int rnet_message_add_u32(struct rnet_message *msg, char *key, uint32_t val);
int rnet_message_add_ascii(struct rnet_message *msg, char *key, char *val);
int rnet_message_add_u32(struct rnet_message *msg, char *key, uint32_t val);
int rnet_message_add_ascii(struct rnet_message *msg, char *key, char *val);