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 | |
Markus Elfring | 7521233 | 2013-10-26 20:23:00 +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; |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 8 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 9 | struct sockaddr_in6 server_addr6; |
| 10 | struct sockaddr_in6 client_addr6; |
| 11 | struct addrinfo hints, *result; |
| 12 | #endif |
| 13 | struct sockaddr_in server_addr4; |
| 14 | struct sockaddr_in client_addr4; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 15 | struct hostent *server_hostent; |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 16 | |
| 17 | struct sockaddr *v; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 18 | int n; |
| 19 | int plen = 0; |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 20 | const char *ads; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 21 | |
Markus Elfring | 7521233 | 2013-10-26 20:23:00 +0800 | [diff] [blame] | 22 | lwsl_client("libwebsocket_client_connect_2\n"); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 23 | |
| 24 | /* |
| 25 | * proxy? |
| 26 | */ |
| 27 | |
| 28 | if (context->http_proxy_port) { |
Andy Green | e48ba31 | 2013-02-10 15:34:59 +0800 | [diff] [blame] | 29 | plen = sprintf((char *)context->service_buffer, |
Andy Green | f54a94b | 2013-02-10 15:19:39 +0800 | [diff] [blame] | 30 | "CONNECT %s:%u HTTP/1.0\x0d\x0a" |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 31 | "User-agent: libwebsockets\x0d\x0a" |
| 32 | /*Proxy-authorization: basic aGVsbG86d29ybGQ= */ |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 33 | "\x0d\x0a", |
| 34 | lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS), |
Andy Green | a7521de | 2013-02-18 10:38:45 +0800 | [diff] [blame] | 35 | wsi->u.hdr.ah->c_port); |
Andy Green | 36efd82 | 2013-10-25 22:07:57 +0800 | [diff] [blame] | 36 | ads = context->http_proxy_address; |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 37 | |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 38 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 39 | if (LWS_IPV6_ENABLED(context)) |
| 40 | server_addr6.sin6_port = htons(context->http_proxy_port); |
| 41 | else |
| 42 | #endif |
| 43 | server_addr4.sin_port = htons(context->http_proxy_port); |
| 44 | |
Andy Green | 36efd82 | 2013-10-25 22:07:57 +0800 | [diff] [blame] | 45 | } else { |
| 46 | ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS); |
Andy Green | 7844d04 | 2014-03-25 14:08:21 +0800 | [diff] [blame] | 47 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 48 | if (LWS_IPV6_ENABLED(context)) |
| 49 | server_addr6.sin6_port = htons(wsi->u.hdr.ah->c_port); |
| 50 | else |
| 51 | #endif |
| 52 | server_addr4.sin_port = htons(wsi->u.hdr.ah->c_port); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 53 | } |
| 54 | |
| 55 | /* |
| 56 | * prepare the actual connection (to the proxy, if any) |
| 57 | */ |
Markus Elfring | 7521233 | 2013-10-26 20:23:00 +0800 | [diff] [blame] | 58 | lwsl_client("libwebsocket_client_connect_2: address %s\n", ads); |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 59 | |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 60 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 61 | if (LWS_IPV6_ENABLED(context)) { |
| 62 | memset(&hints, 0, sizeof(struct addrinfo)); |
| 63 | n = getaddrinfo(ads, NULL, &hints, &result); |
| 64 | if (n) { |
| 65 | lwsl_err("getaddrinfo: %s\n", gai_strerror(n)); |
| 66 | goto oom4; |
| 67 | } |
| 68 | |
| 69 | server_addr6.sin6_family = AF_INET6; |
| 70 | switch (result->ai_family) { |
| 71 | case AF_INET: |
| 72 | /* map IPv4 to IPv6 */ |
| 73 | bzero((char *)&server_addr6.sin6_addr, |
| 74 | sizeof(struct in6_addr)); |
| 75 | server_addr6.sin6_addr.s6_addr16[5] = 0xffff; |
| 76 | bcopy(&((struct sockaddr_in *)result->ai_addr)->sin_addr, |
| 77 | &server_addr6.sin6_addr.s6_addr16[6], |
| 78 | sizeof(struct in_addr)); |
| 79 | break; |
| 80 | case AF_INET6: |
| 81 | memcpy(&server_addr6.sin6_addr, |
