[Lksctp-developers] Re: Help with multihoming

[Karthik <kar...@ya...>]

I have done as suggested but i was unsuccessfil. I am
pasting below some code of the client program.

   #define SRV_IP_ADRS_1 "192.168.2.100"
   #define SRV_IP_ADRS_2 "192.168.2.101"

   struct sockaddr_in sin[2];


 if ((sock_fd = socket(AF_INET, SOCK_SEQPACKET,
IPPROTO_SCTP)) == -1) 
           perror("\nCannot create socket\n");

     sin[0].sin_family = AF_INET;
     sin[0].sin_port = htons(3333);
     sin[0].sin_addr.s_addr =
inet_addr(SRV_IP_ADRS_1);

     if(connect(sock_fd,(struct sockaddr
*)&sin[0],sizeof(struct sockaddr_in)) < 0)
     {       
       perror("\nCan't connect to server\n");
       exit(0);
     }
     
     sin[1].sin_family = AF_INET;
     sin[1].sin_port = htons(3333);   
     sin[1].sin_addr.s_addr =
inet_addr(SRV_IP_ADRS_2);
                                                      
              
     if(connect(sock_fd,(struct sockaddr
*)&sin[1],sizeof(struct sockaddr_in)) < 0)
     {
       perror("\n 2nd connect Can't connect to
server\n");
       exit(0);
     }


The above code fails at the second connect call giving
the error "Transport endpoint already connected". Can
you please help me with this.

Thanking you
Karthik







--- lks...@li...
wrote:

> Date: Sun, 23 Jan 2005 07:28:30 -0800 (PST)
> From: Anatoly Khusid <tol...@ya...>
> Subject: Re: [Lksctp-developers] Help with
> multihoming
> To: Karthik <kar...@ya...>,
>   SCTP Forum
> <lks...@li...>
> 
> --0-503646642-1106494110=:23201
> Content-Type: text/plain; charset=us-ascii
> 
> >When connecting to the server through the client as
> >sctp_connectx() is not yet available, 
> 
> I would call connect() in a loop for all destination
> (server) IP addresses.
> As soon as one connect() is successful, you can
> stop.
> I dont think there are socket options that will
> allow you to do that.
>  
> 
> Karthik <kar...@ya...> wrote:
> 
> Hello!!
> 
> I am trying to create a multihomed association
> between
> a server and client.
> 
> I have a server program which uses sctp_bindx() and
> binds to 1 or more IP addresses.
> 
> When connecting to the server through the client as
> sctp_connectx() is not yet available, 
> 
> 1. What options do i need to set on the client
> (socket) side such that if one IP fails on the
> server
> side the client takes the other IP address and
> transfers data to it (Its like detecting the IP is
> not
> working anymore and choosing another IP, how do i do
> it ?).
> 
> 2. To perform the above task what are the msg
> notifications i need to capture ?
> 
> Thanks for the help in advance.
> 
> Karthik
> 



		
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