'\" t
.\"     Title: lightning-fundchannel
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 04/08/2019
.\"    Manual: \ \&
.\"    Source: \ \&
.\"  Language: English
.\"
.TH "LIGHTNING\-FUNDCHANN" "7" "04/08/2019" "\ \&" "\ \&"
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.SH "NAME"
lightning-fundchannel \- Command for establishing a lightning channel\&.
.SH "SYNOPSIS"
.sp
\fBfundchannel\fR \fIid\fR \fIsatoshi\fR [\fIfeerate\fR \fIannounce\fR] [\fIminconf\fR]
.SH "DESCRIPTION"
.sp
The \fBfundchannel\fR RPC command opens a payment channel with a peer by committing a funding transaction to the blockchain as defined in BOLT #2\&. \fBfundchannel\fR by itself does not attempt to open a connection\&. A connection must first be established using \fBconnect\fR\&. Once the transaction is confirmed, normal channel operations may begin\&. Readiness is indicated by \fBlistpeers\fR reporting a \fIstate\fR of CHANNELD_NORMAL for the channel\&.
.sp
\fIid\fR is the peer id obtained from \fBconnect\fR\&.
.sp
\fIsatoshi\fR is the amount in satoshis taken from the internal wallet to fund the channel\&. The string \fIall\fR can be used to specify all available funds (or 16777215 satoshi if more is available)\&. Otherwise, it is in satoshi precision; it can be a whole number, a whole number ending in \fIsat\fR, a whole number ending in \fI000msat\fR, or a number with 1 to 8 decimal places ending in \fIbtc\fR\&. The value cannot be less than the dust limit, currently set to 546, nor more than 16777215 satoshi\&.
.sp
\fIfeerate\fR is an optional feerate used for the opening transaction and as initial feerate for commitment and HTLC transactions\&. It can be one of the strings \fIurgent\fR, \fInormal\fR or \fIslow\fR to use lightningd\(cqs internal estimates: \fInormal\fR is the default\&.
.sp
\fIannounce\fR is an optional flag that triggers whether to announce this channel or not\&. Defaults to true\&. An unannounced channel is considered private\&.
.sp
Otherwise, \fIfeerate\fR is a number, with an optional suffix: \fIperkw\fR means the number is interpreted as satoshi\-per\-kilosipa (weight), and \fIperkb\fR means it is interpreted bitcoind\-style as satoshi\-per\-kilobyte\&. Omitting the suffix is equivalent to \fIperkb\fR\&.
.sp
\fIminconf\fR specifies the minimum number of confirmations that used outputs should have\&. Default is 1\&.
.SH "RETURN VALUE"
.sp
On success, the \fItx\fR and \fItxid\fR of the transaction is returned, as well as the \fIchannel_id\fR of the newly created channel\&. On failure, an error is reported and the channel is not funded\&.
.sp
The following error codes may occur:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
\-1\&. Catchall nonspecific error\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
300\&. The maximum allowed funding amount is exceeded\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
301\&. There are not enough funds in the internal wallet (including fees) to create the transaction\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
302\&. The output amount is too small, and would be considered dust\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
303\&. Broadcasting of the funding transaction failed, the internal call to bitcoin\-cli returned with an error\&.
.RE
.sp
Failure may also occur if \fBlightningd\fR and the peer cannot agree on channel parameters (funding limits, channel reserves, fees, etc\&.)\&.
.SH "SEE ALSO"
.sp
lightning\-connect(7), lightning\-listfunds(), lightning\-listpeers(7)
.SH "RESOURCES"
.sp
Main web site: https://github\&.com/ElementsProject/lightning