lightning/gossipd/gossipd_peerd_wire.csv

# These must be distinct from WIRE_CHANNEL_ANNOUNCEMENT etc. gossip msgs!
#include <bitcoin/short_channel_id.h>
#include <common/amount.h>

# Channel daemon can ask for updates for a specific channel, for sending
# errors.  
msgtype,gossipd_get_update,3501
msgdata,gossipd_get_update,short_channel_id,short_channel_id,

# If channel isn't known, update will be empty.
msgtype,gossipd_get_update_reply,3601
msgdata,gossipd_get_update_reply,len,u16,
msgdata,gossipd_get_update_reply,update,u8,len

# Send this channel_update.
msgtype,gossipd_local_channel_update,3504
msgdata,gossipd_local_channel_update,short_channel_id,short_channel_id,
msgdata,gossipd_local_channel_update,disable,bool,
msgdata,gossipd_local_channel_update,cltv_expiry_delta,u16,
msgdata,gossipd_local_channel_update,htlc_minimum_msat,amount_msat,
msgdata,gossipd_local_channel_update,fee_base_msat,u32,
msgdata,gossipd_local_channel_update,fee_proportional_millionths,u32,
msgdata,gossipd_local_channel_update,htlc_maximum_msat,amount_msat,

# Update your gossip_store fd: + gossip_store_fd
msgtype,gossipd_new_store_fd,3505
# How much shorter the new store is, so you can offset streaming.
msgdata,gossipd_new_store_fd,offset_shorter,u64,

# Send this channel_announcement
msgtype,gossipd_local_channel_announcement,3506
msgdata,gossipd_local_channel_announcement,len,u16,
msgdata,gossipd_local_channel_announcement,cannount,u8,len