDBLOCK
60 #define LWS_EALREADY WSAEALREADY
61 #define LWS_EINPROGRESS WSAEINPROGRESS
62 #define LWS_EINTR WSAEINTR
63 #define LWS_EISCONN WSAEISCONN
64 #define LWS_EWOULDBLOCK WSAEWOULDBLOCK
65 #define LWS_POLLHUP (FD_CLOSE)
66 #define LWS_POLLIN (FD_READ | FD_ACCEPT)
67 #define LWS_POLLOUT (FD_WRITE)
68 #define MSG_NOSIGNAL 0
69 #define SHUT_RDWR SD_BOTH
70 #define SOL_TCP IPPROTO_TCP
71 #define SHUT_WR SD_SEND
73 #define compatible_close(fd) closesocket(fd)
74 #define lws_set_blocking_send(wsi) wsi->sock_send_blocking = 1
75 #define lws_socket_is_valid(x) (!!x)
76 #define LWS_SOCK_INVALID 0
81 #ifdef LWS_HAVE_IN6ADDR_H
87 #define __func__ __FUNCTION__
91 #define vsnprintf _vsnprintf
93 #ifdef LWS_HAVE__VSNPRINTF
94 #define vsnprintf _vsnprintf
98 #ifdef LWS_HAVE__SNPRINTF
99 #define snprintf _snprintf
102 #else /* not windows --> */
107 #include <sys/types.h>
108 #ifndef MBED_OPERATORS
114 #include <sys/socket.h>
115 #ifdef LWS_WITH_HTTP_PROXY
116 #include <hubbub/hubbub.h>
117 #include <hubbub/parser.h>
119 #ifdef LWS_BUILTIN_GETIFADDRS
120 #include <getifaddrs.h>
124 #if defined (__ANDROID__)
127 #include <sys/syslog.h>
130 #include <sys/socket.h>
132 #include <netinet/in.h>
133 #include <netinet/tcp.h>
134 #include <arpa/inet.h>
142 #include <sys/mman.h>
147 #ifdef LWS_HAVE_SYS_PRCTL_H
148 #include <sys/prctl.h>
152 #include <sys/time.h>
154 #define LWS_ERRNO errno
155 #define LWS_EAGAIN EAGAIN
156 #define LWS_EALREADY EALREADY
157 #define LWS_EINPROGRESS EINPROGRESS
158 #define LWS_EINTR EINTR
159 #define LWS_EISCONN EISCONN
160 #define LWS_EWOULDBLOCK EWOULDBLOCK
161 #define LWS_POLLHUP (POLLHUP|POLLERR)
162 #define LWS_POLLIN (POLLIN)
163 #define LWS_POLLOUT (POLLOUT)
164 static inline int compatible_close(int fd) { return close(fd); }
165 #define lws_set_blocking_send(wsi)
167 #ifdef MBED_OPERATORS
168 #define lws_socket_is_valid(x) ((x) != NULL)
169 #define LWS_SOCK_INVALID (NULL)
171 #define lws_socket_is_valid(x) (x >= 0)
172 #define LWS_SOCK_INVALID (-1)
176 #ifndef LWS_HAVE_BZERO
178 #define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
182 #ifndef LWS_HAVE_STRERROR
183 #define strerror(x) ""
186 #ifdef LWS_OPENSSL_SUPPORT
189 #ifdef USE_OLD_CYASSL
190 #include <cyassl/openssl/ssl.h>
191 #include <cyassl/error-ssl.h>
193 #include <wolfssl/openssl/ssl.h>
194 #include <wolfssl/error-ssl.h>
195 #endif /* not USE_OLD_CYASSL */
197 #if defined(LWS_USE_POLARSSL)
198 #include <polarssl/ssl.h>
199 #include <polarssl/error.h>
200 #include <polarssl/md5.h>
201 #include <polarssl/sha1.h>
202 #include <polarssl/ecdh.h>
204 #if defined(LWS_USE_MBEDTLS)
205 #include <mbedtls/ssl.h>
206 #include <mbedtls/error.h>
207 #include <mbedtls/md5.h>
208 #include <mbedtls/sha1.h>
209 #include <mbedtls/ecdh.h>
211 #include <openssl/ssl.h>
212 #include <openssl/evp.h>
213 #include <openssl/err.h>
214 #include <openssl/md5.h>
215 #include <openssl/sha.h>
216 #ifdef LWS_HAVE_OPENSSL_ECDH_H
217 #include <openssl/ecdh.h>
219 #endif /* not USE_MBEDTLS */
220 #endif /* not USE_POLARSSL */
221 #endif /* not USE_WOLFSSL */
224 #include "libwebsockets.h"
226 #if defined(MBED_OPERATORS)
227 #undef compatible_close
228 #define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
230 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
232 #ifndef LITTLE_ENDIAN
233 #define LITTLE_ENDIAN 1234
236 #define BYTE_ORDER LITTLE_ENDIAN
240 #if defined(WIN32) || defined(_WIN32)
243 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
245 #ifndef LITTLE_ENDIAN
246 #define LITTLE_ENDIAN 1234
249 #define BYTE_ORDER LITTLE_ENDIAN
252 typedef unsigned __int64 u_int64_t;
258 #define __P(protos) protos
260 #define __P(protos) ()
266 #include <sys/stat.h>
267 #include <sys/time.h>
269 #if defined(__APPLE__)
270 #include <machine/endian.h>
271 #elif defined(__FreeBSD__)
272 #include <sys/endian.h>
273 #elif defined(__linux__)
282 #include <gulliver.h>
283 #if defined(__LITTLEENDIAN__)
284 #define BYTE_ORDER __LITTLEENDIAN__
285 #define LITTLE_ENDIAN __LITTLEENDIAN__
286 #define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
288 #if defined(__BIGENDIAN__)
289 #define BYTE_ORDER __BIGENDIAN__
290 #define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
291 #define BIG_ENDIAN __BIGENDIAN__
295 #if !defined(BYTE_ORDER)
296 # define BYTE_ORDER __BYTE_ORDER
298 #if !defined(LITTLE_ENDIAN)
299 # define LITTLE_ENDIAN __LITTLE_ENDIAN
301 #if !defined(BIG_ENDIAN)
302 # define BIG_ENDIAN __BIG_ENDIAN
308 * Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
309 * but happily have something equivalent in the SO_NOSIGPIPE flag.
