4 module Stack = Continuationals.Stack
6 let rt_path () = Helm_registry.get "matita.rt_base_dir"
8 let libdir uid = (rt_path ()) ^ "/users/" ^ uid
10 let utf8_length = Netconversion.ustring_length `Enc_utf8
12 (*** from matitaScript.ml ***)
13 (* let only_dust_RE = Pcre.regexp "^(\\s|\n|%%[^\n]*\n)*$" *)
15 let eval_statement include_paths (* (buffer : GText.buffer) *) status (* script *)
18 let ast,unparsed_text =
21 (* if Pcre.pmatch ~rex:only_dust_RE text then raise Margin; *)
23 GrafiteParser.parsable_statement status
24 (Ulexing.from_utf8_string text) in
25 let ast = MatitaEngine.get_ast status include_paths strm in
27 | `Ast (st, text) -> st, text
29 let floc = match ast with
30 | GrafiteAst.Executable (loc, _)
31 | GrafiteAst.Comment (loc, _) -> loc in
33 let _,lend = HExtlib.loc_of_floc floc in
34 let parsed_text, _parsed_text_len =
35 HExtlib.utf8_parsed_text unparsed_text (HExtlib.floc_of_loc (0,lend)) in
36 let byte_parsed_text_len = String.length parsed_text in
38 String.sub unparsed_text byte_parsed_text_len
39 (String.length unparsed_text - byte_parsed_text_len)
43 MatitaEngine.eval_ast ~include_paths ~do_heavy_checks:false status ("",0,ast)
45 (status, parsed_text, unparsed_txt'),"",(*parsed_text_len*)
46 utf8_length parsed_text
48 (*let save_moo status =
49 let script = MatitaScript.current () in
50 let baseuri = status#baseuri in
51 match script#bos, script#eos with
54 GrafiteTypes.Serializer.serialize ~baseuri:(NUri.uri_of_string baseuri)
56 | _ -> clean_current_baseuri status
59 let sequent_size = ref 40;;
61 let include_paths = ref [];;
65 * <metaname>...</metaname>
72 let _,_,metasenv,subst,_ = s#obj in
73 let render_switch = function
74 | Stack.Open i -> "?" ^ (string_of_int i)
75 | Stack.Closed i -> "<S>?" ^ (string_of_int i) ^ "</S>"
77 let int_of_switch = function
78 | Stack.Open i | Stack.Closed i -> i
80 let sequent = function
82 let meta = List.assoc i metasenv in
83 snd (ApplyTransformation.ntxt_of_cic_sequent
84 ~metasenv ~subst ~map_unicode_to_tex:false !sequent_size s (i,meta))
85 | Stack.Closed _ -> "This goal has already been closed."
87 let render_sequent is_loc acc depth tag (pos,sw) =
88 let metano = int_of_switch sw in
91 (match depth, pos with
92 | 0, 0 -> "<B>" ^ (render_switch sw) ^ "</B>"
94 Printf.sprintf "<B>|<SUB>%d</SUB>: %s</B>" pos (render_switch sw)
95 | 1, pos when Stack.head_tag s#stack = `BranchTag ->
96 Printf.sprintf "|<SUB>%d</SUB> : %s" pos (render_switch sw)
97 | _ -> render_switch sw)
100 prerr_endline "pippo1";
102 Netencoding.Html.encode ~in_enc:`Enc_utf8 ~prefer_name:false () markup in
103 let markup = "<metaname>" ^ markup ^ "</metaname>" in
104 prerr_endline "pippo2";
106 Netencoding.Html.encode ~in_enc:`Enc_utf8 ~prefer_name:false () (sequent sw)
108 let txt0 = "<goal>" ^ sequent ^ "</goal>" in
109 "<meta number=\"" ^ (string_of_int metano) ^ "\">" ^ markup ^
110 txt0 ^ "</meta>" ^ acc
112 let res = "<metasenv>" ^
114 ~env:(render_sequent true) ~cont:(render_sequent false)
115 ~todo:(render_sequent false) "" s#stack) ^
118 prerr_endline ("sending metasenv:\n" ^ res); res
121 (* let html_of_status s =
122 let _,_,metasenv,subst,_ = s#obj in
123 let txt = List.fold_left
124 (fun acc (nmeta,_ as meta) ->
125 let txt0 = snd (ApplyTransformation.ntxt_of_cic_sequent
126 ~metasenv ~subst ~map_unicode_to_tex:false 80 s meta)
128 prerr_endline ("### txt0 = " ^ txt0);
129 ("<B>Goal ?" ^ (string_of_int nmeta) ^ "</B>\n" ^ txt0)::acc)
132 String.concat "\n\n" txt
135 let html_of_matita s =
136 prerr_endline ("input: " ^ s);
137 let patt1 = Str.regexp "\005" in
138 let patt2 = Str.regexp "\006" in
139 let patt3 = Str.regexp "<" in
140 let patt4 = Str.regexp ">" in
141 let res = Str.global_replace patt4 ">" s in
142 prerr_endline ("output: " ^ res);
143 let res = Str.global_replace patt3 "<" res in
144 prerr_endline ("output: " ^ res);
145 let res = Str.global_replace patt2 ">" res in
146 prerr_endline ("output: " ^ res);
147 let res = Str.global_replace patt1 "<" res in
148 prerr_endline ("output: " ^ res);
152 let heading_nl_RE = Pcre.regexp "^\\s*\n\\s*";;
155 let s = Pcre.replace ~rex:heading_nl_RE s in
