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Mike_Sullivan_2's avatar
Mike_Sullivan_2
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Dec 10, 2014

iRule using TCP::collect and TCP::payload to fix blanks (spaces) in HTTP request

Hi I have a request to help fix mal-formed links. After some research, it looks like an irule around the CLIENT_ACCEPTED and CLIENT_DATA events utilizing the TCP commands is the way to fix it. I...
application delivery
devops
iRules
LTM
  • nitass_89166's avatar
    nitass_89166
    Dec 11, 2014

    it seems \r\n\r\n is removed when using concat.

    can you try this? it looks okay here.

    TCP::payload replace 0 0 "[concat $mynewreq $mybal]\r\n\r\n"
Mike_Sullivan_2's avatar
Mike_Sullivan_2
Icon for Nimbostratus rankNimbostratus
Dec 11, 2014

have you tried it without \r\n\r\n?

 

Yes, it didn't work w/out the tacked on cd/lf, good thought though.

 

what was the problem if using HTTP_REQUEST?

 

That is the key! If the request gets up to the ASM or even a VIP w/ a http profile, we already have a protocol violation and I couldn't find a way to fit it. The HTTP:: attributes could not be modified so far as I can tell. Trying to find other examples on devcentral led me to this approach.

 

Thanks Nitass!

 

Cheers, Mike