312 #define MSG_NOSIGNAL SO_NOSIGPIPE
316 #ifndef FD_HASHTABLE_MODULUS
317 #define FD_HASHTABLE_MODULUS 32
321 #ifndef LWS_DEF_HEADER_LEN
322 #define LWS_DEF_HEADER_LEN 1024
324 #ifndef LWS_DEF_HEADER_POOL
325 #define LWS_DEF_HEADER_POOL 16
327 #ifndef LWS_MAX_PROTOCOLS
328 #define LWS_MAX_PROTOCOLS 5
330 #ifndef LWS_MAX_EXTENSIONS_ACTIVE
331 #define LWS_MAX_EXTENSIONS_ACTIVE 2
333 #ifndef LWS_MAX_EXT_OFFERS
334 #define LWS_MAX_EXT_OFFERS 8
336 #ifndef SPEC_LATEST_SUPPORTED
337 #define SPEC_LATEST_SUPPORTED 13
339 #ifndef AWAITING_TIMEOUT
340 #define AWAITING_TIMEOUT 20
342 #ifndef CIPHERS_LIST_STRING
343 #define CIPHERS_LIST_STRING "DEFAULT"
345 #ifndef LWS_SOMAXCONN
346 #define LWS_SOMAXCONN SOMAXCONN
349 #define MAX_WEBSOCKET_04_KEY_LEN 128
350 #define LWS_MAX_SOCKET_IO_BUF 4096
352 #ifndef SYSTEM_RANDOM_FILEPATH
353 #define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
356 enum lws_websocket_opcodes_07 {
357 LWSWSOPC_CONTINUATION = 0,
358 LWSWSOPC_TEXT_FRAME = 1,
359 LWSWSOPC_BINARY_FRAME = 2,
361 LWSWSOPC_NOSPEC__MUX = 7,
363 /* control extensions 8+ */
371 enum lws_connection_states {
373 LWSS_HTTP_ISSUING_FILE,
378 LWSS_CLIENT_HTTP_ESTABLISHED,
379 LWSS_CLIENT_UNCONNECTED,
380 LWSS_RETURNED_CLOSE_ALREADY,
381 LWSS_AWAITING_CLOSE_ACK,
382 LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
385 LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
386 LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
387 LWSS_HTTP2_ESTABLISHED,
397 enum http_connection_type {
398 HTTP_CONNECTION_CLOSE,
399 HTTP_CONNECTION_KEEP_ALIVE
402 enum lws_pending_protocol_send {
404 LWS_PPS_HTTP2_MY_SETTINGS,
405 LWS_PPS_HTTP2_ACK_SETTINGS,
409 enum lws_rx_parse_state {
416 LWS_RXPS_04_FRAME_HDR_1,
417 LWS_RXPS_04_FRAME_HDR_LEN,
418 LWS_RXPS_04_FRAME_HDR_LEN16_2,
419 LWS_RXPS_04_FRAME_HDR_LEN16_1,
420 LWS_RXPS_04_FRAME_HDR_LEN64_8,
421 LWS_RXPS_04_FRAME_HDR_LEN64_7,
422 LWS_RXPS_04_FRAME_HDR_LEN64_6,
423 LWS_RXPS_04_FRAME_HDR_LEN64_5,
424 LWS_RXPS_04_FRAME_HDR_LEN64_4,
425 LWS_RXPS_04_FRAME_HDR_LEN64_3,
426 LWS_RXPS_04_FRAME_HDR_LEN64_2,
427 LWS_RXPS_04_FRAME_HDR_LEN64_1,
429 LWS_RXPS_07_COLLECT_FRAME_KEY_1,
430 LWS_RXPS_07_COLLECT_FRAME_KEY_2,
431 LWS_RXPS_07_COLLECT_FRAME_KEY_3,
432 LWS_RXPS_07_COLLECT_FRAME_KEY_4,
434 LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
438 enum connection_mode {
440 LWSCM_HTTP_CLIENT, /* we are client to someone else's server */
441 LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
442 LWSCM_HTTP_CLIENT_ACCEPTED, /* actual HTTP service going on */
443 LWSCM_PRE_WS_SERVING_ACCEPT,
450 /* transient, ssl delay hiding */
451 LWSCM_SSL_ACK_PENDING,
454 /* transient modes */
455 LWSCM_WSCL_WAITING_CONNECT,
456 LWSCM_WSCL_WAITING_PROXY_REPLY,
457 LWSCM_WSCL_ISSUE_HANDSHAKE,
458 LWSCM_WSCL_ISSUE_HANDSHAKE2,
459 LWSCM_WSCL_WAITING_SSL,
460 LWSCM_WSCL_WAITING_SERVER_REPLY,
461 LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
462 LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
464 /* special internal types */
465 LWSCM_SERVER_LISTENER,
466 LWSCM_CGI, /* stdin, stdout, stderr for another cgi master wsi */
470 LWS_RXFLOW_ALLOW = (1 << 0),
471 LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
474 /* this is not usable directly by user code any more, lws_close_reason() */
475 #define LWS_WRITE_CLOSE 4
477 struct lws_protocols;
480 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
482 struct lws_io_watcher {
487 uv_poll_t uv_watcher;
489 struct lws_context *context;
492 struct lws_signal_watcher {
494 ev_signal ev_watcher;
497 uv_signal_t uv_watcher;
499 struct lws_context *context;
504 #define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
505 struct lws_fd_hashtable {
512 * This is totally opaque to code using the library. It's exported as a
513 * forward-reference pointer-only declaration; the user can use the pointer with
514 * other APIs to get information out of it.
