int after_chunk(void *hook_data, void *call_data);
int before_request(void *hook_data, void *call_data);
int after_request(void *hook_data, void *call_data);
int after_chunk(void *hook_data, void *call_data);
int before_request(void *hook_data, void *call_data);
int after_request(void *hook_data, void *call_data);