Set HTTP 200 with no content as the default config response from the …

…agent

utils/proxy/core.py

@@ -255,19 +255,22 @@ def _modify_response(self, flow):
                 self._add_rc_capabilities_in_info_request(flow)
 
                 if flow.request.path == "/v0.7/config":
+
+                    # mimic the default response from the agent
+                    flow.response.status_code = 200
+                    flow.response.content = b""
+
                     if self.rc_api_command is not None:
                         request_content = json.loads(flow.request.content)
                         runtime_id = request_content["client"]["client_tracer"]["runtime_id"]
 
-                        payload = self.rc_api_command
                         if runtime_id in self.rc_api_runtime_ids_applied:
                             # this runtime id has already been applied
-                            payload = "{}"
+                            return
 
                         logger.info(f"    => modifying rc response for runtime ID {runtime_id}")
 
-                        flow.response.status_code = 200
-                        flow.response.content = payload
+                        flow.response.content = self.rc_api_command
 
                         self.rc_api_runtime_ids_applied.add(runtime_id)
                     elif self.rc_api_sequential_commands is not None:
@@ -285,7 +288,6 @@ def _modify_response(self, flow):
                                 self.rc_api_runtime_ids_request_count[runtime_id]
                             ]
 
-                        flow.response.status_code = 200
                         flow.response.content = json.dumps(response).encode()
 
                         self.rc_api_runtime_ids_request_count[runtime_id] += 1