From 018caa47020d53c4d59d0e8c0c8570074556ea68 Mon Sep 17 00:00:00 2001
From: Jacques ROUSSEL <jacques.roussel@rouaje.com>
Date: Tue, 3 Oct 2023 08:02:05 +0200
Subject: [PATCH] Fix Content-Length for POST when data empty

Signed-off-by: Jacques ROUSSEL <jacques.roussel@rouaje.com>
---
 src/Client.php      |  6 ++++++
 test/ClientTest.php | 20 ++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/src/Client.php b/src/Client.php
index 2d144102..1525e836 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -1256,6 +1256,12 @@ protected function prepareHeaders($body, $uri)
                 $headers['Content-Length'] = strlen($body);
             }
         }
+        else {
+            if ($this->getMethod() == 'POST') {
+                $headers['Content-Length'] = 0;
+            }
+        }
+
 
         // Merge the headers of the request (if any)
         // here we need right 'http field' and not lowercase letters
diff --git a/test/ClientTest.php b/test/ClientTest.php
index 21dd8770..4ec2a0a2 100644
--- a/test/ClientTest.php
+++ b/test/ClientTest.php
@@ -505,6 +505,26 @@ public function testClientRequestMethod()
         $this->assertSame(Client::ENC_URLENCODED, $client->getEncType());
     }
 
+    public function testClientEmptyPost()
+    {
+        $client                   = new Client();
+        $prepareHeadersReflection = new ReflectionMethod($client, 'prepareHeaders');
+        $prepareHeadersReflection->setAccessible(true);
+
+        $request = new Request();
+        $request->setMethod(Request::METHOD_POST);
+        $client->setRequest($request);
+
+        $this->assertSame($client->getRequest(), $request);
+
+        $headers = $prepareHeadersReflection->invoke($client, '', new Http('http://localhost:5984'));
+
+        $this->assertIsArray($headers);
+	$this->assertArrayHasKey('Content-Length', $headers);
+	$this->assertSame($headers['Content-Length'], 0);
+
+    }
+
     /**
      * @group 7332
      */