I Got Sick of Remembering Port Numbers

(gregraiz.com)

52 points | by graiz 2 days ago

24 comments

  • zdw 2 hours ago
    It's like someone should make a file... maybe in /etc ... and put short names for services in it... maybe it could be called /etc/services...
    • tolciho 2 hours ago
      And then they might code up some sort of service lookup tool thingy to use on the train wreck that is the modern web.

        $ getent services gopher
        gopher               70/tcp
      • pratyahava 45 minutes ago
        this is a nice idea, but idk why, in macos if i do `nc -l 127.0.0.1 gopher` and then try to open url "http://127.0.0.1:gopher/" - safari does not open it, no requests visible in the `nc` output.

        also `curl -v http://127.0.0.1:gopher/` gives error message

          * URL rejected: Port number was not a decimal number between 0 and 65535
          * Closing connection
          curl: (3) URL rejected: Port number was not a decimal number between 0 and 65535
        
        so the ports are named, it is nice, but in practice it does not make life easier.
        • bandie91 25 minutes ago
          > http://...:gopher

          is it http or gopher? :)

      • otabdeveloper4 1 hour ago
        Heck, maybe even `resolvectl service`?
    • TomK32 1 hour ago
      Sure, but they are running web-apps they've vibe-coded (hence the .vibe tld) and for that use-case of many web apps that I run in docker containers I use nginx-proxy [0]. All the container needs is a VIRTUAL_HOST environment variable with the domain and what my router needs is an address entry for the wildcard subdomains. I even have nginx-proxy on a internet-accessible staging server.

      [0] https://github.com/nginx-proxy/nginx-proxy

    • huflungdung 41 minutes ago
      [dead]
  • tylorr 2 minutes ago
    I use the tailscale services feature for this, added benefit is I get https.
  • hboon 12 minutes ago
    I use Cloudflare Tunnel so most of the products I build are exposed and listed there. I just add comments for those that aren't exposed (eg. browser extension dev port) to that file too. A single doc means coding agents know to look there and keep it updated too.
  • PufPufPuf 6 minutes ago
    There is no need to come up with "local TLDs" like .vibe, .local, .test and so on -- there is already an industry convention! macOS and most Linux distros support subdomains of localhost, so <anything>.localhost works. You still need the reverse proxy to do the host->port mapping, but you save yourself local DNS fiddling.
  • arjie 1 hour ago
    This is a valid concern, certainly. I use kube for most things so it's not a problem, but my homeserver and its apps run on quadlets that I manage. In my case, I just added a README.md in the server account folder that each project's CLAUDE.md or whatever is configured to read. Then it selects a port and sticks that in the document and to be honest I have a few tens of services and it works. Haha, a direct replacement of machine for my own process.
  • lainzhow 47 minutes ago
    I wonder why not use nginx and some local DNS settings to just serve all these local services under a new, local URL.

    Not too long ago I had a similar issue and solved with that.

    • indigodaddy 25 minutes ago
      I mean, that's essentially what he's recreating here it looks like
  • riffraff 34 minutes ago
    I think about a decade ago pow did something similar, but using the .test domain, and perhaps ruby specific

    https://github.com/basecamp/pow/tree/master

  • pyreal 2 hours ago
    I created something similar to help me spin up complex apps in multiple worktrees with full port orchestration: https://outport.dev/
  • hotfixguru 50 minutes ago
    Vercel’s portless is a great alternative, but unfortunately it doesn’t work well with oauth flows. I’ve built portmap[0] to solve that. Also comes with skills which makes it work really great with coding agents (instructions in the readme).

    [0] https://github.com/JonasKs/portmap

  • sakesun 20 minutes ago
    Aspire.dev should be mentioned here.
  • magicalhippo 58 minutes ago
    I know it's mixing of layers, but I can't help but feel the IPv6 transition missed the boat when they didn't just get rid of ports in the process. They've changed so much else anyway.

