Forum Discussion

EricRs_201906's avatar
EricRs_201906
Icon for Nimbostratus rankNimbostratus
May 22, 2015

iRule: Adjust idle timeout for 1 particular call

Hello,   I had a few questions if anyone has implemented or tried this I know there's a wiki link for it, link, However I wanted to know if the sample request would open the idle time out for ALL r...
  • Hannes_Rapp_162's avatar
    Hannes_Rapp_162
    May 22, 2015

    The use of "else" clause is good for visibility reasons. Admin does not have to check the settings inside a TCP profile to know what the TO value is for all other requests.

    For efficiency, I recommend using a comparison against 

    [string tolower[HTTP::path]] starts_with
    , instead of your current 
    [HTTP::uri] starts_with
    statement.

Hannes_Rapp_162's avatar
Hannes_Rapp_162
Icon for Nacreous rankNacreous

The use of "else" clause is good for visibility reasons. Admin does not have to check the settings inside a TCP profile to know what the TO value is for all other requests.

For efficiency, I recommend using a comparison against 

[string tolower[HTTP::path]] starts_with
, instead of your current 
[HTTP::uri] starts_with
statement.

Hannes_Rapp_162's avatar
Hannes_Rapp_162
Icon for Nacreous rankNacreous
May 22, 2015
Also note that your iRule only has the expected effect, if by requesting page "/portal*" there are no requests made to other pages served via the same VIP (e.g JPG, CSS, PNG etc.. files in "/static_files"). Since HTTP1.1 a single TCP connection is used for multiple GET requests. Therefore, if any content on page is in another parent directory, the IDLE timeout value will be repeatedly overwritten and this affects performance negatively. What's more, the actual timeout value on /portal page can still be 300 seconds (assuming the last request was made to /static_files/mylogo.png).