lightning-listchannels -- Command to query active lightning channels in the entire network

SYNOPSIS

listchannels [short_channel_id] [source] [destination]

DESCRIPTION

The listchannels RPC command returns data on channels that are known to the node. Because channels may be bidirectional, up to 2 objects will be returned for each channel (one for each direction).

If short_channel_id is a short channel id, then only known channels with a matching short_channel_id are returned. Otherwise, it must be null.

If source is a node id, then only channels leading from that node id are returned.

If destination is a node id, then only channels leading to that node id are returned.

Only one of short_channel_id, source or destination can be supplied. If nothing is supplied, data on all lightning channels known to this node, are returned. These can be local channels or public channels broadcast on the gossip network.

RETURN VALUE

On success, an object containing channels is returned. It is an array of objects, where each object contains:

source (pubkey): the source node
destination (pubkey): the destination node
short_channel_id (short_channel_id): short channel id of channel
public (boolean): true if this is announced (otherwise it must be our channel)
amount_msat (msat): the total capacity of this channel (always a whole number of satoshis)
message_flags (u8): as defined by BOLT #7
channel_flags (u8): as defined by BOLT #7
active (boolean): true unless source has disabled it, or it's a local channel and the peer is disconnected or it's still opening or closing
last_update (u32): UNIX timestamp on the last channel_update from source
base_fee_millisatoshi (u32): Base fee changed by source to use this channel
fee_per_millionth (u32): Proportional fee changed by source to use this channel, in parts-per-million
delay (u32): The number of blocks delay required by source to use this channel
htlc_minimum_msat (msat): The smallest payment source will allow via this channel
features (hex): BOLT #9 features bitmap for this channel
htlc_maximum_msat (msat, optional): The largest payment source will allow via this channel

If one of short_channel_id, source or destination is supplied and no matching channels are found, a "channels" object with an empty list is returned.

On error the returned object will contain code and message properties, with code being one of the following:

-32602: If the given parameters are wrong.

AUTHOR

Michael Hawkins <michael.hawkins@protonmail.com>.

RESOURCES

Main web site: https://github.com/ElementsProject/lightning

Lightning RFC site

BOLT #7: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md

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