Sending and Receiving Messages - TCP/IP Sockets in Java Practical Guide for Programmers - page 56

1. Socket setup: line 13

2. Send using text encoding: lines 18-24

3. Receive using binary encoding: lines 26-30

RecvTCP.java

0 import java.io.*; // for Input/OutputStream
1 import java.net.*; // for Socket and ServerSocket
2
3 public class RecvTCP {
4
5

public static void main(String args[]) throws Exception {

6
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if (args.length != 1) // Test for correct # of args

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

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int port = Integer.parseInt(args[0]); // Receiving Port

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ServerSocket servSock = new ServerSocket(port);

13

Socket clntSock = servSock.accept();

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// Receive text−encoded quote

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ItemQuoteDecoder decoder = new ItemQuoteDecoderText();

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ItemQuote quote = decoder.decode(clntSock.getInputStream());

18 System.out.println("Received Text−Encoded Quote:");

19 System.out.println(quote);

20
21 // Repeat quote with binary encoding, adding 10 cents to the price

22 ItemQuoteEncoder encoder = new ItemQuoteEncoderBin();

23 quote.unitPrice += 10; // Add 10 cents to unit price

24 System.out.println("Sending (binary)...");

25 clntSock.getOutputStream().write(encoder.encode(quote));

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clntSock.close();

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servSock.close();

29

}

30 }

RecvTCP.java

1. Socket setup: line 12
2. Accept client connection: line 13