relay: close properly connection with the IRC client in case of server disconnection (closes #2038)

ChangeLog.adoc

@@ -36,6 +36,7 @@ Bug fixes::
   * core: fix crash when a custom bar item name is already used by a default bar item (issue #2034)
   * core: fix random timeouts when a lot of concurrent processes are launched with hook_process (issue #2033)
   * irc: revert compute of nick colors to case sensitive way, deprecate again infos "irc_nick_color" and "irc_nick_color_name" (issue #194, issue #2032)
+  * relay: close properly connection with the IRC client in case of server disconnection (issue #2038)
   * ruby: fix use of NULL variable when displaying exception
 
 Build::

src/plugins/relay/irc/relay-irc.c

@@ -616,6 +616,13 @@ relay_irc_signal_irc_disc_cb (const void *pointer, void *data,
 
     if (strcmp ((char *)signal_data, client->protocol_args) == 0)
     {
+        relay_irc_sendf (client,
+                         ":%s ERROR :WeeChat: disconnected from server \"%s\"",
+                         RELAY_IRC_DATA(client, address),
+                         client->protocol_args);
+        relay_irc_sendf (client,
+                         ":%s ERROR :Closing Link",
+                         RELAY_IRC_DATA(client, address));
         relay_client_set_status (client, RELAY_STATUS_DISCONNECTED);
     }