[Click] ipreassembler problem

[Eddie Kohler]

Marcin,

Apologies for not getting back to you earlier.  This may be a bug.  Can you 
please post a copy of your in.dmp file somewhere that I can download it to check.

Eddie


Marcin wrote:
> At first, thanks for your advices. One more thing: your version works, 
> except that reassembled packet in output trace lacks 22 last bytes of 
> the payload. Any idea what could be the problem?
> 
> Regards,
> Marcin
> 
> Eddie Kohler pisze:
>> IPReassembler requires the IP header annotation.
>>
>> The easiest way to make sure that a FromDump element produces IP 
>> packets is with the FORCE_IP argument.
>>
>> FromDump(in.dmp, STOP true, FORCE_IP true) -> IPReassembler -> 
>> ToDump(out.dmp)
>>
>> THis will work for many different types of pcap trace files, not just 
>> Ethernet encapsulation.
>>
>> Note that reassembled packets will have no MAC headers at all.  The 
>> dump will get very confused if you mix no-MAC with MAC packets.  You 
>> probably want this.
>>
>> FromDump(in.dmp, STOP true, FORCE_IP true)
>>    -> StripToNetworkHeader
>>    -> IPReassembler
>>    -> ToDump(out.dmp, ENCAP IP)
>>
>> Eddie
>>
>>
>> Marcin wrote:
>>> Dear All,
>>>  
>>> I need to take all fragmented packets from the trace file reassemble 
>>> them and output to another trace file. I tried to do it this way:
>>>  
>>> FromDump(in.dmp, STOP true) -> IPReassembler -> ToDump(out.dmp)"
>>>
>>> I receive this error message:
>>>  
>>> click: ../elements/ip/ipreassembler.cc:225: virtual Packet* 
>>> IPReassembler::simple_action(Packet*): Assertion `iph' failed.
>>>  
>>> Any tips would be appreciated.
>>>  
>>> Regards,
>>> Marcin
>>>
>>>
>>>
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>>
>>
> 
> 
> 
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