| 82 | &((struct sockaddr_in6 *)result->ai_addr)->sin6_addr, |
| 83 | sizeof(struct in6_addr)); |
| 84 | break; |
| 85 | default: |
| 86 | lwsl_err("Unknown address family\n"); |
| 87 | freeaddrinfo(result); |
| 88 | goto oom4; |
| 89 | } |
| 90 | |
| 91 | freeaddrinfo(result); |
| 92 | } else |
| 93 | #endif |
| 94 | { |
| 95 | server_hostent = gethostbyname(ads); |
| 96 | if (!server_hostent) { |
| 97 | lwsl_err("Unable to get host name from %s\n", ads); |
| 98 | goto oom4; |
| 99 | } |
| 100 | |
| 101 | server_addr4.sin_family = AF_INET; |
| 102 | server_addr4.sin_addr = |
| 103 | *((struct in_addr *)server_hostent->h_addr); |
| 104 | bzero(&server_addr4.sin_zero, 8); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 105 | } |
| 106 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 107 | if (wsi->sock < 0) { |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 108 | |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 109 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 110 | if (LWS_IPV6_ENABLED(context)) |
| 111 | wsi->sock = socket(AF_INET6, SOCK_STREAM, 0); |
| 112 | else |
| 113 | #endif |
| 114 | wsi->sock = socket(AF_INET, SOCK_STREAM, 0); |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 115 | |
| 116 | if (wsi->sock < 0) { |
| 117 | lwsl_warn("Unable to open socket\n"); |
| 118 | goto oom4; |
| 119 | } |
| 120 | |
| 121 | if (lws_set_socket_options(context, wsi->sock)) { |
| 122 | lwsl_err("Failed to set wsi socket options\n"); |
| 123 | compatible_close(wsi->sock); |
| 124 | goto oom4; |
| 125 | } |
| 126 | |
| 127 | wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_CONNECT; |
| 128 | |
| 129 | insert_wsi_socket_into_fds(context, wsi); |
| 130 | |
| 131 | libwebsocket_set_timeout(wsi, |
| 132 | PENDING_TIMEOUT_AWAITING_CONNECT_RESPONSE, |
| 133 | AWAITING_TIMEOUT); |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 134 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 135 | if (LWS_IPV6_ENABLED(context)) { |
| 136 | v = (struct sockaddr *)&client_addr6; |
| 137 | n = sizeof(client_addr6); |
| 138 | bzero((char *)v, n); |
| 139 | client_addr6.sin6_family = AF_INET6; |
| 140 | } else |
| 141 | #endif |
| 142 | { |
| 143 | v = (struct sockaddr *)&client_addr4; |
| 144 | n = sizeof(client_addr4); |
| 145 | bzero((char *)v, n); |
| 146 | client_addr4.sin_family = AF_INET; |
| 147 | } |
Mattias Lundberg | 03bb8f9 | 2014-02-18 10:06:57 +0100 | [diff] [blame] | 148 | |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 149 | if (context->iface) { |
| 150 | if (interface_to_sa(context, context->iface, |
| 151 | (struct sockaddr_in *)v, n) < 0) { |
| 152 | lwsl_err("Unable to find interface %s\n", |
| 153 | context->iface); |
Mattias Lundberg | 03bb8f9 | 2014-02-18 10:06:57 +0100 | [diff] [blame] | 154 | compatible_close(wsi->sock); |
| 155 | goto failed; |
| 156 | } |
| 157 | |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 158 | if (bind(wsi->sock, v, n) < 0) { |
| 159 | lwsl_err("Error binding to interface %s", |
| 160 | context->iface); |
Mattias Lundberg | 03bb8f9 | 2014-02-18 10:06:57 +0100 | [diff] [blame] | 161 | compatible_close(wsi->sock); |
| 162 | goto failed; |
| 163 | } |
| 164 | } |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 165 | } |
| 166 | |
Andy Green | 055f297 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 167 | #ifdef LWS_USE_IPV6 |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 168 | if (LWS_IPV6_ENABLED(context)) { |
| 169 | v = (struct sockaddr *)&server_addr6; |
| 170 | n = sizeof(struct sockaddr_in6); |
| 171 | } else |
| 172 | #endif |
| 173 | { |
| 174 | v = (struct sockaddr *)&server_addr4; |
| 175 | n = sizeof(struct sockaddr); |
| 176 | } |
Andy Green | 36efd82 | 2013-10-25 22:07:57 +0800 | [diff] [blame] | 177 | |
James Devine | 3f13ea2 | 2014-03-24 16:09:25 +0800 | [diff] [blame] | 178 | if (connect(wsi->sock, v, n) == -1 || LWS_ERRNO == LWS_EISCONN) { |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 179 | |
