Java

TCP Socket Connect through HTTP Proxy

See more Socket/SSL/TLS Examples

Demonstrates how to connect through an HTTP proxy server. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSocket socket = new CkSocket();

    // 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.put_HttpProxyHostname("www.my-http-proxy.com");
    socket.put_HttpProxyPort(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;
    success = socket.Connect(hostname,5555,ssl,maxWaitMillisec);
    if (success != true) {
        System.out.println(socket.lastErrorText());
        return;
        }

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

    // The ficticious server (in this example) is going to send a "Hello World!" 
    // message.  Read it:
    String receivedMsg = socket.receiveString();
    if (socket.get_LastMethodSuccess() != true) {
        System.out.println(socket.lastErrorText());
        return;
        }

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

    System.out.println(receivedMsg);
  }
}