From 890dcca270cdd066279c4a415ab86d97b421f14a Mon Sep 17 00:00:00 2001
From: Markus Linnala <markus.linnala@gmail.com>
Date: Sun, 20 Oct 2019 22:30:16 +0300
Subject: [PATCH] fix: xtransport: Ensure we strip [] from host/ip before
 net.ParseIP

---
 dnscrypt-proxy/xtransport.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dnscrypt-proxy/xtransport.go b/dnscrypt-proxy/xtransport.go
index d3b9efd7..569a89d0 100644
--- a/dnscrypt-proxy/xtransport.go
+++ b/dnscrypt-proxy/xtransport.go
@@ -68,6 +68,10 @@ func NewXTransport() *XTransport {
 	return &xTransport
 }
 
+func ParseIP(ipStr string) net.IP {
+	return net.ParseIP(strings.TrimRight(strings.TrimLeft(ipStr, "["), "]"))
+}
+
 func (xTransport *XTransport) clearCache() {
 	xTransport.cachedIPs.Lock()
 	xTransport.cachedIPs.cache = make(map[string]string)
@@ -232,7 +236,7 @@ func (xTransport *XTransport) Fetch(method string, url *url.URL, accept string,
 		resolveByProxy = true
 	}
 	var foundIP *string
-	if !resolveByProxy && net.ParseIP(host) == nil {
+	if !resolveByProxy && ParseIP(host) == nil {
 		xTransport.cachedIPs.RLock()
 		cachedIP := xTransport.cachedIPs.cache[host]
 		xTransport.cachedIPs.RUnlock()