disable hedging for s3 express

Author: TingDaoK

source/s3_auto_ranged_put.c

@@ -464,8 +464,11 @@ static void s_s3_auto_ranged_put_send_request_finish(
     struct aws_http_stream *stream,
     int error_code) {
     struct aws_s3_request *request = connection->request;
-    if (request->request_tag == AWS_S3_AUTO_RANGED_PUT_REQUEST_TAG_PART) {
+    if (request->request_tag == AWS_S3_AUTO_RANGED_PUT_REQUEST_TAG_PART && !request->meta_request->is_express) {
         /* TODO: the single part upload may also be improved from a timeout as multipart. */
+        /* Note: For S3express, server responses random ETag. Killing the connection in the middle may cause server
+         * receive two same part and result in confusing during complete MPU with etag doesn't match.
+         * Disable the first byte timeout for s3 express.  */
         aws_s3_client_update_upload_part_timeout(request->meta_request->client, request, error_code);
     }
     aws_s3_meta_request_send_request_finish_default(connection, stream, error_code);

source/s3_meta_request.c

@@ -1188,7 +1188,10 @@ void aws_s3_meta_request_send_request(struct aws_s3_meta_request *meta_request,
         options.on_metrics = s_s3_meta_request_stream_metrics;
     }
     options.on_complete = s_s3_meta_request_stream_complete;
-    if (request->request_type == AWS_S3_REQUEST_TYPE_UPLOAD_PART) {
+    if (request->request_type == AWS_S3_REQUEST_TYPE_UPLOAD_PART && !meta_request->is_express) {
+        /* Note: For S3express, server responses random ETag. Killing the connection in the middle may cause server
+         * receive two same part and result in confusing during complete MPU with etag doesn't match.
+         * Disable the first byte timeout for s3 express.  */
         options.response_first_byte_timeout_ms = aws_atomic_load_int(&meta_request->client->upload_timeout_ms);
         request->upload_timeout_ms = (size_t)options.response_first_byte_timeout_ms;
     }