Patrick Gansterer | a616300 | 2014-03-27 11:21:41 +0100 | [diff] [blame^] | 180 | if (LWS_ERRNO == LWS_EALREADY || LWS_ERRNO == LWS_EINPROGRESS |
| 181 | || LWS_ERRNO == LWS_EWOULDBLOCK) { |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 182 | lwsl_client("nonblocking connect retry\n"); |
| 183 | |
| 184 | /* |
| 185 | * must do specifically a POLLOUT poll to hear |
| 186 | * about the connect completion |
| 187 | */ |
Andy Green | 91f19d8 | 2013-12-21 11:18:34 +0800 | [diff] [blame] | 188 | lws_change_pollfd(wsi, 0, POLLOUT); |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 189 | |
| 190 | return wsi; |
| 191 | } |
| 192 | |
Patrick Gansterer | 2dbd837 | 2014-02-28 12:37:52 +0100 | [diff] [blame] | 193 | if (LWS_ERRNO != LWS_EISCONN) { |
Patrick Gansterer | 2dbd837 | 2014-02-28 12:37:52 +0100 | [diff] [blame] | 194 | lwsl_debug("Connect failed errno=%d\n", LWS_ERRNO); |
shys | 5efcb3f | 2013-10-25 15:49:11 +0200 | [diff] [blame] | 195 | goto failed; |
| 196 | } |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 197 | } |
| 198 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 199 | lwsl_client("connected\n"); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 200 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 201 | /* we are connected to server, or proxy */ |
| 202 | |
| 203 | if (context->http_proxy_port) { |
| 204 | |
Andy Green | 36efd82 | 2013-10-25 22:07:57 +0800 | [diff] [blame] | 205 | /* OK from now on we talk via the proxy, so connect to that */ |
| 206 | |
| 207 | /* |
| 208 | * (will overwrite existing pointer, |
| 209 | * leaving old string/frag there but unreferenced) |
| 210 | */ |
| 211 | if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS, |
| 212 | context->http_proxy_address)) |
| 213 | goto failed; |
| 214 | wsi->u.hdr.ah->c_port = context->http_proxy_port; |
| 215 | |
Joachim Bauch | 8294c1f | 2013-06-29 10:22:09 +0800 | [diff] [blame] | 216 | n = send(wsi->sock, context->service_buffer, plen, MSG_NOSIGNAL); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 217 | if (n < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 218 | lwsl_debug("ERROR writing to proxy socket\n"); |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 219 | goto failed; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | libwebsocket_set_timeout(wsi, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 223 | PENDING_TIMEOUT_AWAITING_PROXY_RESPONSE, |
| 224 | AWAITING_TIMEOUT); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 225 | |
| 226 | wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_PROXY_REPLY; |
| 227 | |
| 228 | return wsi; |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | * provoke service to issue the handshake directly |
| 233 | * we need to do it this way because in the proxy case, this is the |
| 234 | * next state and executed only if and when we get a good proxy |
Andy Green | 73abc25 | 2013-01-13 11:05:30 +0800 | [diff] [blame] | 235 | * response inside the state machine... but notice in SSL case this |
| 236 | * may not have sent anything yet with 0 return, and won't until some |
| 237 | * many retries from main loop. To stop that becoming endless, |
| 238 | * cover with a timeout. |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 239 | */ |
| 240 | |
Andy Green | 73abc25 | 2013-01-13 11:05:30 +0800 | [diff] [blame] | 241 | libwebsocket_set_timeout(wsi, |
| 242 | PENDING_TIMEOUT_SENT_CLIENT_HANDSHAKE, AWAITING_TIMEOUT); |
| 243 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 244 | wsi->mode = LWS_CONNMODE_WS_CLIENT_ISSUE_HANDSHAKE; |
| 245 | pfd.fd = wsi->sock; |
| 246 | pfd.revents = POLLIN; |
David Galeano | 36750b8 | 2013-01-09 16:17:04 +0800 | [diff] [blame] | 247 | |
| 248 | n = libwebsocket_service_fd(context, &pfd); |
| 249 | |
| 250 | if (n < 0) |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 251 | goto failed; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 252 | |
David Galeano | 36750b8 | 2013-01-09 16:17:04 +0800 | [diff] [blame] | 253 | if (n) /* returns 1 on failure after closing wsi */ |
