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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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10
validator_client/src/config.rs
View File

@@ -12,7 +12,7 @@ use sensitive_url::SensitiveUrl;
use serde_derive::{Deserialize, Serialize};
use slog::{info, warn, Logger};
use std::fs;
use std::net::Ipv4Addr;
use std::net::IpAddr;
use std::path::PathBuf;
use types::{Address, GRAFFITI_BYTES_LEN};
@@ -238,8 +238,8 @@ impl Config {
if let Some(address) = cli_args.value_of("http-address") {
if cli_args.is_present("unencrypted-http-transport") {
config.http_api.listen_addr = address
.parse::<Ipv4Addr>()
.map_err(|_| "http-address is not a valid IPv4 address.")?;
.parse::<IpAddr>()
.map_err(|_| "http-address is not a valid IP address.")?;
} else {
return Err(
"While using `--http-address`, you must also use `--unencrypted-http-transport`."
@@ -273,8 +273,8 @@ impl Config {
if let Some(address) = cli_args.value_of("metrics-address") {
config.http_metrics.listen_addr = address
.parse::<Ipv4Addr>()
.map_err(|_| "metrics-address is not a valid IPv4 address.")?;
.parse::<IpAddr>()
.map_err(|_| "metrics-address is not a valid IP address.")?;
}
if let Some(port) = cli_args.value_of("metrics-port") {