517 struct lws_fragments {
518 unsigned short offset;
520 unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
524 * these are assigned from a pool held in the context.
525 * Both client and server mode uses them for http header analysis
528 struct allocated_headers {
529 struct lws *wsi; /* owner */
530 char *data; /* prepared by context init to point to dedicated storage */
532 * the randomly ordered fragments, indexed by frag_index and
533 * lws_fragments->nfrag for continuation.
535 struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
538 * for each recognized token, frag_index says which frag[] his data
539 * starts in (0 means the token did not appear)
540 * the actual header data gets dumped as it comes in, into data[]
542 unsigned char frag_index[WSI_TOKEN_COUNT];
543 unsigned char rx[2048];
547 #ifndef LWS_NO_CLIENT
548 char initial_handshake_hash_base64[30];
552 unsigned char in_use;
557 * so we can have n connections being serviced simultaneously,
558 * these things need to be isolated per-thread.
561 struct lws_context_per_thread {
563 pthread_mutex_t lock;
565 struct lws_pollfd *fds;
566 struct lws *rx_draining_ext_list;
567 struct lws *tx_draining_ext_list;
568 struct lws *timeout_list;
569 struct lws_context *context;
571 struct lws_cgi *cgi_list;
573 void *http_header_data;
574 struct allocated_headers *ah_pool;
575 struct lws *ah_wait_list;
576 int ah_wait_list_length;
577 #ifdef LWS_OPENSSL_SUPPORT
578 struct lws *pending_read_list; /* linked list */
580 #ifndef LWS_NO_SERVER
581 struct lws *wsi_listening;
583 #if defined(LWS_USE_LIBEV)
584 struct ev_loop *io_loop_ev;
586 #if defined(LWS_USE_LIBUV)
587 uv_loop_t *io_loop_uv;
588 uv_signal_t signals[8];
589 uv_timer_t uv_timeout_watcher;
592 #if defined(LWS_USE_LIBEV)
593 struct lws_io_watcher w_accept;
595 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
596 struct lws_signal_watcher w_sigint;
597 unsigned char ev_loop_foreign:1;
600 unsigned long count_conns;
602 * usable by anything in the service code, but only if the scope
603 * does not last longer than the service action (since next service
604 * of any socket can likewise use it and overwrite)
606 unsigned char *serv_buf;
610 int dummy_pipe_fds[2];
612 unsigned int fds_count;
614 short ah_count_in_use;
618 struct lws_http_mount {
619 struct lws_http_mount *mount_next;
620 const char *mountpoint; /* mountpoint in http pathspace, eg, "/" */
621 const char *origin; /* path to be mounted, eg, "/var/www/warmcat.com" */
622 const char *def; /* default target, eg, "index.html" */
624 unsigned char origin_protocol;
625 unsigned char mountpoint_len;
629 * virtual host -related context information
630 * vhostwide SSL context
635 * context -> vhost -> wsi
637 * incoming connection non-SSL vhost binding:
639 * listen socket -> wsi -> select vhost after first headers
641 * incoming connection SSL vhost binding:
643 * SSL SNI -> wsi -> bind after SSL negotiation
647 char http_proxy_address[128];
648 char proxy_basic_auth_token[128];
649 struct lws_context *context;
650 struct lws_vhost *vhost_next;
651 struct lws_http_mount *mount_list;
652 struct lws *lserv_wsi;
655 const struct lws_protocols *protocols;
656 void **protocol_vh_privs;
657 struct lws_protocol_vhost_options *pvo;
658 #ifdef LWS_OPENSSL_SUPPORT
660 SSL_CTX *ssl_client_ctx;
662 #ifndef LWS_NO_EXTENSIONS
663 const struct lws_extension *extensions;
667 unsigned int http_proxy_port;
673 #ifdef LWS_OPENSSL_SUPPORT
675 int allow_non_ssl_on_ssl_port;
676 unsigned int user_supplied_ssl_ctx:1;
681 * the rest is managed per-context, that includes
683 * - processwide single fd -> wsi lookup
684 * - contextwide headers pool
688 time_t last_timeout_check_s;
689 struct lws_plat_file_ops fops;
690 struct lws_context_per_thread pt[LWS_MAX_SMP];
692 /* different implementation between unix and windows */
693 struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
695 struct lws **lws_lookup; /* fd to wsi */
697 struct lws_vhost *vhost_list;
698 struct lws_plugin *plugin_list;
699 const struct lws_token_limits *token_limits;
702 #if defined(LWS_USE_LIBEV)
703 lws_ev_signal_cb_t * lws_ev_sigint_cb;
705 #if defined(LWS_USE_LIBUV)
706 uv_signal_cb lws_uv_sigint_cb;
708 char canonical_hostname[128];
710 unsigned long worst_latency;
711 char worst_latency_info[256];
715 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
718 int started_with_parent;
722 #ifdef LWS_OPENSSL_SUPPORT
723 #define lws_ssl_anybody_has_buffered_read(w) \
724 (w->vhost->use_ssl && \
725 w->context->pt[(int)w->tsi].pending_read_list)
726 #define lws_ssl_anybody_has_buffered_read_tsi(c, t) \
727 (/*c->use_ssl && */ \
728 c->pt[(int)t].pending_read_list)
730 #define lws_ssl_anybody_has_buffered_read(ctx) (0)
731 #define lws_ssl_anybody_has_buffered_read_tsi(ctx, t) (0)
733 int count_wsi_allocated;
734 unsigned int options;
735 unsigned int fd_limit_per_thread;
736 unsigned int timeout_secs;
739 * set to the Thread ID that's doing the service loop just before entry
740 * to poll indicates service thread likely idling in poll()
741 * volatile because other threads may check it as part of processing
742 * for pollfd event change.
