Java ServerSocket setReceiveBufferSize() method

The setReceiveBufferSize() method of Java ServerSocket class sets a default proposed value for the SO_RCVBUF option for sockets accepted from this ServerSocket. The Buffer size must be greater than 0.

Syntax

Parameter

The 'size' parameter represents the size to which receive buffer size is to be set.

Return

Throws

SocketException- if there is an error in the underlying protocol, such as a TCP error.

IllegalArgumentException- if the value is 0 or negative.

Example 1

import java.io.IOException;
import java.net.ServerSocket;
public class JavaServerSocketSetReceiveBufferSizeExample1  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
//the buffer size should be greater than 0, it will give an exception
intsize=89;
//setReceiveBufferSize() sets a default proposed value for the SO_RCVBUF option for sockets
serverSocket.setReceiveBufferSize(size);
//getSoTimeout() method returns buffer size
System.out.println("Buffer size: "+serverSocket.getReceiveBufferSize());
    }
}

Output:

Buffer size: 89

Example 2

import java.io.IOException;
import java.net.ServerSocket;
public class JavaServerSocketSetReceiveBufferSizeExample2  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
//the buffer size should be greater than 0, it will give an exception
intsize=-89;
//setReceiveBufferSize() sets a default proposed value for the SO_RCVBUF option for sockets
serverSocket.setReceiveBufferSize(size);
//getSoTimeout() method returns buffer size
System.out.println("Buffer size: "+serverSocket.getReceiveBufferSize());
    }
}

Output:

Exception in thread "main" java.lang.IllegalArgumentException: negative receive size
	at java.net.ServerSocket.setReceiveBufferSize(ServerSocket.java:845)
	at com.javaTpoint.JavaServerSocketSetReceiveBufferSizeExample2.main(JavaServerSocketSetReceiveBufferSizeExample2.java:11)

Example 3

import java.io.IOException;
import java.net.ServerSocket;
public class JavaServerSocketSetReceiveBufferSizeExample3  {
public static void main(String[] args) throws IOException {
ServerSocketserverSocket = new ServerSocket();
//the buffer size should be greater than 0, it will give an exception
intsize=-89;
//closing the server socket
serverSocket.close();
//setReceiveBufferSize() sets a default proposed value for the SO_RCVBUF option for sockets
        //it will throw an error, as the socket is already closed
serverSocket.setReceiveBufferSize(size);
//getSoTimeout() method returns buffer size
System.out.println("Buffer size: "+serverSocket.getReceiveBufferSize());
    }
}

Output:

Exception in thread "main" java.lang.IllegalArgumentException: negative receive size
	at java.net.ServerSocket.setReceiveBufferSize(ServerSocket.java:845)
	at com.javaTpoint.JavaServerSocketSetReceiveBufferSizeExample3.main(JavaServerSocketSetReceiveBufferSizeExample3.java:14)

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