Merge pull request #89 from Tmonster/only_add_content_type_if_not_already_added

Only add Content-Type if not already present in the headers

Author: samansmink

extension/httpfs/httpfs_client.cpp

@@ -92,7 +92,9 @@ class HTTPFSClient : public HTTPClient {
 		req.method = "POST";
 		req.path = info.path;
 		req.headers = TransformHeaders(info.headers, info.params);
-		req.headers.emplace("Content-Type", "application/octet-stream");
+		if (req.headers.find("Content-Type") == req.headers.end()) {
+			req.headers.emplace("Content-Type", "application/octet-stream");
+		}
 		req.content_receiver = [&](const char *data, size_t data_length, uint64_t /*offset*/,
 		                           uint64_t /*total_length*/) {
 			if (state) {