Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 1 | #include "private-libwebsockets.h" |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2 | |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 3 | struct libwebsocket *__libwebsocket_client_connect_2( |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 4 | struct libwebsocket_context *context, |
| 5 | struct libwebsocket *wsi |
| 6 | ) { |
| 7 | struct pollfd pfd; |
| 8 | struct timeval tv; |
| 9 | struct hostent *server_hostent; |
| 10 | struct sockaddr_in server_addr; |
| 11 | int n; |
| 12 | int plen = 0; |
| 13 | char pkt[512]; |
| 14 | int opt = 1; |
M K | f243115 | 2011-09-25 10:34:35 +0100 | [diff] [blame] | 15 | #if defined(__APPLE__) |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 16 | struct protoent *tcp_proto; |
M K | f243115 | 2011-09-25 10:34:35 +0100 | [diff] [blame] | 17 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 18 | |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 19 | debug("__libwebsocket_client_connect_2\n"); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 20 | |
| 21 | wsi->candidate_children_list = NULL; |
| 22 | |
| 23 | /* |
| 24 | * proxy? |
| 25 | */ |
| 26 | |
| 27 | if (context->http_proxy_port) { |
| 28 | plen = sprintf(pkt, "CONNECT %s:%u HTTP/1.0\x0d\x0a" |
| 29 | "User-agent: libwebsockets\x0d\x0a" |
| 30 | /*Proxy-authorization: basic aGVsbG86d29ybGQ= */ |
| 31 | "\x0d\x0a", wsi->c_address, wsi->c_port); |
| 32 | |
| 33 | /* OK from now on we talk via the proxy */ |
| 34 | |
| 35 | free(wsi->c_address); |
| 36 | wsi->c_address = strdup(context->http_proxy_address); |
| 37 | wsi->c_port = context->http_proxy_port; |
| 38 | } |
| 39 | |
| 40 | /* |
| 41 | * prepare the actual connection (to the proxy, if any) |
| 42 | */ |
| 43 | |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 44 | debug("__libwebsocket_client_connect_2: address %s", wsi->c_address); |
Andy Green | 66a16f3 | 2011-05-24 22:07:45 +0100 | [diff] [blame] | 45 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 46 | server_hostent = gethostbyname(wsi->c_address); |
| 47 | if (server_hostent == NULL) { |
| 48 | fprintf(stderr, "Unable to get host name from %s\n", |
| 49 | wsi->c_address); |
| 50 | goto oom4; |
| 51 | } |
| 52 | |
| 53 | wsi->sock = socket(AF_INET, SOCK_STREAM, 0); |
| 54 | |
| 55 | if (wsi->sock < 0) { |
| 56 | fprintf(stderr, "Unable to open socket\n"); |
| 57 | goto oom4; |
| 58 | } |
| 59 | |
| 60 | server_addr.sin_family = AF_INET; |
| 61 | server_addr.sin_port = htons(wsi->c_port); |
| 62 | server_addr.sin_addr = *((struct in_addr *)server_hostent->h_addr); |
| 63 | bzero(&server_addr.sin_zero, 8); |
| 64 | |
| 65 | /* Disable Nagle */ |
M K | f243115 | 2011-09-25 10:34:35 +0100 | [diff] [blame] | 66 | #if !defined(__APPLE__) |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 67 | setsockopt(wsi->sock, SOL_TCP, TCP_NODELAY, |
| 68 | (const void *)&opt, sizeof(opt)); |
M K | f243115 | 2011-09-25 10:34:35 +0100 | [diff] [blame] | 69 | #else |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 70 | tcp_proto = getprotobyname("TCP"); |
| 71 | setsockopt(wsi->sock, tcp_proto->p_proto, TCP_NODELAY, |
| 72 | &opt, sizeof(opt)); |
M K | f243115 | 2011-09-25 10:34:35 +0100 | [diff] [blame] | 73 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 74 | |
| 75 | /* Set receiving timeout */ |
| 76 | tv.tv_sec = 0; |
| 77 | tv.tv_usec = 100 * 1000; |
| 78 | setsockopt(wsi->sock, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof tv); |
| 79 | |
| 80 | if (connect(wsi->sock, (struct sockaddr *)&server_addr, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 81 | sizeof(struct sockaddr)) == -1) { |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 82 | fprintf(stderr, "Connect failed\n"); |
| 83 | goto oom4; |
| 84 | } |
| 85 | |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 86 | debug("connected\n"); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 87 | |
| 88 | /* into fd -> wsi hashtable */ |
| 89 | |
| 90 | insert_wsi(context, wsi); |
| 91 | |
| 92 | /* into internal poll list */ |
| 93 | |
| 94 | context->fds[context->fds_count].fd = wsi->sock; |
| 95 | context->fds[context->fds_count].revents = 0; |
| 96 | context->fds[context->fds_count++].events = POLLIN; |
| 97 | |
| 98 | /* external POLL support via protocol 0 */ |
| 99 | context->protocols[0].callback(context, wsi, |
| 100 | LWS_CALLBACK_ADD_POLL_FD, |
| 101 | (void *)(long)wsi->sock, NULL, POLLIN); |
| 102 | |
| 103 | /* we are connected to server, or proxy */ |
| 104 | |
| 105 | if (context->http_proxy_port) { |
| 106 | |
| 107 | n = send(wsi->sock, pkt, plen, 0); |
| 108 | if (n < 0) { |