744 volatile int service_tid;
745 int service_tid_detected;
747 short max_http_header_data;
748 short max_http_header_pool;
750 short plugin_protocol_count;
751 short plugin_extension_count;
753 unsigned int being_destroyed:1;
754 unsigned int requested_kill:1;
755 unsigned int protocol_init_done:1;
758 #define lws_get_context_protocol(ctx, x) ctx->vhost_list->protocols[x]
759 #define lws_get_vh_protocol(vh, x) vh->protocols[x]
762 lws_close_free_wsi_final(struct lws *wsi);
764 lws_libuv_closehandle(struct lws *wsi);
766 LWS_VISIBLE LWS_EXTERN int
767 lws_plat_plugins_init(struct lws_context * context, const char *d);
769 LWS_VISIBLE LWS_EXTERN int
770 lws_plat_plugins_destroy(struct lws_context * context);
773 LWS_EV_READ = (1 << 0),
774 LWS_EV_WRITE = (1 << 1),
775 LWS_EV_START = (1 << 2),
776 LWS_EV_STOP = (1 << 3),
778 LWS_EV_PREPARE_DELETION = (1 << 31),
781 #if defined(LWS_USE_LIBEV)
783 lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
785 lws_libev_io(struct lws *wsi, int flags);
787 lws_libev_init_fd_table(struct lws_context *context);
789 lws_libev_destroyloop(struct lws_context *context, int tsi);
791 lws_libev_run(const struct lws_context *context, int tsi);
792 #define LWS_LIBEV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBEV)
793 LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
795 #define lws_libev_accept(_a, _b) ((void) 0)
796 #define lws_libev_io(_a, _b) ((void) 0)
797 #define lws_libev_init_fd_table(_a) (0)
798 #define lws_libev_run(_a, _b) ((void) 0)
799 #define lws_libev_destroyloop(_a, _b) ((void) 0)
800 #define LWS_LIBEV_ENABLED(context) (0)
802 #define lws_feature_status_libev(_a) \
803 lwsl_notice("libev support not compiled in\n")
805 #define lws_feature_status_libev(_a)
809 #if defined(LWS_USE_LIBUV)
811 lws_libuv_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
813 lws_libuv_io(struct lws *wsi, int flags);
815 lws_libuv_init_fd_table(struct lws_context *context);
817 lws_libuv_run(const struct lws_context *context, int tsi);
819 lws_libuv_destroyloop(struct lws_context *context, int tsi);
820 #define LWS_LIBUV_ENABLED(context) lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV)
821 LWS_EXTERN void lws_feature_status_libuv(struct lws_context_creation_info *info);
823 #define lws_libuv_accept(_a, _b) ((void) 0)
824 #define lws_libuv_io(_a, _b) ((void) 0)
825 #define lws_libuv_init_fd_table(_a) (0)
826 #define lws_libuv_run(_a, _b) ((void) 0)
827 #define lws_libuv_destroyloop(_a, _b) ((void) 0)
828 #define LWS_LIBUV_ENABLED(context) (0)
830 #define lws_feature_status_libuv(_a) \
831 lwsl_notice("libuv support not compiled in\n")
833 #define lws_feature_status_libuv(_a)
839 #define LWS_IPV6_ENABLED(context) \
840 (!lws_check_opt(context->options, LWS_SERVER_OPTION_DISABLE_IPV6))
842 #define LWS_IPV6_ENABLED(context) (0)
845 enum uri_path_states {
848 URIPS_SEEN_SLASH_DOT,
849 URIPS_SEEN_SLASH_DOT_DOT,
852 enum uri_esc_states {
855 URIES_SEEN_PERCENT_H1,
858 /* notice that these union members:
864 * all have a pointer to allocated_headers struct as their first member.
866 * It means for allocated_headers access, the three union paths can all be
867 * used interchangeably to access the same data
871 #ifndef LWS_NO_CLIENT
872 struct client_info_stash {
882 struct _lws_header_related {
883 /* MUST be first in struct */
884 struct allocated_headers *ah;
885 struct lws *ah_wait_list;
886 unsigned char *preamble_rx;
887 #ifndef LWS_NO_CLIENT
888 struct client_info_stash *stash;
890 unsigned int preamble_rx_len;
891 enum uri_path_states ups;
892 enum uri_esc_states ues;
894 unsigned short current_token_limit;
895 #ifndef LWS_NO_CLIENT
896 unsigned short c_port;
899 char post_literal_equal;
900 unsigned char parser_state; /* enum lws_token_indexes */
904 struct _lws_http_mode_related {
905 /* MUST be first in struct */
906 struct allocated_headers *ah; /* mirroring _lws_header_related */
907 struct lws *ah_wait_list;
908 unsigned char *preamble_rx;
909 #ifndef LWS_NO_CLIENT
910 struct client_info_stash *stash;
912 unsigned int preamble_rx_len;
913 struct lws *new_wsi_list;
914 unsigned long filepos;
915 unsigned long filelen;
918 enum http_version request_version;
919 enum http_connection_type connection_type;
920 unsigned int content_length;
921 unsigned int content_remain;
926 enum lws_http2_settings {
927 LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
928 LWS_HTTP2_SETTINGS__ENABLE_PUSH,
929 LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
930 LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
931 LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
932 LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
934 LWS_HTTP2_SETTINGS__COUNT /* always last */
937 enum lws_http2_wellknown_frame_types {
938 LWS_HTTP2_FRAME_TYPE_DATA,
939 LWS_HTTP2_FRAME_TYPE_HEADERS,
940 LWS_HTTP2_FRAME_TYPE_PRIORITY,
941 LWS_HTTP2_FRAME_TYPE_RST_STREAM,
942 LWS_HTTP2_FRAME_TYPE_SETTINGS,
943 LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
944 LWS_HTTP2_FRAME_TYPE_PING,
945 LWS_HTTP2_FRAME_TYPE_GOAWAY,
946 LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
947 LWS_HTTP2_FRAME_TYPE_CONTINUATION,
949 LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
952 enum lws_http2_flags {
953 LWS_HTTP2_FLAG_END_STREAM = 1,
954 LWS_HTTP2_FLAG_END_HEADERS = 4,
