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/* Class to test Datagrams from a client perspective */
import java.io.*;
import java.net.*;
public class ClientDatagram
{
public static void
main(String[] argv) throws IOException
{
System.out.println("Starting datagram tests");
byte[] buf = new byte[2048];
DatagramPacket p = new DatagramPacket(buf, buf.length);
InetAddress addr = InetAddress.getByName("localhost");
/* Execute the daytime UDP service on localhost. You may need to
enable this in inetd to make the test work */
System.out.println("Test 1: Simple daytime test");
try
{
DatagramSocket s = new DatagramSocket();
System.out.println("Socket bound to " + s.getLocalAddress() +
":" + s.getLocalPort());
byte[] sbuf = { 'H', 'I' };
DatagramPacket spack = new DatagramPacket(sbuf, sbuf.length, addr, 13);
s.send(spack);
s.receive(p);
System.out.println("Received " + p.getLength() + " bytes from " +
p.getAddress() + ":" + p.getPort());
byte[] tmp = new byte[p.getLength()];
for (int i = 0; i < p.getLength(); i++)
tmp[i] = buf[i];
System.out.print("Data: " + new String(tmp));
s.close();
System.out.println("PASSED simple datagram test");
}
catch(Exception e)
{
System.out.println("FAILED simple datagram test: " + e);
}
System.out.println("Test 2: Specific host/port binding");
try
{
DatagramSocket s = new DatagramSocket(8765, addr);
if (s.getLocalPort() != 8765)
throw new IOException("Bound to wrong port: " + s.getLocalPort());
if (!s.getLocalAddress().equals(addr))
throw new IOException("Bound to wrong host:" + s.getLocalAddress());
s.close();
System.out.println("PASSED specific host/port binding test");
}
catch (Exception e)
{
System.out.println("FAILED specific host/port binding: " + e);
}
System.out.println("Test 3: Socket Options test");
try
{
DatagramSocket s = new DatagramSocket();
System.out.println("SO_TIMEOUT = " + s.getSoTimeout());
System.out.println("Setting SO_TIMEOUT to 170");
s.setSoTimeout(170);
System.out.println("SO_TIMEOUT = " + s.getSoTimeout());
System.out.println("Setting SO_TIMEOUT to 0");
s.setSoTimeout(0);
System.out.println("SO_TIMEOUT = " + s.getSoTimeout());
s.close();
}
catch(Exception e)
{
System.out.println("WARNING: Problem with SO_TIMEOUT test: " + e.getMessage());
System.out.println("This is ok on Linux");
}
System.out.println("Test 4: Max values test");
try
{
// ServerDatagram sd = new ServerDatagram(37900);
// sd.run();
DatagramSocket s = new DatagramSocket();
byte[] sbuf = new byte[65332];
DatagramPacket spack = new DatagramPacket(sbuf, sbuf.length,
addr, 37900);
s.send(spack);
s.close();
}
catch (Exception e)
{
System.out.println("FAILED max values test: " + e);
}
System.out.println("Datagram testing complete");
}
}
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