For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

neeeewbie's avatar
neeeewbie
Icon for MVP rankMVP
Feb 28, 2022

what is the length of RFC content-length ?

Hi guys I need your help!!

I need check RFC HTTP content-length

but I can't found documents,,, so, Please let me know if you know that 

thank you !

application delivery

5 Replies

    • neeeewbie's avatar
      neeeewbie
      Icon for MVP rankMVP
      Feb 28, 2022

      thank you for share information

      I checked "Invalid action:0x10a010 Server sends too much data. serverside " this log 

      and checked relate documents on f5 

      but I don't know RFC contents length ,, is this define the length ? or rule ? 

      • DavisLi's avatar
        DavisLi
        Ret. Employee
        Feb 28, 2022

        Are you using Performance L4 VS? If yes, remove HTTP Profile. 

        If not, the message may indicate that the response received from the back-end server is not RFC compliant. You should first and foremost modify and correct the back-end server behavior. There is a workaround to change this while you wait for your backend to comply to the RFC.

        Impact of workaround: The impact of the suggested workaround depends on the specific environment. F5 recommends testing any such changes during a maintenance window with consideration to the possible impact on your specific environment. A testing environment would be ideal.

        1. Log in to the TMOS Shell (tmsh) by entering the following command: tmsh
        2. To enable the tmm.http.passthru.invalid_content_length database key, enter the following command: modify /sys db tmm.http.passthru.invalid_content_length value enable

        https://support.f5.com/csp/article/K42151600 Error Message: 011f0016:3: http_process_state_prepend - Invalid action:<code> Server sends too much data