157 let nl_pos = String.index s '\n' in
158 String.sub s 0 nl_pos
162 let read_file fname =
163 let chan = open_in fname in
164 let lines = ref [] in
167 lines := input_line chan :: !lines
169 with End_of_file -> close_in chan);
170 String.concat "\n" (List.rev !lines)
173 let load_index outchan =
174 let s = read_file "index.html" in
175 Http_daemon.respond ~headers:["Content-Type", "text/html"] ~code:(`Code 200) ~body:s outchan
178 let load_doc filename outchan =
179 let s = read_file filename in
181 try String.sub filename (String.length filename - 4) 4 = ".png"
182 with Invalid_argument _ -> false
184 let contenttype = if is_png then "image/png" else "text/html" in
185 Http_daemon.respond ~headers:["Content-Type", contenttype] ~code:(`Code 200) ~body:s outchan
188 let retrieve (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
189 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
190 let env = cgi#environment in
192 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
193 let sid = HExtlib.unopt sid in
194 let uid = MatitaAuthentication.user_of_session sid in
198 ~content_type:"text/xml; charset=\"utf-8\""
201 let filename = libdir uid ^ "/" ^ (cgi # argument_value "file") in
202 prerr_endline ("reading file " ^ filename);
204 Netencoding.Html.encode ~in_enc:`Enc_utf8 ~prefer_name:false ()
205 (html_of_matita (read_file filename)) in
207 (* html_of_matita (read_file filename) in *)
208 prerr_endline ("sending:\nBEGIN\n" ^ body ^ "\nEND");
209 let body = "<response><file>" ^ body ^ "</file></response>" in
210 let baseuri, incpaths =
212 let root, baseuri, _fname, _tgt =
213 Librarian.baseuri_of_script ~include_paths:[] filename in
216 Str.split (Str.regexp " ")
217 (List.assoc "include_paths" (Librarian.load_root_file (root^"/root")))
220 let rc = root :: includes in
221 List.iter (HLog.debug) rc; baseuri, rc
223 Librarian.NoRootFor _ | Librarian.FileNotFound _ -> "",[] in
224 include_paths := incpaths;
225 let status = MatitaAuthentication.get_status sid in
226 MatitaAuthentication.set_status sid (status#set_baseuri baseuri);
229 ~content_type:"text/xml; charset=\"utf-8\""
231 cgi#out_channel#output_string body;
235 ~status:`Internal_server_error
237 ~content_type:"text/html; charset=\"utf-8\""
239 cgi#out_channel#commit_work()
242 let advance0 sid text =
243 let status = MatitaAuthentication.get_status sid in
244 let status = status#reset_disambiguate_db () in
245 let (st,new_statements,new_unparsed),(* newtext TODO *) _,parsed_len =
247 eval_statement !include_paths (*buffer*) status (`Raw text)
249 | HExtlib.Localized (_,e) -> raise e
250 (*| End_of_file -> raise Margin *)
252 let stringbuf = Ulexing.from_utf8_string new_statements in
253 let interpr = GrafiteDisambiguate.get_interpr st#disambiguate_db in
254 let outstr = ref "" in
255 ignore (SmallLexer.mk_small_printer interpr outstr stringbuf);
256 prerr_endline ("parser output: " ^ !outstr);
257 MatitaAuthentication.set_status sid st;
259 Netencoding.Html.encode ~in_enc:`Enc_utf8 ~prefer_name:false
260 () (html_of_matita !outstr), new_unparsed, st
262 let register (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
263 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
264 let env = cgi#environment in
266 assert (cgi#arguments <> []);
267 let uid = cgi#argument_value "userid" in
268 let userpw = cgi#argument_value "password" in
270 MatitaAuthentication.add_user uid userpw;
271 env#set_output_header_field "Location" "/index.html"
273 | MatitaAuthentication.UsernameCollision _ ->
276 ~content_type:"text/html; charset=\"utf-8\""
278 cgi#out_channel#output_string
279 "<html><head></head><body>Error: User id collision!</body></html>"
280 | MatitaFilesystem.SvnError msg ->
283 ~content_type:"text/html; charset=\"utf-8\""
285 cgi#out_channel#output_string
286 ("<html><head></head><body><p>Error: Svn checkout failed!<p><p><textarea>"
287 ^ msg ^ "</textarea></p></body></html>"));
288 cgi#out_channel#commit_work()
291 let login (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
292 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
293 let env = cgi#environment in
295 assert (cgi#arguments <> []);
