In this commit, we modify the AbandonChannel REST endpoint to avoid
conflicting with the CloseChannel's. Otherwise, if a debug build of lnd
is being used, there's no way of closing channels through the REST API
as it's been overwritten by AbandonChannel.
In preparation for the added propagation delay by separating the miner
and the chain backend, we increase several timeouts throughout the test,
and extract them into constants that can easily be altered.
This commit passes the peer's quit signal to the
gossipSyncer when attempt to hand off gossip query
messages. This allows a rate-limited peer's read
handler to break out immediately, which would
otherwise remain stuck until the rate-limited
gossip syncer pulled the message.
This commit restructures the delivery of gossip
query related messages, such that they are delivered
directly to the gossip syncers. Gossip query rate
limiting was introduced in #1824 on a per-peer basis.
However, since all gossip query messages were being
delivered in the main event loop, the end result is
that one rate-limited peer could stall all other
peers.
In addition, since no other peers would be able to
submit gossip-related messages through the blocked
event loop, the back pressure would eventually rate
limit the read handlers of all peers as well.
The end result would be lengthy delays in reading
messages related to htlc forwarding.
The fix is to lift the delivery of gossip query
messages outside of the main event loop. With
this change, the rate limiting backpressure is
delivered only to the intended peer.
By passing a pubkey into SendToRoute, it becomes unnecessary for lnd to
query the channel graph to retrieve the hop pubkey. This allows routes
over private channels that are not present in the graph.
This commit modifies the blob encryption scheme to
use chacha20-poly1305 with a randomized 192-bit nonce.
The previous approach used a deterministic nonce scheme,
which is being replaced to simplify the requirements of
a correct implementation. As a result, each payload
gains an addtional 24-bytes prepended to the ciphertext.