| 254 | return NULL; |
| 255 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 256 | return wsi; |
| 257 | |
| 258 | oom4: |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 259 | free(wsi->u.hdr.ah); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 260 | free(wsi); |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 261 | return NULL; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 262 | |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 263 | failed: |
| 264 | libwebsocket_close_and_free_session(context, wsi, |
| 265 | LWS_CLOSE_STATUS_NOSTATUS); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 266 | return NULL; |
| 267 | } |
| 268 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 269 | /** |
| 270 | * libwebsocket_client_connect() - Connect to another websocket server |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 271 | * @context: Websocket context |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 272 | * @address: Remote server address, eg, "myserver.com" |
| 273 | * @port: Port to connect to on the remote server, eg, 80 |
| 274 | * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self |
| 275 | * signed certs |
| 276 | * @path: Websocket path on server |
| 277 | * @host: Hostname on server |
| 278 | * @origin: Socket origin name |
| 279 | * @protocol: Comma-separated list of protocols being asked for from |
| 280 | * the server, or just one. The server will pick the one it |
| 281 | * likes best. |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 282 | * @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] | 283 | * protocol supported, or the specific protocol ordinal |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 284 | * |
| 285 | * This function creates a connection to a remote server |
| 286 | */ |
| 287 | |
Peter Pentchev | 9a4fef7 | 2013-03-30 09:52:21 +0800 | [diff] [blame] | 288 | LWS_VISIBLE struct libwebsocket * |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 289 | libwebsocket_client_connect(struct libwebsocket_context *context, |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 290 | const char *address, |
| 291 | int port, |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 292 | int ssl_connection, |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 293 | const char *path, |
| 294 | const char *host, |
| 295 | const char *origin, |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 296 | const char *protocol, |
| 297 | int ietf_version_or_minus_one) |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 298 | { |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 299 | struct libwebsocket *wsi; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 300 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 760c3d4 | 2013-02-18 10:43:18 +0800 | [diff] [blame] | 301 | int n; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 302 | int m; |
| 303 | struct libwebsocket_extension *ext; |
| 304 | int handled; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 305 | #endif |
| 306 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 307 | #ifndef LWS_OPENSSL_SUPPORT |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 308 | if (ssl_connection) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 309 | lwsl_err("libwebsockets not configured for ssl\n"); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 310 | return NULL; |
| 311 | } |
| 312 | #endif |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 313 | |
Aaron Zinman | 4550f1d | 2013-01-10 12:35:18 +0800 | [diff] [blame] | 314 | wsi = (struct libwebsocket *) malloc(sizeof(struct libwebsocket)); |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 315 | if (wsi == NULL) |
Andy Green | 224149a | 2013-02-11 21:43:41 +0800 | [diff] [blame] | 316 | goto bail; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 317 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 318 | memset(wsi, 0, sizeof(*wsi)); |
