React Native

Bind and Listen for Incoming Connections

Demonstrates Socket.BindAndListen, which binds a TCP listener to a port and places it into listening mode, then accepts an incoming connection.

Background. The backlog argument bounds the queue of pending connections. When ClientIpAddress is empty, the listener binds to all interfaces. After listening, call AcceptNext to accept connections.

Chilkat React Native Downloads

Download Chilkat for React Native

React Native

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

async function chilkatExample() {
  const socket = new Socket();

  // Bind a TCP listener to a port and place it into listening mode.  The 2nd argument is the backlog,
  // the maximum number of pending connections allowed to queue.
  try {
    await socket.bindAndListenAsync(5000, 25);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  // After the listener is established, accept the next incoming connection into a new Socket.
  const connectedSock = new Socket();
  try {
    await socket.acceptNextAsync(20000, connectedSock);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  console.log('Accepted a connection.');
}