From 2d2ab4c173de8734bdd8ef4c6bc6c5bf7351428f Mon Sep 17 00:00:00 2001
From: Shane Krueger <shane@acdmail.com>
Date: Mon, 7 Oct 2024 00:57:42 -0400
Subject: [PATCH] GraphQLWs: Ping messages reflect the payload in the pong
 response (#1155)

---
 .../WebSockets/GraphQLWs/SubscriptionServer.cs                | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Transports.AspNetCore/WebSockets/GraphQLWs/SubscriptionServer.cs b/src/Transports.AspNetCore/WebSockets/GraphQLWs/SubscriptionServer.cs
index 3235d16c..70c8e5ec 100644
--- a/src/Transports.AspNetCore/WebSockets/GraphQLWs/SubscriptionServer.cs
+++ b/src/Transports.AspNetCore/WebSockets/GraphQLWs/SubscriptionServer.cs
@@ -123,7 +123,9 @@ public override async Task OnMessageReceivedAsync(OperationMessage message)
     /// Executes when a ping message is received.
     /// </summary>
     protected virtual Task OnPingAsync(OperationMessage message)
-        => Connection.SendMessageAsync(_pongMessage);
+        => message.Payload == null
+        ? Connection.SendMessageAsync(_pongMessage)
+        : Connection.SendMessageAsync(new OperationMessage { Type = MessageType.Pong, Payload = message.Payload });
 
     /// <summary>
     /// Executes when a pong message is received.