Andy Green | 5dc62ea | 2013-09-20 20:26:12 +0800 | [diff] [blame] | 319 | wsi->sock = -1; |
Darin Willits | c19456f | 2011-02-14 17:52:39 +0000 | [diff] [blame] | 320 | |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 321 | /* -1 means just use latest supported */ |
| 322 | |
| 323 | if (ietf_version_or_minus_one == -1) |
Andy Green | 193306c | 2011-02-26 11:08:46 +0000 | [diff] [blame] | 324 | ietf_version_or_minus_one = SPEC_LATEST_SUPPORTED; |
Andy Green | bfb051f | 2011-02-09 08:49:14 +0000 | [diff] [blame] | 325 | |
| 326 | wsi->ietf_spec_revision = ietf_version_or_minus_one; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 327 | wsi->user_space = NULL; |
| 328 | wsi->state = WSI_STATE_CLIENT_UNCONNECTED; |
Andy Green | 927eb7b | 2011-02-01 08:52:55 +0000 | [diff] [blame] | 329 | wsi->protocol = NULL; |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 330 | wsi->pending_timeout = NO_PENDING_TIMEOUT; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 331 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | d6e0911 | 2011-03-05 16:12:15 +0000 | [diff] [blame] | 332 | wsi->count_active_extensions = 0; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 333 | #endif |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 334 | #ifdef LWS_OPENSSL_SUPPORT |
| 335 | wsi->use_ssl = ssl_connection; |
| 336 | #endif |
| 337 | |
Andy Green | 16ab318 | 2013-02-10 18:02:31 +0800 | [diff] [blame] | 338 | if (lws_allocate_header_table(wsi)) |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 339 | goto bail; |
| 340 | |
| 341 | /* |
| 342 | * we're not necessarily in a position to action these right away, |
| 343 | * stash them... we only need during connect phase so u.hdr is fine |
| 344 | */ |
Andy Green | a7521de | 2013-02-18 10:38:45 +0800 | [diff] [blame] | 345 | wsi->u.hdr.ah->c_port = port; |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 346 | if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS, address)) |
| 347 | goto bail1; |
| 348 | |
| 349 | /* these only need u.hdr lifetime as well */ |
| 350 | |
| 351 | if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_URI, path)) |
| 352 | goto bail1; |
| 353 | |
| 354 | if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_HOST, host)) |
| 355 | goto bail1; |
| 356 | |
| 357 | if (origin) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 358 | if (lws_hdr_simple_create(wsi, |
| 359 | _WSI_TOKEN_CLIENT_ORIGIN, origin)) |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 360 | goto bail1; |
| 361 | /* |
| 362 | * this is a list of protocols we tell the server we're okay with |
| 363 | * stash it for later when we compare server response with it |
| 364 | */ |
| 365 | if (protocol) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 366 | if (lws_hdr_simple_create(wsi, |
| 367 | _WSI_TOKEN_CLIENT_SENT_PROTOCOLS, protocol)) |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 368 | goto bail1; |
| 369 | |
| 370 | wsi->protocol = &context->protocols[0]; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 371 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 372 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 373 | /* |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 374 | * Check with each extension if it is able to route and proxy this |
| 375 | * connection for us. For example, an extension like x-google-mux |
| 376 | * can handle this and then we don't need an actual socket for this |
| 377 | * connection. |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 378 | */ |
| 379 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 380 | handled = 0; |
| 381 | ext = context->extensions; |
| 382 | n = 0; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 383 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 384 | while (ext && ext->callback && !handled) { |
| 385 | m = ext->callback(context, ext, wsi, |
| 386 | LWS_EXT_CALLBACK_CAN_PROXY_CLIENT_CONNECTION, |
| 387 | (void *)(long)n, (void *)address, port); |
| 388 | if (m) |
