lnd v0.8.2-beta

This release marks the second minor release in the `v0.8.x` series and contains no major new features. This release includes a number of fixes for SCB (Static Channel Backup) recovery, additional logging in the `ChainNotifier`, and a consistency fix to the `SendToRoute` RPC call. # Verifying the Release In order to verify the release, you'll need to have `gpg` or `gpg2` installed on your system. Once you've obtained a copy (and hopefully verified that as well), you'll first need to import the keys that have signed this release if you haven't done so already: ``` curl https://keybase.io/roasbeef/pgp_keys.asc | gpg --import ``` Once you have the required PGP keys, you can verify the release (assuming `manifest-v0.8.2-beta.txt` and `manifest-v0.8.2-beta.txt.sig` are in the current directory) with: ``` gpg --verify manifest-v0.8.2-beta.txt.sig ``` You should see the following if the verification was successful: ``` gpg: assuming signed data in 'manifest-v0.8.2-beta.txt' gpg: Signature made Wed Dec 11 17:18:41 2019 PST gpg: using RSA key 4AB7F8DA6FAEBB3B70B1F903BC13F65E2DC84465 gpg: Good signature from "Olaoluwa Osuntokun " [ultimate] ``` That will verify the signature of the manifest file, which ensures integrity and authenticity of the archive you've downloaded locally containing the binaries. Next, depending on your operating system, you should then re-compute the `sha256` hash of the archive with `shasum -a 256 `, compare it with the corresponding one in the manifest file, and ensure they match *exactly*. ## Verifying the Release Binaries As of this release, our release binaries are **fully reproducible** thanks to `go1.13`! Third parties are now able to verify that the release binaries were produced properly without having to trust the release manager(s). See our [reproducible builds guide](https://github.com/lightningnetwork/lnd/tree/master/build/release) for how this can be achieved. The release binaries are compiled with `go1.13.4`, which is required by verifiers to arrive at the same ones. They include the following build tags: `autopilotrpc`, `signrpc`, `walletrpc`, `chainrpc`, `invoicesrpc`, `routerrpc`, and `watchtowerrpc`. Note that these are already included in the release script, so they do not need to be provided. Finally, you can also verify the _tag_ itself with the following command: ``` git verify-tag v0.8.2-beta ``` # Building the Contained Release Users are able to rebuild the target release themselves without having to fetch any of the dependencies. In order to do so, assuming that `vendor.tar.gz` and `lnd-source-v0.8.2-beta.tar.gz` are in the current directory, follow these steps: ``` tar -xvzf vendor.tar.gz tar -xvzf lnd-source-v0.8.2-beta.tar.gz GO111MODULE=on go install -v -mod=vendor -ldflags "-X github.com/lightningnetwork/lnd/build.Commit=v0.8.2-beta" ./cmd/lnd GO111MODULE=on go install -v -mod=vendor -ldflags "-X github.com/lightningnetwork/lnd/build.Commit=v0.8.2-beta" ./cmd/lncli ``` The `-mod=vendor` flag tells the `go build` command that it doesn't need to fetch the dependencies, and instead, they're all enclosed in the local vendor directory. Additionally, it's now possible to use the [enclosed `release.sh` script to bundle a release for a _specific_ system like so](https://github.com/lightningnetwork/lnd/pull/2191): ``` LNDBUILDSYS="linux-arm64 darwin-amd64" ./build/release/release.sh ``` ⚡️⚡️⚡️ OK, now to the rest of the release notes! ⚡️⚡️⚡️ # Release Notes [It's now possible to use an SCB to recover the funds of an unconfirmed channel](https://github.com/lightningnetwork/lnd/pull/3719). Before this fix, if one attempted to recover an SCB for a channel which was unconfirmed at . the time of SCB creation, then the process would fail. We'll node encode a special short channel ID to detect this case to ensure the channel funds can be recovered as normal. [We'll now warn a user that is using the `lncli unlock` or `lncli create` calls to recover an SCB](https://github.com/lightningnetwork/lnd/pull/3698). The new warning message now makes it more clear that in order to recover the funds of the channel, we need to close the channel on chain, resulting in additional chain fees. [If some or all of the channels in a `Multi` SCB backup have already been received, then we'll no longer exit early](https://github.com/lightningnetwork/lnd/pull/3737). Instead, this case will be detected allowing a user to re-issue an SCB recovery CLI or RPC command. [The `SendToRoute` RPC call has been updated to properly check the current max payment size parameter](https://github.com/lightningnetwork/lnd/pull/3790) of the registered router backend, just as all the other payment RPC calls do. ## Changelog The full list of changes since `v0.8.1-beta` can be found here: * https://github.com/lightningnetwork/lnd/compare/v0.8.1-beta...v0.8.2-beta # Contributors (Alphabetical Order) Andreas M. Antonopoulos Johan T. Halseth Olaoluwa Osuntokun Oliver Gugger