From 91d182216ffb67b7cbb64d095ccbc09c8d278b39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juho=20M=C3=A4kinen?= <juho@squareup.com>
Date: Thu, 3 Oct 2024 15:01:34 +1000
Subject: [PATCH] fix: infinite loop if port binding fails for all ports for
 some reason (#2972)

---
 internal/bind/bind_allocator.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/internal/bind/bind_allocator.go b/internal/bind/bind_allocator.go
index 5bc8932a98..d6291ed52f 100644
--- a/internal/bind/bind_allocator.go
+++ b/internal/bind/bind_allocator.go
@@ -33,11 +33,19 @@ func NewBindAllocator(url *url.URL) (*BindAllocator, error) {
 func (b *BindAllocator) NextPort() int {
 	var l *net.TCPListener
 	var err error
+
+	maxTries := 5000
+
+	tries := 0
 	for {
+		tries++
 		port := int(b.port.Add(1))
 		l, err = net.ListenTCP("tcp", &net.TCPAddr{IP: net.ParseIP(b.baseURL.Hostname()), Port: port})
 
 		if err != nil {
+			if tries >= maxTries {
+				panic("failed to find an open port: " + err.Error())
+			}
 			continue
 		}
 		_ = l.Close()