Allow TLS 1.2, fixes PHPMailer#696

Ultimater · Apr 28, 2016 · 703410e · 703410e
1 parent b04ab34
commit 703410e
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/class.smtp.php b/class.smtp.php
@@ -336,11 +336,22 @@ public function startTLS()
         if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
             return false;
         }
+
+        //Allow the best TLS version(s) we can
+        $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
+
+        //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
+        //so add them back in manually if we can
+        if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+        }
+
         // Begin encrypted connection
         if (!stream_socket_enable_crypto(
             $this->smtp_conn,
             true,
-            STREAM_CRYPTO_METHOD_TLS_CLIENT
+            $crypto_method
         )) {
             return false;
         }