provide default empty protocol zero handler if NULL protocols in info

Move the dummy stub protocol into the library as the default
if NULL protocols given, since that is likely to become popular.

Signed-off-by: Andy Green <andy@warmcat.com>

lib/context.c

@@ -155,6 +155,30 @@ lws_protocol_init(struct lws_context *context)
 	return 0;
 }
 
+static int callback_http_dummy(
+		struct lws *wsi, enum lws_callback_reasons reason, void *user,
+		  void *in, size_t len)
+{
+	return 0;
+}
+
+/* list of supported protocols and callbacks */
+
+static const struct lws_protocols protocols_dummy[] = {
+	/* first protocol must always be HTTP handler */
+
+	{
+		"http-only",		/* name */
+		callback_http_dummy,		/* callback */
+		0,	/* per_session_data_size */
+		0,			/* max frame size / rx buffer */
+	},
+	/*
+	 * the other protocols are provided by lws plugins
+	 */
+	{ NULL, NULL, 0, 0 } /* terminator */
+};
+
 LWS_VISIBLE struct lws_vhost *
 lws_create_vhost(struct lws_context *context,
 		 struct lws_context_creation_info *info)
@@ -172,6 +196,9 @@ lws_create_vhost(struct lws_context *context,
 	if (!vh)
 		return NULL;
 
+	if (!info->protocols)
+		info->protocols = &protocols_dummy[0];
+
 	vh->context = context;
 	if (!info->vhost_name)
 		vh->name = "default";

test-server/test-server-v2.0.c

@@ -22,10 +22,7 @@
 #include <getopt.h>
 #include <syslog.h>
 
-int close_testing;
 int debug_level = 7;
-
-volatile int force_exit = 0;
 struct lws_context *context;
 
 /* http server gets files from this path */
@@ -43,7 +40,8 @@ char crl_path[1024] = "";
 
 /*
  * This test server is ONLY this .c file, it's radically simpler than the
- * pre-v2.0 test servers.  For example it has no user callback content.
+ * pre-v2.0 test servers.  For example it has no user callback content or
+ * defines any protocols.
  *
  * To achieve that, it uses the LWS protocol plugins.  Those in turn
  * use libuv.  So you must configure with LWS_WITH_PLUGINS (which implies
@@ -52,39 +50,8 @@ char crl_path[1024] = "";
  * You can find the individual protocol plugin sources in ../plugins
  */
 
-
-/*
- * the mount we attach later will autoserve everything we need, so we
- * don't need to actually do anything in our http callback.
- */
-
-int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
-		  void *in, size_t len)
-{
-	return 0;
-}
-
-/* list of supported protocols and callbacks */
-
-static struct lws_protocols protocols[] = {
-	/* first protocol must always be HTTP handler */
-
-	{
-		"http-only",		/* name */
-		callback_http,		/* callback */
-		0,	/* per_session_data_size */
-		0,			/* max frame size / rx buffer */
-	},
-	/*
-	 * the other protocols are provided by lws plugins
-	 */
-	{ NULL, NULL, 0, 0 } /* terminator */
-};
-
-
 void sighandler(int sig)
 {
-	force_exit = 1;
 	lws_cancel_service(context);
 }
 
@@ -171,7 +138,6 @@ static const struct option options[] = {
 	{ "ssl",	no_argument,		NULL, 's' },
 	{ "allow-non-ssl",	no_argument,	NULL, 'a' },
 	{ "interface",  required_argument,	NULL, 'i' },
-	{ "closetest",  no_argument,		NULL, 'c' },
 	{ "ssl-cert",  required_argument,	NULL, 'C' },
 	{ "ssl-key",  required_argument,	NULL, 'K' },
 	{ "ssl-ca",  required_argument,		NULL, 'A' },
@@ -216,7 +182,7 @@ int main(int argc, char **argv)
 	info.port = 7681;
 
