refactor out chunk framing

Author: kai-ion

src/aws-cpp-sdk-core/source/auth/signer/AWSAuthV4Signer.cpp

@@ -229,15 +229,10 @@ bool AWSAuthV4Signer::SignRequestWithCreds(Aws::Http::HttpRequest& request, cons
         request.DeleteHeader(checksumHeaderValue.c_str());
         request.SetHeaderValue(Http::AWS_TRAILER_HEADER, checksumHeaderValue);
         request.SetTransferEncoding(CHUNKED_VALUE);
-        // Only add aws-chunked if it's not already present to avoid duplication
-        if (request.HasContentEncoding()) {
-            const auto& currentEncoding = request.GetContentEncoding();
-            if (currentEncoding.find(Http::AWS_CHUNKED_VALUE) == Aws::String::npos) {
-                request.SetContentEncoding(Aws::String{Http::AWS_CHUNKED_VALUE} + "," + currentEncoding);
-            }
-        } else {
-            request.SetContentEncoding(Http::AWS_CHUNKED_VALUE);
-        }
+        request.HasContentEncoding()
+                ? request.SetContentEncoding(Aws::String{Http::AWS_CHUNKED_VALUE} + "," + request.GetContentEncoding())
+                : request.SetContentEncoding(Http::AWS_CHUNKED_VALUE);
+
 
         if (request.HasHeader(Http::CONTENT_LENGTH_HEADER)) {
           request.SetHeaderValue(Http::DECODED_CONTENT_LENGTH_HEADER, request.GetHeaderValue(Http::CONTENT_LENGTH_HEADER));

src/aws-cpp-sdk-core/source/http/interceptor/ChunkingInterceptor.cpp

@@ -65,8 +65,10 @@ ChunkingInterceptor::ModifyRequestOutcome ChunkingInterceptor::ModifyBeforeSigni
 
     request->AddContentBody(chunkedBody);
 
-    // Set Transfer-Encoding: chunked for aws-chunked requests
-    request->SetTransferEncoding("chunked");
+    // Set Transfer-Encoding: chunked for aws-chunked requests (only if not already set)
+    if (!request->HasTransferEncoding()) {
+        request->SetTransferEncoding("chunked");
+    }
 
     // Move Content-Length to x-amz-decoded-content-length and remove Content-Length
     if (request->HasHeader("Content-Length")) {