LWS_VISIBLE struct libwebsocket_context * libwebsocket_create_context(struct lws_context_creation_info *info) { struct libwebsocket_context *context = NULL; char *p; #ifndef LWS_NO_DAEMONIZE int pid_daemon = get_daemonize_pid(); #endif lwsl_notice("Initial logging level %d\n", log_level); lwsl_notice("Library version: %s\n", library_version); #ifdef LWS_USE_IPV6 if (!(info->options & LWS_SERVER_OPTION_DISABLE_IPV6)) lwsl_notice("IPV6 compiled in and enabled\n"); else lwsl_notice("IPV6 compiled in but disabled\n"); #else lwsl_notice("IPV6 not compiled in\n"); #endif #ifdef LWS_USE_LIBEV if (info->options & LWS_SERVER_OPTION_LIBEV) lwsl_notice("libev support compiled in and enabled\n"); else lwsl_notice("libev support compiled in but disabled\n"); #else lwsl_notice("libev support not compiled in\n"); #endif lwsl_info(" LWS_MAX_HEADER_LEN: %u\n", LWS_MAX_HEADER_LEN); lwsl_info(" LWS_MAX_PROTOCOLS: %u\n", LWS_MAX_PROTOCOLS); #ifndef LWS_NO_EXTENSIONS lwsl_info(" LWS_MAX_EXTENSIONS_ACTIVE: %u\n", LWS_MAX_EXTENSIONS_ACTIVE); #else lwsl_notice(" Configured without extension support\n"); #endif lwsl_info(" SPEC_LATEST_SUPPORTED: %u\n", SPEC_LATEST_SUPPORTED); lwsl_info(" AWAITING_TIMEOUT: %u\n", AWAITING_TIMEOUT); lwsl_info(" SYSTEM_RANDOM_FILEPATH: '%s'\n", SYSTEM_RANDOM_FILEPATH); lwsl_info(" LWS_MAX_ZLIB_CONN_BUFFER: %u\n", LWS_MAX_ZLIB_CONN_BUFFER); if (lws_plat_context_early_init()) return NULL; context = (struct libwebsocket_context *) malloc(sizeof(struct libwebsocket_context)); if (!context) { lwsl_err("No memory for websocket context\n"); return NULL; } memset(context, 0, sizeof(*context)); #ifndef LWS_NO_DAEMONIZE context->started_with_parent = pid_daemon; lwsl_notice(" Started with daemon pid %d\n", pid_daemon); #endif context->listen_service_extraseen = 0; context->protocols = info->protocols; context->listen_port = info->port; context->http_proxy_port = 0; context->http_proxy_address[0] = '\0'; context->options = info->options; context->iface = info->iface; /* to reduce this allocation, */ context->max_fds = getdtablesize(); lwsl_notice(" static allocation: %u + (%u x %u fds) = %u bytes\n", sizeof(struct libwebsocket_context), sizeof(struct libwebsocket_pollfd) + sizeof(struct libwebsocket *), context->max_fds, sizeof(struct libwebsocket_context) + ((sizeof(struct libwebsocket_pollfd) + sizeof(struct libwebsocket *)) * context->max_fds)); context->fds = (struct libwebsocket_pollfd *) malloc(sizeof(struct libwebsocket_pollfd) * context->max_fds); if (context->fds == NULL) { lwsl_err("Unable to allocate fds array for %d connections\n", context->max_fds); free(context); return NULL; } context->lws_lookup = (struct libwebsocket **) malloc(sizeof(struct libwebsocket *) * context->max_fds); if (context->lws_lookup == NULL) { lwsl_err( "Unable to allocate lws_lookup array for %d connections\n", context->max_fds); free(context->fds); free(context); return NULL; } memset(context->lws_lookup, 0, sizeof(struct libwebsocket *) * context->max_fds); if (lws_plat_init_fd_tables(context)) { free(context->lws_lookup); free(context->fds); free(context); return NULL; } #ifndef LWS_NO_EXTENSIONS context->extensions = info->extensions; #endif context->user_space = info->user; strcpy(context->canonical_hostname, "unknown"); #ifndef LWS_NO_SERVER if (!