    Want to run another webserver instance or whatever on your computer? Get the OS to allocate a new IP for it. Ports be damned.

    Could be implemented in a backwards compatible way by requiring all IPv6 TCP/UDP traffic to use a fixed port number.

  • pratikdeoghare 17 minutes ago
    What I do is use a hash function to derive port number from service name.
  • CGamesPlay 1 hour ago
    I've built this twice before. The main problem that I hit is that the AI agents suck at the process lifecycle management: leaving processes alive, starting the same daemon multiple times, etc.

    From a brief glance over the code I like the approaches I see. Using the `/etc/resolver/` mechanism is a new trick to me!

    The interesting part to me isn't the port numbers, it's the automatic service start/stop, including idle route shutdown.

  • kasperni 2 hours ago
    Not the same, but omeone recently posted this "port" tool here on HN: https://github.com/raskrebs/sonar
  • isodude 1 hour ago
    Why not resolve everything with UNIX sockets instead, that way you can have them named and scoped instead, hiding behind port 443, since it's mosly HTTP anyway.
    • tdeck 55 minutes ago
      Does this work in the browser? How will paths to different resources used by the web app work?
  • tdeck 57 minutes ago
    What is the benefit of using HTTPS for this particular use case?
    • t0mas88 34 minutes ago
      Some browser functions only work over https, localhost is the exception. So if you change localhost:5173 to myapp.vibe it needs a valid certificate.
  • roywashere 11 minutes ago
    I hate these signs of LLM generated texts so much!!

    > The real annoyance is that it wasn’t just one machine. It was layers.

  • elchief 1 hour ago
    I'm slightly annoyed that vite's default port isn't 8483
    • chrisweekly 1 hour ago
      why?
      • kseistrup 1 hour ago
        VITE typed on a T9 keyboard is 8483.
        • hdjrudni 17 minutes ago
          5173 spells Vite...

          173 looks like ITE

          5 in roman numerals is V.

        • ButlerianJihad 21 minutes ago
          T9 is predictive and based on a dictionary and training.

          If you type "8483" on T9, your phone may offer "THUD" or "TITE" or all three, as choices.

          But with a normal telephone keypad, if you dial, e.g. "(800) 555-VITE" then you will always dial "8483".

          https://en.wikipedia.org/wiki/Phoneword

          Also, a service port is always qualified by its protocol. There are separate port namespaces for each IP protocol that uses ports. "8483" is not a service port, until you spell it out:

            8483/tcp
          
          or

            8483/udp
          
          or

            8483/sctp
          
          or

            8483/dccp
          
          etc.

          A TCP stream, for example, consists of a tuple:

            src:port1 dst:port2
  • nektro 1 hour ago
    i have something like this too, currently a 60 line nodejs file
  • system2 1 hour ago
    It is funny, I just built something like this last week and named it "Network". Additionally it scans for any type of data packages arriving at the SonicWall and sees if they are approved by me or not. I am paranoid after using TP Link at home like a dumbass.
  • yunruse 2 days ago
    This project is essentially "give me some metadata & a command which takes env $PORT, and I'll handle the rest". Which is neat!

    I am also sick of handling port numbers - I end up allocating them on a schema to different services, so for testing I can spool any VM/service combination and avoid crossover. But if I want the same service twice, ah...

    It always fascinated me that ports don't have any kind of textual resolver, so you can bind to `:1234` and also say "please also accept `:foobar`". But that would itself require some kind of "port resolver" on a device, and that's another service to break and fix :)

    • winstonwinston 2 days ago
      There is /etc/services to map port numbers to service names, and using getportbyname() to resolve port numbers.
      • axus 2 hours ago
        DNS for /etc/hosts and now vibe.local for /etc/services. What will they think of next!
  • hahahacorn 1 hour ago
    Bind to Port 0
  • dfordp11 1 hour ago
    [dead]