| 109 | #ifdef WIN32 |
| 110 | closesocket(wsi->sock); |
| 111 | #else |
| 112 | close(wsi->sock); |
| 113 | #endif |
| 114 | fprintf(stderr, "ERROR writing to proxy socket\n"); |
| 115 | goto bail1; |
| 116 | } |
| 117 | |
| 118 | libwebsocket_set_timeout(wsi, |
| 119 | PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE, 5); |
| 120 | |
| 121 | wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY; |
| 122 | |
| 123 | return wsi; |
| 124 | } |
| 125 | |
| 126 | /* |
| 127 | * provoke service to issue the handshake directly |
| 128 | * we need to do it this way because in the proxy case, this is the |
| 129 | * next state and executed only if and when we get a good proxy |
| 130 | * response inside the state machine |
| 131 | */ |
| 132 | |
| 133 | wsi->mode = LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE; |
| 134 | pfd.fd = wsi->sock; |
| 135 | pfd.revents = POLLIN; |
| 136 | libwebsocket_service_fd(context, &pfd); |
| 137 | |
| 138 | return wsi; |
| 139 | |
| 140 | oom4: |
| 141 | if (wsi->c_protocol) |
| 142 | free(wsi->c_protocol); |
| 143 | |
| 144 | if (wsi->c_origin) |
| 145 | free(wsi->c_origin); |
| 146 | |
| 147 | free(wsi->c_host); |
| 148 | free(wsi->c_path); |
| 149 | |
| 150 | bail1: |
| 151 | free(wsi); |
| 152 | |
| 153 | return NULL; |
| 154 | } |
| 155 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 156 | /** |
| 157 | * libwebsocket_client_connect() - Connect to another websocket server |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 158 | * @context: Websocket context |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 159 | * @address: Remote server address, eg, "myserver.com" |
| 160 | * @port: Port to connect to on the remote server, eg, 80 |
| 161 | * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self |
| 162 | * signed certs |
| 163 | * @path: Websocket path on server |
| 164 | * @host: Hostname on server |
| 165 | * @origin: Socket origin name |
| 166 | * @protocol: Comma-separated list of protocols being asked for from |
| 167 | * the server, or just one. The server will pick the one it |
| 168 | * likes best. |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 169 | * @ietf_version_or_minus_one: -1 to ask to connect using the default, latest |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 170 | * protocol supported, or the specific protocol ordinal |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 171 | * |
| 172 | * This function creates a connection to a remote server |
| 173 | */ |
| 174 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 175 | struct libwebsocket * |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 176 | libwebsocket_client_connect(struct libwebsocket_context *context, |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 177 | const char *address, |
| 178 | int port, |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 179 | int ssl_connection, |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 180 | const char *path, |
| 181 | const char *host, |
| 182 | const char *origin, |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 183 | const char *protocol, |
| 184 | int ietf_version_or_minus_one) |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 185 | { |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 186 | struct libwebsocket *wsi; |
| 187 | int n; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 188 | int m; |
| 189 | struct libwebsocket_extension *ext; |
| 190 | int handled; |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 191 | #ifndef LWS_OPENSSL_SUPPORT |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 192 | if (ssl_connection) { |
| 193 | fprintf(stderr, "libwebsockets not configured for ssl\n"); |
| 194 | return NULL; |
| 195 | } |
| 196 | #endif |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 197 | |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 198 | wsi = malloc(sizeof(struct libwebsocket)); |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 199 | if (wsi == NULL) |
| 200 | goto bail1; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 201 | |
Darin Willits | c19456f | 2011-02-14 17:52:39 +0000 | [diff] [blame] | 202 | memset(wsi, 0, sizeof *wsi); |
| 203 | |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 204 | /* -1 means just use latest supported */ |
| 205 | |
| 206 | if (ietf_version_or_minus_one == -1) |
Andy Green | 193306c | 2011-02-26 11:08:46 +0000 | [diff] [blame] | 207 | ietf_version_or_minus_one = SPEC_LATEST_SUPPORTED; |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 208 | |
| 209 | wsi->ietf_spec_revision = ietf_version_or_minus_one; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 210 | wsi->name_buffer_pos = 0; |
