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
The github repository is 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> 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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