由于Socket 一次传输数据有限，因此需要多次接受数据传输。
解决办法一：
int numberOfBytesRead = 0; int totalNumberOfBytes = 0; do { numberOfBytesRead = mySocket.Receive(receivedData,totalNumberOfBytes , mySocket.ReceiveBufferSize,SocketFlags.None); totalNumberOfBytes += numberOfBytesRead; } while (numberOfBytesRead > 0);//通过clientSocket接收数据
int receiveLength = 0;
int index = 0;
while (clientSocket.Available > 0)
{ //参数 数据缓存区 起始位置 数据长度 值的按位组合
receiveLength += clientSocket.Receive(result, index, clientSocket.ReceiveBufferSize, SocketFlags.None);
index += receiveLength;
}
return Encoding.GetEncoding("GB18030").GetString(result, 0, index);
原文：https://www.cnblogs.com/asdyzh/p/9949518.html