From 5fe8cb9510eea4afdda80806d3b4bb631fde8c9f Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 23 Jun 2026 05:22:03 +0000
Subject: [PATCH 1/2] Bump Microsoft.VisualStudio.Threading.Analyzers from
 17.14.15 to 18.7.23

---
updated-dependencies:
- dependency-name: Microsoft.VisualStudio.Threading.Analyzers
  dependency-version: 18.7.23
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 Directory.Packages.props | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Directory.Packages.props b/Directory.Packages.props
index 4167b7ac..c270b4b3 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -6,7 +6,7 @@
     <ItemGroup>
         <!-- Product dependencies netstandard -->
         <PackageVersion Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.9" />
-        <PackageVersion Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.14.15" />
+        <PackageVersion Include="Microsoft.VisualStudio.Threading.Analyzers" Version="18.7.23" />
         <PackageVersion Include="Microsoft.Extensions.ExtraAnalyzers" Version="8.0.0-rc.2.23510.2" />
         <PackageVersion Include="System.Text.Json" Version="10.0.8" />
         <!-- Product dependencies shared -->

From 9767b11401b5560a87a2300cb88d60698010a3e3 Mon Sep 17 00:00:00 2001
From: "Darrel Miller (from Dev Box)" <darrmi@microsoft.com>
Date: Tue, 18 Aug 2026 09:01:48 -0400
Subject: [PATCH 2/2] fix: suppress VSTHRD103 for JsonSerializer.Serialize to
 string

These calls serialize JSON to a string value (not to a stream), so they
are not blocking I/O. The result is then written asynchronously.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 src/A2A.AspNetCore/A2AHttpProcessor.cs      | 2 ++
 src/A2A.AspNetCore/JsonRpcStreamedResult.cs | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/A2A.AspNetCore/A2AHttpProcessor.cs b/src/A2A.AspNetCore/A2AHttpProcessor.cs
index 34e16973..5074a785 100644
--- a/src/A2A.AspNetCore/A2AHttpProcessor.cs
+++ b/src/A2A.AspNetCore/A2AHttpProcessor.cs
@@ -289,8 +289,10 @@ public async Task ExecuteAsync(HttpContext httpContext)
         {
             await foreach (var taskEvent in _events.WithCancellation(httpContext.RequestAborted))
             {
+                #pragma warning disable VSTHRD103 // Serialize to string is not blocking I/O
                 var json = JsonSerializer.Serialize(taskEvent,
                     A2AJsonUtilities.DefaultOptions.GetTypeInfo(typeof(StreamResponse)));
+                #pragma warning restore VSTHRD103
                 await httpContext.Response.BodyWriter.WriteAsync(
                     Encoding.UTF8.GetBytes($"data: {json}\n\n"), httpContext.RequestAborted);
                 await httpContext.Response.BodyWriter.FlushAsync(httpContext.RequestAborted);
diff --git a/src/A2A.AspNetCore/JsonRpcStreamedResult.cs b/src/A2A.AspNetCore/JsonRpcStreamedResult.cs
index a6a2bc71..49494b99 100644
--- a/src/A2A.AspNetCore/JsonRpcStreamedResult.cs
+++ b/src/A2A.AspNetCore/JsonRpcStreamedResult.cs
@@ -61,7 +61,9 @@ await SseFormatter.WriteAsync(
                     ? JsonRpcResponse.CreateJsonRpcErrorResponse(_requestId, a2aEx)
                     : JsonRpcResponse.InternalErrorResponse(
                         _requestId, "An internal error occurred during streaming.");
+                #pragma warning disable VSTHRD103 // Serialize to string is not blocking I/O
                 var errorJson = JsonSerializer.Serialize(errorResponse, responseTypeInfo);
+                #pragma warning restore VSTHRD103
                 var errorBytes = Encoding.UTF8.GetBytes($"data: {errorJson}\n\n");
                 await httpContext.Response.Body.WriteAsync(errorBytes, httpContext.RequestAborted);
                 await httpContext.Response.Body.FlushAsync(httpContext.RequestAborted);