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Snl's avatar
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Sep 11, 2017

java application issue with ASM



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?


3 Replies

  • nathe's avatar
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    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
    Icon for Cirrostratus rankCirrostratus

    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?


  • 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 ?