Skip to the content
Dorris
Book a demo
Menu
What it doesHow it worksPricingLook insideLessonsField manualHow I workLibraryGlossary

Word

Port

A port is a numbered door on a computer: a program waits at one number so other programs know where to knock.

A port is a numbered door on your computer: a program waits at one number so other programs know where to knock. That's why an app running on your own machine has an address with a colon and a number on the end.

You'll meet ports when you start the app, and again if you start it twice. "Port already in use" almost never means something is broken, it usually means the app is already running in another window. Close that window, or open the localhost address you already have, before you let an agent start changing things.

Related words

All words

Paste this first

Something broke

I just did this: <what you clicked or typed, in a few words>
This is what I got: <paste the error here, or drag in a screenshot>

I don't know what it means. Work out what went wrong and fix it. Then tell me in one plain sentence what was wrong and what you changed, and stop.

Is this really for you?

1 of 7 Where do you sell online?
2 of 7 Would you like software built around exactly how your business works?
3 of 7 When something in your software needs changing, how do you want that to happen?
4 of 7 Have you ever written code?
5 of 7 If something breaks, what kind of help do you need?
6 of 7 Do you pay monthly for an app where you only really use one or two of its features?
7 of 7 Building your app means using an AI assistant like Claude or ChatGPT on a paid monthly plan. Are you OK with that?