fix(iis-node): pass PORT as NITRO_UNIX_SOCKET

[pi0]

🔗 Linked issue

resolves nuxt/nuxt#22961

(alternative rework of #1697 by @tidan-16)

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

iis-node runtime passes unix socket as PORT environment variable this makes issue for Nitro node listener (Note: this issue only related to iisnode, iis handler passes a valid port.)

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[tolgahanbeyazoglu]

@pi0 The problem still persists on my IIS servers. need help
Operating System: Windows
Node Version: v21.5.0
Nuxt Version: 3.8.1
Nitro Version: 2.8.1

its true ?

export default defineNitroPlugin((nitroApp) => { process.env.NITRO_UNIX_SOCKET = process.env.PORT })

nitro: { plugins: ["~/nitroPlugins/unixsocket.ts"], },