From: Vlad Yasevich <vyasevich@gmail.com>
To: linux-sctp@vger.kernel.org
Subject: Re: one-to-many question
Date: Thu, 15 Aug 2013 18:50:51 +0000 [thread overview]
Message-ID: <520D230B.1040002@gmail.com> (raw)
In-Reply-To: <520CAC87.5020402@skyge.com>
On 08/15/2013 11:13 AM, Michael Tuexen wrote:
> On Aug 15, 2013, at 1:42 PM, Daniel Borkmann <dborkman@redhat.com> wrote:
>
>> On 08/15/2013 12:25 PM, xiong wei wrote:
>>> Hi, experts
>>>
>>> For one-to-many mode. Suppose I have a socket which contain several
>>> associations in it. that means there are several clients connect with
>>> server.
>>>
>>> If I use sendmsg(...) function to send msg from server, How does sctp
>>> identify which association will receive the data? Does all clients will
>>> receive the msg?
>>>
>>> And, Does sctp provide a way for server to send msg to all associations
>>> in one syscall ?
>>
>> Neil Horman wrote:
>>
>> The receiving association is specified in either the msg_name field of the
> Can you specify on Linux an sctp_assoc_t? Or would you specify one of the
> remote IP addresses? Specifying an sctp_assoc_t would be Linux specific,
> I guess. At least this isn't covered by
> http://tools.ietf.org/html/rfc6458
> as far as I know.
msg_name would contain the address, not the association id.
-vlad
>
> Best regards
> Michael
>> message header or the association id field of the sndrcv_info cmsg header in the
>> datagram. IIRC there is no was to send to all associations at once in a single
>> syscall, unless you want to marshall up all the data and pass it down via the
>> sendmmsg syscall, which I don't think lksctp-tools supports yet (though that
>> would be a nice feature).
>> Neil
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next prev parent reply other threads:[~2013-08-15 18:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-15 10:25 one-to-many question xiong wei
2013-08-15 11:42 ` Daniel Borkmann
2013-08-15 11:42 ` Michael Tuexen
2013-08-15 15:13 ` Michael Tuexen
2013-08-15 17:28 ` Neil Horman
2013-08-15 18:50 ` Vlad Yasevich [this message]
2013-08-15 19:02 ` Michael Tuexen
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