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         {
  93                 "lws-status",
  94                 callback_lws_status,
  95                 sizeof(struct per_session_data__lws_status),
  96                 128,
  97         },
  98         { NULL, NULL, 0, 0 } /* terminator */
  99 };
 100
 101 static const struct lws_extension exts[] = {
 102         {
 103                 "permessage-deflate",
 104                 lws_extension_callback_pm_deflate,
 105                 "permessage-deflate; client_no_context_takeover; client_max_window_bits"
 106         },
 107         {
 108                 "deflate-frame",
 109                 lws_extension_callback_pm_deflate,
 110                 "deflate_frame"
 111         },
 112         { NULL, NULL, NULL /* terminator */ }
 113 };
 114
 115 void signal_cb(uv_signal_t *watcher, int revents)
 116 {
 117         lwsl_err("Signal %d caught, exiting...\n", watcher->signum);
 118         switch (watcher->signum) {
 119         case SIGTERM:
 120         case SIGINT:
 121                 break;
 122         default:
 123                 signal(SIGABRT, SIG_DFL);
 124                 abort();
 125                 break;
 126         }
 127         lws_libuv_stop(context);
 128 }
 129
 130 static void
 131 uv_timeout_cb_dumb_increment(uv_timer_t *w)
 132 {
 133         lws_callback_on_writable_all_protocol(context,
 134                                         &protocols[PROTOCOL_DUMB_INCREMENT]);
 135 }
 136
 137 static struct option options[] = {
 138         { "help",       no_argument,            NULL, 'h' },
 139         { "debug",      required_argument,      NULL, 'd' },
 140         { "port",       required_argument,      NULL, 'p' },
 141         { "ssl",        no_argument,            NULL, 's' },
 142         { "allow-non-ssl",      no_argument,    NULL, 'a' },
 143         { "interface",  required_argument,      NULL, 'i' },
 144         { "closetest",  no_argument,            NULL, 'c' },
 145         { "libev",  no_argument,                NULL, 'e' },
 146 #ifndef LWS_NO_DAEMONIZE
 147         { "daemonize",  no_argument,            NULL, 'D' },
 148 #endif
 149         { "resource_path", required_argument,   NULL, 'r' },
 150         { NULL, 0, 0, 0 }
 151 };
 152
 153 int main(int argc, char **argv)
 154 {
 155         struct lws_context_creation_info info;
 156         char interface_name[128] = "";
 157         uv_timer_t timeout_watcher;
 158         const char *iface = NULL;
 159         char cert_path[1024];
 160         char key_path[1024];
 161         int use_ssl = 0;
 162         int opts = 0;
 163         int n = 0;
 164 #ifndef _WIN32
 165         int syslog_options = LOG_PID | LOG_PERROR;
 166 #endif
 167 #ifndef LWS_NO_DAEMONIZE
 168         int daemonize = 0;
 169 #endif
 170
 171         /*
 172          * take care to zero down the info struct, he contains random garbaage
 173          * from the stack otherwise
 174          */
 175         memset(&info, 0, sizeof info);
 176         info.port = 7681;
 177
 178         while (n >= 0) {
 179                 n = getopt_long(argc, argv, "eci:hsap:d:Dr:", options, NULL);
 180                 if (n < 0)
 181                         continue;
 182                 switch (n) {
 183                 case 'e':
 184                         opts |= LWS_SERVER_OPTION_LIBEV;
 185                         break;
 186 #ifndef LWS_NO_DAEMONIZE
 187                 case 'D':
 188                         daemonize = 1;
 189                         #ifndef _WIN32
 190                         syslog_options &= ~LOG_PERROR;
 191                         #endif
 192                         break;
 193 #endif
 194                 case 'd':
 195                         debug_level = atoi(optarg);
 196                         break;
 197                 case 's':
 198                         use_ssl = 1;
 199                         break;
 200                 case 'a':
 201                         opts |= LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT;
 202                         break;
 203                 case 'p':
 204                         info.port = atoi(optarg);
 205                         break;
