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add try catch

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Sem van der Hoeven
2020-10-21 22:41:39 +02:00
parent 754c1c5db9
commit e8a72e164f
2 changed files with 51 additions and 36 deletions
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81
Server/Models/ServerClient.cs
View File

@@ -6,6 +6,7 @@ using SharedClientServer;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net.Sockets;
using System.Text;
using static SharedClientServer.JSONConvert;
@@ -45,48 +46,56 @@ namespace Server.Models
if (ar == null || (!ar.IsCompleted) || (!this.stream.CanRead) || !this.tcpClient.Client.Connected)
return;
int bytesReceived = this.stream.EndRead(ar);
if (totalBufferReceived + bytesReceived > 1024)
try
{
throw new OutOfMemoryException("buffer is too small!");
}
int bytesReceived = this.stream.EndRead(ar);
// copy the received bytes into the buffer
Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, bytesReceived);
// add the bytes we received to the total amount
totalBufferReceived += bytesReceived;
// calculate the expected length of the message
int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
while (totalBufferReceived >= expectedMessageLength)
{
// we have received the full packet
byte[] message = new byte[expectedMessageLength];
// copy the total buffer contents into the message array so we can pass it to the handleIncomingMessage method
Array.Copy(totalBuffer, 0, message, 0, expectedMessageLength);
HandleIncomingMessage(message);
// move the contents of the totalbuffer to the start of the array
Array.Copy(totalBuffer, expectedMessageLength, totalBuffer, 0, (totalBufferReceived - expectedMessageLength));
// remove the length of the expected message from the total buffer
totalBufferReceived -= expectedMessageLength;
// and set the new expected length to the rest that is still in the buffer
expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
if (expectedMessageLength == 0)
if (totalBufferReceived + bytesReceived > 1024)
{
break;
}
throw new OutOfMemoryException("buffer is too small!");
}
// copy the received bytes into the buffer
Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, bytesReceived);
// add the bytes we received to the total amount
totalBufferReceived += bytesReceived;
// calculate the expected length of the message
int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
while (totalBufferReceived >= expectedMessageLength)
{
// we have received the full packet
byte[] message = new byte[expectedMessageLength];
// copy the total buffer contents into the message array so we can pass it to the handleIncomingMessage method
Array.Copy(totalBuffer, 0, message, 0, expectedMessageLength);
HandleIncomingMessage(message);
// move the contents of the totalbuffer to the start of the array
Array.Copy(totalBuffer, expectedMessageLength, totalBuffer, 0, (totalBufferReceived - expectedMessageLength));
// remove the length of the expected message from the total buffer
totalBufferReceived -= expectedMessageLength;
// and set the new expected length to the rest that is still in the buffer
expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
if (expectedMessageLength == 0)
{
break;
}
}
// start reading for a new message
stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnRead), null);
}
// start reading for a new message
stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnRead), null);
catch (IOException e)
{
tcpClient.Close();
ServerCommunication.INSTANCE.ServerClientDisconnect(this);
}
}

6
Server/Models/ServerCommunication.cs
View File

@@ -97,6 +97,12 @@ namespace Server.Models
}
}
public void ServerClientDisconnect(ServerClient serverClient)
{
// remove from serverclientsinlobbies
// send leave message
}
public void SendToAllExcept(string username, byte[] message)
{
foreach (ServerClient sc in serverClients)