Lolmewn Lolmewn - 1 month ago 9
C# Question

How to send a string over a socket in C#

I am testing this locally, so the IP to connect to can be

localhost or 127.0.0.1


After sending it, it receives a string back. That would also be handy.

Answer
Socket soc = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
System.Net.IPAddress ipAdd = System.Net.IPAddress.Parse(server);
System.Net.IPEndPoint remoteEP = new IPEndPoint(ipAdd, 3456);
soc.Connect(remoteEP);

For connecting to it. To send something:

//Start sending stuf..
byte[] byData = System.Text.Encoding.ASCII.GetBytes("un:" + username + ";pw:" + password);
soc.Send(byData);

And for reading back..

byte[] buffer = new byte[1024];
int iRx = soc.Receive(buffer);
char[] chars = new char[iRx];

System.Text.Decoder d = System.Text.Encoding.UTF8.GetDecoder();
int charLen = d.GetChars(buffer, 0, iRx, chars, 0);
System.String recv = new System.String(chars);
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