From 238c0162c0036f767dbf5672f8856def754625a3 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Mon, 18 Oct 2021 12:39:19 +0200
Subject: [PATCH] Add parse_and_resolve_peer_addr

---
 src/util.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/util.rs b/src/util.rs
index 81ee89c..4f6e352 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,4 +1,5 @@
 use std::net::SocketAddr;
+use std::net::ToSocketAddrs;
 
 use serde::Serialize;
 
@@ -72,3 +73,16 @@ pub fn parse_peer_addr(peer: &str) -> Option<(NodeID, SocketAddr)> {
 	let ip = ip[1..].parse::<SocketAddr>().ok()?;
 	Some((pubkey, ip))
 }
+
+/// Parse and resolve a peer's address including public key, written in the format:
+/// `<public key hex>@<ip or hostname>:<port>`
+pub fn parse_and_resolve_peer_addr(peer: &str) -> Option<(NodeID, Vec<SocketAddr>)> {
+	let delim = peer.find('@')?;
+	let (key, host) = peer.split_at(delim);
+	let pubkey = NodeID::from_slice(&hex::decode(&key).ok()?)?;
+	let hosts = host[1..]
+		.to_socket_addrs()
+		.ok()?
+		.collect::<Vec<_>>();
+	Some((pubkey, hosts))
+}