Send a String over a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.SendString, which encodes a string using StringCharset and sends the resulting bytes over the connected socket. No delimiter, terminator, or length prefix is added.

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

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

  // Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
  // connection succeeds; the 4th is the maximum time to wait, in milliseconds.
  const bTls = true;
  const maxWaitMs = 5000;
  try {
    await socket.connectAsync('example.com', 5000, bTls, maxWaitMs);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  // StringCharset controls the character encoding used when sending and receiving text.
  socket.stringCharset = 'utf-8';

  // Encode the string using StringCharset and send the resulting bytes.  No delimiter, terminator, or
  // length prefix is added; the exact bytes are sent.  This example sends a command for a simple
  // application-defined text protocol.
  const message = 'STATUS\r\n';
  try {
    await socket.sendStringAsync(message);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  console.log('Message sent.');
}