296 let uid = cgi#argument_value "userid" in
297 let userpw = cgi#argument_value "password" in
298 let pw,_ = MatitaAuthentication.lookup_user uid in
302 let _ = MatitaFilesystem.html_of_library uid in
303 let sid = MatitaAuthentication.create_session uid in
304 (* let cookie = Netcgi.Cookie.make "session" (Uuidm.to_string sid) in
305 cgi#set_header ~set_cookies:[cookie] (); *)
306 env#set_output_header_field
307 "Set-Cookie" ("session=" ^ (Uuidm.to_string sid));
308 env#set_output_header_field "Location" "/index.html"
312 prerr_endline ("ERROR: received " ^ userpw ^ "but the password is " ^ pw);
315 ~content_type:"text/html; charset=\"utf-8\""
317 cgi#out_channel#output_string
318 "<html><head></head><body>Authentication error</body></html>"
321 cgi#out_channel#commit_work()
325 let logout (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
326 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
327 let env = cgi#environment in
329 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
330 let sid = HExtlib.unopt sid in
331 MatitaAuthentication.logout_user sid;
334 ~content_type:"text/html; charset=\"utf-8\""
336 let text = read_file (rt_path () ^ "/logout.html") in
337 cgi#out_channel#output_string text
341 ~status:`Internal_server_error
343 ~content_type:"text/html; charset=\"utf-8\""
345 cgi#out_channel#commit_work()
348 let save (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
349 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
350 let env = cgi#environment in
352 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
353 let sid = HExtlib.unopt sid in
354 let status = MatitaAuthentication.get_status sid in
355 let uid = MatitaAuthentication.user_of_session sid in
356 assert (cgi#arguments <> []);
357 let locked = cgi#argument_value "locked" in
358 let unlocked = cgi#argument_value "unlocked" in
359 let filename = libdir uid ^ "/" ^ (cgi # argument_value "file") in
360 prerr_endline ("Matita will save the file for user " ^ uid);
361 let oc = open_out filename in
362 output_string oc (locked ^ unlocked);
364 if MatitaEngine.eos status unlocked then
366 prerr_endline ("serializing proof objects...");
367 GrafiteTypes.Serializer.serialize
368 ~baseuri:(NUri.uri_of_string status#baseuri) status;
369 prerr_endline ("adding to the commit queue...");
370 MatitaFilesystem.add_user uid;
371 prerr_endline ("done.");
375 ~content_type:"text/xml; charset=\"utf-8\""
377 cgi#out_channel#output_string "<response>ok</response>"
381 ~status:`Internal_server_error
383 ~content_type:"text/xml; charset=\"utf-8\""
385 cgi#out_channel#commit_work()
388 let initiate_commit (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
389 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
390 let env = cgi#environment in
392 let errors = MatitaFilesystem.do_global_commit () in
393 prerr_endline ("commit errors: " ^ (String.concat " " errors));
396 ~content_type:"text/xml; charset=\"utf-8\""
398 cgi#out_channel#output_string "<response>ok</response>"
402 ~status:`Internal_server_error
404 ~content_type:"text/xml; charset=\"utf-8\""
406 cgi#out_channel#commit_work()
409 (* returns the length of the executed text and an html representation of the
411 let advance (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
412 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
413 let env = cgi#environment in
415 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
416 let sid = HExtlib.unopt sid in
420 ~content_type:"text/xml; charset=\"utf-8\""
423 let text = cgi#argument_value "body" in
424 prerr_endline ("body =\n" ^ text);
425 let history = MatitaAuthentication.get_history sid in
426 let parsed_len, new_parsed, new_unparsed, new_status = advance0 sid text in
427 MatitaAuthentication.set_history sid (new_status::history);
428 let txt = output_status new_status in
430 "<response><parsed length=\"" ^ (string_of_int parsed_len) ^ "\">" ^
431 new_parsed ^ "</parsed>" ^ txt
434 prerr_endline ("sending advance response:\n" ^ body);
437 ~content_type:"text/xml; charset=\"utf-8\""
439 cgi#out_channel#output_string body
443 ~status:`Internal_server_error
