I Got Sick of Remembering Port Numbers

(gregraiz.com)

59 points | by graiz 2 days ago

28 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
      • otabdeveloper4 1 hour ago
        Heck, maybe even `resolvectl service`?
      • pratyahava 1 hour ago
        [dead]
        • Tepix 25 minutes ago
          As bandie pointed out, you‘re explicitly making a http request. Duh.

          nc is for generic connections and handles it well.

          • pratyahava 13 minutes ago
            i know, but the OP's goal was to host/access http(s) services with names and avoid port numbers, and gopher service name was chosen by me as an example. my point was that /etc/services cannot be used for the OP's need.

            if you host an http(s) service on port 11111 you can reach it with url http://127.1:11111, but url http://127.1:vce/ would not work in most software.

              $ grep 11111 /etc/services
              vce  11111/udp   # Viral Computing Environment (VCE)
              vce  11111/tcp   # Viral Computing Environment (VCE)
        • bandie91 55 minutes ago
          > http://...:gopher

          is it http or gopher? :)

          • pratyahava 16 minutes ago
            i chose gopher port just as an example. try with any other service name mapped to a port number from /etc/services and the result will be the same. the OP's goal was to use many http/https services, so we are talking about many http(s) services.

            i just wanted to make the point that even if you have service names in /etc/services, it is not possible to use that names easily to host/access http(s) services.

    • meitham 8 minutes ago
      Perhaps we could even make the file the port itself, perhaps calling it a “socket”? A “unix socket” would be a great name. If we could place all these files behind a local reverse proxy then we could use localhost/jekyll or localhost/fastapi. It’s just a dream
    • TomK32 2 hours 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

    • npodbielski 19 minutes ago
      This is exact problem I see with all of those vibe coded software: In few years everything will be super fragmented, everyone will be using their own set of tools, or vibe coding them, themselves. Communication between teams or even between team members will become very hard because of those differences. 'What do you mean production is down? On my vibe coded dashboard everything is green!'
      • spiderfarmer 7 minutes ago
        Why do people always assume that change is permanent?

        It's never.

        After decentralisation we always see decentralisation. After a period of growth, a decline will follow. After the vibe coding hype, consolidation will follow. After rain comes sunshine.

    • locknitpicker 26 minutes 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...

      People shit-talk container orchestration systems like Kubernetes, but if anything they greatly simplified (if not completely eliminated) the need for this sort of network bookkeeping.

    • huflungdung 1 hour ago
      [dead]
  • lelanthran 6 minutes ago
    I think this product demonstrates the atrophying of thought that results from too much LLM usage: design was obviously a long back-and-forth with a sycophantic LLM.

    I find out what all my local servers are by `cat /etc/hosts`, because I put them in there. They run using an entry in the nginx config.

    For short-lived stuff I don't even bother with that, I just use `whatever.localhost`.

    If there was no LLM, author would have put a little more thought into this, maybe did a google search, and realised that all he needed were two shell scripts.

    The more you use LLMs, the less you actually think

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

    > I wanted a simple launcher for all the things that aren’t traditional desktop apps. Not Finder, Alfred or Raycast.

    The entire damn article is like this - why would I trust software to run on my local machine when it was written by someone who did not even take care writing a blog post? How much care would they have possibly put into reviewing their vibe coded slop if they couldn't even bother to review their blog post?

  • magicalhippo 1 hour 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.

  • lainzhow 1 hour 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.

    • gbalduzzi 25 minutes ago
      I did the same using caddy for ease of getting https certificates
    • indigodaddy 55 minutes ago
      I mean, that's essentially what he's recreating here it looks like
  • Hard_Space 22 minutes ago
    I use subdomains on an OVH VPS, since I want to access the services outside the network, so I can use freshrss.mydomain.com. But anything that can rationalize port number sprawl is welcome.
  • PufPufPuf 36 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.
    • locknitpicker 29 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.

      That would work if your goal was to route traffic to localhost.

      What if it isn't?

      There are reasons why the likes of example.com exists.

      • ButlerianJihad 19 minutes ago
        It looks like this will win: https://en.wikipedia.org/wiki/.internal

        example.com, and the reserved TLD ".example", exist for technical documentation and writing. If you are writing a comment on HN, or a curriculum for a networking class, then you can discuss "foo.example.com connects to bar.example.com" or "Let's hypothesize about two offices called accounts.example and human-resources.example"

        The "example" domains are never supposed to reflect anything that is actually deployed onto LANs, or test labs, or the Internet, current situation notwithstanding.

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

        There are, likewise, IPv4 and IPv6 ranges that are reserved to be used in documentation. Not the 192.168.0.0/24 or 10.0.0.0/8, but separate ranges that writers only write about, and are never deployed, not even in private.

        localhost is only ever going to be the loopback interface, never across a network: https://en.wikipedia.org/wiki/.localhost#Conventional_use

        See also: https://en.wikipedia.org/wiki/.test

        The latter article lists foreign-language TLDs which serve the same purpose.

        Some proposals are described here: https://en.wikipedia.org/wiki/.home

  • 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 1 hour ago
      Does this work in the browser? How will paths to different resources used by the web app work?
      • dvhh 21 minutes ago
        works with curl, maybe there is a case to either build a proxy for UDS and expose them to a browser, or open a request ticket to browser maintainers to support UDS
  • 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.
  • hboon 41 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.
  • lihanghanger 21 minutes ago
    This is a neat approach. One thing I wonder about is how it handles services that use the same port number across different protocols (like 443 for both HTTPS and SMTPS). The /etc/services file approach has the same ambiguity, but at least it lists the protocol alongside the port. A lookup table that includes protocol would be more robust for mixed environments.
  • 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 1 hour 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

  • riffraff 1 hour 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

  • tylorr 32 minutes ago
    I use the tailscale services feature for this, added benefit is I get https.
  • CGamesPlay 2 hours 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
  • sakesun 50 minutes ago
    Aspire.dev should be mentioned here.
  • pratikdeoghare 47 minutes ago
    What I do is use a hash function to derive port number from service name.
  • roywashere 41 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.

  • tdeck 1 hour ago
    What is the benefit of using HTTPS for this particular use case?
    • t0mas88 1 hour 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.
  • elchief 2 hours ago
    I'm slightly annoyed that vite's default port isn't 8483
    • chrisweekly 2 hours ago
      why?
      • kseistrup 1 hour ago
        VITE typed on a T9 keyboard is 8483.
        • hdjrudni 46 minutes ago
          5173 spells Vite...

          173 looks like ITE

          5 in roman numerals is V.

        • ButlerianJihad 50 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
  • 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!
  • 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.
  • hahahacorn 2 hours ago
    Bind to Port 0
  • tibtof 1 minute ago
    [dead]
  • dfordp11 1 hour ago
    [dead]