Minecraft 1.11: Raise chat message max length to 256

MinecraftClient/McTcpClient.cs

@@ -538,21 +538,22 @@ namespace MinecraftClient
         /// <returns>True if the text was sent with no error</returns>
         public bool SendText(string text)
         {
-            if (text.Length > 100) //Message is too long?
+            int maxLength = handler.GetMaxChatMessageLength();
+            if (text.Length > maxLength) //Message is too long?
             {
                 if (text[0] == '/')
                 {
-                    //Send the first 100 chars of the command
+                    //Send the first 100/256 chars of the command
-                    text = text.Substring(0, 100);
+                    text = text.Substring(0, maxLength);
                     return handler.SendChatMessage(text);
                 }
                 else
                 {
                     //Send the message splitted into several messages
-                    while (text.Length > 100)
+                    while (text.Length > maxLength)
                     {
-                        handler.SendChatMessage(text.Substring(0, 100));
+                        handler.SendChatMessage(text.Substring(0, maxLength));
-                        text = text.Substring(100, text.Length - 100);
+                        text = text.Substring(maxLength, text.Length - maxLength);
                         if (Settings.splitMessageDelay.TotalSeconds > 0)
                             Thread.Sleep(Settings.splitMessageDelay);
                     }

MinecraftClient/Protocol/Handlers/Protocol16.cs

@@ -586,6 +586,11 @@ namespace MinecraftClient.Protocol.Handlers
             catch (System.IO.IOException) { }
         }
 
+        public int GetMaxChatMessageLength()
+        {
+            return 100;
+        }
+
         public bool SendChatMessage(string message)
         {
             if (String.IsNullOrEmpty(message))

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -21,6 +21,7 @@ namespace MinecraftClient.Protocol.Handlers
         private const int MC19Version = 107;
         private const int MC191Version = 108;
         private const int MC110Version = 210;
+        private const int MC111Version = 315;
 
         private int compression_treshold = 0;
         private bool autocomplete_received = false;
@@ -1411,6 +1412,17 @@ namespace MinecraftClient.Protocol.Handlers
             }
         }
 
+        /// <summary>
+        /// Get max length for chat messages
+        /// </summary>
+        /// <returns>Max length, in characters</returns>
+        public int GetMaxChatMessageLength()
+        {
+            return protocolversion >= MC111Version
+                ? 256
+                : 100;
+        }
+
         /// <summary>
         /// Send a chat message to the server
         /// </summary>

MinecraftClient/Protocol/IMinecraftCom.cs

@@ -28,6 +28,12 @@ namespace MinecraftClient.Protocol
         /// <param name="message">Reason</param>
         void Disconnect();
 
+        /// <summary>
+        /// Get max length for chat messages
+        /// </summary>
+        /// <returns>Max length, in characters</returns>
+        int GetMaxChatMessageLength();
+
         /// <summary>
         /// Send a chat message or command to the server
         /// </summary>