955 LWS_HTTP2_FLAG_PADDED = 8,
956 LWS_HTTP2_FLAG_PRIORITY = 0x20,
958 LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
961 #define LWS_HTTP2_STREAM_ID_MASTER 0
962 #define LWS_HTTP2_FRAME_HEADER_LENGTH 9
963 #define LWS_HTTP2_SETTINGS_LENGTH 6
965 struct http2_settings {
966 unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
969 enum http2_hpack_state {
971 /* optional before first header block */
973 HKPS_OPT_E_DEPENDENCY,
986 /* optional after last header block */
987 HKPS_OPT_DISCARD_PADDING,
990 enum http2_hpack_type {
992 HPKT_INDEXED_HDR_6_VALUE_INCR,
993 HPKT_LITERAL_HDR_VALUE_INCR,
994 HPKT_INDEXED_HDR_4_VALUE,
995 HPKT_LITERAL_HDR_VALUE,
999 struct hpack_dt_entry {
1000 int token; /* additions that don't map to a token are ignored */
1005 struct hpack_dynamic_table {
1006 struct hpack_dt_entry *entries;
1014 struct _lws_http2_related {
1016 * having this first lets us also re-use all HTTP union code
1017 * and in turn, http_mode_related has allocated headers in right
1018 * place so we can use the header apis on the wsi directly still
1020 struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
1022 struct http2_settings my_settings;
1023 struct http2_settings peer_settings;
1025 struct lws *parent_wsi;
1026 struct lws *next_child_wsi;
1028 struct hpack_dynamic_table *hpack_dyn_table;
1029 struct lws *stream_wsi;
1030 unsigned char ping_payload[8];
1031 unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
1034 unsigned int length;
1035 unsigned int stream_id;
1036 enum http2_hpack_state hpack;
1037 enum http2_hpack_type hpack_type;
1038 unsigned int header_index;
1039 unsigned int hpack_len;
1040 unsigned int hpack_e_dep;
1042 unsigned int my_stream_id;
1043 unsigned int child_count;
1046 unsigned int END_STREAM:1;
1047 unsigned int END_HEADERS:1;
1048 unsigned int send_END_STREAM:1;
1049 unsigned int GOING_AWAY;
1050 unsigned int requested_POLLOUT:1;
1051 unsigned int waiting_tx_credit:1;
1052 unsigned int huff:1;
1053 unsigned int value:1;
1055 unsigned short round_robin_POLLOUT;
1056 unsigned short count_POLLOUT_children;
1057 unsigned short hpack_pos;
1060 unsigned char flags;
1061 unsigned char frame_state;
1062 unsigned char padding;
1063 unsigned char hpack_m;
1064 unsigned char initialized;
1067 #define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
1071 struct _lws_websocket_related {
1072 /* cheapest way to deal with ah overlap with ws union transition */
1073 struct _lws_header_related hdr;
1075 unsigned int rx_ubuf_alloc;
1076 struct lws *rx_draining_ext_list;
1077 struct lws *tx_draining_ext_list;
1078 size_t rx_packet_length;
1079 unsigned int rx_ubuf_head;
1080 unsigned char mask[4];
1081 /* Also used for close content... control opcode == < 128 */
1082 unsigned char ping_payload_buf[128 - 3 + LWS_PRE];
1084 unsigned char ping_payload_len;
1085 unsigned char mask_idx;
1086 unsigned char opcode;
1088 unsigned char rsv_first_msg;
1089 /* zero if no info, or length including 2-byte close code */
1090 unsigned char close_in_ping_buffer_len;
1092 unsigned char stashed_write_type;
1093 unsigned char tx_draining_stashed_wp;
1095 unsigned int final:1;
1096 unsigned int frame_is_binary:1;
1097 unsigned int all_zero_nonce:1;
1098 unsigned int this_frame_masked:1;
1099 unsigned int inside_frame:1; /* next write will be more of frame */
1100 unsigned int clean_buffer:1; /* buffer not rewritten by extension */
1101 unsigned int payload_is_close:1; /* process as PONG, but it is close */
1102 unsigned int ping_pending_flag:1;
1103 unsigned int continuation_possible:1;
1104 unsigned int owed_a_fin:1;
1105 unsigned int check_utf8:1;
1106 unsigned int defeat_check_utf8:1;
1107 unsigned int pmce_compressed_message:1;
1108 unsigned int stashed_write_pending:1;
1109 unsigned int rx_draining_ext:1;
1110 unsigned int tx_draining_ext:1;
1115 /* wsi who is master of the cgi points to an lws_cgi */
1118 struct lws_cgi *cgi_list;
1119 struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
1120 struct lws *wsi; /* owner */
1124 unsigned int being_closed:1;
1128 signed char char_to_hex(const char c);
1130 #ifndef LWS_NO_CLIENT
1131 enum lws_chunk_parser {
1145 /* members with mutually exclusive lifetimes are unionized */
1148 struct _lws_http_mode_related http;
1149 #ifdef LWS_USE_HTTP2
1150 struct _lws_http2_related http2;
1152 struct _lws_header_related hdr;
1153 struct _lws_websocket_related ws;
1156 /* lifetime members */
1158 #if defined(LWS_USE_LIBEV) || defined(LWS_USE_LIBUV)
1159 struct lws_io_watcher w_read;
1161 #if defined(LWS_USE_LIBEV)
1162 struct lws_io_watcher w_write;
1164 time_t pending_timeout_limit;
1168 struct lws_context *context;
1169 struct lws_vhost *vhost;
1170 struct lws *parent; /* points to parent, if any */
1171 struct lws *child_list; /* points to first child */
1172 struct lws *sibling_list; /* subsequent children at same level */
1174 struct lws_cgi *cgi; /* wsi being cgi master have one of these */
1176 const struct lws_protocols *protocol;
1177 struct lws *timeout_list;
1178 struct lws **timeout_list_prev;
1180 /* rxflow handling */
1181 unsigned char *rxflow_buffer;
1182 /* truncated send handling */
1183 unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
1184 #ifndef LWS_NO_EXTENSIONS
1185 const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
