Hi Iwase, Thank you so much. It solved my problem. I have one more concern. Is that RYU get the whole packet, or the first few bytes of the packet. If that is not true, what are the options we have to provide so that RYU controller get the whole packet from the switch.
Thanks & Regards, Ramana On Fri, Dec 18, 2015 at 10:45 AM, Yusuke Iwase <[email protected]> wrote: > Hi Ramana, > > In Ryu, TCP payload will be at the last element of pkt.protocols if the > payload exists. > > e.g.) > If the payload exists: > pkt.protocols = [ethernet(...), ipv4(...), tcp(...), 'payload_data'] > You can access the payload like "pkt.protocols[-1]". > > If the payload does not exist: > pkt.protocols = [ethernet(...), ipv4(...), tcp(...)] > > Thanks, > Iwase > > On 2015年12月18日 12:58, Ramana Reddy wrote: > > Thanks for your reply. The library pkt.get_protocol(tcp. > > tcp) gives the entire packet including the header. I could not see any > api to get only tcp payload. In pox, tcp.payload gives the payload without > the header. Any such api in ryu. > > > > Thanks, > > Ramana > > > > On 18 Dec 2015 5:26 am, "Yusuke Iwase" <[email protected] <mailto: > [email protected]>> wrote: > > > > Hi Ramana, > > > > Please refer to this Ryu-Book page for the usage of the packet > library. > > http://osrg.github.io/ryu-book/en/html/packet_lib.html > > > > e.g.) > > tcp_packet = pkt.get_protocol(tcp.tcp) > > if tcp_packet: > > print(tcp_packet) > > > > Thanks, > > Iwase > > > > On 2015年12月18日 02:16, Ramana Reddy wrote: > > > What I need basically is: > > > > > > msg = ev.msg > > > pkt = packet.Packet(msg.data) > > > > > > from 'pkt' we will get all ethernet, IP and TCP headers using > pkt.get_protocol(). But I would like to know > > > how to extract the payload of the packet after stripping of all > these headers. > > > > > > Regards, > > > Ramana > > > > > > > > > > > > On Thu, Dec 17, 2015 at 10:38 PM, Ramana Reddy < > [email protected] <mailto:[email protected]> <mailto: > [email protected] <mailto:[email protected]>>> wrote: > > > > > > Hi All, > > > > > > I would like to know the API to extract the payload of a tcp > packet. > > > > > > > > > Thanks & Regards, > > > Ramana > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > > > _______________________________________________ > > > Ryu-devel mailing list > > > [email protected] <mailto: > [email protected]> > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > _______________________________________________ > > Ryu-devel mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > >
------------------------------------------------------------------------------
_______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
