test-server/test-server-libuv.c

   1 /*
   2  * libwebsockets-test-server for libev - libwebsockets test implementation
   3  *
   4  * Copyright (C) 2010-2015 Andy Green <andy@warmcat.com>
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public
   8  *  License as published by the Free Software Foundation:
   9  *  version 2.1 of the License.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  *  MA  02110-1301  USA
  20  */
  21
  22 #include "test-server.h"
  23
  24 int close_testing;
  25 int max_poll_elements;
  26 int debug_level = 7;
  27 struct lws_context *context;
  28 struct lws_plat_file_ops fops_plat;
  29
  30 /* http server gets files from this path */
  31 #define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
  32 char *resource_path = LOCAL_RESOURCE_PATH;
  33
  34 /* singlethreaded version --> no locks */
  35
  36 void test_server_lock(int care)
  37 {
  38 }
  39 void test_server_unlock(int care)
  40 {
  41 }
  42
  43 /*
  44  * This demo server shows how to use libwebsockets for one or more
  45  * websocket protocols in the same server
  46  *
  47  * It defines the following websocket protocols:
  48  *
  49  *  dumb-increment-protocol:  once the socket is opened, an incrementing
  50  *                              ascii string is sent down it every 50ms.
  51  *                              If you send "reset\n" on the websocket, then
  52  *                              the incrementing number is reset to 0.
  53  *
  54  *  lws-mirror-protocol: copies any received packet to every connection also
  55  *                              using this protocol, including the sender
  56  */
  57
  58 enum demo_protocols {
  59         /* always first */
  60         PROTOCOL_HTTP = 0,
  61
  62         PROTOCOL_DUMB_INCREMENT,
  63         PROTOCOL_LWS_MIRROR,
  64
  65         /* always last */
  66         DEMO_PROTOCOL_COUNT
  67 };
  68
  69 /* list of supported protocols and callbacks */
  70
  71 static struct lws_protocols protocols[] = {
  72         /* first protocol must always be HTTP handler */
  73
  74         {
  75                 "http-only",            /* name */
  76                 callback_http,          /* callback */
  77                 sizeof (struct per_session_data__http), /* per_session_data_size */
  78                 0,                      /* max frame size / rx buffer */
  79         },
  80         {
  81                 "dumb-increment-protocol",
  82                 callback_dumb_increment,
  83                 sizeof(struct per_session_data__dumb_increment),
  84                 10,
  85         },
  86         {
  87                 "lws-mirror-protocol",
  88                 callback_lws_mirror,
  89                 sizeof(struct per_session_data__lws_mirror),
  90                 128,
  91         },
  92         { NULL, NULL, 0, 0 } /* terminator */
  93 };
  94
  95 static const struct lws_extension exts[] = {
  96         {
  97                 "permessage-deflate",
  98                 lws_extension_callback_pm_deflate,
  99                 "permessage-deflate; client_no_context_takeover; client_max_window_bits"
 100         },
 101         {
 102                 "deflate-frame",
 103                 lws_extension_callback_pm_deflate,
 104                 "deflate_frame"
 105         },
 106         { NULL, NULL, NULL /* terminator */ }
 107 };
 108
 109 void signal_cb(uv_signal_t *watcher, int revents)
 110 {
 111         lwsl_err("Signal %d caught, exiting...\n", watcher->signum);
 112         switch (watcher->signum) {
 113         case SIGTERM:
 114         case SIGINT:
 115                 break;
 116         default:
 117                 signal(SIGABRT, SIG_DFL);
 118                 abort();
 119                 break;
 120         }
 121         lws_libuv_stop(context);
 122 }
 123
 124 static void
 125 uv_timeout_cb(uv_timer_t *w)
 126 {
 127         lwsl_info("%s\n", __func__);
 128         lws_callback_on_writable_all_protocol(context,
 129                                         &protocols[PROTOCOL_DUMB_INCREMENT]);
 130 }
 131
 132 static struct option options[] = {
 133         { "help",       no_argument,            NULL, 'h' },
 134         { "debug",      required_argument,      NULL, 'd' },
 135         { "port",       required_argument,      NULL, 'p' },
 136         { "ssl",        no_argument,            NULL, 's' },
 137         { "allow-non-ssl",      no_argument,    NULL, 'a' },
 138         { "interface",  required_argument,      NULL, 'i' },
 139         { "closetest",  no_argument,            NULL, 'c' },
 140         { "libev",  no_argument,                NULL, 'e' },
 141 #ifndef LWS_NO_DAEMONIZE
 142         { "daemonize",  no_argument,            NULL, 'D' },
 143 #endif
 144         { "resource_path", required_argument,   NULL, 'r' },
 145         { NULL, 0, 0, 0 }
 146 };
 147
 148 int main(int argc, char **argv)
 149 {
 150         struct lws_context_creation_info info;
 151         char interface_name[128] = "";
 152         uv_timer_t timeout_watcher;
 153         const char *iface = NULL;
 154         char cert_path[1024];
 155         char key_path[1024];
 156         int use_ssl = 0;
 157         int opts = 0;
 158         int n = 0;
 159 #ifndef _WIN32
 160         int syslog_options = LOG_PID | LOG_PERROR;
 161 #endif
 162 #ifndef LWS_NO_DAEMONIZE
 163         int daemonize = 0;
 164 #endif
 165
 166         /*
 167          * take care to zero down the info struct, he contains random garbaage
