2 (** raised when a client timeouts *)
7 (** if timeout is given (Some _) @return a new callback which establish
8 timeout_callback as callback for signal Sys.sigalrm and register an alarm
9 (expiring after timeout seconds) before invoking the real callback given. If
10 timeout is None, callback is returned unchanged. *)
11 let wrap_callback_w_timeout ~callback ~timeout ~timeout_callback =
14 | Some timeout -> (* wrap callback setting an handler for ALRM signal and an
15 alarm that ring after timeout seconds *)
16 (fun inchan outchan ->
17 ignore (Sys.signal Sys.sigalrm (Sys.Signal_handle ~timeout_callback));
18 ignore (Unix.alarm timeout);
19 callback inchan outchan)
21 let init_socket_and_callback sockaddr callback timeout =
22 let suck = Unix.socket Unix.PF_INET Unix.SOCK_STREAM 0 in
23 Unix.setsockopt suck Unix.SO_REUSEADDR true;
24 Unix.bind suck sockaddr;
25 Unix.listen suck backlog;
26 let timeout_callback signo =
27 if signo = Sys.sigalrm then
30 let callback = wrap_callback_w_timeout ~callback ~timeout ~timeout_callback in
33 (** tcp_server which use Unix.establish_server which in turn forks a child for
35 let ocaml_builtin ~sockaddr ~timeout callback =
36 let timeout_callback signo =
37 if signo = Sys.sigalrm then
41 (wrap_callback_w_timeout ~callback ~timeout ~timeout_callback)
44 (** tcp_server which doesn't fork, requests are server sequentially and in the
45 same address space of the calling process *)
46 let simple ~sockaddr ~timeout callback =
47 let (suck, callback) = init_socket_and_callback sockaddr callback timeout in
49 let (client, _) = Unix.accept suck in
50 (* client is now connected *)
51 let (inchan, outchan) =
52 (Unix.in_channel_of_descr client, Unix.out_channel_of_descr client)
55 callback inchan outchan;
56 ignore (Unix.alarm 0) (* reset alarm *)
58 close_out outchan (* this close also inchan, because socket is the same *)
61 (** tcp_server which creates a new thread for each request to be served *)
62 let thread ~sockaddr ~timeout callback =
63 let (suck, callback) = init_socket_and_callback sockaddr callback timeout in
69 | Timeout -> close_out o
75 let (client, _) = Unix.accept suck in
76 (* client is now connected *)
77 let (inchan, outchan) =
78 (Unix.in_channel_of_descr client, Unix.out_channel_of_descr client)
80 Http_threaded_tcp_server.serve callback (inchan, outchan)