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Snl's avatar
Snl
Icon for Cirrostratus rankCirrostratus
Sep 11, 2017

java application issue with ASM

Folks

 

i am facing issue with application which use java client over F5 ASM but some reasons were are getting 501 response towards client does anybody face similar issue if i remove the asm policy application works fine, what i observed is multiple cookie has been inserted by ASM then application is not working any thoughts?

 

application delivery
ASM Advanced WAF
LTM
  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Sep 12, 2017

    ASM only allows GET, HEAD and POST request methods. 501 Not Implemented suggests the client is sending a request with a different method. Can you confirm this? If you do a packet trace, httpwatch/fiddler etc. do you see any methods being used other than the above?

     

  • Snl's avatar
    Snl
    Icon for Cirrostratus rankCirrostratus
    Sep 12, 2017

    Hi Nathan

     

    Thanks for your comments , I have checked from tcp dump java client doing POST request only also I have opened TAC case as per TAC application is not supporting the request when multiple cookies exist in the response ( ASM inserting additional cookie along with server cookie) which cause client sending reset to LTM/ASM when i remove the ASM policy in LTM observed only server cookie exist and application working fine without any issue.

     

    any thoughts on this?

     

  • Marcus_Poon's avatar
    Marcus_Poon
    Icon for Nimbostratus rankNimbostratus
    Nov 11, 2020

    I have faced the similar issue when running program version is Java on Azul Zulu JRE version 1.8.0_172 at Windows 10 or Windows Server 2016.

    Does anyone know how to fix it ?

    Thanks.