 	while (n >= 0) {
-		n = getopt_long(argc, argv, "eci:hsap:d:Dr:C:K:A:R:vu:g:", options, NULL);
+		n = getopt_long(argc, argv, "ei:hsap:d:Dr:C:K:A:R:vu:g:", options, NULL);
 		if (n < 0)
 			continue;
 		switch (n) {
@@ -254,12 +220,6 @@ int main(int argc, char **argv)
 			interface_name[(sizeof interface_name) - 1] = '\0';
 			iface = interface_name;
 			break;
-		case 'c':
-			close_testing = 1;
-			fprintf(stderr, " Close testing mode -- closes on "
-					   "client after 50 dumb increments"
-					   "and suppresses lws_mirror spam\n");
-			break;
 		case 'r':
 			resource_path = optarg;
 			printf("Setting resource path to \"%s\"\n", resource_path);
@@ -329,12 +289,18 @@ int main(int argc, char **argv)
 	lwsl_notice("libwebsockets test server - license LGPL2.1+SLE\n");
 	lwsl_notice("(C) Copyright 2010-2016 Andy Green <andy@warmcat.com>\n");
 
-	printf("Using resource path \"%s\"\n", resource_path);
+	lwsl_notice(" Using resource path \"%s\"\n", resource_path);
 
 	info.iface = iface;
-	info.protocols = protocols;
+	info.protocols = NULL; /* all protocols from lib / plugins */
 	info.ssl_cert_filepath = NULL;
 	info.ssl_private_key_filepath = NULL;
+	info.gid = gid;
+	info.uid = uid;
+	info.max_http_header_pool = 16;
+	info.options = opts |
+			LWS_SERVER_OPTION_VALIDATE_UTF8 |
+			LWS_SERVER_OPTION_LIBUV; /* plugins require this */
 
 	if (use_ssl) {
 		if (strlen(resource_path) > sizeof(cert_path) - 32) {
@@ -343,26 +309,24 @@ int main(int argc, char **argv)
 		}
 		if (!cert_path[0])
 			sprintf(cert_path, "%s/libwebsockets-test-server.pem",
-								resource_path);
+				resource_path);
 		if (strlen(resource_path) > sizeof(key_path) - 32) {
 			lwsl_err("resource path too long\n");
 			return -1;
 		}
 		if (!key_path[0])
 			sprintf(key_path, "%s/libwebsockets-test-server.key.pem",
-								resource_path);
+				resource_path);
 
 		info.ssl_cert_filepath = cert_path;
 		info.ssl_private_key_filepath = key_path;
 		if (ca_path[0])
 			info.ssl_ca_filepath = ca_path;
+
+		/* redirect guys coming on http */
+		info.options |= LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
 	}
-	info.gid = gid;
-	info.uid = uid;
-	info.max_http_header_pool = 16;
-	info.options = opts |
-			LWS_SERVER_OPTION_VALIDATE_UTF8 |
-			LWS_SERVER_OPTION_LIBUV; /* plugins require this */
+
 	info.extensions = exts;
 	info.timeout_secs = 5;
 	info.ssl_cipher_list = "ECDHE-ECDSA-AES256-GCM-SHA384:"
@@ -391,11 +355,6 @@ int main(int argc, char **argv)
 	 */
 	info.pvo = &pvo;
 
-	if (use_ssl)
-		/* redirect guys coming on http */
-		info.options |=
-			LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
-
 	/*
 	 * As it is, this creates the context and a single Vhost at the same
 	 * time.  You can use LWS_SERVER_OPTION_EXPLICIT_VHOSTS option above
@@ -415,8 +374,8 @@ int main(int argc, char **argv)
 	else
 		lws_libuv_run(context, 0);
 
+	/* when we decided to exit the event loop */
 	lws_context_destroy(context);
-
 	lwsl_notice("libwebsockets-test-server exited cleanly\n");
 
 #ifndef _WIN32