Wait for a Socket to Become Readable

See more Socket/SSL/TLS Examples

Demonstrates Socket.SelectForReading, which waits for read-ready activity on the socket, or on any contained socket when the object is a socket set. It returns 1 if ready, 0 on timeout, or -1 on error.

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

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

  // Connect to the server using TLS.
  const bTls = true;
  const maxWaitMs = 5000;
  try {
    await socket.connectAsync('example.com', 5000, bTls, maxWaitMs);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  // Wait up to 5 seconds for read-ready activity on the socket (or, for a socket set, on any contained
  // socket).  Returns 1 if ready, 0 on timeout, or -1 on error.
  const ready = await socket.selectForReadingAsync(5000);
  if (ready < 0) {
    console.log(socket.lastErrorText);
    return;
  }

  if (ready !== 1) {
    console.log('No data became available before the timeout.');
    return;
  }

  console.log('The socket has data ready to read.');
}