From rusty at rustcorp.com.au  Sun Dec 10 23:15:52 2017
From: rusty at rustcorp.com.au (Rusty Russell)
Date: Mon, 11 Dec 2017 09:45:52 +1030
Subject: [Lightning-dev] Directionality of the transaction fees
In-Reply-To: <c1ace724-e974-4e1b-8465-28699730c4e1@gmail.com>
References: <CABDf0nxkqszOn8t8017tR3Q0ZRxAHmOer9YsycY8dnvK9mtSdQ@mail.gmail.com>
	<c1ace724-e974-4e1b-8465-28699730c4e1@gmail.com>
Message-ID: <87wp1uxjh3.fsf@rustcorp.com.au>

Johan Tor?s Halseth <johanth at gmail.com> writes:
> Hi, Edward! Welcome to the mailing list :)
> The fees can indeed be set for each direction of the channel, check out https://github.com/lightningnetwork/lightning-rfc/blob/master/07-routing-gossip.md#the-channel_update-message [https://github.com/lightningnetwork/lightning-rfc/blob/master/07-routing-gossip.md#the-channel_update-message]

Indeed; just to confirm, after the initial mutual channel_announce
message, each peer sends its own channel_update; this means you control
your own fees.

In particular, fees are charged on entry to the channel, so if there's
an A->B channel, A charges the fee.  If you traverse B->C, B charges the
fee, etc.

Hope that clarifies,
Rusty.