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Support IPv6 in BN and VC HTTP APIs (#3104)

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## Issue Addressed

#3103

## Proposed Changes

Parse `http-address` and `metrics-address` as `IpAddr` for both the beacon node and validator client to support IPv6 addresses.
Also adjusts parsing of CORS origins to allow for IPv6 addresses.

## Usage
You can now set  `http-address` and/or `metrics-address`  flags to IPv6 addresses.
For example, the following:
`lighthouse bn --http --http-address :: --metrics --metrics-address ::1`
will expose the beacon node HTTP server on `[::]` (equivalent of `0.0.0.0` in IPv4) and the metrics HTTP server on `localhost` (the equivalent of `127.0.0.1` in IPv4) 

The beacon node API can then be accessed by:
`curl "http://[server-ipv6-address]:5052/eth/v1/some_endpoint"`

And the metrics server api can be accessed by:
`curl "http://localhost:5054/metrics"` or by `curl "http://[::1]:5054/metrics"`

## Additional Info
On most Linux distributions the `v6only` flag is set to `false` by default (see the section for the `IPV6_V6ONLY` flag in https://www.man7.org/linux/man-pages/man7/ipv6.7.html) which means IPv4 connections will continue to function on a IPv6 address (providing it is appropriately mapped). This means that even if the Lighthouse API is running on `::` it is also possible to accept IPv4 connections.

However on Windows, this is not the case. The `v6only` flag is set to `true` so binding to `::` will only allow IPv6 connections.
This commit is contained in:
Mac L
2022-03-24 00:04:49 +00:00
parent 3c675a9dfc
commit 41b5af9b16
12 changed files with 82 additions and 42 deletions
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8
validator_client/src/http_api/mod.rs
View File

@@ -16,7 +16,7 @@ use slog::{crit, info, warn, Logger};
use slot_clock::SlotClock;
use std::future::Future;
use std::marker::PhantomData;
use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4};
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
use std::path::PathBuf;
use std::sync::{Arc, Weak};
use tokio::runtime::Runtime;
@@ -69,7 +69,7 @@ pub struct Context<T: SlotClock, E: EthSpec> {
#[derive(PartialEq, Debug, Clone, Serialize, Deserialize)]
pub struct Config {
pub enabled: bool,
pub listen_addr: Ipv4Addr,
pub listen_addr: IpAddr,
pub listen_port: u16,
pub allow_origin: Option<String>,
}
@@ -78,7 +78,7 @@ impl Default for Config {
fn default() -> Self {
Self {
enabled: false,
listen_addr: Ipv4Addr::new(127, 0, 0, 1),
listen_addr: IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
listen_port: 5062,
allow_origin: None,
}
@@ -609,7 +609,7 @@ pub fn serve<T: 'static + SlotClock + Clone, E: EthSpec>(
.with(cors_builder.build());
let (listening_socket, server) = warp::serve(routes).try_bind_with_graceful_shutdown(
SocketAddrV4::new(config.listen_addr, config.listen_port),
SocketAddr::new(config.listen_addr, config.listen_port),
async {
shutdown.await;
},