void wsclient::ConnectionData::create_session(wsclient::ParseCmdArgs args_parsed, char* file_to_record_in) { const char *parsed_path_ptr = NULL; const char *server_address_char_array = NULL; const char *connection_protocol_char_array = NULL; port_used = args_parsed.get_port_used(); is_there_first_query = args_parsed.get_query_existance(); if(is_there_first_query) { first_query = args_parsed.get_first_query(); } if (lws_parse_uri(args_parsed.get_char_server_info(), &connection_protocol_char_array, &server_address_char_array, &port_used, &parsed_path_ptr)) { print_usage(); exit(0); } server_path += parsed_path_ptr; if (!strcmp(connection_protocol_char_array, "ws")) { ssl_used = 0; if(!port_used) port_used = 80; } if (!strcmp(connection_protocol_char_array, "wss")) { ssl_used = 1; if(!port_used) port_used = 443; } connection_origin = args_parsed.get_connection_origin(); connection_protocol = connection_protocol_char_array; server_address = server_address_char_array; if(args_parsed.get_session_record()) record_iput_data(args_parsed.get_char_record_name(), file_to_record_in); }
/* * Notice: trashes i and url */ static struct lws * lws_acme_client_connect(struct lws_context *context, struct lws_vhost *vh, struct lws **pwsi, struct lws_client_connect_info *i, char *url, const char *method) { const char *prot, *p; char path[200], _url[256]; struct lws *wsi; memset(i, 0, sizeof(*i)); i->port = 443; lws_strncpy(_url, url, sizeof(_url)); if (lws_parse_uri(_url, &prot, &i->address, &i->port, &p)) { lwsl_err("unable to parse uri %s\n", url); return NULL; } /* add back the leading / on path */ path[0] = '/'; lws_strncpy(path + 1, p, sizeof(path) - 1); i->path = path; i->context = context; i->vhost = vh; i->ssl_connection = 1; i->host = i->address; i->origin = i->address; i->method = method; i->pwsi = pwsi; i->protocol = "lws-acme-client"; wsi = lws_client_connect_via_info(i); if (!wsi) { lws_snprintf(path, sizeof(path) - 1, "Unable to connect to %s", url); lwsl_notice("%s: %s\n", __func__, path); lws_acme_report_status(vh, LWS_CUS_FAILED, path); } return wsi; }
int lws_client_interpret_server_handshake(struct lws *wsi) { int n, len, okay = 0, isErrorCodeReceived = 0, port = 0, ssl = 0; struct lws_context *context = wsi->context; int close_reason = LWS_CLOSE_STATUS_PROTOCOL_ERR; const char *pc, *prot, *ads = NULL, *path; char *p; #ifndef LWS_NO_EXTENSIONS struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; char *sb = (char *)&pt->serv_buf[0]; const struct lws_ext_options *opts; const struct lws_extension *ext; char ext_name[128]; const char *c, *a; char ignore; int more = 1; void *v; #endif /* * well, what the server sent looked reasonable for syntax. * Now let's confirm it sent all the necessary headers */ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP); if (!p) { lwsl_info("no URI\n"); goto bail3; } n = atoi(p); if (n == 301 || n == 302 || n == 303 || n == 307 || n == 308) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_LOCATION); if (!p) goto bail3; if (lws_parse_uri(p, &prot, &ads, &port, &path)) goto bail3; if (!strcmp(prot, "wss://") || !strcmp(prot, "https://")) ssl = 1; if (lws_client_reset(wsi, ssl, ads, port, path, ads)) { lwsl_err("Redirect failed\n"); goto bail3; } return 0; } if (lws_hdr_total_length(wsi, WSI_TOKEN_ACCEPT) == 0) { lwsl_info("no ACCEPT\n"); isErrorCodeReceived = 1; goto bail3; } if (p && strncmp(p, "101", 3)) { lwsl_warn( "lws_client_handshake: got bad HTTP response '%s'\n", p); goto bail3; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_UPGRADE); if (!p) { lwsl_info("no UPGRADE\n"); goto bail3; } strtolower(p); if (strcmp(p, "websocket")) { lwsl_warn( "lws_client_handshake: got bad Upgrade header '%s'\n", p); goto bail3; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_CONNECTION); if (!p) { lwsl_info("no Connection hdr\n"); goto bail3; } strtolower(p); if (strcmp(p, "upgrade")) { lwsl_warn("lws_client_int_s_hs: bad header %s\n", p); goto bail3; } pc = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS); if (!pc) { lwsl_parser("lws_client_int_s_hs: no protocol list\n"); } else lwsl_parser("lws_client_int_s_hs: protocol list '%s'\n", pc); /* * confirm the protocol the server wants to talk was in the list * of protocols we offered */ len = lws_hdr_total_length(wsi, WSI_TOKEN_PROTOCOL); if (!len) { lwsl_info("lws_client_int_s_hs: WSI_TOKEN_PROTOCOL is null\n"); /* * no protocol name to work from, * default to first protocol */ wsi->protocol = &context->protocols[0]; goto check_extensions; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_PROTOCOL); len = strlen(p); while (pc && *pc && !okay) { if (!strncmp(pc, p, len) && (pc[len] == ',' || pc[len] == '\0')) { okay = 1; continue; } while (*pc && *pc++ != ',') ; while (*pc && *pc == ' ') pc++; } if (!okay) { lwsl_err("lws_client_int_s_hs: got bad protocol %s\n", p); goto bail2; } /* * identify the selected protocol struct and set it */ n = 0; wsi->protocol = NULL; while (context->protocols[n].callback && !wsi->protocol) { if (strcmp(p, context->protocols[n].name) == 0) { wsi->protocol = &context->protocols[n]; break; } n++; } if (wsi->protocol == NULL) { lwsl_err("lws_client_int_s_hs: fail protocol %s\n", p); goto bail2; } check_extensions: #ifndef LWS_NO_EXTENSIONS /* instantiate the accepted extensions */ if (!lws_hdr_total_length(wsi, WSI_TOKEN_EXTENSIONS)) { lwsl_ext("no client extenstions allowed by server\n"); goto check_accept; } /* * break down the list of server accepted extensions * and go through matching them or identifying bogons */ if (lws_hdr_copy(wsi, sb, LWS_MAX_SOCKET_IO_BUF, WSI_TOKEN_EXTENSIONS) < 0) { lwsl_warn("ext list from server failed to copy\n"); goto bail2; } c = sb; n = 0; ignore = 0; a = NULL; while (more) { if (*c && (*c != ',' && *c != '\t')) { if (*c == ';') { ignore = 1; if (!a) a = c + 1; } if (ignore || *c == ' ') { c++; continue; } ext_name[n] = *c++; if (n < sizeof(ext_name) - 1) n++; continue; } ext_name[n] = '\0'; ignore = 0; if (!