gistfile1.d

import std.socket, std.exception, std.stdio, std.random, std.range;

void main(string args[])
{
    enforce(args.length == 2);
    if(args[1] == "--server")
    {
        auto sock = new Socket(AddressFamily.INET, SocketType.STREAM);
        sock.bind(new InternetAddress("localhost", 9870));
        sock.listen(0);
        auto sock2 = sock.accept();
        writeln("Server running; client connected; Press Enter");
        readln();
        writeln("OK, reading data");
        auto data = sock2.receive(new ubyte[2048]);
        writefln("Read %s bytes", data);
        writeln("Bye");
    }
    else
    {
        auto sock = new Socket(AddressFamily.INET, SocketType.STREAM);
        sock.connect(new InternetAddress("localhost", 9870));
        auto numbers = array(take(rndGen(), 256));
        ubyte[] data = cast(ubyte[])numbers;
        writeln("Connected; Press Enter");
        readln();
        writefln("Sending %s bytes", data.length);
        sock.send(data);
        writeln("Sending done, Press Enter to exit");
        readln();
    }
}