Netwoking examples..

Netwoking examples..

[Ravi Chamarty]

Hi,

  Can  anyone give me a pointer to a few networking examples in
OCaml using sockets and connects ??


Thanks,
Ravi
----------------------------------------------------------
Ravi S Chamarty                    E-mail: ravi@ittc.ukans.edu
Graduate Research Assistant,       Voice :785-864-7799 
ITTC,2291 Irving Hill Road,                
University of Kansas,
Lawrence KS 66044-7541

Re: Netwoking examples..

[Michel Quercia]

>   Can  anyone give me a pointer to a few networking examples in
> OCaml using sockets and connects ??

If you can read French this paper might help you :

http://pauillac.inria.fr/~quercia/communication.tar.gz

(parallel computation with network examples in Ocaml)
-- 
Michel Quercia
23 rue de Montchapet, 21000 Dijon
http://pauillac.inria.fr/~quercia
mailto:quercia@cal.enst.fr

Re: Netwoking examples..

[Daniel de Rauglaudre]

Hello,

On Thu, May 04, 2000 at 06:06:29PM -0500, Ravi Chamarty wrote:

>   Can  anyone give me a pointer to a few networking examples in
> OCaml using sockets and connects ??

Wserver to create an elementary Web server:
   ftp://ftp.inria.fr/INRIA/Projects/cristal/Daniel.de_Rauglaudre/Tools/

-- 
Daniel de RAUGLAUDRE
daniel.de_rauglaudre@inria.fr
http://cristal.inria.fr/~ddr/

Re: Netwoking examples..

[David Mentré]

Ravi Chamarty <ravi@ittc.ukans.edu> writes:

>   Can  anyone give me a pointer to a few networking examples in
> OCaml using sockets and connects ??

HTML version of the OCaml book spoken about in this mailing list, more
specifically:

Client-server:
  http://www.pps.jussieu.fr/Livres/ora/DA-OCAML/book-ora188.html

The explanations are in french, but the code should be easily readable.


Otherwise, look at code available in the hump, more specifically:

Distributed computing and message passing interfaces
  http://caml.inria.fr/hump.html#distrib

Web tools and libraries
  http://caml.inria.fr/hump.html#web


Hope it helps,
Best regards,
david
-- 
 David.Mentre@irisa.fr -- http://www.irisa.fr/prive/dmentre/
 Opinions expressed here are only mine.

Re: Netwoking examples..

[Benjamin C. Pierce]

>   Can  anyone give me a pointer to a few networking examples in
> OCaml using sockets and connects ??

Unison uses sockets plus ocaml's marshalling feature to implement its
own remote procedure call mechanism.  The code is a bit complex, since
it handles propagation of exceptions, etc., across address spaces,
bidirectional RPC, etc., but it's fairly well modularized.

    http://www.cis.upenn.edu/~bcpierce/unison

  -- B

Re: Netwoking examples..

[tyler]

Hey,
These are two very short programs I hacked up that worked when I tried
them.

Here's a server:
open Unix

let _ = 
  let this_socket = (Unix.socket PF_INET SOCK_STREAM 0) in 
  let this_socket_addr = 
    ADDR_INET ((Unix.inet_addr_of_string "127.0.0.1"), 60648) in
  Unix.bind this_socket this_socket_addr;
  Unix.listen this_socket 3;
  let (client_socket, client_addr) = Unix.accept this_socket in
  let this_string = String.create 100 in
  let number_read = Unix.read client_socket this_string 0 100 in
  let number_written = Unix.write client_socket this_string 0 number_read
in
  Unix.close this_socket;
  exit 0
;;

Here's a client:
open Unix 

let _ = 
  let this_socket = (Unix.socket PF_INET SOCK_STREAM 0) in 
  let server_addr = 
    ADDR_INET ((Unix.inet_addr_of_string "127.0.0.1"), 60648) in
  Unix.connect this_socket server_addr;
  let num_written = Unix.write this_socket "hello world" 0 11 in 
  let response_string = String.create 20 in
  let num_read = Unix.read this_socket response_string 0 20 in 
  print_string response_string;
  Unix.close this_socket;
  exit 0
;;  

Compile them, start up the server program, and then run the client
program. It should print out "hello world".
Again, it's way simple, but it should hopefully give you some ideas. For a
server, make the socket, then bind it to an address, then have it listen
on a port, then have it accept a connection. When you're done, close the
socket (is there an ocaml function for flushing a file descriptor, not an
out_channel?). For a client, just make the socket and tell it where to
connect to. Its own address and port are handled automatically. You might
want to look around for a socket tutorial in c (I've seen one somewhere
before...). If you understand what's happening on both ends, it's a
question of syntax at that point. Have fun!
tyler

On Thu, 4 May 2000, Ravi Chamarty wrote:

> 
> Hi,
> 
>   Can  anyone give me a pointer to a few networking examples in
> OCaml using sockets and connects ??
> 
> 
> Thanks,
> Ravi
> ----------------------------------------------------------
> Ravi S Chamarty                    E-mail: ravi@ittc.ukans.edu
> Graduate Research Assistant,       Voice :785-864-7799 
> ITTC,2291 Irving Hill Road,                
> University of Kansas,
> Lawrence KS 66044-7541
> 

Re: Netwoking examples..

[Charles Neveu]

Folks,

Let me put in a plug for Ensemble, the very excellent distributed communication
system by Mark Hayden, Tim Clark and others in Ken Birman's group at Cornell.
It's written in OCAML and it makes communication between many processes on many
different machines trivial. 

Check it out at 

http://www.cs.cornell.edu/Info/Projects/Ensemble/index.html

Chas

-- 
Dr. Charles Frederick Neveu	T: 650 604-2525
Autonomy and Robotics Group	F: 650 604-4036
NASA Ames Research Center	E: neveu@artemis.arc.nasa.gov
Mail Stop 269-4			W: http://img.arc.nasa.gov:~neveu
Moffett Field, CA 94035-1000