Sample code for 30+ languages & platforms
Java

TCP Socket Connect through HTTP Proxy

See more Socket/SSL/TLS Examples

Demonstrates how to connect through an HTTP proxy server.

Chilkat Java Downloads

Chilkat2 Java
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Socket;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Socket socket = new Socket();

        // To connect through an HTTP proxy, set the HttpProxyHostname
        // and HttpProxyPort properties to the hostname (or IP address)
        // and port of the HTTP proxy.  Typical port numbers used by
        // HTTP proxy servers are 3128 and 8080.
        socket.setHttpProxyHostname("www.my-http-proxy.com");
        socket.setHttpProxyPort(3128);

        // Important:  Your HTTP proxy server must allow non-HTTP
        // traffic to pass.  Otherwise this does not work.

        // Connect (via the HTTP proxy) to port 5555 of 192.168.1.108.
        // hostname may be a domain name or IP address.
        String hostname = "192.168.1.108";
        boolean ssl = false;
        int maxWaitMillisec = 20000;
        String receivedMsg;
        try {
            socket.connect(hostname, 5555, ssl, maxWaitMillisec);

            // Set maximum timeouts for reading an writing (in millisec)
            socket.setMaxReadIdleMs(10000);
            socket.setMaxSendIdleMs(10000);

            // The ficticious server (in this example) is going to send a "Hello World!"
            // message.  Read it:
            receivedMsg = socket.receiveString();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Close the connection with the server
        // Wait a max of 20 seconds (20000 millsec)
        socket.closeConnection(20000);

        System.out.println(receivedMsg);
    }
}