From d92ac1f892a7f9c00561db6541671f25f3972eed Mon Sep 17 00:00:00 2001
From: Radek Zikmund <32671551+rzikm@users.noreply.github.com>
Date: Tue, 23 Apr 2024 22:14:09 +0200
Subject: [PATCH] Fix
 SocketsHttpHandlerTest_HttpClientHandlerTest_Http3.ReadAsStreamAsync_Cancellation
 data race (#101428)

* Fix SocketsHttpHandlerTest_HttpClientHandlerTest_Http3.ReadAsStreamAsync_Cancellation data race

* Fix build
---
 .../tests/System/Net/Http/HttpClientHandlerTest.cs       | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
index 0ffd0d4ae82ed..7c3d3f385d0bd 100644
--- a/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
+++ b/src/libraries/Common/tests/System/Net/Http/HttpClientHandlerTest.cs
@@ -6,6 +6,9 @@
 using System.Linq;
 using System.Net.Http.Headers;
 using System.Net.Sockets;
+#if !NETFRAMEWORK
+using System.Net.Quic;
+#endif
 using System.Net.Test.Common;
 using System.Security.Authentication;
 using System.Security.Cryptography;
@@ -1396,6 +1399,12 @@ await server.AcceptConnectionAsync(async connection =>
                         await connection.SendResponseAsync(HttpStatusCode.OK, headers: new HttpHeaderData[] { new HttpHeaderData("Transfer-Encoding", "chunked") }, isFinal: false);
                         await connection.SendResponseBodyAsync("1\r\nh\r\n", false);
                     }
+#if !NETFRAMEWORK
+                    catch (QuicException ex) when (ex.ApplicationErrorCode == 0x10c /*H3_REQUEST_CANCELLED*/)
+                    {
+                        // The request was cancelled before we sent the body, ignore
+                    }
+#endif
                     catch (IOException ex)
                     {
                         // when testing in the browser, we are using the WebSocket for the loopback