Question: Do we have plan to support unix domain socket with Deno.serve?

[kt3k]

If we support unix domain socket transport with Deno.serve, we probably can deprecate the entire std/http/server.ts. Do we have a plan for it?

[kt3k]

Bun seems to have added unix domain socket support to Bun.serve in v0.8.1 https://bun.sh/blog/bun-v0.8.1#start-an-http-server-on-a-unix-domain-socket-with-bun-serve

[bartlomieju]

From what I can tell there are technical roadblocks to support it. @mmastrac any objections?

[aapoalas]

Node also supports serving through Unix socket and this is something I've been meaning to take into use on a particular project elsewhere the moment it becomes possible for that project.

From that point of view, I am personally of the opinion that a Unix socket should be a valid connection option for any HTTP server we have.

[mmastrac]

No objections. I suspect it should be pretty straightforward to implement as the Unix socket is plumbed through on the rust side. It just needs some JS support IIRC

[mmastrac]

@kt3k I believe that this should be implementable like so:

1. Add a Deno.ServeUnixOptions with a path property as a third overload to Deno.serve. ServeUnixOptions will need onListen and onError.

2. If path is present on the options bag, we set a flag wantsUnix:

  const wantsHttps = options.cert || options.key;
  const wantsUnix = "path" in options;

3. If wantsUnix is true, we configure listenOpts to be a unix listener.

4. options.onListen and the default listener message need to be updated to handle the unix listener case.