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vendor/clue/http-proxy-react/examples/12-proxy-smtps.php

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+<?php
+
+// A simple example which uses a secure SMTP connection to Googlemail through a HTTP CONNECT proxy.
+// Proxy can be given as first argument and defaults to localhost:8080 otherwise.
+// This example highlights how changing from plain connections (see previous
+// example) to using a secure connection actually adds very little complexity
+// and does not mess with your actual network protocol otherwise.
+// Please note that MANY public proxies do not allow SMTP connections, YMMV.
+
+use Clue\React\HttpProxy\ProxyConnector;
+use React\Socket\Connector;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$url = isset($argv[1]) ? $argv[1] : '127.0.0.1:8080';
+
+$loop = React\EventLoop\Factory::create();
+
+$proxy = new ProxyConnector($url, new Connector($loop));
+$connector = new Connector($loop, array(
+    'tcp' => $proxy,
+    'timeout' => 3.0,
+    'dns' => false
+));
+
+$connector->connect('tls://smtp.googlemail.com:465')->then(function (ConnectionInterface $stream) {
+    $stream->write("EHLO local\r\n");
+    $stream->on('data', function ($chunk) use ($stream) {
+        echo $chunk;
+        $stream->write("QUIT\r\n");
+    });
+}, 'printf');
+
+$loop->run();