Dart

TCP/IP Socket Connect to Remote Host:Port

See more Socket/SSL/TLS Examples

Demonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message. 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();

  // Connect to port 5555 of localhost.
  // The string "localhost" is for testing on a single computer.
  // It would typically be replaced with an IP hostname, such
  // as "www.chilkatsoft.com".
  final ssl = false;
  final maxWaitMillisec = 20000;
  try {
    socket.connect('localhost', 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;

  // Pretend, for the sake of the example, that the
  // ficticious server is going to send a "Hello World!" 
  // after accepting the connection.  
  // Note: Technically, the ReceiveString may not receive the
  // complete string, although it's highly probable given the short
  // length of the "Hello World!" message. 
  // See this Chilkat blog post for more information:
  // <a href="http://www.cknotes.com/?p=302">http://www.cknotes.com/?p=302</a>
  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);
}