giles
b45ea2aa16
Some checks failed
Test, Build, and Deploy / test-build-deploy (push) Failing after 30s
50 lines
1.7 KiB
Erlang
50 lines
1.7 KiB
Erlang
-module(http_server).
|
|
-export([route/1, ok_response/1, not_found_response/0, welcome_body/0]).
|
|
|
|
%% HTTP request router per design §16.1.
|
|
%%
|
|
%% Request shape (mirrors what the SX-side `http-listen` builds and
|
|
%% the http:listen/2 BIF bridge marshals into a proplist):
|
|
%% [{method, Binary}, {path, Binary}, {query, Binary},
|
|
%% {headers, [{Name, Value}, ...]}, {body, Binary}]
|
|
%%
|
|
%% Response shape:
|
|
%% [{status, Integer}, {headers, [{Name, Value}, ...]}, {body, Binary}]
|
|
%%
|
|
%% Real dispatch (actor docs, outbox listings, /activity POST,
|
|
%% /.well-known/sx-capabilities, etc.) lands in Step 8c+. Step 8b
|
|
%% wires the route/1 shape and a single hello-world handler that
|
|
%% proves the request→response round-trip.
|
|
%%
|
|
%% Method/path comparison uses integer-segment binaries because
|
|
%% `<<"GET">>` truncates to a single byte in this port.
|
|
|
|
route(Req) ->
|
|
M = field(method, Req),
|
|
P = field(path, Req),
|
|
dispatch(M, P).
|
|
|
|
%% 71 69 84 = "GET" | 47 = "/"
|
|
dispatch(<<71, 69, 84>>, <<47>>) ->
|
|
ok_response(welcome_body());
|
|
dispatch(_, _) ->
|
|
not_found_response().
|
|
|
|
%% "fed-sx kernel m1\n" — 17 bytes, hand-spelled.
|
|
%% f e d - s x _ k e r n e l _ m 1 \n
|
|
welcome_body() ->
|
|
<<102,101,100,45,115,120,32,107,101,114,110,101,108,32,109,49,10>>.
|
|
|
|
ok_response(Body) ->
|
|
[{status, 200}, {headers, []}, {body, Body}].
|
|
|
|
not_found_response() ->
|
|
[{status, 404}, {headers, []},
|
|
{body, <<110,111,116,32,102,111,117,110,100,10>>}]. % "not found\n"
|
|
|
|
%% Internal property-list field lookup. Returns nil when missing
|
|
%% so the route falls into the not_found arm gracefully.
|
|
field(K, [{K, V} | _]) -> V;
|
|
field(K, [_ | Rest]) -> field(K, Rest);
|
|
field(_, []) -> nil.
|