- the mathql interpreter is not helm-dependent any more

[helm.git] / helm / DEVEL / ocaml-http / http_daemon.ml

diff --git a/helm/DEVEL/ocaml-http/http_daemon.ml b/helm/DEVEL/ocaml-http/http_daemon.ml
index 9e49551f4c6ac742ceaebd1a3040cc624814b9d7..9e0507dd2b1a4135643cef76cdfa73b9864edbe8 100644 (file)
--- a/helm/DEVEL/ocaml-http/http_daemon.ml
+++ b/helm/DEVEL/ocaml-http/http_daemon.ml
@@ -26,18 +26,6 @@ open Http_types;;
 open Http_constants;;
 open Http_parser;;
 
-let debug = true
-let debug_print str =
-  if debug then begin
-    prerr_endline ("DEBUG: " ^ str);
-    flush stderr
-  end
-
-let default_addr = "0.0.0.0"
-let default_port = 80
-let default_timeout = 300
-let default_mode = `Fork
-
   (** send raw data on outchan, flushing it afterwards *)
 let send_raw ~data outchan =
   output_string outchan data;
@@ -191,9 +179,11 @@ let respond_forbidden ~url ?(version = http_version) outchan =
   send_empty_response
     "Daemon.respond_permission_denied" ~body:"" () ~version ~code:403 outchan
 
-let send_file ?name ?file outchan =
+(* let send_file ?name ?file outchan = *)
+let send_file ~src outchan =
   let buflen = 1024 in
   let buf = String.make buflen ' ' in
+(*
   let (file, cleanup) =
     (match (name, file) with
     | Some n, None -> (* if we open the file, we close it before returning *)
@@ -203,6 +193,14 @@ let send_file ?name ?file outchan =
     | _ ->  (* TODO use some static type checking *)
         failwith "Daemon.send_file: either name or file must be given")
   in
+*)
+  let (file, cleanup) =
+    match src with
+    | FileSrc fname -> (* if we open the file, we close it before returning *)
+        let f = open_in fname in
+        f, (fun () -> close_in f)
+    | InChanSrc inchan -> inchan, ignore
+  in
   try
     while true do
       let bytes = input file buf 0 buflen in
@@ -261,7 +259,7 @@ let respond_file ~fname ?(version = http_version) outchan =
           ~value:(string_of_int (Http_misc.filesize fname))
           outchan;
         send_CRLF outchan;
-        send_file ~file outchan;
+        send_file ~src:(InChanSrc file) outchan;
         close_in file
       end
     with
@@ -281,6 +279,9 @@ let respond_with (res: Http_types.response) outchan =
   skip to next request *)
 exception Again;;
 
+let pp_parse_exc e =
+  sprintf "HTTP request parse error: %s" (Printexc.to_string e)
+
   (* given a Http_parser.parse_request like function, wrap it in a function that
   do the same and additionally catch parsing exception sending HTTP error
   messages back to client as needed. Returned function raises Again when it
@@ -292,10 +293,12 @@ let rec wrap_parse_request_w_safety parse_function inchan outchan =
   (try
     parse_function inchan
   with
-  | End_of_file ->
+  | (End_of_file) as e ->
+      debug_print (pp_parse_exc e);
       respond_error ~code:400 ~body:"Unexpected End Of File" outchan;
       raise Again
-  | Malformed_request req ->
+  | (Malformed_request req) as e ->
+      debug_print (pp_parse_exc e);
       respond_error
         ~code:400
         ~body:(
@@ -303,26 +306,31 @@ let rec wrap_parse_request_w_safety parse_function inchan outchan =
           "<br />\nwhile received request 1st line was:<br />\n" ^ req)
         outchan;
       raise Again
-  | Unsupported_method meth ->
+  | (Invalid_HTTP_method meth) as e ->
+      debug_print (pp_parse_exc e);
       respond_error
         ~code:501
         ~body:("Method '" ^ meth ^ "' isn't supported (yet)")
         outchan;
       raise Again
-  | Malformed_request_URI uri ->
+  | (Malformed_request_URI uri) as e ->
+      debug_print (pp_parse_exc e);
       respond_error ~code:400 ~body:("Malformed URL: '" ^ uri ^ "'") outchan;
       raise Again
-  | Unsupported_HTTP_version version ->
+  | (Invalid_HTTP_version version) as e ->
+      debug_print (pp_parse_exc e);
       respond_error
         ~code:505
         ~body:("HTTP version '" ^ version ^ "' isn't supported (yet)")
         outchan;
       raise Again
-  | Malformed_query query ->
+  | (Malformed_query query) as e ->
+      debug_print (pp_parse_exc e);
       respond_error
         ~code:400 ~body:(sprintf "Malformed query string '%s'" query) outchan;
       raise Again
-  | Malformed_query_part (binding, query) ->
+  | (Malformed_query_part (binding, query)) as e ->
+      debug_print (pp_parse_exc e);
       respond_error
         ~code:400
         ~body:(
@@ -350,9 +358,13 @@ let chdir_to_document_root = function (* chdir to document root *)
 
 let server_of_mode = function
   | `Single -> Http_tcp_server.simple
-  | `Fork   -> Http_tcp_server.ocaml_builtin
+  | `Fork   -> Http_tcp_server.fork
   | `Thread -> Http_tcp_server.thread
 
+  (* TODO what happens when a Quit exception is raised by a callback? Do other
+  callbacks keep on living until the end or are them all killed immediatly?
+  The right semantics should obviously be the first one *)
+
   (* TODO support also chroot to 'root', not only chdir *)
   (* curried request *)
 let start