From ea7f1dd811adc5361b046d225a6d4c7a31f30b8d Mon Sep 17 00:00:00 2001
From: Alex <aik099@users.noreply.github.com>
Date: Thu, 9 Jan 2025 12:31:58 +0200
Subject: [PATCH] Use HTTP 1.1 protocol in ClientInterface implementing classes

---
 CHANGELOG.md                       | 3 ++-
 src/Jira/Api/Client/CurlClient.php | 1 +
 src/Jira/Api/Client/PHPClient.php  | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d45588d..1949280 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,7 +13,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ...
 
 ### Fixed
-...
+- The `CurlClient` in combination with cURL version < 7.33.0 was getting `426 Upgrade Required` error on any request to the Atlassian Cloud servers by [@aik099] (#239).
+- The `PHPClient` on PHP < 8.0 was getting `426 Upgrade Required` error on any request to the Atlassian Cloud servers by [@aik099] (#239).
 
 ## [2.0.0-B1] - 2025-01-04
 ### Added
diff --git a/src/Jira/Api/Client/CurlClient.php b/src/Jira/Api/Client/CurlClient.php
index 2db41e6..8cfe505 100644
--- a/src/Jira/Api/Client/CurlClient.php
+++ b/src/Jira/Api/Client/CurlClient.php
@@ -93,6 +93,7 @@ public function sendRequest(
 			curl_setopt($curl, CURLOPT_USERPWD, sprintf('%s:%s', $credential->getId(), $credential->getPassword()));
 		}
 
+		curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
 		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
 		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
 		curl_setopt($curl, CURLOPT_VERBOSE, $debug);
diff --git a/src/Jira/Api/Client/PHPClient.php b/src/Jira/Api/Client/PHPClient.php
index ea7c174..3124b8b 100644
--- a/src/Jira/Api/Client/PHPClient.php
+++ b/src/Jira/Api/Client/PHPClient.php
@@ -123,6 +123,7 @@ public function sendRequest(
 				'method' => $method,
 				'header' => implode("\r\n", $header),
 				'ignore_errors' => true,
+				'protocol_version' => 1.1, // Not needed since PHP 8.0.
 			),
 		);