445 ~content_type:"text/xml; charset=\"utf-8\""
447 cgi#out_channel#commit_work()
450 let gotoBottom (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
451 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
452 let env = cgi#environment in
454 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
455 let sid = HExtlib.unopt sid in
456 let history = MatitaAuthentication.get_history sid in
458 let rec aux parsed_len parsed_txt text =
460 prerr_endline ("evaluating: " ^ first_line text);
461 let plen,new_parsed,new_unparsed,_new_status = advance0 sid text in
462 aux (parsed_len+plen) (parsed_txt ^ new_parsed) new_unparsed
465 let status = MatitaAuthentication.get_status sid in
466 GrafiteTypes.Serializer.serialize
467 ~baseuri:(NUri.uri_of_string status#baseuri) status;
468 if parsed_len > 0 then
469 MatitaAuthentication.set_history sid (status::history);
470 parsed_len, parsed_txt
471 | _ -> parsed_len, parsed_txt
476 ~content_type:"text/xml; charset=\"utf-8\""
479 let text = cgi#argument_value "body" in
480 prerr_endline ("body =\n" ^ text);
481 let parsed_len, new_parsed = aux 0 "" text in
482 let status = MatitaAuthentication.get_status sid in
483 let txt = output_status status in
485 "<response><parsed length=\"" ^ (string_of_int parsed_len) ^ "\">" ^
486 new_parsed ^ "</parsed>" ^ txt
490 "<response><parsed length=\"" ^ (string_of_int parsed_len) ^ "\" />" ^ txt
493 prerr_endline ("sending goto bottom response:\n" ^ body);
496 ~content_type:"text/xml; charset=\"utf-8\""
498 cgi#out_channel#output_string body
499 with Not_found -> cgi#set_header ~status:`Internal_server_error
501 ~content_type:"text/xml; charset=\"utf-8\"" ());
502 cgi#out_channel#commit_work()
505 let retract (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
506 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
507 let env = cgi#environment in
508 prerr_endline "executing retract";
510 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
511 let sid = HExtlib.unopt sid in
515 ~content_type:"text/xml; charset=\"utf-8\""
518 let history = MatitaAuthentication.get_history sid in
519 let new_history,new_status =
521 _::(status::_ as history) ->
523 | [_] -> (prerr_endline "singleton";failwith "retract")
524 | _ -> (prerr_endline "nil"; assert false) in
525 prerr_endline "before time_travel";
526 NCicLibrary.time_travel new_status;
527 prerr_endline "after time travel";
528 MatitaAuthentication.set_history sid new_history;
529 MatitaAuthentication.set_status sid new_status;
530 prerr_endline ("after retract history.length = " ^
531 string_of_int (List.length new_history));
532 let body = output_status new_status in
535 ~content_type:"text/xml; charset=\"utf-8\""
537 cgi#out_channel#output_string body
538 with _ -> cgi#set_header ~status:`Internal_server_error
540 ~content_type:"text/xml; charset=\"utf-8\"" ());
541 cgi#out_channel#commit_work()
545 let viewLib (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
546 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
547 let env = cgi#environment in
549 let sid = Uuidm.of_string (Netcgi.Cookie.value (env#cookie "session")) in
550 let sid = HExtlib.unopt sid in
554 ~content_type:"text/html; charset=\"utf-8\""
557 let uid = MatitaAuthentication.user_of_session sid in
559 let html = MatitaFilesystem.html_of_library uid in
562 ~content_type:"text/html; charset=\"utf-8\""
564 cgi#out_channel#output_string
567 "<title>XML Tree Control</title>\n" ^
568 "<link href=\"treeview/xmlTree.css\" type=\"text/css\" rel=\"stylesheet\">\n" ^
569 "<script src=\"treeview/xmlTree.js\" type=\"text/javascript\"></script>\n" ^
571 html (* ^ "\n</body></html>" *) );
572 cgi#out_channel#commit_work()
576 let resetLib (cgi : Netcgi1_compat.Netcgi_types.cgi_activation) =
577 let cgi = Netcgi1_compat.Netcgi_types.of_compat_activation cgi in
578 MatitaAuthentication.reset ();
581 ~content_type:"text/html; charset=\"utf-8\""
584 cgi#out_channel#output_string
586 "<title>Matitaweb Reset</title>\n" ^
587 "<body><H1>Reset completed</H1></body></html>");
588 cgi#out_channel#commit_work()
590 open Netcgi1_compat.Netcgi_types;;
592 (**********************************************************************)
