React Native Requires Chilkat v11.0.0+

POP3 using HTTP Proxy

Demonstrates how to communicate with a POP3 server through an HTTP proxy. React Native

import { Email, EmailBundle, MailMan } from '@chilkat/react-native'

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

  // The mailman object is used for receiving (POP3) 
  // and sending (SMTP) email.
  const mailman = new MailMan();

  // To connect through an HTTP proxy, set the HttpProxyHostname
  // and HttpProxyPort properties to the hostname (or IP address)
  // and port of the HTTP proxy.  Typical port numbers used by
  // HTTP proxy servers are 3128 and 8080.
  mailman.httpProxyHostname = 'www.my-http-proxy.com';
  mailman.httpProxyPort = 3128;

  // Important:  Your HTTP proxy server must allow non-HTTP
  // traffic to pass.  Otherwise this does not work.

  // Set the POP3 server's hostname
  mailman.mailHost = 'pop.example.com';

  // Set the POP3 login/password.
  mailman.popUsername = 'myLogin';
  mailman.popPassword = 'myPassword';

  // Copy the all email from the user's POP3 mailbox 
  // into a bundle object.  The email remains on the server.
  // 
  // NOTE: All methods that communicate with a POP3 server
  // will automatically connect and authenticate (i.e. login)
  // if not already connected.  The connection will remain
  // open after the method call returns so that subsequent
  // calls do not need to re-establish the connection.
  // In this case, the connection is established via the HTTP
  // proxy.
  const bundle = new EmailBundle();
  const keepOnServer = true;
  const headersOnly = false;
  // Irrelevent because we are not downloading headers-only
  const numBodyLines = 0;
  try {
    await mailman.fetchAllAsync(keepOnServer, headersOnly, numBodyLines, bundle);
  } catch {
    console.log(mailman.lastErrorText);
    return;
  }

  const email = new Email();
  let i = 0;
  while (i < bundle.messageCount) {
    bundle.emailAt(i, email);

    console.log(`From: ${email.from}`);
    console.log(`Subject: ${email.subject}`);
    i++;
  }

  await mailman.pop3EndSessionAsync();
}