SFML/DSFML/samples/dsfml/socket/socketserver.d

module socketserver;

import dsfml.system.all;
import dsfml.network.all;

version (Tango)
{
    import tango.io.Console;
    import tango.io.Stdout;
}
else
{
    import std.stdio;
}

void main()
{
    //We create a TCP socket for listening incomming client
    SocketTCP listener = new SocketTCP();
    
    //Set a random port for the listener
    if (!listener.listen(9000))
        assert(0);
    
    //Creation of TCP socket 
    SocketTCP client = new SocketTCP();
    IPAddress ipClient;
    
    display("Waiting for client."w);
    
    if (listener.accept(client, ipClient) == SocketStatus.DONE) //This call blocks until client connection
    {
        display("New client connected."w);
        //The packet for retrieving the client message
        Packet p = new Packet();
        display("Waiting for data"w);
        if (client.receive(p) != SocketStatus.DONE) //Assert on reception error
            assert(0);
        

        //Display the string send by the client
        wchar[] c;
        p.get(c);
        display("Packet received : "w ~ c);
        
        //Clear the packet (We could use a new one)
        p.clear();
        
        //and send response to client
        client.send(p.set("Hello from the server !"w));
    }
    read();
}

/**
*   Multilib string display
*/
void display(wchar[] c)
{
    version (Tango)
    { 
        Stdout(c).newline;
    }
    else
    {
        writefln("%s", c);
    }
}

/**
*   Dummy function to prevent console closing on windows
*/
void read()
{
    version (Tango)
    {
        Cin.get();
    }
    else
    {
        readln();
    }
}