*c) more = 0; else { c++; if (!n) continue; } /* check we actually support it */ lwsl_notice("checking client ext %s\n", ext_name); n = 0; ext = lws_get_context(wsi)->extensions; while (ext && ext->callback) { if (strcmp(ext_name, ext->name)) { ext++; continue; } n = 1; lwsl_notice("instantiating client ext %s\n", ext_name); /* instantiate the extension on this conn */ wsi->active_extensions[wsi->count_act_ext] = ext; /* allow him to construct his ext instance */ ext->callback(lws_get_context(wsi), ext, wsi, LWS_EXT_CB_CLIENT_CONSTRUCT, (void *)&wsi->act_ext_user[wsi->count_act_ext], (void *)&opts, 0); /* * allow the user code to override ext defaults if it * wants to */ ext_name[0] = '\0'; if (user_callback_handle_rxflow(wsi->protocol->callback, wsi, LWS_CALLBACK_WS_EXT_DEFAULTS, (char *)ext->name, ext_name, sizeof(ext_name))) goto bail2; if (ext_name[0] && lws_ext_parse_options(ext, wsi, wsi->act_ext_user[ wsi->count_act_ext], opts, ext_name, strlen(ext_name))) { lwsl_err("%s: unable to parse user defaults '%s'", __func__, ext_name); goto bail2; } /* * give the extension the server options */ if (a && lws_ext_parse_options(ext, wsi, wsi->act_ext_user[wsi->count_act_ext], opts, a, c - a)) { lwsl_err("%s: unable to parse remote def '%s'", __func__, a); goto bail2; } if (ext->callback(lws_get_context(wsi), ext, wsi, LWS_EXT_CB_OPTION_CONFIRM, wsi->act_ext_user[wsi->count_act_ext], NULL, 0)) { lwsl_err("%s: ext %s rejects server options %s", ext->name, a); goto bail2; } wsi->count_act_ext++; ext++; } if (n == 0) { lwsl_warn("Unknown ext '%s'!\n", ext_name); goto bail2; } a = NULL; n = 0; } check_accept: #endif /* * Confirm his accept token is the one we precomputed */ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_ACCEPT); if (strcmp(p, wsi->u.hdr.ah->initial_handshake_hash_base64)) { lwsl_warn("lws_client_int_s_hs: accept '%s' wrong vs '%s'\n", p, wsi->u.hdr.ah->initial_handshake_hash_base64); goto bail2; } /* allocate the per-connection user memory (if any) */ if (lws_ensure_user_space(wsi)) { lwsl_err("Problem allocating wsi user mem\n"); goto bail2; } /* * we seem to be good to go, give client last chance to check * headers and OK it */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH, wsi->user_space, NULL, 0)) goto bail2; /* clear his proxy connection timeout */ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0); /* free up his parsing allocations */ lws_free_header_table(wsi); lws_union_transition(wsi, LWSCM_WS_CLIENT); wsi->state = LWSS_ESTABLISHED; wsi->rxflow_change_to = LWS_RXFLOW_ALLOW; /* * create the frame buffer for this connection according to the * size mentioned in the protocol definition. If 0 there, then * use a big default for compatibility */ n = wsi->protocol->rx_buffer_size; if (!n) n = LWS_MAX_SOCKET_IO_BUF; n += LWS_PRE; wsi->u.ws.rx_ubuf = lws_malloc(n + 4 /* 0x0000ffff zlib */); if (!wsi->u.ws.rx_ubuf) { lwsl_err("Out of Mem allocating rx buffer %d\n", n); goto bail2; } wsi->u.ws.rx_ubuf_alloc = n; lwsl_info("Allocating client RX buffer %d\n", n); if (setsockopt(wsi->sock, SOL_SOCKET, SO_SNDBUF, (const char *)&n, sizeof n)) { lwsl_warn("Failed to set SNDBUF to %d", n); goto bail3; } lwsl_debug("handshake OK for protocol %s\n", wsi->protocol->name); /* call him back to inform him he is up */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_ESTABLISHED, wsi->user_space, NULL, 0)) goto bail3; #ifndef LWS_NO_EXTENSIONS /* * inform all extensions, not just active ones since they * already know */ ext = context->extensions; while (ext && ext->callback) { v = NULL; for (n = 0; n < wsi->count_act_ext; n++) if (wsi->active_extensions[n] == ext) v = wsi->act_ext_user[n]; ext->callback(context, ext, wsi, LWS_EXT_CB_ANY_WSI_ESTABLISHED, v, NULL, 0); ext++; } #endif return 0; bail3: close_reason = LWS_CLOSE_STATUS_NOSTATUS; bail2: if (wsi->protocol && wsi->state == LWSS_ESTABLISHED) { if (isErrorCodeReceived && p) { wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_CONNECTION_ERROR, wsi->user_space, p, (unsigned int)strlen(p)); } else { wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_CONNECTION_ERROR, wsi->user_space, NULL, 0); } } lwsl_info("closing connection due to bail2 connection error\n"); /* closing will free up his parsing allocations */ lws_close_free_wsi(wsi, close_reason); return 1; }
int main(int argc, char **argv) { int n = 0, ret = 0, port = 7681, use_ssl = 0, ietf_version = -1; unsigned int rl_dumb = 0, rl_mirror = 0, do_ws = 1, pp_secs = 0; struct lws_context_creation_info info; struct lws_client_connect_info i; struct lws_context *context; const char *prot, *p; char path[300]; char cert_path[1024] = ""; char key_path[1024] = ""; char ca_path[1024] = ""; memset(&info, 0, sizeof info); lwsl_notice("libwebsockets test client - license LGPL2.1+SLE\n"); lwsl_notice("(C) Copyright 2010-2016 Andy Green <*****@*****.