[Actual combat] UDP System.Net.Sockets.SocketException

Little scum · Posted on 3/9/2017 10:16:26 AM

System.Net.Sockets.SocketException (0x80004005): The remote host forced an existing connection to close. In System.Net.Sockets.Socket.ReceiveFrom(Byte[] b

During UDP communication, using try... catch statement always gets an error when accepting data:
System.Net.Sockets.SocketException (0x80004005): The remote host forced an existing connection to close.
The stupidest solution in the first place was to do nothing in the catch statement and let the listening port function continue to run. But this is not a long-term solution, and I searched online for a long time and found Microsoft's explanation.

Microsoft's explanation: http://support.microsoft.com/kb/263823

Solution:

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Little scum · Posted on 3/9/2017 10:17:54 AM

After initializing the object, set the properties as follows:
                  uint IOC_IN = 0x80000000;
                  uint IOC_VENDOR = 0x18000000;
                  uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
//uc为接收数据所使用的UdpClient，不同程序自己手改
         uc. Client.IOControl((int)SIO_UDP_CONNRESET, new byte[] {Convert.ToByte(false)}, null);

Socket.IOControl method (IOControlCode, byte[], byte[])
Use IOControlCode to specify control code to set a low-level operating mode for the socket.
parameter
ioControlCode
An IOControlCode value that specifies the control code for the action to be performed.
optionInValue
An array of type Byte containing the input data required by the operation.
optionOutValue
An array of type Byte that contains the output data returned by the operation.

[Source] [Actual combat] UDP System.Net.Sockets.SocketException

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