 206                 case 'i':
 207                         strncpy(interface_name, optarg, sizeof interface_name);
 208                         interface_name[(sizeof interface_name) - 1] = '\0';
 209                         iface = interface_name;
 210                         break;
 211                 case 'c':
 212                         close_testing = 1;
 213                         fprintf(stderr, " Close testing mode -- closes on "
 214                                            "client after 50 dumb increments"
 215                                            "and suppresses lws_mirror spam\n");
 216                         break;
 217                 case 'r':
 218                         resource_path = optarg;
 219                         printf("Setting resource path to \"%s\"\n", resource_path);
 220                         break;
 221                 case 'h':
 222                         fprintf(stderr, "Usage: test-server "
 223                                         "[--port=<p>] [--ssl] "
 224                                         "[-d <log bitfield>] "
 225                                         "[--resource_path <path>]\n");
 226                         exit(1);
 227                 }
 228         }
 229
 230 #if !defined(LWS_NO_DAEMONIZE) && !defined(WIN32)
 231         /*
 232          * normally lock path would be /var/lock/lwsts or similar, to
 233          * simplify getting started without having to take care about
 234          * permissions or running as root, set to /tmp/.lwsts-lock
 235          */
 236         if (daemonize && lws_daemonize("/tmp/.lwsts-lock")) {
 237                 fprintf(stderr, "Failed to daemonize\n");
 238                 return 1;
 239         }
 240 #endif
 241
 242         /* we will only try to log things according to our debug_level */
 243         setlogmask(LOG_UPTO (LOG_DEBUG));
 244         openlog("lwsts", syslog_options, LOG_DAEMON);
 245
 246         /* tell the library what debug level to emit and to send it to syslog */
 247         lws_set_log_level(debug_level, lwsl_emit_syslog);
 248
 249         lwsl_notice("libwebsockets test server libuv - license LGPL2.1+SLE\n");
 250         lwsl_notice("(C) Copyright 2010-2016 Andy Green <andy@warmcat.com>\n");
 251
 252         lwsl_info("Using resource path \"%s\"\n", resource_path);
 253
 254         info.iface = iface;
 255         info.protocols = protocols;
 256         info.extensions = exts;
 257
 258         info.ssl_cert_filepath = NULL;
 259         info.ssl_private_key_filepath = NULL;
 260
 261         if (use_ssl) {
 262                 if (strlen(resource_path) > sizeof(cert_path) - 32) {
 263                         lwsl_err("resource path too long\n");
 264                         return -1;
 265                 }
 266                 sprintf(cert_path, "%s/libwebsockets-test-server.pem",
 267                         resource_path);
 268                 if (strlen(resource_path) > sizeof(key_path) - 32) {
 269                         lwsl_err("resource path too long\n");
 270                         return -1;
 271                 }
 272                 sprintf(key_path, "%s/libwebsockets-test-server.key.pem",
 273                         resource_path);
 274
 275                 info.ssl_cert_filepath = cert_path;
 276                 info.ssl_private_key_filepath = key_path;
 277         }
 278         info.gid = -1;
 279         info.uid = -1;
 280         info.max_http_header_pool = 1;
 281         info.timeout_secs = 5;
 282         info.options = opts | LWS_SERVER_OPTION_LIBUV;
 283
 284         context = lws_create_context(&info);
 285         if (context == NULL) {
 286                 lwsl_err("libwebsocket init failed\n");
 287                 return -1;
 288         }
 289
 290         lws_uv_initloop(context, NULL, signal_cb, 0);
 291
 292         uv_timer_init(lws_uv_getloop(context, 0), &timeout_watcher);
 293         uv_timer_start(&timeout_watcher, uv_timeout_cb_dumb_increment, 50, 50);
 294
 295         lws_libuv_run(context, 0);
 296
 297         lws_context_destroy(context);
 298         lwsl_notice("libwebsockets-test-server exited cleanly\n");
 299
 300         return 0;
 301 }