(info->options & LWS_SERVER_OPTION_SKIP_SERVER_CANONICAL_NAME)) { /* find canonical hostname */ gethostname((char *)context->canonical_hostname, sizeof(context->canonical_hostname) - 1); lwsl_notice(" canonical_hostname = %s\n", context->canonical_hostname); } #endif /* split the proxy ads:port if given */ if (info->http_proxy_address) { strncpy(context->http_proxy_address, info->http_proxy_address, sizeof(context->http_proxy_address) - 1); context->http_proxy_address[ sizeof(context->http_proxy_address) - 1] = '\0'; context->http_proxy_port = info->http_proxy_port; } else { #ifdef HAVE_GETENV p = getenv("http_proxy"); if (p) { strncpy(context->http_proxy_address, p, sizeof(context->http_proxy_address) - 1); context->http_proxy_address[ sizeof(context->http_proxy_address) - 1] = '\0'; p = strchr(context->http_proxy_address, ':'); if (p == NULL) { lwsl_err("http_proxy needs to be ads:port\n"); goto bail; } *p = '\0'; context->http_proxy_port = atoi(p + 1); } #endif } if (context->http_proxy_address[0]) lwsl_notice(" Proxy %s:%u\n", context->http_proxy_address, context->http_proxy_port); lwsl_notice( " per-conn mem: %u + %u headers + protocol rx buf\n", sizeof(struct libwebsocket), sizeof(struct allocated_headers)); if (lws_context_init_server_ssl(info, context)) goto bail; if (lws_context_init_client_ssl(info, context)) goto bail; if (lws_context_init_server(info, context)) goto bail; /* * drop any root privs for this process * to listen on port < 1023 we would have needed root, but now we are * listening, we don't want the power for anything else */ lws_plat_drop_app_privileges(info); /* initialize supported protocols */ for (context->count_protocols = 0; info->protocols[context->count_protocols].callback; context->count_protocols++) { lwsl_parser(" Protocol: %s\n", info->protocols[context->count_protocols].name); info->protocols[context->count_protocols].owning_server = context; info->protocols[context->count_protocols].protocol_index = context->count_protocols; /* * inform all the protocols that they are doing their one-time * initialization if they want to */ info->protocols[context->count_protocols].callback(context, NULL, LWS_CALLBACK_PROTOCOL_INIT, NULL, NULL, 0); } /* * give all extensions a chance to create any per-context * allocations they need */ if (info->port != CONTEXT_PORT_NO_LISTEN) { if (lws_ext_callback_for_each_extension_type(context, NULL, LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT, NULL, 0) < 0) goto bail; } else if (lws_ext_callback_for_each_extension_type(context, NULL, LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT, NULL, 0) < 0) goto bail; return context; bail: libwebsocket_context_destroy(context); return NULL; }
LWS_VISIBLE struct libwebsocket_context * libwebsocket_create_context(struct lws_context_creation_info *info) { struct libwebsocket_context *context = NULL; char *p; #ifdef _WIN32 int i; #endif int pid_daemon = get_daemonize_pid(); lwsl_notice("Initial logging level %d\n", log_level); lwsl_notice("Library version: %s\n", library_version); #ifdef LWS_USE_IPV6 if (!(info->options & LWS_SERVER_OPTION_DISABLE_IPV6)) lwsl_notice("IPV6 compiled in and enabled\n"); else lwsl_notice("IPV6 compiled in but disabled\n"); #else lwsl_notice("IPV6 not compiled in\n"); #endif lws_feature_status_libev(info); lwsl_info(" LWS_MAX_HEADER_LEN: %u\n", LWS_MAX_HEADER_LEN); lwsl_info(" LWS_MAX_PROTOCOLS: %u\n", LWS_MAX_PROTOCOLS); lwsl_info(" SPEC_LATEST_SUPPORTED: %u\n", SPEC_LATEST_SUPPORTED); lwsl_info(" AWAITING_TIMEOUT: %u\n", AWAITING_TIMEOUT); lwsl_info(" SYSTEM_RANDOM_FILEPATH: '%s'\n", SYSTEM_RANDOM_FILEPATH); lwsl_info(" LWS_MAX_ZLIB_CONN_BUFFER: %u\n", LWS_MAX_ZLIB_CONN_BUFFER); if (lws_plat_context_early_init()) return NULL; context = lws_zalloc(sizeof(struct libwebsocket_context)); if (!context) { lwsl_err("No memory for websocket context\n"); return NULL; } if (pid_daemon) { context->started_with_parent = pid_daemon; lwsl_notice(" Started with daemon pid %d\n", pid_daemon); } context->listen_service_extraseen = 0; context->protocols = info->protocols; context->token_limits = info->token_limits; context->listen_port = info->port; context->http_proxy_port = 0; context->http_proxy_address[0] = '\0'; context->options = info->options; context->iface = info->iface; context->ka_time = info->ka_time; context->ka_interval = info->ka_interval; context->ka_probes = info->ka_probes; if (!info->ka_interval && info->ka_time > 0) { lwsl_err("info->ka_interval can't be 0 if ka_time used\n"); return NULL; } #ifdef LWS_USE_LIBEV /* (Issue #264) In order to *avoid breaking backwards compatibility*, we * enable libev mediated SIGINT handling with a default handler of * libwebsocket_sigint_cb. The handler can be overridden or disabled * by invoking libwebsocket_sigint_cfg after creating the context, but * before invoking libwebsocket_initloop: */ context->use_ev_sigint = 1; context->lws_ev_sigint_cb = &libwebsocket_sigint_cb; #endif /* LWS_USE_LIBEV */ /* to reduce this allocation, */ context->max_fds = getdtablesize(); lwsl_notice(" static allocation: %u + (%u x %u fds) = %u bytes\n", sizeof(struct libwebsocket_context), sizeof(struct libwebsocket_pollfd) + sizeof(struct libwebsocket *), context->max_fds, sizeof(struct libwebsocket_context) + ((sizeof(struct libwebsocket_pollfd) + sizeof(struct libwebsocket *)) * context->max_fds)); context->fds = lws_zalloc(sizeof(struct libwebsocket_pollfd) * context->max_fds); if (context->fds == NULL) { lwsl_err("Unable to allocate fds array for %d connections\n", context->max_fds); goto bail; } if (lws_plat_init_lookup(context)) { goto bail; } if (lws_plat_init_fd_tables(context)) { goto bail; } lws_context_init_extensions(info, context); context->user_space = info->user; strcpy(context->canonical_hostname, "unknown"); lws_server_get_canonical_hostname(context, info); /* split the proxy ads:port if given */ if (info->http_proxy_address) { strncpy(context->http_proxy_address, info->http_proxy_address, sizeof(context->http_proxy_address) - 1); context->http_proxy_address[ sizeof(context->http_proxy_address) - 1] = '\0'; context->http_proxy_port = info->http_proxy_port; } else { #ifdef LWS_HAVE_GETENV p = getenv("http_proxy"); if (p) { strncpy(context->http_proxy_address, p, sizeof(context->http_proxy_address) - 1); context->http_proxy_address[ sizeof(context->http_proxy_address) - 1] = '\0'; p = strchr(context->http_proxy_address, ':'); if (p == NULL) { lwsl_err("http_proxy needs to be ads:port\n"); goto bail; } *p = '\0'; context->http_proxy_port = atoi(p + 1); } #endif } if (context->http_proxy_address[0]) lwsl_notice(" Proxy %s:%u\n", context->http_proxy_address, context->http_proxy_port); lwsl_notice( " per-conn mem: %u + %u headers + protocol rx buf\n", sizeof(struct libwebsocket), sizeof(struct allocated_headers)); if (lws_context_init_server_ssl(info, context)) goto bail; if (lws_context_init_client_ssl(info, context)) goto bail; if (lws_context_init_server(info, context)) goto bail; /* * drop any root privs for this process * to listen on port < 1023 we would have needed root, but now we are * listening, we don't want the power for anything else */ lws_plat_drop_app_privileges(info); /* initialize supported protocols */ for (context->count_protocols = 0; info->protocols[context->count_protocols].callback; context->count_protocols++) { lwsl_parser(" Protocol: %s\n", info->protocols[context->count_protocols].name); info->protocols[context->count_protocols].owning_server = context; info->protocols[context->count_protocols].protocol_index = context->count_protocols; /* * inform all the protocols that they are doing their one-time * initialization if they want to */ info->protocols[context->count_protocols].callback(context, NULL, LWS_CALLBACK_PROTOCOL_INIT, NULL, NULL, 0); } /* * give all extensions a chance to create any per-context * allocations they need */ if (info->port != CONTEXT_PORT_NO_LISTEN) { if (lws_ext_callback_for_each_extension_type(context, NULL, LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT, NULL, 0) < 0) goto bail; } else if (lws_ext_callback_for_each_extension_type(context, NULL, LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT, NULL, 0) < 0) goto bail; return context; bail: libwebsocket_context_destroy(context); return NULL; }