FS-8560 [mod_http_cache] add new parameter, connect-timeout

This is the maximum time to wait, in seconds, for the HTTP GET or PUT to connect.
If this value is not set or is set to 0, the default setting of 300 seconds is used.

src/mod/applications/mod_http_cache/conf/autoload_configs/http_cache.conf.xml

@@ -8,6 +8,8 @@
     <param name="ssl-cacert" value="$${base_dir}/conf/cacert.pem"/>
     <param name="ssl-verifyhost" value="true"/>
     <param name="ssl-verifypeer" value="true"/>
+    <!-- default is 300 seconds, override here -->
+    <!--param name="connect-timeout" value="300"/>
   </settings>
 
   <profiles>

src/mod/applications/mod_http_cache/mod_http_cache.c

@@ -199,6 +199,8 @@ struct url_cache {
 	int ssl_verifyhost;
 	/** True if http/https file formats should be loaded */
 	int enable_file_formats;
+	/** How long to wait, in seconds, for TCP connection.  If 0, use default value of 300 seconds */
+	long connect_timeout;
 };
 static url_cache_t gcache;
 
@@ -326,6 +328,9 @@ static switch_status_t http_put(url_cache_t *cache, http_profile_t *profile, swi
 	switch_curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1);
 	switch_curl_easy_setopt(curl_handle, CURLOPT_MAXREDIRS, 10);
 	switch_curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "freeswitch-http-cache/1.0");
+	if (cache->connect_timeout > 0) {
+		switch_curl_easy_setopt(curl_handle, CURLOPT_CONNECTTIMEOUT, cache->connect_timeout);
+	}
 	if (!cache->ssl_verifypeer) {
 		switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0L);
 	} else {
@@ -1075,6 +1080,9 @@ static switch_status_t http_get(url_cache_t *cache, http_profile_t *profile, cac
 		switch_curl_easy_setopt(curl_handle, CURLOPT_HEADERFUNCTION, get_header_callback);
 		switch_curl_easy_setopt(curl_handle, CURLOPT_WRITEHEADER, (void *) url);
 		switch_curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "freeswitch-http-cache/1.0");
+		if (cache->connect_timeout > 0) {
+			switch_curl_easy_setopt(curl_handle, CURLOPT_CONNECTTIMEOUT, cache->connect_timeout);
+		}
 		if (!cache->ssl_verifypeer) {
 			switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0L);
 		} else {
@@ -1477,6 +1485,7 @@ static switch_status_t do_config(url_cache_t *cache)
 	cache->ssl_verifyhost = 1;
 	cache->ssl_verifypeer = 1;
 	cache->enable_file_formats = 0;
+	cache->connect_timeout = 0;
 
 	/* get params */
 	settings = switch_xml_child(cfg, "settings");
@@ -1513,6 +1522,9 @@ static switch_status_t do_config(url_cache_t *cache)
 			} else if (!strcasecmp(var, "ssl-verifypeer")) {
 				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Setting ssl-verifypeer to %s\n", val);
 				cache->ssl_verifypeer = !switch_false(val); /* only disable if explicitly set to false */
+			} else if (!strcasecmp(var, "connect-timeout")) {
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Setting connect-timeout to %s\n", val);
+				cache->connect_timeout = atoi(val);
 			} else {
 				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Unsupported param: %s\n", var);
 			}
@@ -1623,6 +1635,11 @@ static switch_status_t do_config(url_cache_t *cache)
 		status = SWITCH_STATUS_TERM;
 		goto done;
 	}
+	if (cache->connect_timeout < 0) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "connect-timeout must be >= 0\n");
+		status = SWITCH_STATUS_TERM;
+		goto done;
+	}
 
 	cache->max_url = max_urls;
 	cache->default_max_age = (default_max_age_sec * 1000 * 1000); /* convert from seconds to nanoseconds */