From e14d1b8b0bdf2da2e40e46175249d260c36cec1d Mon Sep 17 00:00:00 2001
From: Adrien Delorme <adrien.delorme@icloud.com>
Date: Wed, 1 May 2019 12:01:34 +0200
Subject: [PATCH] add a timeout trying to open a random port

---
 common/net/configure_port.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/net/configure_port.go b/common/net/configure_port.go
index cdc0a9168..fddd4b5d6 100644
--- a/common/net/configure_port.go
+++ b/common/net/configure_port.go
@@ -7,6 +7,7 @@ import (
 	"math/rand"
 	"net"
 	"strconv"
+	"time"
 
 	"github.com/hashicorp/packer/common/filelock"
 	"github.com/hashicorp/packer/packer"
@@ -97,5 +98,6 @@ func (lc ListenRangeConfig) Listen(ctx context.Context) (*Listener, error) {
 			lock:     lock,
 		}, err
 
+		time.Sleep(20 * time.Millisecond)
 	}
 }