UNIT 1.33.0 Add backlog parameter and accessor methods to Listener

Introduced a `backlog` property to define connection limits in the Listener. Added corresponding getter and setter methods for managing this property. Updated docblocks for improved clarity on Listener parameters.

Author: Pavlusha311245

.github/SECURITY.md

@@ -8,6 +8,7 @@ We use [SemVer](https://semver.org/) for versioning. For the versions available,
 
 | Version | Nginx Unit Capability | Supported          |
 |---------|:----------------------|--------------------|
+| 0.9.x   | 1.33.0                | :white_check_mark: |
 | 0.8.x   | 1.32.1                | :white_check_mark: |
 | < 0.7.x | -                     | :x:                |
 

README.md

@@ -30,6 +30,7 @@ server management into your projects
 
 | Version | Nginx Unit Capability | Supported          |
 |---------|:----------------------|--------------------|
+| 0.9.x   | >= 1.33.0             | :white_check_mark: |
 | 0.8.x   | <= 1.32.1             | :white_check_mark: |
 | < 0.7.x | -                     | :x:                |
 

src/Config/Listener.php

@@ -8,7 +8,6 @@
     Tls
 };
 use Override;
-use UnitPhpSdk\Builders\EndpointBuilder;
 use UnitPhpSdk\Contracts\Arrayable;
 use UnitPhpSdk\Contracts\Jsonable;
 use UnitPhpSdk\Contracts\Uploadable;
@@ -37,10 +36,29 @@ class Listener implements Uploadable, Arrayable, Jsonable
 
     public function __construct(
         private readonly string $listener,
+        /**
+         * Destination to which the listener passes incoming requests
+         * @var string|ListenerPass
+         */
         string|ListenerPass     $pass,
+        /**
+         * Defines SSL/TLS settings.
+         * @var Tls|null
+         */
         private ?Tls            $tls = null,
+        /**
+         * Configures client IP address and protocol replacement.
+         * @var Forwarded|null
+         */
         private ?Forwarded      $forwarded = null,
-    ) {
+        /**
+         * Controls the ‘backlog’ parameter to the listen(2) system-call.
+         * This essentially limits the number of pending connections waiting to be accepted.
+         * @var int
+         */
+        private ?int            $backlog = null
+    )
+    {
         $this->parsePort();
         $this->parsePass($pass);
 
@@ -255,4 +273,14 @@ public function getTarget(): ListenerPass
     {
         return $this->getPass();
     }
+
+    public function getBacklog(): ?int
+    {
+        return $this->backlog;
+    }
+
+    public function setBacklog(?int $backlog): void
+    {
+        $this->backlog = $backlog;
+    }
 }