1186 void *act_ext_user[LWS_MAX_EXTENSIONS_ACTIVE];
1188 #ifdef LWS_OPENSSL_SUPPORT
1190 #if !defined(LWS_USE_POLARSSL) && !defined(LWS_USE_MBEDTLS)
1193 struct lws *pending_read_list_prev, *pending_read_list_next;
1195 #ifdef LWS_WITH_HTTP_PROXY
1196 struct lws_rewrite *rw;
1199 unsigned long action_start;
1200 unsigned long latency_start;
1203 lws_sockfd_type sock;
1206 int position_in_fds_table;
1209 unsigned int trunc_alloc_len; /* size of malloc */
1210 unsigned int trunc_offset; /* where we are in terms of spilling */
1211 unsigned int trunc_len; /* how much is buffered */
1212 #ifndef LWS_NO_CLIENT
1213 int chunk_remaining;
1216 unsigned int hdr_parsing_completed:1;
1217 unsigned int listener:1;
1218 unsigned int user_space_externally_allocated:1;
1219 unsigned int socket_is_permanently_unusable:1;
1220 unsigned int rxflow_change_to:2;
1221 unsigned int more_rx_waiting:1; /* has to live here since ah may stick to end */
1222 #ifndef LWS_NO_CLIENT
1223 unsigned int do_ws:1; /* whether we are doing http or ws flow */
1224 unsigned int chunked:1; /* if the clientside connection is chunked */
1225 unsigned int client_rx_avail:1;
1227 #ifdef LWS_WITH_HTTP_PROXY
1228 unsigned int perform_rewrite:1;
1230 #ifndef LWS_NO_EXTENSIONS
1231 unsigned int extension_data_pending:1;
1233 #ifdef LWS_OPENSSL_SUPPORT
1234 unsigned int use_ssl:2;
1235 unsigned int upgraded:1;
1238 unsigned int sock_send_blocking:1;
1240 #ifdef LWS_OPENSSL_SUPPORT
1241 unsigned int redirect_to_https:1;
1245 #ifndef LWS_NO_EXTENSIONS
1246 unsigned char count_act_ext;
1248 unsigned char ietf_spec_revision;
1249 char mode; /* enum connection_mode */
1250 char state; /* enum lws_connection_states */
1251 char state_pre_close;
1252 char lws_rx_parse_state; /* enum lws_rx_parse_state */
1253 char rx_frame_type; /* enum lws_write_protocol */
1254 char pending_timeout; /* enum pending_timeout */
1255 char pps; /* enum lws_pending_protocol_send */
1256 char tsi; /* thread service index we belong to */
1258 char cgi_channel; /* which of stdin/out/err */
1261 #ifndef LWS_NO_CLIENT
1262 char chunk_parser; /* enum lws_chunk_parser */
1266 LWS_EXTERN int log_level;
1269 lws_socket_bind(struct lws_context *context, int sockfd, int port,
1273 lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
1276 remove_wsi_socket_from_fds(struct lws *wsi);
1278 lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
1282 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1283 int ret, int completion) {
1285 (void)context; (void)wsi; (void)action; (void)ret;
1290 lws_latency_pre(struct lws_context *context, struct lws *wsi) {
1291 do { (void)context; (void)wsi; } while (0);
1294 #define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
1296 lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
1297 int ret, int completion);
1301 lws_set_protocol_write_pending(struct lws *wsi,
1302 enum lws_pending_protocol_send pend);
1303 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1304 lws_client_rx_sm(struct lws *wsi, unsigned char c);
1306 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1307 lws_parse(struct lws *wsi, unsigned char c);
1309 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1310 lws_http_action(struct lws *wsi);
1313 lws_b64_selftest(void);
1316 lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi);
1319 lws_service_flag_pending(struct lws_context *context, int tsi);
1321 #if defined(_WIN32) || defined(MBED_OPERATORS)
1322 LWS_EXTERN struct lws *
1323 wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
1326 insert_wsi(struct lws_context *context, struct lws *wsi);
1329 delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
1331 #define wsi_from_fd(A,B) A->lws_lookup[B]
1332 #define insert_wsi(A,B) assert(A->lws_lookup[B->sock] == 0); A->lws_lookup[B->sock]=B
1333 #define delete_from_fd(A,B) A->lws_lookup[B]=0
1336 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1337 insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
1339 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1340 lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
1343 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1344 lws_service_timeout_check(struct lws *wsi, unsigned int sec);
1346 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1347 lws_client_connect_2(struct lws *wsi);
1349 LWS_VISIBLE struct lws * LWS_WARN_UNUSED_RESULT
1350 lws_client_reset(struct lws *wsi, int ssl, const char *address, int port,
1351 const char *path, const char *host);
1353 LWS_EXTERN struct lws * LWS_WARN_UNUSED_RESULT
1354 lws_create_new_server_wsi(struct lws_vhost *vhost);
1356 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1357 lws_generate_client_handshake(struct lws *wsi, char *pkt);
1360 lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
1362 LWS_EXTERN struct lws *
1363 lws_client_connect_via_info2(struct lws *wsi);
1369 #ifndef LWS_NO_EXTENSIONS
1371 lws_context_init_extensions(struct lws_context_creation_info *info,
1372 struct lws_context *context);
1374 lws_any_extension_handled(struct lws *wsi, enum lws_extension_callback_reasons r,
1375 void *v, size_t len);
1378 lws_ext_cb_active(struct lws *wsi, int reason, void *buf, int len);
1380 lws_ext_cb_all_exts(struct lws_context *context, struct lws *wsi, int reason,
1381 void *arg, int len);
