Topic
  • 7 replies
  • Latest Post - ‏2013-10-31T18:50:21Z by Emanuel Medina
SystemAdmin
SystemAdmin
3903 Posts

Pinned topic ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

‏2010-01-20T16:07:14Z |
Hello
I have this error in http_plugin.log:

Wed Jan 20 12:02:36 2010 00010da8 00001314 - ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value: 0xffffffff

It repeats frequently but in a random fashion.

Extract from access_log file shows 304 codes many times indicating that the web server returns the content has no modifications. Eg:

206.48.141.245 - - 20/Jan/2010:12:54:32 -0600 "GET /wps/wcm/resources/file/eb743f403aa50b5/certifica.js HTTP/1.1" 304

I tried to recreate the error with a java program but i couldn´t send http requests with wrong values in If-Modified-Since header.

Is this a problem related to older browsers that send http requests with bad headers?
Is this a problem related to http server or plugin configuration?

Thanks in advance for your suggestions.
Patrick
Updated on 2012-07-01T13:24:19Z at 2012-07-01T13:24:19Z by lukewang
  • watsbm
    watsbm
    3 Posts

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2010-02-02T09:48:02Z  
    Hi Patrick,

    I also have an identical error. Unfortunately no one else seems to have replied with any info for you. I'll have a further look into it myself and see if I can find something out.

    Cheers B.
  • watsbm
    watsbm
    3 Posts

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2010-02-02T09:59:35Z  
    Hi Patrick,

    I also have an identical error. Unfortunately no one else seems to have replied with any info for you. I'll have a further look into it myself and see if I can find something out.

    Cheers B.
  • watsbm
    watsbm
    3 Posts

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2010-02-02T10:01:23Z  
    Hi Patrick,

    I also have an identical error. Unfortunately no one else seems to have replied with any info for you. I'll have a further look into it myself and see if I can find something out.

    Cheers B.
  • SystemAdmin
    SystemAdmin
    3903 Posts

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2010-02-02T13:59:43Z  
    • watsbm
    • ‏2010-02-02T10:01:23Z
    Hi Patrick,

    I also have an identical error. Unfortunately no one else seems to have replied with any info for you. I'll have a further look into it myself and see if I can find something out.

    Cheers B.
    Try capturing the incoming if-modified-since header (e.g. in Apache, just add %{if-modified-since}i to your LogFormat), and it it's not obviously invalid, open a PMR.
  • SystemAdmin
    SystemAdmin
    3903 Posts

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2010-02-04T19:14:48Z  
    Try capturing the incoming if-modified-since header (e.g. in Apache, just add %{if-modified-since}i to your LogFormat), and it it's not obviously invalid, open a PMR.
    Thank you guys. Open a PMR is not an option due to backlevel versions involved.
  • lukewang
    lukewang
    1 Post

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2012-07-01T13:24:19Z  
    I get the same error for 7.0.0. Is there any solution for this issue? Thanks.
  • Emanuel Medina
    Emanuel Medina
    1 Post

    Re: ERROR: ESI: getResponseFromCache: invalid If-Modified-Since header value...

    ‏2013-10-31T18:50:21Z  

    In the plugin properties, click on Custom properties 

    Add an entry:

    name =  ESICacheidFull 

    value = false

     

    Save, regenerate and propagate the plugin, then  do restart or graceful command on the  IHS 

     

    Good look.