lighthouse/beacon_node/http_metrics/Cargo.toml
Mac L a73d698e30 Add TLS capability to the beacon node HTTP API (#2668)
Currently, the beacon node has no ability to serve the HTTP API over TLS.
Adding this functionality would be helpful for certain use cases, such as when you need a validator client to connect to a backup beacon node which is outside your local network, and the use of an SSH tunnel or reverse proxy would be inappropriate.

## Proposed Changes

- Add three new CLI flags to the beacon node
  - `--http-enable-tls`: enables TLS
  - `--http-tls-cert`: to specify the path to the certificate file
  - `--http-tls-key`: to specify the path to the key file
- Update the HTTP API to optionally use `warp`'s [`TlsServer`](https://docs.rs/warp/0.3.1/warp/struct.TlsServer.html) depending on the presence of the `--http-enable-tls` flag
- Update tests and docs
- Use a custom branch for `warp` to ensure proper error handling

## Additional Info

Serving the API over TLS should currently be considered experimental. The reason for this is that it uses code from an [unmerged PR](https://github.com/seanmonstar/warp/pull/717). This commit provides the `try_bind_with_graceful_shutdown` method to `warp`, which is helpful for controlling error flow when the TLS configuration is invalid (cert/key files don't exist, incorrect permissions, etc). 
I've implemented the same code in my [branch here](https://github.com/macladson/warp/tree/tls).

Once the code has been reviewed and merged upstream into `warp`, we can remove the dependency on my branch and the feature can be considered more stable.

Currently, the private key file must not be password-protected in order to be read into Lighthouse.
2021-10-12 03:35:49 +00:00

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TOML

[package]
name = "http_metrics"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
warp = { git = "https://github.com/macladson/warp", rev ="dfa259e" }
serde = { version = "1.0.116", features = ["derive"] }
slog = "2.5.2"
beacon_chain = { path = "../beacon_chain" }
store = { path = "../store" }
eth2_libp2p = { path = "../eth2_libp2p" }
slot_clock = { path = "../../common/slot_clock" }
lighthouse_metrics = { path = "../../common/lighthouse_metrics" }
lighthouse_version = { path = "../../common/lighthouse_version" }
warp_utils = { path = "../../common/warp_utils" }
malloc_utils = { path = "../../common/malloc_utils" }
[dev-dependencies]
tokio = { version = "1.10.0", features = ["sync"] }
reqwest = { version = "0.11.0", features = ["json"] }
environment = { path = "../../lighthouse/environment" }
types = { path = "../../consensus/types" }