From 0d1ef0aebec58c46700c148f0236f5adfb904247 Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil@daniil.it>
Date: Wed, 7 Oct 2020 17:19:46 +0200
Subject: [PATCH] Allow binding to specific address and port

---
 src/danog/MadelineProto/DataCenter.php        |  2 +-
 .../MadelineProto/Settings/Connection.php     | 29 +++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/danog/MadelineProto/DataCenter.php b/src/danog/MadelineProto/DataCenter.php
index 3d2a6656..39f0010f 100644
--- a/src/danog/MadelineProto/DataCenter.php
+++ b/src/danog/MadelineProto/DataCenter.php
@@ -406,7 +406,7 @@ class DataCenter
             $combos = \array_unique($combos, SORT_REGULAR);
         }
         /* @var $context \Amp\ConnectContext */
-        $context = $context ?? (new ConnectContext())->withMaxAttempts(1)->withConnectTimeout(1000 * $this->settings->getTimeout());
+        $context = $context ?? (new ConnectContext())->withMaxAttempts(1)->withConnectTimeout(1000 * $this->settings->getTimeout())->withBindTo($this->settings->getBindTo());
         foreach ($combos as $combo) {
             foreach ([true, false] as $useDoH) {
                 $ipv6Combos = [
diff --git a/src/danog/MadelineProto/Settings/Connection.php b/src/danog/MadelineProto/Settings/Connection.php
index 8b831512..f0d16722 100644
--- a/src/danog/MadelineProto/Settings/Connection.php
+++ b/src/danog/MadelineProto/Settings/Connection.php
@@ -91,6 +91,11 @@ class Connection extends SettingsAbstract
      */
     protected bool $useDoH = true;
 
+    /**
+     * Bind on specific address and port.
+     */
+    private ?string $bindTo = null;
+
     /**
      * Subdomains of web.telegram.org for https protocol.
      */
@@ -623,4 +628,28 @@ class Connection extends SettingsAbstract
 
         return $this;
     }
+
+    /**
+     * Get bind on specific address and port.
+     *
+     * @return ?string
+     */
+    public function getBindTo(): ?string
+    {
+        return $this->bindTo;
+    }
+
+    /**
+     * Set bind on specific address and port.
+     *
+     * @param ?string $bindTo Bind on specific address and port.
+     *
+     * @return self
+     */
+    public function setBindTo(?string $bindTo): self
+    {
+        $this->bindTo = $bindTo;
+
+        return $this;
+    }
 }