1384 #define lws_any_extension_handled(_a, _b, _c, _d) (0)
1385 #define lws_ext_cb_active(_a, _b, _c, _d) (0)
1386 #define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
1387 #define lws_issue_raw_ext_access lws_issue_raw
1388 #define lws_context_init_extensions(_a, _b)
1391 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1392 lws_client_interpret_server_handshake(struct lws *wsi);
1394 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1395 lws_rx_sm(struct lws *wsi, unsigned char c);
1398 lws_payload_until_length_exhausted(struct lws *wsi, unsigned char **buf, size_t *len);
1400 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1401 lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
1404 lws_union_transition(struct lws *wsi, enum connection_mode mode);
1406 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1407 user_callback_handle_rxflow(lws_callback_function, struct lws *wsi,
1408 enum lws_callback_reasons reason, void *user,
1409 void *in, size_t len);
1410 #ifdef LWS_USE_HTTP2
1411 LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
1412 struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
1414 lws_http2_interpret_settings_payload(struct http2_settings *settings,
1415 unsigned char *buf, int len);
1416 LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
1418 lws_http2_parser(struct lws *wsi, unsigned char c);
1419 LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
1421 LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
1422 unsigned int sid, unsigned int len,
1423 unsigned char *buf);
1424 LWS_EXTERN struct lws *
1425 lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
1426 LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
1429 lws_add_http2_header_by_name(struct lws *wsi,
1430 const unsigned char *name,
1431 const unsigned char *value, int length,
1432 unsigned char **p, unsigned char *end);
1434 lws_add_http2_header_by_token(struct lws *wsi,
1435 enum lws_token_indexes token,
1436 const unsigned char *value, int length,
1437 unsigned char **p, unsigned char *end);
1439 lws_add_http2_header_status(struct lws *wsi,
1440 unsigned int code, unsigned char **p,
1441 unsigned char *end);
1443 void lws_http2_configure_if_upgraded(struct lws *wsi);
1445 #define lws_http2_configure_if_upgraded(x)
1449 lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd);
1451 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1452 lws_header_table_attach(struct lws *wsi, int autoservice);
1455 lws_header_table_detach(struct lws *wsi, int autoservice);
1458 lws_header_table_reset(struct lws *wsi, int autoservice);
1460 LWS_EXTERN char * LWS_WARN_UNUSED_RESULT
1461 lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
1463 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1464 lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
1467 lws_ensure_user_space(struct lws *wsi);
1470 lws_change_pollfd(struct lws *wsi, int _and, int _or);
1472 #ifndef LWS_NO_SERVER
1473 int lws_context_init_server(struct lws_context_creation_info *info,
1474 struct lws_vhost *vhost);
1475 LWS_EXTERN struct lws_vhost *
1476 lws_select_vhost(struct lws_context *context, int port, const char *servername);
1478 handshake_0405(struct lws_context *context, struct lws *wsi);
1479 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1480 lws_interpret_incoming_packet(struct lws *wsi, unsigned char **buf, size_t len);
1482 lws_server_get_canonical_hostname(struct lws_context *context,
1483 struct lws_context_creation_info *info);
1485 #define lws_context_init_server(_a, _b) (0)
1486 #define lws_interpret_incoming_packet(_a, _b, _c) (0)
1487 #define lws_server_get_canonical_hostname(_a, _b)
1490 #ifndef LWS_NO_DAEMONIZE
1491 LWS_EXTERN int get_daemonize_pid();
1493 #define get_daemonize_pid() (0)
1496 #if !defined(MBED_OPERATORS)
1497 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1498 interface_to_sa(struct lws_context *context, const char *ifname,
1499 struct sockaddr_in *addr, size_t addrlen);
1501 LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
1503 enum lws_ssl_capable_status {
1504 LWS_SSL_CAPABLE_ERROR = -1,
1505 LWS_SSL_CAPABLE_MORE_SERVICE = -2,
1508 #ifndef LWS_OPENSSL_SUPPORT
1509 #define LWS_SSL_ENABLED(context) (0)
1510 #define lws_context_init_server_ssl(_a, _b) (0)
1511 #define lws_ssl_destroy(_a)
1512 #define lws_context_init_http2_ssl(_a)
1513 #define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
1514 #define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
1515 #define lws_ssl_pending lws_ssl_pending_no_ssl
1516 #define lws_server_socket_service_ssl(_b, _c) (0)
1517 #define lws_ssl_close(_a) (0)
1518 #define lws_ssl_context_destroy(_a)
1519 #define lws_ssl_SSL_CTX_destroy(_a)
1520 #define lws_ssl_remove_wsi_from_buffered_list(_a)
1521 #define lws_context_init_ssl_library(_a)
1523 #define LWS_SSL_ENABLED(context) (context->use_ssl)
1524 LWS_EXTERN int openssl_websocket_private_data_index;
1525 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1526 lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
1527 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1528 lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
1529 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1530 lws_ssl_pending(struct lws *wsi);
1532 lws_context_init_ssl_library(struct lws_context_creation_info *info);