 168          * from the stack otherwise
 169          */
 170         memset(&info, 0, sizeof info);
 171         info.port = 7681;
 172
 173         while (n >= 0) {
 174                 n = getopt_long(argc, argv, "eci:hsap:d:Dr:", options, NULL);
 175                 if (n < 0)
 176                         continue;
 177                 switch (n) {
 178                 case 'e':
 179                         opts |= LWS_SERVER_OPTION_LIBEV;
 180                         break;
 181 #ifndef LWS_NO_DAEMONIZE
 182                 case 'D':
 183                         daemonize = 1;
 184                         #ifndef _WIN32
 185                         syslog_options &= ~LOG_PERROR;
 186                         #endif
 187                         break;
 188 #endif
 189                 case 'd':
 190                         debug_level = atoi(optarg);
 191                         break;
 192                 case 's':
 193                         use_ssl = 1;
 194                         break;
 195                 case 'a':
 196                         opts |= LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT;
 197                         break;
 198                 case 'p':
 199                         info.port = atoi(optarg);
 200                         break;
 201                 case 'i':
 202                         strncpy(interface_name, optarg, sizeof interface_name);
 203                         interface_name[(sizeof interface_name) - 1] = '\0';
 204                         iface = interface_name;
 205                         break;
 206                 case 'c':
 207                         close_testing = 1;
 208                         fprintf(stderr, " Close testing mode -- closes on "
 209                                            "client after 50 dumb increments"
 210                                            "and suppresses lws_mirror spam\n");
 211                         break;
 212                 case 'r':
 213                         resource_path = optarg;
 214                         printf("Setting resource path to \"%s\"\n", resource_path);
 215                         break;
 216                 case 'h':
 217                         fprintf(stderr, "Usage: test-server "
 218                                         "[--port=<p>] [--ssl] "
 219                                         "[-d <log bitfield>] "
 220                                         "[--resource_path <path>]\n");
 221                         exit(1);
 222                 }
 223         }
 224
 225 #if !defined(LWS_NO_DAEMONIZE) && !defined(WIN32)
 226         /*
 227          * normally lock path would be /var/lock/lwsts or similar, to
 228          * simplify getting started without having to take care about
 229          * permissions or running as root, set to /tmp/.lwsts-lock
 230          */
 231         if (daemonize && lws_daemonize("/tmp/.lwsts-lock")) {
 232                 fprintf(stderr, "Failed to daemonize\n");
 233                 return 1;
 234         }
 235 #endif
 236
 237         /* we will only try to log things according to our debug_level */
 238         setlogmask(LOG_UPTO (LOG_DEBUG));
 239         openlog("lwsts", syslog_options, LOG_DAEMON);
 240
 241         /* tell the library what debug level to emit and to send it to syslog */
 242         lws_set_log_level(debug_level, lwsl_emit_syslog);
 243
 244         lwsl_notice("libwebsockets test server libuv - license LGPL2.1+SLE\n");
 245         lwsl_notice("(C) Copyright 2010-2016 Andy Green <andy@warmcat.com>\n");
 246
 247         lwsl_info("Using resource path \"%s\"\n", resource_path);
 248
 249         info.iface = iface;
 250         info.protocols = protocols;
 251         info.extensions = exts;
 252
 253         info.ssl_cert_filepath = NULL;
 254         info.ssl_private_key_filepath = NULL;
 255
 256         if (use_ssl) {
 257                 if (strlen(resource_path) > sizeof(cert_path) - 32) {
 258                         lwsl_err("resource path too long\n");
 259                         return -1;
 260                 }
 261                 sprintf(cert_path, "%s/libwebsockets-test-server.pem",
 262                         resource_path);
 263                 if (strlen(resource_path) > sizeof(key_path) - 32) {
 264                         lwsl_err("resource path too long\n");
 265                         return -1;
 266                 }
 267                 sprintf(key_path, "%s/libwebsockets-test-server.key.pem",
 268                         resource_path);
 269
 270                 info.ssl_cert_filepath = cert_path;
 271                 info.ssl_private_key_filepath = key_path;
 272         }
 273         info.gid = -1;
 274         info.uid = -1;
 275         info.max_http_header_pool = 1;
 276         info.options = opts | LWS_SERVER_OPTION_LIBUV;
 277
 278         context = lws_create_context(&info);
 279         if (context == NULL) {
 280                 lwsl_err("libwebsocket init failed\n");
 281                 return -1;
 282         }
 283
 284         lws_uv_initloop(context, NULL, signal_cb, 0);
 285
 286         uv_timer_init(lws_uv_getloop(context, 0), &timeout_watcher);
 287         uv_timer_start(&timeout_watcher, uv_timeout_cb, 50, 50);
 288
 289         lws_libuv_run(context, 0);
 290
 291         lws_context_destroy(context);
 292         lwsl_notice("libwebsockets-test-server exited cleanly\n");
 293
 294         return 0;
 295 }