- From: Michael Tüxen <Michael.Tuexen AT micmac.franken.de>
- To: Prasanth Pillai <prasanth1103 AT gmail.com>
- Cc: sctp-discussion AT sctp.de, vinod.singh.ext AT nsn.com
- Subject: Re: [SCTP-Discussion] multihoming problem
- Date: Wed, 18 Aug 2010 15:50:45 +0200
- List-archive: <http://lists.franken.de/pipermail/sctp-discussion>
- List-id: SCTP Discussions <sctp-discussion.sctp.de>
On Aug 18, 2010, at 2:59 PM, Prasanth Pillai wrote:
>
Hi all,
>
>
I am planning to use multihoming feature in my sctp server. Both my server
>
and client
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machines are configured with multiple ip addresses on different interfaces.
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I am able to
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see multiple ip addresses getting passed in init ack through tcpdump. The
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data flows
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fine through one of the interaces, untill the interface goes down (I
>
removed the network
>
cable manually). When the interface goes down , the server is not able to
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receive the
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data through the other interface. I am able to see the data coming to the
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other interface
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ip in tcpdump, as soon as the interface is down. But my server is not able
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to receive it.
>
>
server code (system calls only)
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socket (AF_INET, SOCK_STREAM, IPPROTO_SCTP)
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>
bind(listen_sctp_fd, (struct sockaddr *) &sctpser, sizeof (sctpser))) //
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server first interface ip
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sctp_bindx(listen_sctp_fd, (struct sockaddr *) addresses, count,
>
SCTP_BINDX_ADD_ADDR)) // second interface ip
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listen(listen_sctp_fd, 5)
>
>
id = accept(listen_sctp_fd, (struct sockaddr *) &peer_info, (socklen_t *)
>
& peer_info_len))
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sctp_recvmsg( client_fd, (void *) buffer, sizeof (buffer), (struct sockaddr
>
*) NULL, 0, &srInfo, &flags))
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client code (system calls only)
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socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
>
>
sctp_connectx(sock_fd, (struct sockaddr *) addresses, 2);
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>
sctp_sendmsg(sock_fd, (void *) buffer, strlen(buffer) + 1, NULL, 0, 0, 0,
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0, 0, 0);
>
>
Can someone help me, why my code is not working? Is there anything missing
>
in my code?
>
>
>
Waiting for your valuable comments.
>
Prasanth
Hi Prasanth,
what OS are you using? What SCTP implementation are you using?
Best regards
Michael
>
>
>
>
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