Only parse requests and responses as msgpack if they were not JSON

mitmproxy2swagger/mitmproxy2swagger.py

@@ -242,7 +242,8 @@ def main(override_args: Optional[Sequence[str]] = None):
                     except json.decoder.JSONDecodeError:
                         pass
 
-                    # try to parse the body as msgpack
+                    # try to parse the body as msgpack, if it's not json
+                    if body_val is None:
                         try:
                             body_val = msgpack.loads(req.get_request_body())
                             content_type = "application/msgpack"
@@ -298,7 +299,8 @@ def main(override_args: Optional[Sequence[str]] = None):
                 except json.decoder.JSONDecodeError:
                     response_parsed = None
 
-                # try parsing the response as msgpack
+                if response_parsed is None:
+                    # try parsing the response as msgpack, if it's not json
                     try:
                         response_parsed = msgpack.loads(response_body)
                         response_content_type = "application/msgpack"