Hello Bill,
Thank you for your response! The output is very similar to our requirement!
Could you please tell me how the data field was populated?
Thanks once again!
Jibran
> On Apr 9, 2017, at 12:57 AM, William Fisher <william.w.fis...@gmail.com>
> wrote:
>
> I'm not completely sure what you want to do. Do you want output like this?
>
> type: PACKET_IN
> xid: 0x00000000
> version: 0x04
> msg:
> buffer_id: NO_BUFFER
> total_len: 0x0052
> in_port: 0x00000002
> in_phy_port: 0x00000002
> metadata: 0x0000000000000000
> reason: APPLY_ACTION
> table_id: 0x00
> cookie: 0x0000000000000000
> match:
> - field: IN_PORT
> value: 0x00000002
> data:
> 000000000001000000000002080045100044847540004006A22C0A0000020A000001B8FD005019B95CE6A15E2B558018003AD69D00000101080A0055E44A0055D89F474554202F20485454502F312E300D0A
> _pkt_decode:
> - field: ETH_DST
> value: '00:00:00:00:00:01'
> - field: ETH_SRC
> value: '00:00:00:00:00:02'
> - field: ETH_TYPE
> value: 0x0800
> - field: IP_DSCP
> value: 0x04
> - field: IP_ECN
> value: 0x00
> - field: IP_PROTO
> value: 0x06
> - field: IPV4_SRC
> value: 10.0.0.2
> - field: IPV4_DST
> value: 10.0.0.1
> - field: NX_IP_TTL
> value: 0x40
> - field: TCP_SRC
> value: 0xB8FD
> - field: TCP_DST
> value: 0x0050
> - field: NX_TCP_FLAGS
> value: 0x0018
> - field: X_PKT_POS
> value: 0x0036
>
>
> You can use the oftr tool to do this. It converts OpenFlow message to YAML
> (or JSON) and back again. Easiest way to install is from launchpad:
> https://launchpad.net/~byllyfish/+archive/ubuntu/oftr
> <https://launchpad.net/~byllyfish/+archive/ubuntu/oftr>
>
> The github repository is https://github.com/byllyfish/oftr
> <https://github.com/byllyfish/oftr>
>
> I translated your example to YAML below, then ran `oftr encode packet_in.yml
> | oftr decode --pkt-decode` to get the above output.
>
> Contents of packet_in.yml:
>
> version: 0x4
> type: PACKET_IN
> xid: 0x0
> msg:
> in_port: 2
> in_phy_port: 2
> buffer_id: 4294967295
> metadata: 0
> cookie: 0
> data:
> 000000000001000000000002080045100044847540004006a22c0a0000020a000001b8fd005019b95ce6a15e2b558018003ad69d00000101080a0055e44a0055d89f474554202f20485454502f312e300d0a
> reason: 1
> table_id: 0
> total_len: 82
>
> -Bill
>
>
> On Sat, Apr 8, 2017 at 7:32 PM, Jibran Ahmed <ahme...@husky.neu.edu
> <mailto:ahme...@husky.neu.edu>> wrote:
> >
> > Hi RYU-DEV team,
> >
> > I would like to decode the following message without using the commands in
> > the RYU Controller. I am failing to do so and was wondering if there was
> > any lib or script available to do the translation for us. Here the message
> > is being transferred to a higher layer application and will do the
> > processing based on message contents. I would ultimately like to have this
> > message in plain text.
> >
> > The message example:
> > version: 0x4 msg_type 0xa xid 0x0
> > OFPPacketIn(buffer_id=4294967295,cookie=0,data='\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x02\x08\x00E\x10\x00D\x84u@\x00@\x06\xa2,\n\x00\x00\x02\n\x00\x00\x01\xb8\xfd\x00P\x19\xb9\\\xe6\xa1^+U\x80\x18\x00:\xd6\x9d\x00\x00\x01\x01\x08\n\x00U\xe4J\x00U\xd8\x9fGET
> > / HTTP/1.0\r\n',match=OFPMatch(oxm_fields={'in_port':
> > 2}),reason=1,table_id=0,total_len=82)
> >
> > I would NOT like to use the following in the controller:
> > self.pcap_writer = pcaplib.Writer(open('mypcap.pcap', 'wb'))
> > self.pcap_writer.write_pkt(ev.msg.data)
> >
> > When I use this library (pcaplib) in my python script in the application
> > server, I am failing to decode it appropriately,
> >
> > Could you advice! Thanks in advance!
> >
> > Regards,
> > Jibran Ahmed
> > Northeastern University, Boston MA
> > Telecommunications Department
> >
> >
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