lightning-ping -- Command to check if a node is up.

SYNOPSIS

ping id [len] [pongbytes]

DESCRIPTION

The ping command checks if the node with id is ready to talk.
It currently only works for peers we have a channel with.

It accepts the following parameters:

id: A string that represents the node id;
len: A integer that represents the length of the ping (default 128);
pongbytes: An integer that represents the length of the reply (default 128).
A value of 65532 to 65535 means "don't reply".

EXAMPLE JSON REQUEST

{
  "id": 82,
  "method": "ping",
  "params": {
    "len": 128,
    "pongbytes": 128
  }
}

RETURN VALUE

On success, an object is returned, containing:

totlen (u16): the answer length of the reply message (including header: 0 means no reply expected)

On failure, one of the following error codes may be returned:

-32602: Error in given parameters or we're already waiting for a ping response from peer.

EXAMPLE JSON RESPONSE

{
   "totlen": 132
}

AUTHOR

Vincenzo Palazzo <[email protected]> wrote the initial version of this man page, but many others did the hard work of actually implementing this rpc command.

RESOURCES

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