| 211 | wsi->user_space = NULL; |
| 212 | wsi->state = WSI_STATE_CLIENT_UNCONNECTED; |
| 213 | wsi->pings_vs_pongs = 0; |
Andy Green | 927eb7b | 2011-02-01 08:52:55 +0000 | [diff] [blame] | 214 | wsi->protocol = NULL; |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 215 | wsi->pending_timeout = NO_PENDING_TIMEOUT; |
Andy Green | d6e0911 | 2011-03-05 16:12:15 +0000 | [diff] [blame] | 216 | wsi->count_active_extensions = 0; |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 217 | #ifdef LWS_OPENSSL_SUPPORT |
| 218 | wsi->use_ssl = ssl_connection; |
| 219 | #endif |
| 220 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 221 | wsi->c_port = port; |
| 222 | wsi->c_address = strdup(address); |
| 223 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 224 | /* copy parameters over so state machine has access */ |
| 225 | |
| 226 | wsi->c_path = malloc(strlen(path) + 1); |
| 227 | if (wsi->c_path == NULL) |
| 228 | goto bail1; |
| 229 | strcpy(wsi->c_path, path); |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 230 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 231 | wsi->c_host = malloc(strlen(host) + 1); |
| 232 | if (wsi->c_host == NULL) |
| 233 | goto oom1; |
| 234 | strcpy(wsi->c_host, host); |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 235 | |
Andy Green | 08d3392 | 2011-02-26 10:22:49 +0000 | [diff] [blame] | 236 | if (origin) { |
| 237 | wsi->c_origin = malloc(strlen(origin) + 1); |
| 238 | strcpy(wsi->c_origin, origin); |
| 239 | if (wsi->c_origin == NULL) |
| 240 | goto oom2; |
| 241 | } else |
| 242 | wsi->c_origin = NULL; |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 243 | |
David Brooks | 993343b | 2012-04-20 12:16:52 +0800 | [diff] [blame] | 244 | wsi->c_callback = NULL; |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 245 | if (protocol) { |
David Brooks | 993343b | 2012-04-20 12:16:52 +0800 | [diff] [blame] | 246 | const char *pc; |
| 247 | struct libwebsocket_protocols *pp; |
| 248 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 249 | wsi->c_protocol = malloc(strlen(protocol) + 1); |
| 250 | if (wsi->c_protocol == NULL) |
| 251 | goto oom3; |
David Brooks | 993343b | 2012-04-20 12:16:52 +0800 | [diff] [blame] | 252 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 253 | strcpy(wsi->c_protocol, protocol); |
David Brooks | 993343b | 2012-04-20 12:16:52 +0800 | [diff] [blame] | 254 | |
| 255 | pc = protocol; |
| 256 | while (*pc && *pc != ',') |
| 257 | pc++; |
| 258 | n = pc - protocol; |
| 259 | pp = context->protocols; |
| 260 | while (pp->name && !wsi->c_callback) { |
| 261 | if (!strncmp(protocol, pp->name, n)) |
| 262 | wsi->c_callback = pp->callback; |
| 263 | pp++; |
| 264 | } |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 265 | } else |
| 266 | wsi->c_protocol = NULL; |
| 267 | |
David Brooks | 993343b | 2012-04-20 12:16:52 +0800 | [diff] [blame] | 268 | if (!wsi->c_callback) |
| 269 | wsi->c_callback = context->protocols[0].callback; |
| 270 | |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 271 | /* set up appropriate masking */ |
| 272 | |
| 273 | wsi->xor_mask = xor_no_mask; |
| 274 | |
| 275 | switch (wsi->ietf_spec_revision) { |
Andy Green | eeaacb3 | 2011-03-01 20:44:24 +0000 | [diff] [blame] | 276 | case 0: |
| 277 | break; |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 278 | case 4: |
| 279 | wsi->xor_mask = xor_mask_04; |
| 280 | break; |
| 281 | case 5: |
Andy Green | 9514bf8 | 2011-02-26 11:13:56 +0000 | [diff] [blame] | 282 | case 6: |
Andy Green | 33872cd | 2011-04-24 05:49:44 +0100 | [diff] [blame] | 283 | case 7: |
Andy Green | d85cb20 | 2011-09-25 09:32:54 +0100 | [diff] [blame] | 284 | case 8: |
| 285 | case 13: |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 286 | wsi->xor_mask = xor_mask_05; |
| 287 | break; |
| 288 | default: |
| 289 | fprintf(stderr, |
| 290 | "Client ietf version %d not supported\n", |
| 291 | wsi->ietf_spec_revision); |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 292 | goto oom4; |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | /* force no mask if he asks for that though */ |
| 296 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 297 | if (context->options & LWS_SERVER_OPTION_DEFEAT_CLIENT_MASK) |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 298 | wsi->xor_mask = xor_no_mask; |
| 299 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 300 | for (n = 0; n < WSI_TOKEN_COUNT; n++) { |
| 301 | wsi->utf8_token[n].token = NULL; |
| 302 | wsi->utf8_token[n].token_len = 0; |
| 303 | } |
| 304 | |
| 305 | /* |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 306 | * Check with each extension if it is able to route and proxy this |
