Sending and Receiving Messages - TCP/IP Sockets in Java Practical Guide for Programmers - page 55

3.4.3 Sending and Receiving

The encodings presented above can be used with both Socket s and DatagramSocket s. We show
the TCP usage first.

SendTCP.java

0 import java.io.*; // for Input/OutputStream
1 import java.net.*; // for Socket
2
3 public class SendTCP {
4
5 public static void main(String args[]) throws Exception {

6
7

if (args.length != 2) // Test for correct # of args

8

throw new IllegalArgumentException("Parameter(s): <Destination> <Port>");

9
10

InetAddress destAddr = InetAddress.getByName(args[0]); // Destination address

11

int destPort = Integer.parseInt(args[1]); // Destination port

12
13

Socket sock = new Socket(destAddr, destPort);

14
15

ItemQuote quote = new ItemQuote(1234567890987654L, "5mm Super Widgets",

16

1000, 12999, true, false);

17
18

// Send text−encoded quote

19

ItemQuoteEncoder coder = new ItemQuoteEncoderText();

20

byte[] codedQuote = coder.encode(quote);

21

System.out.println("Sending Text−Encoded Quote (" +

22

codedQuote.length + " bytes): ");

23 System.out.println(quote);

24 sock.getOutputStream().write(codedQuote);

25
26 // Receive binary−encoded quote

27 ItemQuoteDecoder decoder = new ItemQuoteDecoderBin();

28 ItemQuote receivedQuote = decoder.decode(sock.getInputStream());

29 System.out.println("Received Binary−Encode Quote:");

30

System.out.println(receivedQuote);

31
32

sock.close();

33

}

34 }

SendTCP.java