Hello,

   I have added some functionality to the OCaml
run-time library and I am trying to test. I wrote test
case below that refuses to complile.

1) It gets a syntax error on the ending "done" for the
"while true". I have tried trimming down and still the
syntax error. I am sorry for something so elementary.
Can anyone help?

2) I am running on Linux. I did a "man ocamlc" to see
what kind of compiler switches there are. Is there a
compiler switch that gives a more verbose/helpful
error than simply "syntax error"?

Regards, vasili

----------------------------test case-----------------

(* The multicast listener *)
let listen ((my_addr_octet:string),
(multicast_addr_octet:string), multicast_port) =
    let descr = Unix.socket Unix.PF_INET
Unix.SOCK_DGRAM 0
       in
          try
            (* Convert IP octet strings to IP addrs *)
            let my_addr = Unix.inet_addr_of_string
my_addr_octet
              and
                multicast_addr =
Unix.inet_addr_of_string multicast_addr_octet in
            (* Open a UDP socket *)
            let sockaddr = Unix.ADDR_INET(my_addr,
multicast_port)
            in
                                                      
                                  
               (* Bind the sock addr *)
               Unix.bind descr sockaddr;
                                                      
                                  
               (* Set TTL for ipv4 *)
               (* TBD!!! *)
                                                      
                                  
               (* Join the multicast group *)
               Unix.multicast_join descr my_addr
multicast_addr;

               (* Read loop *)
               while true do
                                                      
                                  
                  let (buffer:string) = "" in
                     (* Do blocking read! *)
                     let (x, y) = Unix.recvfrom descr
buffer 0 128 [MSG_OOB]
               done
          with
             _ -> Printf.printf "%s\n" "blah";;     
*)
                                                      
                                  
                                                      
                                  
listen ("127.0.0.1", "225.0.0.37", 12345);;
  

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