**>\n"); if (argc < 2) goto usage; while (n >= 0) { n = getopt_long(argc, argv, "Snuv:hsp:d:lC:K:A:P:", options, NULL); if (n < 0) continue; switch (n) { case 'd': lws_set_log_level(atoi(optarg), NULL); break; case 's': /* lax SSL, allow selfsigned, skip checking hostname */ use_ssl = LCCSCF_USE_SSL | LCCSCF_ALLOW_SELFSIGNED | LCCSCF_SKIP_SERVER_CERT_HOSTNAME_CHECK; break; case 'S': /* Strict SSL, no selfsigned, check server hostname */ use_ssl = LCCSCF_USE_SSL; break; case 'p': port = atoi(optarg); break; case 'P': pp_secs = atoi(optarg); lwsl_notice("Setting pingpong interval to %d\n", pp_secs); break; case 'l': longlived = 1; break; case 'v': ietf_version = atoi(optarg); break; case 'u': deny_deflate = 1; break; case 'n': flag_no_mirror_traffic = 1; lwsl_notice("Disabled sending mirror data (for pingpong testing)\n"); break; case 'C': strncpy(cert_path, optarg, sizeof(cert_path) - 1); cert_path[sizeof(cert_path) - 1] = '\0'; break; case 'K': strncpy(key_path, optarg, sizeof(key_path) - 1); key_path[sizeof(key_path) - 1] = '\0'; break; case 'A': strncpy(ca_path, optarg, sizeof(ca_path) - 1); ca_path[sizeof(ca_path) - 1] = '\0'; break; #if defined(LWS_USE_POLARSSL) #else #if defined(LWS_USE_MBEDTLS) #else #if defined(LWS_OPENSSL_SUPPORT) && defined(LWS_HAVE_SSL_CTX_set1_param) case 'R': strncpy(crl_path, optarg, sizeof(crl_path) - 1); crl_path[sizeof(crl_path) - 1] = '\0'; break; #endif #endif #endif case 'h': goto usage; } } if (optind >= argc) goto usage; signal(SIGINT, sighandler); memset(&i, 0, sizeof(i)); i.port = port; if (lws_parse_uri(argv[optind], &prot, &i.address, &i.port, &p)) goto usage; /* add back the leading / on path */ path[0] = '/'; strncpy(path + 1, p, sizeof(path) - 2); path[sizeof(path) - 1] = '\0'; i.path = path; if (!strcmp(prot, "http") || !strcmp(prot, "ws")) use_ssl = 0; if (!strcmp(prot, "https") || !strcmp(prot, "wss")) if (!use_ssl) use_ssl = LCCSCF_USE_SSL; /* * create the websockets context. This tracks open connections and * knows how to route any traffic and which protocol version to use, * and if each connection is client or server side. * * For this client-only demo, we tell it to not listen on any port. */ info.port = CONTEXT_PORT_NO_LISTEN; info.protocols = protocols; info.gid = -1; info.uid = -1; info.ws_ping_pong_interval = pp_secs; if (use_ssl) { info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT; /* * If the server wants us to present a valid SSL client certificate * then we can set it up here. */ if (cert_path[0]) info.ssl_cert_filepath = cert_path; if (key_path[0]) info.ssl_private_key_filepath = key_path; /* * A CA cert and CRL can be used to validate the cert send by the server */ if (ca_path[0]) info.ssl_ca_filepath = ca_path; #if defined(LWS_USE_POLARSSL) #else #if defined(LWS_USE_MBEDTLS) #else #if defined(LWS_OPENSSL_SUPPORT) && defined(LWS_HAVE_SSL_CTX_set1_param) else if (crl_path[0]) lwsl_notice("WARNING, providing a CRL requires a CA cert!\n"); #endif #endif #endif } if (use_ssl & LCCSCF_USE_SSL) lwsl_notice(" Using SSL\n"); else lwsl_notice(" SSL disabled\n"); if (use_ssl & LCCSCF_ALLOW_SELFSIGNED) lwsl_notice(" Selfsigned certs allowed\n"); else lwsl_notice(" Cert must validate correctly (use -s to allow selfsigned)\n"); if (use_ssl & LCCSCF_SKIP_SERVER_CERT_HOSTNAME_CHECK) lwsl_notice(" Skipping peer cert hostname check\n"); else lwsl_notice(" Requiring peer cert hostname matches\n"); context = lws_create_context(&info); if (context == NULL) { fprintf(stderr, "Creating libwebsocket context failed\n"); return 1; } i.context = context; i.ssl_connection = use_ssl; i.host = i.address; i.origin = i.address; i.ietf_version_or_minus_one = ietf_version; i.client_exts = exts; if (!strcmp(prot, "http") || !strcmp(prot, "https")) { lwsl_notice("using %s mode (non-ws)\n", prot); i.method = "GET"; do_ws = 0; } else lwsl_notice("using %s mode (ws)\n", prot); /* * sit there servicing the websocket context to handle incoming * packets, and drawing random circles on the mirror protocol websocket * * nothing happens until the client websocket connection is * asynchronously established... calling lws_client_connect() only * instantiates the connection logically, lws_service() progresses it * asynchronously. */ while (!force_exit) { if (do_ws) { if (!wsi_dumb && ratelimit_connects(&rl_dumb, 2u)) { lwsl_notice("dumb: connecting\n"); i.protocol = protocols[PROTOCOL_DUMB_INCREMENT].name; i.pwsi = &wsi_dumb; lws_client_connect_via_info(&i); } if (!wsi_mirror && ratelimit_connects(&rl_mirror, 2u)) { lwsl_notice("mirror: connecting\n"); i.protocol = protocols[PROTOCOL_LWS_MIRROR].name; i.pwsi = &wsi_mirror; wsi_mirror = lws_client_connect_via_info(&i); } } else if (!wsi_dumb && ratelimit_connects(&rl_dumb, 2u)) { lwsl_notice("http: connecting\n"); i.pwsi = &wsi_dumb; lws_client_connect_via_info(&i); } lws_service(context, 500); } lwsl_err("Exiting\n"); lws_context_destroy(context); return ret; usage: fprintf(stderr, "Usage: libwebsockets-test-client " "<server address> [--port=<p>] " "[--ssl] [-k] [-v <ver>] " "[-d <log bitfield>] [-l]\n"); return 1; }
void FLwsWebSocket::Connect() { bIsConnecting = true; if (LwsContext == nullptr) { DelayConnectionError(TEXT("Invalid context")); return; } if (LwsConnection != nullptr) { DelayConnectionError(TEXT("Already connected")); return; } struct lws_client_connect_info ConnectInfo = {}; ConnectInfo.context = LwsContext; FTCHARToUTF8 UrlUtf8(*Url); const char *UrlProtocol, *TmpUrlPath; char UrlPath[300]; if (lws_parse_uri((char*) UrlUtf8.Get(), &UrlProtocol, &ConnectInfo.address, &ConnectInfo.port, &TmpUrlPath)) { DelayConnectionError(TEXT("Bad URL")); return; } UrlPath[0] = '/'; FCStringAnsi::Strncpy(UrlPath+1, TmpUrlPath, sizeof(UrlPath)-2); UrlPath[sizeof(UrlPath)-1]='\0'; ConnectInfo.path = UrlPath; ConnectInfo.host = ConnectInfo.address; ConnectInfo.origin = ConnectInfo.address; ConnectInfo.ietf_version_or_minus_one = -1; ConnectInfo.client_exts = LwsExtensions; // Use SSL and require a valid cerver cert if (FCStringAnsi::Stricmp(UrlProtocol, "wss") == 0 ) { ConnectInfo.ssl_connection = 1; } // Use SSL, and allow self-signed certs else if (FCStringAnsi::Stricmp(UrlProtocol, "wss+insecure") == 0 ) { ConnectInfo.ssl_connection = 2; } // No encryption else if (FCStringAnsi::Stricmp(UrlProtocol, "ws") == 0 ) { ConnectInfo.ssl_connection = 0; } // Else return an error else { DelayConnectionError(FString::Printf(TEXT("Bad protocol '%s'. Use either 'ws', 'wss', or 'wss+insecure'"), UTF8_TO_TCHAR(UrlProtocol))); return; } FString Combined = FString::Join(Protocols, TEXT(",")); FTCHARToUTF8 CombinedUTF8(*Combined); ConnectInfo.protocol = CombinedUTF8.Get(); ConnectInfo.userdata = this; if (lws_client_connect_via_info(&ConnectInfo) == nullptr) { DelayConnectionError(TEXT("Could not initialize connection")); } }
int lws_client_interpret_server_handshake(struct lws *wsi) { int n, port = 0, ssl = 0; int close_reason = LWS_CLOSE_STATUS_PROTOCOL_ERR; const char *prot, *ads = NULL, *path, *cce = NULL; struct allocated_headers *ah = NULL; struct lws *w = lws_client_wsi_effective(wsi); char *p, *q; char new_path[300]; lws_client_stash_destroy(wsi); ah = wsi->http.ah; if (!wsi->do_ws) { /* we are being an http client... */ #if defined(LWS_ROLE_H2) if (wsi->client_h2_alpn || wsi->client_h2_substream) { lwsl_debug("%s: %p: transitioning to h2 client\n", __func__, wsi); lws_role_transition(wsi, LWSIFR_CLIENT, LRS_ESTABLISHED, &role_ops_h2); } else #endif { #if defined(LWS_ROLE_H1) { lwsl_debug("%s: %p: transitioning to h1 client\n", __func__, wsi); lws_role_transition(wsi, LWSIFR_CLIENT, LRS_ESTABLISHED, &role_ops_h1); } #else return -1; #endif } wsi->http.ah = ah; ah->http_response = 0; } /* * well, what the server sent looked reasonable for syntax. * Now let's confirm it sent all the necessary headers * * http (non-ws) client will expect something like this * * HTTP/1.0.200 * server:.libwebsockets * content-type:.text/html * content-length:.17703 * set-cookie:.test=LWS_1456736240_336776_COOKIE;Max-Age=360000 */ wsi->http.connection_type = HTTP_CONNECTION_KEEP_ALIVE; if (!wsi->client_h2_substream) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP); if (wsi->do_ws && !p) { lwsl_info("no URI\n"); cce = "HS: URI missing"; goto bail3; } if (!p) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP1_0); wsi->http.connection_type = HTTP_CONNECTION_CLOSE; } if (!p) { cce = "HS: URI missing"; lwsl_info("no URI\n"); goto bail3; } } else { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_COLON_STATUS); if (!p) { cce = "HS: :status missing"; lwsl_info("no status\n"); goto bail3; } } n = atoi(p); if (ah) ah->http_response = n; if (n == 301 || n == 302 || n == 303 || n == 307 || n == 308) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_LOCATION); if (!p) { cce = "HS: Redirect code but no Location"; goto bail3; } /* Relative reference absolute path */ if (p[0] == '/') { #if defined(LWS_WITH_TLS) ssl = wsi->tls.use_ssl & LCCSCF_USE_SSL; #endif ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS); port = wsi->c_port; /* +1 as lws_client_reset expects leading / omitted */ path = p + 1; } /* Absolute (Full) URI */ else if (strchr(p, ':')) { if (lws_parse_uri(p, &prot, &ads, &port, &path)) { cce = "HS: URI did not parse"; goto bail3; } if (!strcmp(prot, "wss") || !strcmp(prot, "https")) ssl = 1; } /* Relative reference relative path */ else { /* This doesn't try to calculate an absolute path, * that will be left to the server */ #if defined(LWS_WITH_TLS) ssl = wsi->tls.use_ssl & LCCSCF_USE_SSL; #endif ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS); port = wsi->c_port; /* +1 as lws_client_reset expects leading / omitted */ path = new_path + 1; lws_strncpy(new_path, lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI), sizeof(new_path)); q = strrchr(new_path, '/'); if (q) lws_strncpy(q + 1, p, sizeof(new_path) - (q - new_path)); else path = p; } #if defined(LWS_WITH_TLS) if ((wsi->tls.use_ssl & LCCSCF_USE_SSL) && !ssl) { cce = "HS: Redirect attempted SSL downgrade"; goto bail3; } #endif if (!lws_client_reset(&wsi, ssl, ads, port, path, ads)) { /* there are two ways to fail out with NULL return... * simple, early problem where the wsi is intact, or * we went through with the reconnect attempt and the * wsi is already closed. In the latter case, the wsi * has beet set to NULL additionally. */ lwsl_err("Redirect failed\n"); cce = "HS: Redirect failed"; if (wsi) goto bail3; return 1; } return 0; } if (!wsi->do_ws) { /* if h1 KA is allowed, enable the queued pipeline guys */ if (!wsi->client_h2_alpn && !wsi->client_h2_substream && w == wsi) { /* ie, coming to this for the first time */ if (wsi->http.connection_type == HTTP_CONNECTION_KEEP_ALIVE) wsi->keepalive_active = 1; else { /* * Ugh... now the main http connection has seen * both sides, we learn the server doesn't * support keepalive. * * That means any guys queued on us are going * to have to be restarted from connect2 with * their own connections. */ /* * stick around telling any new guys they can't * pipeline to this server */ wsi->keepalive_rejected = 1; lws_vhost_lock(wsi->vhost); lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1, wsi->dll_client_transaction_queue_head.next) { struct lws *ww = lws_container_of(d, struct lws, dll_client_transaction_queue); /* remove him from our queue */ lws_dll_lws_remove(&ww->dll_client_transaction_queue); /* give up on pipelining */ ww->client_pipeline = 0; /* go back to "trying to connect" state */ lws_role_transition(ww, LWSIFR_CLIENT, LRS_UNCONNECTED, #if