React Native

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. React Native

import { Socket } from '@chilkat/react-native'

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

  const socket = new Socket();

  // 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".
  const ssl = false;
  const maxWaitMillisec = 20000;
  try {
    await socket.connectAsync('localhost', 5555, ssl, maxWaitMillisec);
  } catch {
    console.log(socket.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>
  let receivedMsg: string;
  try {
    receivedMsg = await socket.receiveStringAsync();
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

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

  console.log(receivedMsg);
}