Dart

TCP Socket Connect through HTTP Proxy

See more Socket/SSL/TLS Examples

Demonstrates how to connect through an HTTP proxy server. Dart

import 'package:chilkat/chilkat.dart';

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

  final socket = 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.httpProxyHostname = 'www.my-http-proxy.com';
  socket.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.
  final hostname = '192.168.1.108';
  final ssl = false;
  final maxWaitMillisec = 20000;
  try {
    socket.connect(hostname, 5555, ssl, maxWaitMillisec);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Set maximum timeouts for reading an writing (in millisec)
  socket.maxReadIdleMs = 10000;
  socket.maxSendIdleMs = 10000;

  // The ficticious server (in this example) is going to send a "Hello World!" 
  // message.  Read it:
  final String receivedMsg;
  try {
    receivedMsg = socket.receiveString();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

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

  print(receivedMsg);
}