On Aug 15, 2013, at 8:50 PM, Vlad Yasevich <vyasevich@xxxxxxxxx> wrote: > On 08/15/2013 11:13 AM, Michael Tuexen wrote: >> On Aug 15, 2013, at 1:42 PM, Daniel Borkmann <dborkman@xxxxxxxxxx> 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. Thanks for the clarification. Makes perfect sense. We do the same in FreeBSD... Best regards Michael > > -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 >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-sctp" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
