void (*success)(void *req_closure, struct json_object *obj, const char *info);
void (*fail)(void *req_closure, const char *status, const char *info);
const char *(*raw)(void *req_closure, size_t *size);
void (*success)(void *req_closure, struct json_object *obj, const char *info);
void (*fail)(void *req_closure, const char *status, const char *info);
const char *(*raw)(void *req_closure, size_t *size);
void *(*context_get)(void *ctx_closure);
void (*context_set)(void *ctx_closure, void *context, void (*free_context)(void*));
int (*session_create)(void *req_closure);
void *(*context_get)(void *ctx_closure);
void (*context_set)(void *ctx_closure, void *context, void (*free_context)(void*));
int (*session_create)(void *req_closure);