From 2fb696df4ab75819e4a390c5222f95ede39e0f2f Mon Sep 17 00:00:00 2001
From: Ludovic Champenois <ludo@google.com>
Date: Wed, 11 Feb 2026 19:21:25 -0800
Subject: [PATCH] Update DevServer to handle empty POST requests

Set Content-Length to 0 and close output stream after writing.

So that mvn appengine:stop works again (same in Gradle)
---
 .../com/google/cloud/tools/appengine/operations/DevServer.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java b/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
index 2f88fe414..1c74d68bf 100644
--- a/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
+++ b/appengine-plugins-core/src/main/java/com/google/cloud/tools/appengine/operations/DevServer.java
@@ -205,7 +205,8 @@ public void stop(StopConfiguration configuration) throws AppEngineException {
       connection.setDoOutput(true);
       connection.setDoInput(true);
       connection.setRequestMethod("POST");
-      connection.getOutputStream().write('\n');
+      connection.setRequestProperty("Content-Length", "0");
+      connection.getOutputStream().close();
       connection.disconnect();
       int responseCode = connection.getResponseCode();
       if (responseCode < 200 || responseCode > 299) {