tiny_httpd

Minimal HTTP server using good old threads
README

Minimal HTTP server using good old threads, with stream abstractions,
simple routing, URL encoding/decoding, and optional compression with camlzip.

Free from all forms of ppx, async monads, etc.

Note: it can be useful to add the jemalloc opam package for long running
server, as it does a good job at controlling memory usage.

The basic echo server from src/examples/echo.ml:


module S = Tiny_httpd

let () =
  let server = S.create () in
  (* say hello *)
  S.add_route_handler ~meth:`GET server
    S.Route.(exact "hello" @/ string @/ return)
    (fun name _req -> S.Response.make_ok ("hello " ^name ^"!\n"));
  (* echo request *)
  S.add_route_handler server
    S.Route.(exact "echo" @/ return)
    "/echo" (fun req -> S.Response.make_ok (Format.asprintf "echo:@ %a@." S.Request.pp req));
  Printf.printf "listening on http://%s:%d\n%!" (S.addr server) (S.port server);
  match S.run server with
  | Ok () -> ()
  | Error e -> raise e
$ dune exec src/examples/echo.exe &
listening on http://127.0.0.1:8080

# the path "hello/name" greets you.
$ curl -X GET http://localhost:8080/hello/quadrarotaphile
hello quadrarotaphile!

# the path "echo" just prints the request.
$ curl -X GET http://localhost:8080/echo --data "howdy y'all" 
echo:
{meth=GET;
 headers=Host: localhost:8080
         User-Agent: curl/7.66.0
         Accept: */*
         Content-Length: 10
         Content-Type: application/x-www-form-urlencoded;
 path="/echo"; body="howdy y'all"}

http_of_dir

Similar to python -m http.server, a simple program http_of_dir is provided.
It serves files from the current directory.

$ http_of_dir . -p 8080 &
$ curl -X GET http://localhost:8080
...
<html list of current dir>
...

Why?

Why not? If you just want a super basic local server (perhaps for exposing
data from a local demon, like Cups or Syncthing do), no need for a ton of
dependencies or high scalability libraries.

Use cases might include:

  • serve content directly from a static blog generator

  • provide a web UI to some tool (like CUPS and syncthing do)

  • implement a basic monitoring page for a service

  • provide a simple json API for a service, on top of http

  • use http_of_dir to serve odoc-generated docs or some assets directory

Documentation

See https://c-cube.github.io/tiny_httpd

License

MIT.

Install
Published
29 May 2020
Sources
0.6.tar.gz
md5=4d58ae2c5baa2c8ba03350b077604448
sha512=89b3b1f1292a6da8141385faf093980cf1bb7ed030d67875d27d7514f0d6342664cdb34b1f6c9dc70a93b58015c9d9c303f97d502541d7750b6af4f7cc031a1a
Dependencies
qcheck
with-test & < "0.14"
qtest
>= "2.9" & with-test
odoc
with-doc
ocaml
>= "4.03.0"
dune
>= "1.1"
Reverse Dependencies