From dddcc57d96762a9e2aa592bf5cae6ad1c9c82002 Mon Sep 17 00:00:00 2001
From: Pooya Parsa <pooya@pi0.io>
Date: Wed, 30 Aug 2023 13:15:44 +0200
Subject: [PATCH] fix: use ipv4 for windows and wsl default host

---
 src/_utils.ts | 11 +++++++++++
 src/listen.ts |  3 ++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/_utils.ts b/src/_utils.ts
index 7fb082e..004c8e7 100644
--- a/src/_utils.ts
+++ b/src/_utils.ts
@@ -2,6 +2,7 @@ import { networkInterfaces } from "node:os";
 import { relative } from "pathe";
 import { colors } from "consola/utils";
 import { ListenOptions } from "./types";
+import { isWsl } from "./lib/wsl";
 
 export function getNetworkInterfaces(includeIPV6?: boolean): string[] {
   const addrs = new Set<string>();
@@ -70,6 +71,16 @@ export function generateURL(
   );
 }
 
+export function getDefaultHost(preferPublic?: boolean) {
+  // Prefer IPV4 stack for Windows and WSL to avoid performance issues
+  if (process.platform === "win32" || isWsl()) {
+    return preferPublic ? "0.0.0.0" : "127.0.0.1";
+  }
+  // For local, use "localhost" to be developer friendly and allow loopback customization}
+  // For public, use "" to listen on all NIC interfaces (IPV4 and IPV6)
+  return preferPublic ? "" : "localhost";
+}
+
 export function getPublicURL(
   listhenOptions: ListenOptions,
   baseURL?: string,
diff --git a/src/listen.ts b/src/listen.ts
index 46cffd7..1dff586 100644
--- a/src/listen.ts
+++ b/src/listen.ts
@@ -27,6 +27,7 @@ import {
   isAnyhost,
   getPublicURL,
   generateURL,
+  getDefaultHost,
 } from "./_utils";
 import { resolveCertificate } from "./_cert";
 
@@ -49,7 +50,7 @@ export async function listen(
     name: "",
     https: false,
     port: process.env.PORT || 3000,
-    hostname: _hostname ?? (_public ? "" : "localhost"),
+    hostname: _hostname ?? getDefaultHost(_public),
     showURL: true,
     baseURL: "/",
     open: false,