C# UDP network stream...

Hello. Trying to write a program using UDP that reads from the network... I'm not using the UDPClient class (I probably should). I'm new to socket programming (and somewhat new to C#); all I need is to read the network stream, but the NetworkStream does not work with connectionless sockets (UDP); anyone know how I can do this? I've been searching the www with no luck so far. Here's my code so far (I X'd out the IP address and port to protect the innocent): using System; using System.Text; using System.Net; using System.Net.Sockets; namespace SocketTest { class Class1 { static void Main(string[] args) { IPAddress ia = IPAddress.Parse("XX.XXX.XXX.XXX"); IPEndPoint ie = new IPEndPoint(ia, XXXX); byte[] msg = Encoding.ASCII.GetBytes("1234stilltestingalot"); Socket ed = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); ed.SendTo(msg,ie); ed.Close(); } } } This program sends a message just fine, but I have to use a packet analyzer to read the server output. I'd like the server output to display in the console. Any help would be appreciated! Thank you!

Hmmmm... the code below seems to be working... I'm receiving a string of text from the server (with a lot of blank space that "Trim" won't take care of). Is this the only way to receive text using UDP connectionless sockets? using System; using System.Text; using System.Net; using System.Net.Sockets; namespace SocketTest { class Class1 { static void Main(string[] args) { Console.WriteLine("Enter the stuff to send: "); string blah = Console.ReadLine(); IPAddress ia = IPAddress.Parse("XX.XXX.XXX.XXX"); IPEndPoint ie = new IPEndPoint(ia, XXX); EndPoint EndPointYup = (ie); byte[] msg = Encoding.ASCII.GetBytes(blah.ToCharArray()); byte[] receiveBuffer = new byte[512]; Socket ed = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); ed.SendTo(msg,ie); int recv = ed.ReceiveFrom(receiveBuffer, ref EndPointYup); string stuff = System.Text.Encoding.ASCII.GetString(receiveBuffer); ed.Close(); Console.WriteLine(stuff); } } } Now if I can just figure out how to get the time of transmission (in the manner of PING).

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

ewomack200021y ago
Hmmmm... the code below seems to be working... I'm receiving a string of text from the server (with a lot of blank space that "Trim" won't take care of). Is this the only way to receive text using UDP connectionless sockets? using System; using System.Text; using System.Net; using System.Net.Sockets; namespace SocketTest { class Class1 { static void Main(string[] args) { Console.WriteLine("Enter the stuff to send: "); string blah = Console.ReadLine(); IPAddress ia = IPAddress.Parse("XX.XXX.XXX.XXX"); IPEndPoint ie = new IPEndPoint(ia, XXX); EndPoint EndPointYup = (ie); byte[] msg = Encoding.ASCII.GetBytes(blah.ToCharArray()); byte[] receiveBuffer = new byte[512]; Socket ed = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); ed.SendTo(msg,ie); int recv = ed.ReceiveFrom(receiveBuffer, ref EndPointYup); string stuff = System.Text.Encoding.ASCII.GetString(receiveBuffer); ed.Close(); Console.WriteLine(stuff); } } } Now if I can just figure out how to get the time of transmission (in the manner of PING).