593 (* Create the webserver *)
594 (**********************************************************************)
598 let (opt_list, cmdline_cfg) = Netplex_main.args() in
600 let use_mt = ref true in
603 [ "-mt", Arg.Set use_mt,
604 " Use multi-threading instead of multi-processing"
609 (fun s -> raise (Arg.Bad ("Don't know what to do with: " ^ s)))
610 "usage: netplex [options]";
613 Netplex_mt.mt() (* multi-threading *)
615 Netplex_mp.mp() in (* multi-processing *)
618 { Nethttpd_services.dyn_handler = (fun _ -> process1);
619 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
620 dyn_uri = None; (* not needed *)
621 dyn_translator = (fun _ -> ""); (* not needed *)
622 dyn_accept_all_conditionals = false;
626 { Nethttpd_services.dyn_handler = (fun _ -> advance);
627 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
628 dyn_uri = None; (* not needed *)
629 dyn_translator = (fun _ -> ""); (* not needed *)
630 dyn_accept_all_conditionals = false;
633 { Nethttpd_services.dyn_handler = (fun _ -> retract);
634 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
635 dyn_uri = None; (* not needed *)
636 dyn_translator = (fun _ -> ""); (* not needed *)
637 dyn_accept_all_conditionals = false;
640 { Nethttpd_services.dyn_handler = (fun _ -> gotoBottom);
641 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
642 dyn_uri = None; (* not needed *)
643 dyn_translator = (fun _ -> ""); (* not needed *)
644 dyn_accept_all_conditionals = false;
647 { Nethttpd_services.dyn_handler = (fun _ -> retrieve);
648 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
649 dyn_uri = None; (* not needed *)
650 dyn_translator = (fun _ -> ""); (* not needed *)
651 dyn_accept_all_conditionals = false;
654 { Nethttpd_services.dyn_handler = (fun _ -> register);
655 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
656 dyn_uri = None; (* not needed *)
657 dyn_translator = (fun _ -> ""); (* not needed *)
658 dyn_accept_all_conditionals = false;
661 { Nethttpd_services.dyn_handler = (fun _ -> login);
662 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
663 dyn_uri = None; (* not needed *)
664 dyn_translator = (fun _ -> ""); (* not needed *)
665 dyn_accept_all_conditionals = false;
668 { Nethttpd_services.dyn_handler = (fun _ -> logout);
669 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
670 dyn_uri = None; (* not needed *)
671 dyn_translator = (fun _ -> ""); (* not needed *)
672 dyn_accept_all_conditionals = false;
675 { Nethttpd_services.dyn_handler = (fun _ -> viewLib);
676 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
677 dyn_uri = None; (* not needed *)
678 dyn_translator = (fun _ -> ""); (* not needed *)
679 dyn_accept_all_conditionals = false;
682 { Nethttpd_services.dyn_handler = (fun _ -> resetLib);
683 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
684 dyn_uri = None; (* not needed *)
685 dyn_translator = (fun _ -> ""); (* not needed *)
686 dyn_accept_all_conditionals = false;
689 { Nethttpd_services.dyn_handler = (fun _ -> save);
690 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
691 dyn_uri = None; (* not needed *)
692 dyn_translator = (fun _ -> ""); (* not needed *)
693 dyn_accept_all_conditionals = false;
696 { Nethttpd_services.dyn_handler = (fun _ -> initiate_commit);
697 dyn_activation = Nethttpd_services.std_activation `Std_activation_buffered;
698 dyn_uri = None; (* not needed *)
699 dyn_translator = (fun _ -> ""); (* not needed *)
700 dyn_accept_all_conditionals = false;
703 let nethttpd_factory =
704 Nethttpd_plex.nethttpd_factory
705 ~handlers:[ "advance", do_advance
706 ; "retract", do_retract
707 ; "bottom", goto_bottom
709 ; "register", do_register
711 ; "logout", do_logout
712 ; "reset", do_resetlib
713 ; "viewlib", do_viewlib
715 ; "commit", do_commit]
717 MatitaInit.initialize_all ();
718 MatitaAuthentication.deserialize ();
721 Netplex_log.logger_factories (* allow all built-in logging styles *)
722 Netplex_workload.workload_manager_factories (* ... all ways of workload management *)
723 [ nethttpd_factory ] (* make this nethttpd available *)
727 Sys.set_signal Sys.sigpipe Sys.Signal_ignore;