Sir,
Thank you for the response. I am writing packets exactly like this and it is
still truncating packets that are > 62 bytes.
class SimpleSwitch13(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
def __init__(self, *args, **kwargs):
super(SimpleSwitch13, self).__init__(*args, **kwargs)
self.mac_to_port = {}
# Create pcaplib.Writer instance with a file object
# for the PCAP file
self.pcap_writer = pcaplib.Writer(open('mypcap.pcap', 'wb'))
...
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
# Dump the packet data into PCAP file
self.pcap_writer.write_pkt(ev.msg.data)
> On May 3, 2018, at 1:20 AM, TJ OConnor <tj_ocon...@me.com> wrote:
>
> Hello,
>
> I have an issue where RYU pcaplib.Writer() isn’t writing full packets.
>
> Ive created a RYU PCAP Writer Object as described here.
> https://github.com/osrg/ryu/blob/master/ryu/lib/pcaplib.py
> <https://github.com/osrg/ryu/blob/master/ryu/lib/pcaplib.py>
> self.pcap_writer = pcaplib.Writer(open('mypcap.pcap', 'wb’))
>
> However, when I tcpdump the resulting pcap, it shows that the packets are all
> truncated at 62 bytes.
> I’ve adjusted the snaplen=4294967295 and the issue is still the same.
>
> Any suggestions would be greatly appreciated.
>
> tcpdump -r mypcap.pcap …
>
> 23:05:39.948667 IP truncated-ip - 1 bytes missing! ubuntu.65277 >
> amazonaws.com.https: Flags [P.], seq 317:380, ack 253, win 4096, options
> [nop,nop,TS val 800045157 ecr 739067198], length 63
> 23:05:39.995833 IP truncated-ip - 1 bytes missing! amazonaws.com.https >
> ubuntu.65277: Flags [P.], seq 253:316, ack 380, win 1136, options [nop,nop,TS
> val 739069697 ecr 800045157], length 63
>
>
>
>
>
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Ryu-devel mailing list
Ryu-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ryu-devel