| 389 | handled = 1; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 390 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 391 | ext++; |
| 392 | n++; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 395 | if (handled) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 396 | lwsl_client("libwebsocket_client_connect: ext handling conn\n"); |
Andy Green | 5b9a4c0 | 2011-01-28 09:39:29 +0000 | [diff] [blame] | 397 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 398 | libwebsocket_set_timeout(wsi, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 399 | PENDING_TIMEOUT_AWAITING_EXTENSION_CONNECT_RESPONSE, |
| 400 | AWAITING_TIMEOUT); |
Andy Green | 5b9a4c0 | 2011-01-28 09:39:29 +0000 | [diff] [blame] | 401 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 402 | wsi->mode = LWS_CONNMODE_WS_CLIENT_WAITING_EXTENSION_CONNECT; |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 403 | return wsi; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 404 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 405 | #endif |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 406 | lwsl_client("libwebsocket_client_connect: direct conn\n"); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 407 | |
Markus Elfring | 7521233 | 2013-10-26 20:23:00 +0800 | [diff] [blame] | 408 | return libwebsocket_client_connect_2(context, wsi); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 409 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 410 | bail1: |
Andy Green | e77fb80 | 2013-02-11 13:04:45 +0800 | [diff] [blame] | 411 | free(wsi->u.hdr.ah); |
| 412 | bail: |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 413 | free(wsi); |
| 414 | |
| 415 | return NULL; |
| 416 | } |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame] | 417 | |
| 418 | |
| 419 | /** |
| 420 | * libwebsocket_client_connect_extended() - Connect to another websocket server |
| 421 | * @context: Websocket context |
| 422 | * @address: Remote server address, eg, "myserver.com" |
| 423 | * @port: Port to connect to on the remote server, eg, 80 |
| 424 | * @ssl_connection: 0 = ws://, 1 = wss:// encrypted, 2 = wss:// allow self |
| 425 | * signed certs |
| 426 | * @path: Websocket path on server |
| 427 | * @host: Hostname on server |
| 428 | * @origin: Socket origin name |
| 429 | * @protocol: Comma-separated list of protocols being asked for from |
| 430 | * the server, or just one. The server will pick the one it |
| 431 | * likes best. |
| 432 | * @ietf_version_or_minus_one: -1 to ask to connect using the default, latest |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 433 | * protocol supported, or the specific protocol ordinal |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame] | 434 | * @userdata: Pre-allocated user data |
| 435 | * |
| 436 | * This function creates a connection to a remote server |
| 437 | */ |
| 438 | |
Peter Pentchev | 9a4fef7 | 2013-03-30 09:52:21 +0800 | [diff] [blame] | 439 | LWS_VISIBLE struct libwebsocket * |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame] | 440 | libwebsocket_client_connect_extended(struct libwebsocket_context *context, |
| 441 | const char *address, |
| 442 | int port, |
| 443 | int ssl_connection, |
| 444 | const char *path, |
| 445 | const char *host, |
| 446 | const char *origin, |
| 447 | const char *protocol, |
| 448 | int ietf_version_or_minus_one, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 449 | void *userdata) |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame] | 450 | { |
| 451 | struct libwebsocket *ws = |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 452 | libwebsocket_client_connect(context, address, port, |
| 453 | ssl_connection, path, host, origin, protocol, |
| 454 | ietf_version_or_minus_one); |
David Brooks | 2c60d95 | 2012-04-20 12:19:01 +0800 | [diff] [blame] | 455 | |
| 456 | if (ws && !ws->user_space && userdata) |
| 457 | ws->user_space = userdata ; |
| 458 | |
| 459 | return ws ; |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 460 | } |