Modify/create packets with Trema using Ruby

[sp kexagi]

Hi,
I am trying to generate arp packets and send them out using Ruby with Trema. I have tried Racket but there seems to be some sort of incompatibility with other libraries/ruby versions. Is there a way to convert packets generated with Pio to Trema PacketIn objects? Alternatively, I would like to modify the contents of an arp packet, although there doesn't seem to be a way to do that using any Trema actions. Any suggestions would be most welcome.

Thank you,
Spiros

[eishun kondo]

Hi Spiros

Sorry,  I'm not good at English.

how do you want to convert?
for example: change the value of  "sender_protocol_address"  field of ARP packet.

Regards,
Eishun Kondoh.

[sp kexagi]

I actually found a way to create an ARP reply and send it out using

create_arp_reply_from()

found here: https://github.com/stereocat/training/blob/master/simple-firewall/router-utils.rb

Thanks for replying

[eishun kondo]

Hi.

trema / pio is much simpler than it. 

For ARP packet generate, please refer to the following URL.

https://github.com/trema/pio/blob/develop/examples/arp_new.rb

Regards,

Eishun Kondoh.

2014年7月24日木曜日、sp kexagi<spke...@gmail.com>さんは書きました:

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