defined(LWS_ROLE_H1) &role_ops_h1); #else #if defined (LWS_ROLE_H2) &role_ops_h2); #else &role_ops_raw); #endif #endif ww->user_space = NULL; } lws_end_foreach_dll_safe(d, d1); lws_vhost_unlock(wsi->vhost); } } #ifdef LWS_WITH_HTTP_PROXY wsi->http.perform_rewrite = 0; if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE)) { if (!strncmp(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE), "text/html", 9)) wsi->http.perform_rewrite = 1; } #endif /* allocate the per-connection user memory (if any) */ if (lws_ensure_user_space(wsi)) { lwsl_err("Problem allocating wsi user mem\n"); cce = "HS: OOM"; goto bail2; } /* he may choose to send us stuff in chunked transfer-coding */ wsi->chunked = 0; wsi->chunk_remaining = 0; /* ie, next thing is chunk size */ if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_TRANSFER_ENCODING)) { wsi->chunked = !strcmp(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_TRANSFER_ENCODING), "chunked"); /* first thing is hex, after payload there is crlf */ wsi->chunk_parser = ELCP_HEX; } if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_LENGTH)) { wsi->http.rx_content_length = atoll(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_CONTENT_LENGTH)); lwsl_info("%s: incoming content length %llu\n", __func__, (unsigned long long) wsi->http.rx_content_length); wsi->http.rx_content_remain = wsi->http.rx_content_length; } else /* can't do 1.1 without a content length or chunked */ if (!wsi->chunked) wsi->http.connection_type = HTTP_CONNECTION_CLOSE; /* * we seem to be good to go, give client last chance to check * headers and OK it */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH, wsi->user_space, NULL, 0)) { cce = "HS: disallowed by client filter"; goto bail2; } /* clear his proxy connection timeout */ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0); wsi->rxflow_change_to = LWS_RXFLOW_ALLOW; /* call him back to inform him he is up */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP, wsi->user_space, NULL, 0)) { cce = "HS: disallowed at ESTABLISHED"; goto bail3; } /* * for pipelining, master needs to keep his ah... guys who * queued on him can drop it now though. */ if (w != wsi) /* free up parsing allocations for queued guy */ lws_header_table_detach(w, 0); lwsl_info("%s: client connection up\n", __func__); return 0; } #if defined(LWS_ROLE_WS) switch (lws_client_ws_upgrade(wsi, &cce)) { case 2: goto bail2; case 3: goto bail3; } return 0; #endif bail3: close_reason = LWS_CLOSE_STATUS_NOSTATUS; bail2: if (wsi->protocol) { n = 0; if (cce) n = (int)strlen(cce); wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_CONNECTION_ERROR, wsi->user_space, (void *)cce, (unsigned int)n); } wsi->already_did_cce = 1; lwsl_info("closing connection due to bail2 connection error\n"); /* closing will free up his parsing allocations */ lws_close_free_wsi(wsi, close_reason, "c hs interp"); return 1; }
int lws_client_interpret_server_handshake(struct lws *wsi) { int n, len, okay = 0, port = 0, ssl = 0; int close_reason = LWS_CLOSE_STATUS_PROTOCOL_ERR; struct lws_context *context = wsi->context; const char *pc, *prot, *ads = NULL, *path, *cce = NULL; struct allocated_headers *ah = NULL; char *p, *q; char new_path[300]; #ifndef LWS_NO_EXTENSIONS struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi]; char *sb = (char *)&pt->serv_buf[0]; const struct lws_ext_options *opts; const struct lws_extension *ext; char ext_name[128]; const char *c, *a; char ignore; int more = 1; void *v; #endif ah = wsi->u.hdr.ah; if (!wsi->do_ws) { /* we are being an http client... */ lws_union_transition(wsi, LWSCM_HTTP_CLIENT_ACCEPTED); wsi->state = LWSS_CLIENT_HTTP_ESTABLISHED; wsi->u.http.ah = ah; ah->http_response = 0; } /* * well, what the server sent looked reasonable for syntax. * Now let's confirm it sent all the necessary headers * * http (non-ws) client will expect something like this * * HTTP/1.0.200 * server:.libwebsockets * content-type:.text/html * content-length:.17703 * set-cookie:.test=LWS_1456736240_336776_COOKIE;Max-Age=360000 * * * */ wsi->u.http.connection_type = HTTP_CONNECTION_KEEP_ALIVE; p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP); if (wsi->do_ws && !p) { lwsl_info("no URI\n"); cce = "HS: URI missing"; goto bail3; } if (!p) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP1_0); wsi->u.http.connection_type = HTTP_CONNECTION_CLOSE; } if (!p) { cce = "HS: URI missing"; lwsl_info("no URI\n"); goto bail3; } n = atoi(p); if (ah) ah->http_response = n; if (n == 301 || n == 302 || n == 303 || n == 307 || n == 308) { p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_LOCATION); if (!p) { cce = "HS: Redirect code but no Location"; goto bail3; } /* Relative reference absolute path */ if (p[0] == '/') { #ifdef LWS_OPENSSL_SUPPORT ssl = wsi->use_ssl; #endif ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS); port = wsi->c_port; path = p + 1; /* +1 as lws_client_reset expects leading / to be omitted */ } /* Absolute (Full) URI */ else if (strchr(p, ':')) { if (lws_parse_uri(p, &prot, &ads, &port, &path)) { cce = "HS: URI did not parse"; goto bail3; } if (!strcmp(prot, "wss") || !strcmp(prot, "https")) ssl = 1; } /* Relative reference relative path */ else { /* This doesn't try to calculate an absolute path, that will be left to the server */ #ifdef LWS_OPENSSL_SUPPORT ssl = wsi->use_ssl; #endif ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS); port = wsi->c_port; path = new_path + 1; /* +1 as lws_client_reset expects leading / to be omitted */ strncpy(new_path, lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI), sizeof(new_path)); new_path[sizeof(new_path) - 1] = '\0'; q = strrchr(new_path, '/'); if (q) { strncpy(q + 1, p, sizeof(new_path) - (q - new_path) - 1); new_path[sizeof(new_path) - 1] = '\0'; } else { path = p; } } #ifdef LWS_OPENSSL_SUPPORT if (wsi->use_ssl && !ssl) { cce = "HS: Redirect attempted SSL downgrade"; goto bail3; } #endif if (!lws_client_reset(&wsi, ssl, ads, port, path, ads)) { /* there are two ways to fail out with NULL return... * simple, early problem where the wsi is intact, or * we went through with the reconnect attempt and the * wsi is already closed. In the latter case, the wsi * has beet set to NULL additionally. */ lwsl_err("Redirect failed\n"); cce = "HS: Redirect failed"; if (wsi) goto bail3; return 1; } return 0; } if (!wsi->do_ws) { if (n != 200 && n != 201 && n != 304 && n != 401) { lwsl_notice("Connection failed with code %d\n", n); cce = "HS: Server unrecognized response code"; goto bail2; } #ifdef LWS_WITH_HTTP_PROXY wsi->perform_rewrite = 0; if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE)) { if (!strncmp(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE), "text/html", 9)) wsi->perform_rewrite = 1; } #endif /* allocate the per-connection user memory (if any) */ if (lws_ensure_user_space(wsi)) { lwsl_err("Problem allocating wsi user mem\n"); cce = "HS: OOM"; goto bail2; } /* he may choose to send us stuff in chunked transfer-coding */ wsi->chunked = 0; wsi->chunk_remaining = 0; /* ie, next thing is chunk size */ if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_TRANSFER_ENCODING)) { wsi->chunked = !strcmp(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_TRANSFER_ENCODING), "chunked"); /* first thing is hex, after payload there is crlf */ wsi->chunk_parser = ELCP_HEX; } if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_LENGTH)) { wsi->u.http.content_length = atoll(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_CONTENT_LENGTH)); lwsl_notice("%s: incoming content length %llu\n", __func__, (unsigned long long)wsi->u.http.content_length); wsi->u.http.content_remain = wsi->u.http.content_length; } else /* can't do 1.1 without a content length or chunked */ if (!wsi->chunked) wsi->u.http.connection_type = HTTP_CONNECTION_CLOSE; /* * we seem to be good to go, give client last chance to check * headers and OK it */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH, wsi->user_space, NULL, 0)) { cce = "HS: disallowed by client filter"; goto bail2; } /* clear his proxy connection timeout */ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0); wsi->rxflow_change_to = LWS_RXFLOW_ALLOW; /* call him back to inform him he is up */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP, wsi->user_space, NULL, 0)) { cce = "HS: disallowed at ESTABLISHED"; goto bail3; } /* free up his parsing allocations */ lws_header_table_detach(wsi, 0); lwsl_notice("%s: client connection up\n", __func__); return 0; } if (lws_hdr_total_length(wsi, WSI_TOKEN_ACCEPT) == 0) { lwsl_info("no ACCEPT\n"); cce = "HS: ACCEPT missing"; goto bail3; } if (p && strncmp(p, "101", 3)) { lwsl_warn( "lws_client_handshake: got bad HTTP response '%s'\n", p); cce = "HS: ws upgrade response not 101"; goto bail3; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_UPGRADE); if (!p) { lwsl_info("no UPGRADE\n"); cce = "HS: UPGRADE missing"; goto bail3; } strtolower(p); if (strcmp(p, "websocket")) { lwsl_warn( "lws_client_handshake: got bad Upgrade header '%s'\n", p); cce = "HS: Upgrade to something other than websocket"; goto bail3; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_CONNECTION); if (!p) { lwsl_info("no Connection hdr\n"); cce = "HS: CONNECTION missing"; goto bail3; } strtolower(p); if (strcmp(p, "upgrade")) { lwsl_warn("lws_client_int_s_hs: bad header %s\n", p); cce = "HS: UPGRADE malformed"; goto bail3; } pc = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS); if (!pc) { lwsl_parser("lws_client_int_s_hs: no protocol list\n"); } else lwsl_parser("lws_client_int_s_hs: protocol list '%s'\n", pc); /* * confirm the protocol the server wants to talk was in the list * of protocols we offered */ len = lws_hdr_total_length(wsi, WSI_TOKEN_PROTOCOL); if (!len) { lwsl_info("lws_client_int_s_hs: WSI_TOKEN_PROTOCOL is null\n"); /* * no protocol name to work from, * default to first protocol */ n = 0; wsi->protocol = &wsi->vhost->protocols[0]; goto check_extensions; } p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_PROTOCOL); len = strlen(p); while (pc && *pc && !okay) { if (!strncmp(pc, p, len) && (pc[len] == ',' || pc[len] == '\0')) { okay = 1; continue; } while (*pc && *pc++ != ',') ; while (*pc && *pc == ' ') pc++; } if (!okay) { lwsl_err("lws_client_int_s_hs: got bad protocol %s\n", p); cce = "HS: PROTOCOL malformed"; goto bail2; } /* * identify the selected protocol struct and set it */ n = 0; wsi->protocol = NULL; while (wsi->vhost->protocols[n].callback && !wsi->protocol) { if (strcmp(p, wsi->vhost->protocols[n].name) == 0) { wsi->protocol = &wsi->vhost->protocols[n]; break; } n++; } if (wsi->protocol == NULL) { lwsl_err("lws_client_int_s_hs: fail protocol %s\n", p); cce = "HS: Cannot match protocol"; goto bail2; } check_extensions: /* * stitch protocol choice into the vh protocol linked list * We always insert ourselves at the start of the list * * X <-> B * X <-> pAn <-> pB */ //lwsl_err("%s: pre insert vhost start wsi %p, that wsi prev == %p\n", // __func__, // wsi->vhost->same_vh_protocol_list[n], // wsi->same_vh_protocol_prev); wsi->same_vh_protocol_prev = /* guy who points to us */ &wsi->vhost->same_vh_protocol_list[n]; wsi->same_vh_protocol_next = /* old first guy is our next */ wsi->vhost->same_vh_protocol_list[n]; /* we become the new first guy */ wsi->vhost->same_vh_protocol_list[n] = wsi; if (wsi->same_vh_protocol_next) /* old first guy points back to us now */ wsi->same_vh_protocol_next->same_vh_protocol_prev = &wsi->same_vh_protocol_next; #ifndef LWS_NO_EXTENSIONS /* instantiate the accepted extensions */ if (!lws_hdr_total_length(wsi, WSI_TOKEN_EXTENSIONS)) { lwsl_ext("no client extensions allowed by server\n"); goto check_accept; } /* * break down the list of server accepted extensions * and go through matching them or identifying bogons */ if (lws_hdr_copy(wsi, sb, context->pt_serv_buf_size, WSI_TOKEN_EXTENSIONS) < 0) { lwsl_warn("ext list from server failed to copy\n"); cce = "HS: EXT: list too big"; goto bail2; } c = sb; n = 0; ignore = 0; a = NULL; while (more) { if (*c && (*c != ',' && *c != '\t')) { if (*c == ';') { ignore = 1; if (!a) a = c + 1; } if (ignore || *c == ' ') { c++; continue; } ext_name[n] = *c++; if (n < sizeof(ext_name) - 1) n++; continue; } ext_name[n] = '\0'; ignore = 0; if (!*c) more = 0; else { c++; if (!n) continue; } /* check we actually support it */ lwsl_notice("checking client ext %s\n", ext_name); n = 0; ext = wsi->vhost->extensions; while (ext && ext->callback) { if (strcmp(ext_name, ext->name)) { ext++; continue; } n = 1; lwsl_notice("instantiating client ext %s\n", ext_name); /* instantiate the extension on this conn */ wsi->active_extensions[wsi->count_act_ext] = ext; /* allow him to construct his ext instance */ if (ext->callback(lws_get_context(wsi), ext, wsi, LWS_EXT_CB_CLIENT_CONSTRUCT, (void *)&wsi->act_ext_user[wsi->count_act_ext], (void *)&opts, 0)) { lwsl_notice(" ext %s failed construction\n", ext_name); ext++; continue; } /* * allow the user code to override ext defaults if it * wants to */ ext_name[0] = '\0'; if (user_callback_handle_rxflow(wsi->protocol->callback, wsi, LWS_CALLBACK_WS_EXT_DEFAULTS, (char *)ext->name, ext_name, sizeof(ext_name))) { cce = "HS: EXT: failed setting defaults"; goto bail2; } if (ext_name[0] && lws_ext_parse_options(ext, wsi, wsi->act_ext_user[ wsi->count_act_ext], opts, ext_name, strlen(ext_name))) { lwsl_err("%s: unable to parse user defaults '%s'", __func__, ext_name); cce = "HS: EXT: failed parsing defaults"; goto bail2; } /* * give the extension the server options */ if (a && lws_ext_parse_options(ext, wsi, wsi->act_ext_user[wsi->count_act_ext], opts, a, c - a)) { lwsl_err("%s: unable to parse remote def '%s'", __func__, a); cce = "HS: EXT: failed parsing options"; goto bail2; } if (ext->callback(lws_get_context(wsi), ext, wsi, LWS_EXT_CB_OPTION_CONFIRM, wsi->act_ext_user[wsi->count_act_ext], NULL, 0)) { lwsl_err("%s: ext %s rejects server options %s", __func__, ext->name, a); cce = "HS: EXT: Rejects server options"; goto bail2; } wsi->count_act_ext++; ext++; } if (n == 0) { lwsl_warn("Unknown ext '%s'!\n", ext_name); cce = "HS: EXT: unknown ext"; goto bail2; } a = NULL; n = 0; } check_accept: #endif /* * Confirm his accept token is the one we precomputed */ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_ACCEPT); if (strcmp(p, wsi->u.hdr.ah->initial_handshake_hash_base64)) { lwsl_warn("lws_client_int_s_hs: accept '%s' wrong vs '%s'\n", p, wsi->u.hdr.ah->initial_handshake_hash_base64); cce = "HS: Accept hash wrong"; goto bail2; } /* allocate the per-connection user memory (if any) */ if (lws_ensure_user_space(wsi)) { lwsl_err("Problem allocating wsi user mem\n"); cce = "HS: OOM"; goto bail2; } /* * we seem to be good to go, give client last chance to check * headers and OK it */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH, wsi->user_space, NULL, 0)) { cce = "HS: Rejected by filter cb"; goto bail2; } /* clear his proxy connection timeout */ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0); /* free up his parsing allocations */ lws_header_table_detach(wsi, 0); lws_union_transition(wsi, LWSCM_WS_CLIENT); wsi->state = LWSS_ESTABLISHED; lws_restart_ws_ping_pong_timer(wsi); wsi->rxflow_change_to = LWS_RXFLOW_ALLOW; /* * create the frame buffer for this connection according to the * size mentioned in the protocol definition. If 0 there, then * use a big default for compatibility */ n = wsi->protocol->rx_buffer_size; if (!n) n = context->pt_serv_buf_size; n += LWS_PRE; wsi->u.ws.rx_ubuf = lws_malloc(n + 4 /* 0x0000ffff zlib */); if (!wsi->u.ws.rx_ubuf) { lwsl_err("Out of Mem allocating rx buffer %d\n", n); cce = "HS: OOM"; goto bail2; } wsi->u.ws.rx_ubuf_alloc = n; lwsl_info("Allocating client RX buffer %d\n", n); #if !defined(LWS_WITH_ESP32) if (setsockopt(wsi->desc.sockfd, SOL_SOCKET, SO_SNDBUF, (const char *)&n, sizeof n)) { lwsl_warn("Failed to set SNDBUF to %d", n); cce = "HS: SO_SNDBUF failed"; goto bail3; } #endif lwsl_debug("handshake OK for protocol %s\n", wsi->protocol->name); /* call him back to inform him he is up */ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_ESTABLISHED, wsi->user_space, NULL, 0)) { cce = "HS: Rejected at CLIENT_ESTABLISHED"; goto bail3; } #ifndef LWS_NO_EXTENSIONS /* * inform all extensions, not just active ones since they * already know */ ext = wsi->vhost->extensions; while (ext && ext->callback) { v = NULL; for (n = 0; n < wsi->count_act_ext; n++) if (wsi->active_extensions[n] == ext) v = wsi->act_ext_user[n]; ext->callback(context, ext, wsi, LWS_EXT_CB_ANY_WSI_ESTABLISHED, v, NULL, 0); ext++; } #endif return 0; bail3: close_reason = LWS_CLOSE_STATUS_NOSTATUS; bail2: if (wsi->protocol) wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_CONNECTION_ERROR, wsi->user_space, (void *)cce, (unsigned int)strlen(cce)); wsi->already_did_cce = 1; lwsl_info("closing connection due to bail2 connection error\n"); /* closing will free up his parsing allocations */ lws_close_free_wsi(wsi, close_reason); return 1; }
