From 7a5f4c0564e8bbf191d0323a8dc20c09c9f3f3bb Mon Sep 17 00:00:00 2001
From: cynfo3000 <cynfo3000@cynfo.net>
Date: Tue, 10 Mar 2026 02:42:34 +0100
Subject: [PATCH] =?UTF-8?q?fix:=20WS-Client=20Ping-Loop=20(30s)=20?=
 =?UTF-8?q?=E2=80=94=20Verbindung=20bricht=20nicht=20mehr=20nach=2070s=20a?=
 =?UTF-8?q?b?=
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---
 agent-windows/ws/client.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/agent-windows/ws/client.go b/agent-windows/ws/client.go
index b0ce82c..a316249 100644
--- a/agent-windows/ws/client.go
+++ b/agent-windows/ws/client.go
@@ -95,6 +95,26 @@ func (c *Client) connect(stop <-chan struct{}) error {
 	})
 
 	done := make(chan struct{})
+
+	// Ping-Loop: alle 30s einen Ping senden um Verbindung am Leben zu halten
+	go func() {
+		ticker := time.NewTicker(30 * time.Second)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ticker.C:
+				conn.SetWriteDeadline(time.Now().Add(10 * time.Second))
+				if err := conn.WriteMessage(websocket.PingMessage, nil); err != nil {
+					return
+				}
+			case <-done:
+				return
+			case <-stop:
+				return
+			}
+		}
+	}()
+
 	go func() {
 		defer close(done)
 		for {
@@ -106,6 +126,7 @@ func (c *Client) connect(stop <-chan struct{}) error {
 				return
 			}
 			if resp := c.handler.Handle(msg); resp != nil {
+				conn.SetWriteDeadline(time.Now().Add(10 * time.Second))
 				conn.WriteMessage(websocket.TextMessage, resp)
 			}
 		}