Thanks kinoc for your improved IRC Gateway patch as referenced in mantis issue 390.

CONTRIBUTORS.txt

@@ -32,6 +32,7 @@ Patches
 * BigFootAg
 * CharlieO
 * jhurliman (LLSD Login)
+* kinoc
 
 LSL Devs
 

OpenSim/Region/Environment/Modules/ChatModule.cs

@@ -163,6 +163,12 @@ namespace OpenSim.Region.Environment.Modules
                 fromAgentID = e.Sender.AgentId;
             }
 
+            // Try to reconnect to server if not connected
+            if ((m_irc.Enabled)&&(!m_irc.Connected))
+            {
+                m_irc.Connect(m_scenes);
+            }
+
             if (e.Message.Length > 0)
             {
                 if (m_irc.Connected && (avatar != null)) // this is to keep objects from talking to IRC
@@ -205,6 +211,7 @@ namespace OpenSim.Region.Environment.Modules
         private bool m_connected = false;
 
         private List<Scene> m_scenes = null;
+        private List<Scene> m_last_scenes = null;
         private LogBase m_log;
 
         public IRCChatModule(IConfigSource config)
@@ -214,6 +221,19 @@ namespace OpenSim.Region.Environment.Modules
             m_writer = null;
             m_reader = null;
 
+            // configuration in OpenSim.ini
+            // [IRC]
+            // server  = chat.freenode.net
+            // nick    = OSimBot_mysim
+            // ;username = OSimBot_mysim
+            // channel = #opensim-regions
+            // port = 6667
+            //
+            // Traps I/O disconnects so it does not crash the sim
+            // Trys to reconnect if disconnected and someone says something
+            // Tells IRC server "QUIT" when doing a close (just to be nice)
+            // Default port back to 6667
+
             try
             {
                 m_server = config.Configs["IRC"].GetString("server");
@@ -238,7 +258,7 @@ namespace OpenSim.Region.Environment.Modules
             try
             {
                 m_scenes = scenes;
-
+                m_last_scenes = scenes;
                 m_tcp = new TcpClient(m_server, (int) m_port);
                 m_log.Verbose("IRC", "Connecting...");
                 m_stream = m_tcp.GetStream();
@@ -290,14 +310,20 @@ namespace OpenSim.Region.Environment.Modules
                 m_log.Error("IRC", "Disconnected from IRC server.");
                 listener.Abort();
                 pingSender.Abort();
+                m_writer.Close();
+                m_reader.Close();
+                m_tcp.Close();
                 m_connected = false;
+                if (m_enabled) { Connect(m_last_scenes); }
             }
         }
 
         private Dictionary<string, string> ExtractMsg(string input)
         {
+            m_log.Verbose("IRC", "ExtractMsg: " + input);
             Dictionary<string, string> result = null;
-            string regex = @":(?<nick>\w*)!~(?<user>\S*) PRIVMSG (?<channel>\S+) :(?<msg>.*)";
+            //string regex = @":(?<nick>\w*)!~(?<user>\S*) PRIVMSG (?<channel>\S+) :(?<msg>.*)";
+            string regex = @":(?<nick>\w*)!(?<user>\S*) PRIVMSG (?<channel>\S+) :(?<msg>.*)";
             Regex RE = new Regex(regex, RegexOptions.Multiline);
             MatchCollection matches = RE.Matches(input);
             // Get some direct matches $1 $4 is a 
@@ -323,11 +349,25 @@ namespace OpenSim.Region.Environment.Modules
         public void PingRun()
         {
             while (true)
+            {
+                try
                 {
                     m_writer.WriteLine("PING :" + m_server);
                     m_writer.Flush();
                     Thread.Sleep(15000);
                 }
+                catch (IOException)
+                {
+                    m_log.Error("IRC", "Disconnected from IRC server.");
+                    listener.Abort();
+                    pingSender.Abort();
+                    m_writer.Close();
+                    m_reader.Close();
+                    m_tcp.Close();
+                    m_connected = false;
+                    if (m_enabled) { Connect(m_last_scenes); }
+                }
+           }
         }
 
         public void ListenerRun()
@@ -335,6 +375,8 @@ namespace OpenSim.Region.Environment.Modules
             string inputLine;
             LLVector3 pos = new LLVector3(128, 128, 20);
             while (true)
+            {
+                try
                 {
                     while ((inputLine = m_reader.ReadLine()) != null)
                     {
@@ -362,10 +404,25 @@ namespace OpenSim.Region.Environment.Modules
                     }
                     Thread.Sleep(50);
                 }
+                catch (IOException)
+                {
+                    m_log.Error("IRC", "Disconnected from IRC server.");
+                    listener.Abort();
+                    pingSender.Abort();
+                    m_writer.Close();
+                    m_reader.Close();
+                    m_tcp.Close();
+                    m_connected = false;
+                    if (m_enabled) { Connect(m_last_scenes); }
+                }
+
+            }
         }
 
         public void Close()
         {
+            m_writer.WriteLine("QUIT :" + m_nick+" to "+m_channel+" wormhole with "+m_server+" closing");
+            m_writer.Flush();
             listener.Abort();
             pingSender.Abort();
             m_writer.Close();