~ Result.bind

unikernel/connect.ml

@@ -105,21 +105,24 @@ struct
 end
 
 let decode_uri ~ctx uri =
-  let ( >>= ) = Result.bind in
+  let ( let* ) = Result.bind in
   match String.split_on_char '/' uri with
   | proto :: "" :: user_pass_host_port :: _path ->
-      (if String.equal proto "http:" then
-         Ok ("http", Mimic.add connect_scheme "http" ctx)
-       else if String.equal proto "https:" then
-         Ok ("https", Mimic.add connect_scheme "https" ctx)
-       else Error (`Msg "Couldn't decode user and password"))
-      >>= fun (_scheme, ctx) ->
-      (match String.split_on_char '@' user_pass_host_port with
+      let* _scheme, ctx =
+        if String.equal proto "http:" then
+          Ok ("http", Mimic.add connect_scheme "http" ctx)
+        else if String.equal proto "https:" then
+          Ok ("https", Mimic.add connect_scheme "https" ctx)
+        else Error (`Msg "Couldn't decode user and password")
+      in
+      let* _user_pass, host_port =
+        match String.split_on_char '@' user_pass_host_port with
         | [ host_port ] -> Ok (None, host_port)
         | [ _user_pass; host_port ] -> Ok (None, host_port)
-        | _ -> Error (`Msg "Couldn't decode URI"))
-      >>= fun (_user_pass, host_port) ->
-      (match String.split_on_char ':' host_port with
+        | _ -> Error (`Msg "Couldn't decode URI")
+      in
+      let* hostname, ctx =
+        match String.split_on_char ':' host_port with
         | [] -> Error (`Msg "Empty host & port")
         | [ hostname ] -> Ok (hostname, Mimic.add connect_hostname hostname ctx)
         | hd :: tl -> (
@@ -133,17 +136,18 @@ let decode_uri ~ctx uri =
                 ( hostname,
                   Mimic.add connect_hostname hostname
                     (Mimic.add connect_port (int_of_string port) ctx) )
-            with Failure _ -> Error (`Msg "Couldn't decode port")))
-      >>= fun (hostname, ctx) -> Ok (ctx, hostname)
+            with Failure _ -> Error (`Msg "Couldn't decode port"))
+      in
+      Ok (ctx, hostname)
   | _ -> Error (`Msg "Couldn't decode URI on top")
 
 let tls_config ?tls_config authenticator =
+  let ( let* ) = Result.bind in
   lazy
     (match tls_config with
     | Some cfg -> Ok (`Custom cfg)
     | None ->
         let alpn_protocols = [ "h2"; "http/1.1" ] in
-        let ( let* ) = Result.bind in
         let* authenticator = authenticator in
         let* cfg = Tls.Config.client ~alpn_protocols ~authenticator () in
         Ok (`Default cfg))