From e538885fa71f92c5974c28edb49db682a0194a33 Mon Sep 17 00:00:00 2001
From: Artemiy Ryabinkov <getlag@ya.ru>
Date: Fri, 13 Sep 2019 17:52:01 +0300
Subject: [PATCH] skip resolve for unix sockets

Signed-off-by: Artemiy Ryabinkov <getlag@ya.ru>
---
 pgconn.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pgconn.go b/pgconn.go
index db2ebe73..25f4f4d5 100644
--- a/pgconn.go
+++ b/pgconn.go
@@ -163,6 +163,17 @@ func expandWithIPs(ctx context.Context, lookupFn LookupFunc, fallbacks []*Fallba
 	var configs []*FallbackConfig
 
 	for _, fb := range fallbacks {
+		// skip resolve for unix sockets
+		if strings.HasPrefix(fb.Host, "/") {
+			configs = append(configs, &FallbackConfig{
+				Host:      fb.Host,
+				Port:      fb.Port,
+				TLSConfig: fb.TLSConfig,
+			})
+
+			continue
+		}
+
 		ips, err := lookupFn(ctx, fb.Host)
 		if err != nil {
 			return nil, err