lightning-connect – Command for connecting to another lightning node


connect id [host port]


The connect RPC command establishes a new connection with another node in the Lightning Network.

id represents the target node’s public key. As a convenience, id may be of the form id@host or id@host:port. In this case, the host and port parameters must be omitted.

host is the peer’s hostname or IP address.

If not specified, the port defaults to 9735.

If host is not specified (or doesn’t work), the connection will be attempted to an IP belonging to id obtained through gossip with other already connected peers. This can fail if your C-lightning node is a fresh install that has not connected to any peers yet (your node has no gossip yet), or if the target id is a fresh install that has no channels yet (nobody will gossip about a node until it has one published channel).

If host begins with a / it is interpreted as a local path, and the connection will be made to that local socket (see bind-addr in lightningd-config(5)).

Connecting to a node is just the first step in opening a channel with another node. Once the peer is connected a channel can be opened with lightning-fundchannel(7).


On success the peer id is returned, as well as a hexidecimal features bitmap, a direction (”in” if they connected to us, “out” if we connected to them”) and an address object as per lightning-listnodes(7). Note that address will be less useful if “direction” is “in”, especially if a proxy is in use.


On failure, one of the following errors will be returned:

{ "code" : 400, "message" : "Unable to connect, no address known for peer" }

If some addresses are known but connecting to all of them failed, the message will contain details about the failures:

{ "code" : 401, "message" : "..." }

If the given parameters are wrong:

{ "code" : -32602, "message" : "..." }


Rusty Russell <> is mainly responsible. Felix <> is the original author of this manpage.


lightning-fundchannel(7), lightning-listpeers(7), lightning-listchannels(7), lightning-disconnect(7)


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