int length, count;
byte[] data;
String line;
BufferedReader input;
InetAddress address;
EchoUDPClient client;
input = new BufferedReader(new InputStreamReader(System.in));
address = InetAddress.getByName(host);
client = new EchoUDPClient();
client.open();
// If we don't receive an echo within 5 seconds, assume the packet is lost.
client.setSoTimeout(5000);
System.out.println("Ready to echo to " + host + ".");
// Remember, there are no guarantees about the ordering of returned
// UDP packets, so there is a chance the output may be jumbled.
while ((line = input.readLine()) != null)
{
data = line.getBytes();
client.send(data, address);
count = 0;
do
{
try
{
length = client.receive(data);
}
// Here we catch both SocketException and InterruptedIOException,
// because even though the JDK 1.1 docs claim that
// InterruptedIOException is thrown on a timeout, it seems
// SocketException is also thrown.
catch (SocketException e)
{
// We timed out and assume the packet is lost.
System.err.println(
"SocketException: Timed out and dropped packet");
break;
}
catch (InterruptedIOException e)
{
// We timed out and assume the packet is lost.
System.err.println(
"InterruptedIOException: Timed out and dropped packet");
break;
}
System.out.print(new String(data, 0, length));
count += length;
}
while (count < data.length);
System.out.println();
}
client.close();
}