uint64_t stream_id; /* Stream ID known by the relayd */
uint64_t net_seq_num; /* Network sequence number, per stream. */
uint32_t data_size; /* data size following this header */
uint64_t stream_id; /* Stream ID known by the relayd */
uint64_t net_seq_num; /* Network sequence number, per stream. */
uint32_t data_size; /* data size following this header */