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lightning-listchannels -- Command to query active lightning channels in the entire network
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==========================================================================================
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SYNOPSIS
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--------
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**listchannels** \[*short\_channel\_id*\] \[*source*\]
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DESCRIPTION
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-----------
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The **listchannels** RPC command returns data on channels that are known
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to the node. Because channels may be bidirectional, up to 2 objects will
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be returned for each channel (one for each direction).
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If *short\_channel\_id* is a short channel id, then only known channels with a
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matching *short\_channel\_id* are returned. Otherwise, it must be null.
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If *source* is a node id, then only channels leading from that node id
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are returned.
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If neither is supplied, data on all lightning channels known to this
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node, are returned. These can be local channels or public channels
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broadcast on the gossip network.
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RETURN VALUE
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------------
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On success, an object with a "channels" key is returned containing a
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list of 0 or more objects.
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Each object in the list contains the following data:
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- *source* : The node providing entry to the channel, specifying the
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fees charged for using the channel in that direction.
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- *destination* : The node providing the exit point for the channel.
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- *short\_channel\_id* : The channel identifier.
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- *public* : Boolean value, is publicly available. Non-local channels
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will only ever have this value set to true. Local channels are
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side-loaded by this node, rather than obtained through the gossip
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network, and so may have this value set to false.
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- *satoshis* : Funds available in the channel.
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- *amount\_sat* : Same as above, but ending in *sat*.
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- *message\_flags* : Bitfield showing the presence of optional fields
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in the *channel\_update* message (BOLT \#7).
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- *channel\_flags* : Bitfields indicating the direction of the channel
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and signaling various options concerning the channel. (BOLT \#7).
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- *active* : Boolean value, is available for routing. This is linked
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to the channel flags data, where if the second bit is set, signals a
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channels temporary unavailability (due to loss of connectivity) OR
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permanent unavailability where the channel has been closed but not
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settlement on-chain.
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- *last\_update* : Unix timestamp (seconds) showing when the last
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channel\_update message was received.
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- *base\_fee\_millisatoshi* : The base fee (in millisatoshi) charged
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for the HTLC (BOLT \#7; equivalent to `fee_base_msat`).
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- *fee\_per\_millionth* : The amount (in millionths of a satoshi)
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charged per transferred satoshi (BOLT \#7; equivalent to
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`fee_proportional_millionths`).
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- *delay* : The number of blocks of additional delay required when
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forwarding an HTLC in this direction. (BOLT \#7; equivalent to
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`cltv_expiry_delta`).
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- *htlc\_minimum\_msat* : The minimum payment which can be sent
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through this channel.
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- *htlc\_maximum\_msat* : The maximum payment which can be sent
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through this channel.
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If *short\_channel\_id* or *source* is supplied and no matching channels
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are found, a "channels" object with an empty list is returned.
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On error the returned object will contain `code` and `message` properties,
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with `code` being one of the following:
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- -32602: If the given parameters are wrong.
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AUTHOR
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------
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Michael Hawkins <<michael.hawkins@protonmail.com>>.
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SEE ALSO
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--------
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lightning-fundchannel(7), lightning-listnodes(7)
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RESOURCES
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---------
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Main web site: <https://github.com/ElementsProject/lightning>
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Lightning RFC site
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- BOLT \#7:
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<https://github.com/lightningnetwork/lightning-rfc/blob/master/07-routing-gossip.md>
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