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. 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
