Java Socket setSoTimeout() method

The setSoTimeout () method of Java Socket class enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds. The timeout value should be greater than 0 otherwise, it will throw an error.

Syntax

Parameter

The parameter 'timeout' represents a specific timeout in milliseconds.

Return

Throws

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

Example 1

import java.io.IOException;
import java.net.*;
public class JavaSocketSetSoTimeoutExample1  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //integer timeout value
        int timeout=90987789;
        //setSoTimeout() method enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds.
        socket.setSoTimeout(timeout);
        //getSoTimeout() method returns the setting for SO_TIMEOUT option
        System.out.println("Timeout value: "+socket.getSoTimeout());
    }
}

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Output:

Timeout value: 90987789

Example 2

import java.io.IOException;
import java.net.*;
public class JavaSocketSetSoTimeoutExample2  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //integer timeout value
        //the timeout value can be zero
        int timeout=0;
        //setSoTimeout() method enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds.
        socket.setSoTimeout(timeout);
        //getSoTimeout() method returns the setting for SO_TIMEOUT option
        System.out.println("Timeout value: "+socket.getSoTimeout());
    }
}

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Output:

Timeout value: 0

Example 3

import java.io.IOException;
import java.net.*;
public class JavaSocketSetSoTimeoutExample3  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //integer timeout value
        //the timeout value should always be greater than 0, else it will throw an exception
        int timeout=-980;
        //setSoTimeout() method enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds.
        socket.setSoTimeout(timeout);
        //getSoTimeout() method returns the setting for SO_TIMEOUT option
        System.out.println("Timeout value: "+socket.getSoTimeout());
    }
}

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Output:

Exception in thread "main" java.lang.IllegalArgumentException: timeout can't be negative
	at java.net.Socket.setSoTimeout(Socket.java:1139)
	at com.javaTpoint.JavaSocketSetSoTimeoutExample3.main(JavaSocketSetSoTimeoutExample3.java:13)

Example 4

import java.io.IOException;
import java.net.*;
public class JavaSocketSetSoTimeoutExample4  {
    public static void main(String[] args) throws IOException {
        //calling the constructor of the socket class
        Socket socket = new Socket();
        //closing the socket
        socket.close();
        //integer timeout value
        //the timeout value should be greater than 0, else it will throw an exception
        int timeout=980;
        //setSoTimeout() method enables or disables the SO_TIMEOUT option with the given timeout value, in milliseconds.
        //it will throw an error, as the socket is already closed
        socket.setSoTimeout(timeout);
        //getSoTimeout() method returns the setting for SO_TIMEOUT option
        System.out.println("Timeout value: "+socket.getSoTimeout());
    }
}

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Output:

Exception in thread "main" java.net.SocketException: Socket is closed
	at java.net.Socket.setSoTimeout(Socket.java:1137)
	at com.javaTpoint.JavaSocketSetSoTimeoutExample4.main(JavaSocketSetSoTimeoutExample3.java:16)

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