| 307 | * connection for us. For example, an extension like x-google-mux |
| 308 | * can handle this and then we don't need an actual socket for this |
| 309 | * connection. |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 310 | */ |
| 311 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 312 | handled = 0; |
| 313 | ext = context->extensions; |
| 314 | n = 0; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 315 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 316 | while (ext && ext->callback && !handled) { |
| 317 | m = ext->callback(context, ext, wsi, |
| 318 | LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION, |
| 319 | (void *)(long)n, (void *)address, port); |
| 320 | if (m) |
| 321 | handled = 1; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 322 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 323 | ext++; |
| 324 | n++; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 325 | } |
| 326 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 327 | if (handled) { |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 328 | debug("libwebsocket_client_connect: ext handling conn\n"); |
Andy Green | 5b9a4c0 | 2011-01-28 09:39:29 +0000 | [diff] [blame] | 329 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 330 | libwebsocket_set_timeout(wsi, |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 331 | PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE, 5); |
Andy Green | 5b9a4c0 | 2011-01-28 09:39:29 +0000 | [diff] [blame] | 332 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 333 | wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT; |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 334 | return wsi; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 335 | } |
| 336 | |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 337 | debug("libwebsocket_client_connect: direct conn\n"); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 338 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 339 | return __libwebsocket_client_connect_2(context, wsi); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 340 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 341 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 342 | oom4: |
| 343 | if (wsi->c_protocol) |
| 344 | free(wsi->c_protocol); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 345 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 346 | oom3: |
Andy Green | 08d3392 | 2011-02-26 10:22:49 +0000 | [diff] [blame] | 347 | if (wsi->c_origin) |
| 348 | free(wsi->c_origin); |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 349 | |
| 350 | oom2: |
| 351 | free(wsi->c_host); |
| 352 | |
| 353 | oom1: |
| 354 | free(wsi->c_path); |
| 355 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 356 | bail1: |
| 357 | free(wsi); |
| 358 | |
| 359 | return NULL; |
| 360 | } |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame^] | 361 | |
| 362 | |
| 363 | /** |
| 364 | * libwebsocket_client_connect_extended() - Connect to another websocket server |
| 365 | * @context: Websocket context |
| 366 | * @address: Remote server address, eg, "myserver.com" |
| 367 | * @port: Port to connect to on the remote server, eg, 80 |
| 368 | * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self |
| 369 | * signed certs |
| 370 | * @path: Websocket path on server |
| 371 | * @host: Hostname on server |
| 372 | * @origin: Socket origin name |
| 373 | * @protocol: Comma-separated list of protocols being asked for from |
| 374 | * the server, or just one. The server will pick the one it |
| 375 | * likes best. |
| 376 | * @ietf_version_or_minus_one: -1 to ask to connect using the default, latest |
| 377 | * protocol supported, or the specific protocol ordinal |
| 378 | * @userdata: Pre-allocated user data |
| 379 | * |
| 380 | * This function creates a connection to a remote server |
| 381 | */ |
| 382 | |
| 383 | struct libwebsocket * |
| 384 | libwebsocket_client_connect_extended(struct libwebsocket_context *context, |
| 385 | const char *address, |
| 386 | int port, |
| 387 | int ssl_connection, |
| 388 | const char *path, |
| 389 | const char *host, |
| 390 | const char *origin, |
| 391 | const char *protocol, |
| 392 | int ietf_version_or_minus_one, |
| 393 | void *userdata) |
| 394 | { |
| 395 | struct libwebsocket *ws = |
| 396 | libwebsocket_client_connect(context, address, port, ssl_connection, path, host, origin, protocol, ietf_version_or_minus_one) ; |
| 397 | |
| 398 | if (ws && !ws->user_space && userdata) |
| 399 | ws->user_space = userdata ; |
| 400 | |
| 401 | return ws ; |
| 402 | } |