int main(int argc, char *argv[]) { //setup signal handler to detect if the mirror //wants to terminate this program. struct sigaction action; memset(&action, 0, sizeof(struct sigaction)); action.sa_handler = terminate; sigaction(SIGTERM, &action, NULL); //start of program here lws_set_log_level(0, NULL); char protoName[1024]; strcpy(protoName, argv[1]); struct lws_context *context = NULL; struct lws_context_creation_info info; struct lws *wsi = NULL; struct lws_protocols protocol; struct lws_client_connect_info i; memset(&info, 0, sizeof info); info.port = CONTEXT_PORT_NO_LISTEN; info.protocols = &protocol; info.max_http_header_pool = 128; info.gid = -1; info.uid = -1; protocol.name = protoName; protocol.callback = ws_service_callback; protocol.per_session_data_size = sizeof(struct session_data); protocol.rx_buffer_size = 125; printf("Creating context\n"); context = lws_create_context(&info); printf(KRED"[Main] context created.\n"RESET); if (context == NULL) { printf(KRED"[Main] context is NULL.\n"RESET); return -1; } printf("Connecting...\n"); const char *prot; if (lws_parse_uri(server, &prot, &i.address, &i.port, &i.path)) { printf("Client.c: Error parsing uri\n"); exit(1); } i.port = 5000; i.context = context; i.ssl_connection = 0; i.host = i.address; i.origin = i.address; i.ietf_version_or_minus_one = -1; i.protocol = protoName; //struct lws *wsi = NULL; const struct timespec sleepTime = { 0, NANOSECOND/FPS }; char command[256]; int left = 0, dir = 1; if (!connection_flag || !wsi) { wsi = lws_client_connect_via_info(&i); } while(!destroy_flag) { lws_service(context, 0); if (!connection_flag || !wsi) continue; left += (dir * SPEED); if (left > SCREEN_WIDTH) dir = -dir; else if (left < 0) dir = -dir; sprintf(command, "{\"command\":\"setcss\",\"data\":\"left=%dpx\"}", left); websocket_write_back(wsi, command, -1); nanosleep(&sleepTime, NULL); } lws_context_destroy(context); return 0; }
int main(int argc, char **argv) { int n = 0, ret = 0, port = 7681, use_ssl = 0, ietf_version = -1; unsigned int rl_dumb = 0, rl_mirror = 0, do_ws = 1; struct lws_context_creation_info info; struct lws_client_connect_info i; struct lws_context *context; const char *prot, *p; char path[300]; memset(&info, 0, sizeof info); lwsl_notice("libwebsockets test client - license LGPL2.1+SLE\n"); lwsl_notice("(C) Copyright 2010-2016 Andy Green <*****@*****.**>\n"); if (argc < 2) goto usage; while (n >= 0) { n = getopt_long(argc, argv, "nuv:hsp:d:l", options, NULL); if (n < 0) continue; switch (n) { case 'd': lws_set_log_level(atoi(optarg), NULL); break; case 's': use_ssl = 2; /* 2 = allow selfsigned */ break; case 'p': port = atoi(optarg); break; case 'l': longlived = 1; break; case 'v': ietf_version = atoi(optarg); break; case 'u': deny_deflate = 1; break; case 'n': deny_mux = 1; break; case 'h': goto usage; } } if (optind >= argc) goto usage; signal(SIGINT, sighandler); memset(&i, 0, sizeof(i)); i.port = port; if (lws_parse_uri(argv[optind], &prot, &i.address, &i.port, &p)) goto usage; /* add back the leading / on path */ path[0] = '/'; strncpy(path + 1, p, sizeof(path) - 2); path[sizeof(path) - 1] = '\0'; i.path = path; if (!strcmp(prot, "http") || !strcmp(prot, "ws")) use_ssl = 0; if (!strcmp(prot, "https") || !strcmp(prot, "wss")) use_ssl = 1; /* * create the websockets context. This tracks open connections and * knows how to route any traffic and which protocol version to use, * and if each connection is client or server side. * * For this client-only demo, we tell it to not listen on any port. */ info.port = CONTEXT_PORT_NO_LISTEN; info.protocols = protocols; info.gid = -1; info.uid = -1; if (use_ssl) info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT; context = lws_create_context(&info); if (context == NULL) { fprintf(stderr, "Creating libwebsocket context failed\n"); return 1; } i.context = context; i.ssl_connection = use_ssl; i.host = i.address; i.origin = i.address; i.ietf_version_or_minus_one = ietf_version; i.client_exts = exts; if (!strcmp(prot, "http") || !strcmp(prot, "https")) { lwsl_notice("using %s mode (non-ws)\n", prot); i.method = "GET"; do_ws = 0; } else lwsl_notice("using %s mode (ws)\n", prot); /* * sit there servicing the websocket context to handle incoming * packets, and drawing random circles on the mirror protocol websocket * * nothing happens until the client websocket connection is * asynchronously established... calling lws_client_connect() only * instantiates the connection logically, lws_service() progresses it * asynchronously. */ while (!force_exit) { if (do_ws) { if (!wsi_dumb && ratelimit_connects(&rl_dumb, 2u)) { lwsl_notice("dumb: connecting\n"); i.protocol = protocols[PROTOCOL_DUMB_INCREMENT].name; wsi_dumb = lws_client_connect_via_info(&i); } if (!wsi_mirror && ratelimit_connects(&rl_mirror, 2u)) { lwsl_notice("mirror: connecting\n"); i.protocol = protocols[PROTOCOL_LWS_MIRROR].name; wsi_mirror = lws_client_connect_via_info(&i); } } else if (!wsi_dumb && ratelimit_connects(&rl_dumb, 2u)) { lwsl_notice("http: connecting\n"); wsi_dumb = lws_client_connect_via_info(&i); } lws_service(context, 500); } lwsl_err("Exiting\n"); lws_context_destroy(context); return ret; usage: fprintf(stderr, "Usage: libwebsockets-test-client " "<server address> [--port=<p>] " "[--ssl] [-k] [-v <ver>] " "[-d <log bitfield>] [-l]\n"); return 1; }