Limit bodyless header workaround to netstandard

stephentoub · Copilot · stephentoub · commit b453df464291 · 2026-07-09T18:09:15.000-07:00
Co-authored-by: Copilot App &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/dotnet/src/CopilotRequestHandler.cs b/dotnet/src/CopilotRequestHandler.cs
@@ -536,8 +536,14 @@ private static async Task<HttpRequestMessage> BuildHttpRequestAsync(LlmInference
                 continue;
             }
 
-            if (!message.Headers.TryAddWithoutValidation(name, values) && hasBody)
+            if (!message.Headers.TryAddWithoutValidation(name, values))
             {
+#if NETSTANDARD2_0
+                if (!hasBody)
+                {
+                    continue;
+                }
+#endif
                 message.Content ??= new ByteArrayContent([]);
                 message.Content.Headers.TryAddWithoutValidation(name, values);
             }

Original file line number	Diff line number	Diff line change
`@@ -536,8 +536,14 @@ private static async Task<HttpRequestMessage> BuildHttpRequestAsync(LlmInference`
`536`	`536`	`continue;`
`537`	`537`	`}`
`538`	`538`
`539`		`- if (!message.Headers.TryAddWithoutValidation(name, values) && hasBody)`
	`539`	`+ if (!message.Headers.TryAddWithoutValidation(name, values))`
`540`	`540`	`{`
	`541`	`+#if NETSTANDARD2_0`
	`542`	`+ if (!hasBody)`
	`543`	`+ {`
	`544`	`+ continue;`
	`545`	`+ }`
	`546`	`+#endif`
`541`	`547`	`message.Content ??= new ByteArrayContent([]);`
`542`	`548`	`message.Content.Headers.TryAddWithoutValidation(name, values);`
`543`	`549`	`}`