Sockets: Send strings from Java to C#?

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Hello,

I need to send string messages from Java program to C# program in real time.
There are many examples in the Internet but I can't find anything good for my purpose that is (probably) Java client (sockets code) and c# server (sockets code).
Thank you.

Posted 13-May-11 13:52pm

CodeGust

Updated 13-May-11 15:02pm

v2

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Sandeep Mewara 14-May-11 1:50am

Why not try and write your own? Looking for exact code? Thats the reason you are here for?

Chil Umez 14-May-11 12:52pm

Please mention ur purpose so that some one can suggest.
Otherwise u get same links from everyone where you will have problem in selecting good one

3 solutions

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Kim Togo · Answer 1 · 2011-05-13T19:36:00

Solution 1

For the C# part, check out TcpListener [^] and TcpClient[^] both example from MSDN are good beginner samples and should get you started.

Posted 13-May-11 19:36pm

Kim Togo

Updated 13-May-11 19:37pm

v2

Richard MacCutchan · Answer 2 · 2011-05-13T23:06:00

Solution 2

And lots more here[^].

Posted 13-May-11 23:06pm

Richard MacCutchan

CodeGust · Answer 3 · 2011-06-29T09:27:00

I've found a good, working solution. Using UDP sockets:

Java code:
<code>
public void runJavaSocket() {
System.out.println("Java Sockets Program has started."); int i=0;

try {
DatagramSocket socket = new DatagramSocket();
System.out.println("Sending the udp socket...");
// Send the Message "HI"
socket.send(toDatagram("HI",InetAddress.getByName("127.0.0.1"),3800));
while (true)
{
System.out.println("Sending hi " + i);
Thread.currentThread();
Thread.sleep(1000);
socket.send(toDatagram("HI " + String.valueOf(i),InetAddress.getByName("127.0.0.1"),3800));
i++;
}
} catch (Exception e) {
e.printStackTrace();
}
public DatagramPacket toDatagram(
String s, InetAddress destIA, int destPort) {
// Deprecated in Java 1.1, but it works:
byte[] buf = new byte[s.length() + 1];
s.getBytes(0, s.length(), buf, 0);
// The correct Java 1.1 approach, but it's
// Broken (it truncates the String):
// byte[] buf = s.getBytes();
return new DatagramPacket(buf, buf.length,
destIA, destPort);
}
</code>

C# code:
<code>
string returnData;
byte[] receiveBytes;
//ConsoleKeyInfo cki = new ConsoleKeyInfo();

using (UdpClient udpClient = new UdpClient(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 3800)))
{
IPEndPoint remoteIpEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 3800);
while (true)
{
receiveBytes = udpClient.Receive(ref remoteIpEndPoint);
returnData = Encoding.ASCII.GetString(receiveBytes);
Console.WriteLine(returnData);
}
}
<code>