1533 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1534 lws_server_socket_service_ssl(struct lws *new_wsi, lws_sockfd_type accept_fd);
1536 lws_ssl_close(struct lws *wsi);
1538 lws_ssl_SSL_CTX_destroy(struct lws_vhost *vhost);
1540 lws_ssl_context_destroy(struct lws_context *context);
1542 lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
1544 lws_ssl_client_bio_create(struct lws *wsi);
1546 lws_ssl_client_connect1(struct lws *wsi);
1548 lws_ssl_client_connect2(struct lws *wsi);
1549 #ifndef LWS_NO_SERVER
1551 lws_context_init_server_ssl(struct lws_context_creation_info *info,
1552 struct lws_vhost *vhost);
1554 #define lws_context_init_server_ssl(_a, _b) (0)
1557 lws_ssl_destroy(struct lws_vhost *vhost);
1561 #ifdef LWS_USE_HTTP2
1563 lws_context_init_http2_ssl(struct lws_context *context);
1565 #define lws_context_init_http2_ssl(_a)
1570 static LWS_INLINE void
1571 lws_pt_mutex_init(struct lws_context_per_thread *pt)
1573 pthread_mutex_init(&pt->lock, NULL);
1575 static LWS_INLINE void
1576 lws_pt_lock(struct lws_context_per_thread *pt)
1578 pthread_mutex_lock(&pt->lock);
1581 static LWS_INLINE void
1582 lws_pt_unlock(struct lws_context_per_thread *pt)
1584 pthread_mutex_unlock(&pt->lock);
1587 #define lws_pt_mutex_init(_a) (void)(_a)
1588 #define lws_pt_lock(_a) (void)(_a)
1589 #define lws_pt_unlock(_a) (void)(_a)
1592 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1593 lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1595 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1596 lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
1598 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1599 lws_ssl_pending_no_ssl(struct lws *wsi);
1601 #ifdef LWS_WITH_HTTP_PROXY
1602 struct lws_rewrite {
1603 hubbub_parser *parser;
1604 hubbub_parser_optparams params;
1605 const char *from, *to;
1606 int from_len, to_len;
1607 unsigned char *p, *end;
1610 static LWS_INLINE int hstrcmp(hubbub_string *s, const char *p, int len)
1615 return strncmp((const char *)s->ptr, p, len);
1617 typedef hubbub_error (*hubbub_callback_t)(const hubbub_token *token, void *pw);
1618 LWS_EXTERN struct lws_rewrite *
1619 lws_rewrite_create(struct lws *wsi, hubbub_callback_t cb, const char *from, const char *to);
1621 lws_rewrite_destroy(struct lws_rewrite *r);
1623 lws_rewrite_parse(struct lws_rewrite *r, const unsigned char *in, int in_len);
1626 #ifndef LWS_NO_CLIENT
1627 LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
1629 struct lws_pollfd *pollfd);
1630 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1631 lws_http_transaction_completed_client(struct lws *wsi);
1632 #ifdef LWS_OPENSSL_SUPPORT
1634 lws_context_init_client_ssl(struct lws_context_creation_info *info,
1635 struct lws_vhost *vhost);
1637 #define lws_context_init_client_ssl(_a, _b) (0)
1639 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1640 lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
1642 lws_decode_ssl_error(void);
1644 #define lws_context_init_client_ssl(_a, _b) (0)
1645 #define lws_handshake_client(_a, _b, _c) (0)
1649 _lws_rx_flow_control(struct lws *wsi);
1652 _lws_change_pollfd(struct lws *wsi, int _and, int _or, struct lws_pollargs *pa);
1654 #ifndef LWS_NO_SERVER
1656 lws_server_socket_service(struct lws_context *context, struct lws *wsi,
1657 struct lws_pollfd *pollfd);
1659 lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
1661 _lws_server_listen_accept_flow_control(struct lws *twsi, int on);
1663 #define lws_server_socket_service(_a, _b, _c) (0)
1664 #define lws_handshake_server(_a, _b, _c) (0)
1665 #define _lws_server_listen_accept_flow_control(a, b) (0)
1669 lws_get_addresses(struct lws_context *context, void *ads, char *name,
1670 int name_len, char *rip, int rip_len);
1673 lws_cgi_kill_terminated(struct lws_context_per_thread *pt);
1676 lws_protocol_init(struct lws_context *context);
1682 lws_realloc(void *ptr, size_t size);
1684 LWS_EXTERN void * LWS_WARN_UNUSED_RESULT
1685 lws_zalloc(size_t size);
1687 #define lws_malloc(S) lws_realloc(NULL, S)
1688 #define lws_free(P) lws_realloc(P, 0)
1689 #define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
1693 lws_plat_delete_socket_from_fds(struct lws_context *context,
1694 struct lws *wsi, int m);
1696 lws_plat_insert_socket_into_fds(struct lws_context *context,
1699 lws_plat_service_periodic(struct lws_context *context);
1702 lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
1703 struct lws_pollfd *pfd);
1705 lws_plat_context_early_init(void);
1707 lws_plat_context_early_destroy(struct lws_context *context);
1709 lws_plat_context_late_destroy(struct lws_context *context);
1711 lws_poll_listen_fd(struct lws_pollfd *fd);
1713 lws_plat_service(struct lws_context *context, int timeout_ms);
1714 LWS_EXTERN LWS_VISIBLE int
1715 lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi);
1717 lws_plat_init(struct lws_context *context,
1718 struct lws_context_creation_info *info);
1720 lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
1721 LWS_EXTERN unsigned long long
1722 time_in_microseconds(void);
1723 LWS_EXTERN const char * LWS_WARN_UNUSED_RESULT
1724 lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
1726 LWS_EXTERN int LWS_WARN_UNUSED_RESULT
1727 lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len);