unikernel/duniverse/httpun/examples/lwt/lwt_echo_post.ml

@@ -0,0 +1,34 @@
+open Base
+open Lwt.Infix
+module Arg = Stdlib.Arg
+
+open Httpun_lwt_unix
+
+let error_handler (_ : Unix.sockaddr) = Httpun_examples.Server.error_handler
+let request_handler (_ : Unix.sockaddr)  =
+  Httpun_examples.Server.echo_post
+
+let main port =
+  let listen_address = Unix.(ADDR_INET (inet_addr_loopback, port)) in
+  Lwt.async (fun () ->
+    Lwt_io.establish_server_with_client_socket
+      listen_address
+      (Server.create_connection_handler ~request_handler ~error_handler)
+    >|= fun _server ->
+      Stdio.printf "Listening on port %i and echoing POST requests.\n" port;
+      Stdio.printf "To send a POST request, try one of the following\n\n";
+      Stdio.printf "  echo \"Testing echo POST\" | dune exec examples/async/async_post.exe\n";
+      Stdio.printf "  echo \"Testing echo POST\" | dune exec examples/lwt/lwt_post.exe\n";
+      Stdio.printf "  echo \"Testing echo POST\" | curl -XPOST --data @- http://localhost:%d\n\n%!" port);
+  let forever, _ = Lwt.wait () in
+  Lwt_main.run forever
+;;
+
+let () =
+  let port = ref 8080 in
+  Arg.parse
+    ["-p", Arg.Set_int port, " Listening port number (8080 by default)"]
+    ignore
+    "Echoes POST requests. Runs forever.";
+  main !port
+;;