From 3217d66a66be7cc2f542a38a80730dd38685a319 Mon Sep 17 00:00:00 2001
From: HearthstoneBot <hearthstonebot@yahoo.com>
Date: Tue, 18 Mar 2014 13:07:44 +0100
Subject: [PATCH] Fixed a concurrency error in ServerSocket.cs

An issue with concurrent handling of events, and adding to the events
list was fixed.
---
 projects/Bot/src/ServerSocket.cs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/projects/Bot/src/ServerSocket.cs b/projects/Bot/src/ServerSocket.cs
index 7501235..d0487bc 100644
--- a/projects/Bot/src/ServerSocket.cs
+++ b/projects/Bot/src/ServerSocket.cs
@@ -20,6 +20,7 @@ public class ServerSocket
         private const Int32 SERVER_PORT = 8111;
 
         // Work variables
+        private Mutex mutex;
 		private Thread thread;
         private List<string> events;
 
@@ -29,6 +30,8 @@ public ServerSocket()
 
             events = new List<string>();
             thread = new Thread(new ThreadStart(run));
+
+            mutex = new Mutex();
         }
 
         public void stop()
@@ -86,8 +89,12 @@ private void run()
                     string command = sr.ReadToEnd();
                     // Report that we've got a command
                     Log.log("Got network command");
+                    // Wait until it is safe to enter.
+                    mutex.WaitOne();
                     // Append command to lazy list
                     events.Add(command);
+                    // Release the Mutex.
+                    mutex.ReleaseMutex();
 
                     // At this point, we're done;
                     // Close the network stream
@@ -108,6 +115,8 @@ private void run()
 
         public void handle_events()
         {
+            // Wait until it is safe to enter.
+            mutex.WaitOne();
             // Handle all events passed, since last visit
             foreach(string evnt in events)
             {
@@ -115,6 +124,8 @@ public void handle_events()
             }
             // Remove all events for list
             events.Clear();
+            // Release the Mutex.
+            mutex.ReleaseMutex();
         }
 
 		private void handle_event(string data)