From 4f0ad25fabdda0b4a1f659d55acf3bd1e6abd5a1 Mon Sep 17 00:00:00 2001
From: Beno!t POLASZEK <bpolaszek@gmail.com>
Date: Tue, 4 Jun 2019 15:59:49 +0200
Subject: [PATCH] Set default crypto method - Fix #31105

---
 .../Component/Mailer/Transport/Smtp/Stream/SocketStream.php    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Symfony/Component/Mailer/Transport/Smtp/Stream/SocketStream.php b/src/Symfony/Component/Mailer/Transport/Smtp/Stream/SocketStream.php
index 07692b11ba..308201d538 100644
--- a/src/Symfony/Component/Mailer/Transport/Smtp/Stream/SocketStream.php
+++ b/src/Symfony/Component/Mailer/Transport/Smtp/Stream/SocketStream.php
@@ -140,6 +140,9 @@ final class SocketStream extends AbstractStream
         if ($this->streamContextOptions) {
             $options = array_merge($options, $this->streamContextOptions);
         }
+        if ($this->isTLS()) {
+            $options['ssl']['crypto_method'] = $options['ssl']['crypto_method'] ?? STREAM_CRYPTO_METHOD_TLS_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+        }
         $streamContext = stream_context_create($options);
         $this->stream = @stream_socket_client($this->url, $errno, $errstr, $this->timeout, STREAM_CLIENT_CONNECT, $streamContext);
         if (false === $this->stream) {