从 C# 中的套接字读取
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Reading from a socket in C#
提问by Justin Dearing
I am trying to read ASCII text response from a tcp open streaming socket
我正在尝试从 tcp 打开流套接字读取 ASCII 文本响应
This is what I have come up with so far. I want to know what is the best way to do this that includes error handling. Should I also be checking the SocketError after the Receive call in the do loop?
这是我到目前为止想出的。我想知道包括错误处理在内的最佳方法是什么。我还应该在 do 循环中的 Receive 调用之后检查 SocketError 吗？
IPEndPoint ep = new IPEndPoint(IPAddress.Parse("192.168.1.1"), 9000);
Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
sock.SendTimeout = 5000;
sock.ReceiveTimeout = 5000;
if (null != sock)
{
try
{
sock.Connect(ep);
if (sock.Connected)
{
// Blocks until send returns.
int bytesSent = sock.Send(buffer);
Console.WriteLine("Sent {0} bytes.", bytesSent);
//get the first 4 bytes, should be the lenngth of the rest of the response.
byte[] response = new byte[4];
int bytesRec = sock.Receive(response);
int totalBytesRec = 0;
if (4 == bytesRec)
{
int len = BitConverter.ToInt32(response, 0);
response = new byte[len];
Console.WriteLine("Trying to get {0} bytes.", len);
bytesRec = 0;
do
{
bytesRec = sock.Receive(response);
totalBytesRec += bytesRec;
forecast += Encoding.ASCII.GetString(response, 0, bytesRec);
} while (totalBytesRec < len && bytesRec > 0);
if (totalBytesRec != len)
throw new Exception("The total bytes recieved from manager did not equal the expected bytes");
}
else
throw new Exception("Unable to get the response size from the manager");
Console.WriteLine("Received {0} bytes.", totalBytesRec);
}
}
catch (SocketException ex)
{
Console.WriteLine("{0} Error code: {1}.", ex.Message, ex.ErrorCode);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
sock.Shutdown(SocketShutdown.Both);
sock.Close();
}
}
采纳答案by Andy S
Your best bet is probably TcpClient. There's a great sample that does exactly what you're doing right in the .NET Documentation here:
您最好的选择可能是 TcpClient。有一个很好的示例，可以在此处的 .NET 文档中正确执行您正在执行的操作：
http://msdn.microsoft.com/en-us/library/system.net.sockets.tcpclient.aspx
http://msdn.microsoft.com/en-us/library/system.net.sockets.tcpclient.aspx
Good luck to you!
祝你好运！
