Forum Discussion
NimbostratusiRule w/classes corrupting class files.
I have an interesting problem that hopefully has a "quick" fix that I have been unable to find.
I am currently using the LTM Maintanece iRule that has been out here for quite some time. It works perfectly but unreliably for how I have it configured.
I am running LTM 9.4.6.
Each time the iRule is invoked, it calls the class files to load the html, and image classes. In the HTML class, it appears that where I have an "/" to escape a qutation mark ' " ' the LTM is modifying the class file and is adding another slash in on each request.
This is an example line of a fresh html class file:
And here is what it looks like after it is called from the iRule:
Has anyone seen this or know how I could troubleshoot what's going on? Thanks!! Chris14 Replies
Paul_73795Thought I would add an update, the bug (bug291584) has been reported for the above issue and is called "String Class value with escaped quote adds more backslashes on b save".
The workaround is to save the object class as a string in the main configuration file instead of in an external file.
hoolioCirrostratus
Hi Paul,
It looks like an engineering hotfix may have been coded for ID 291584 against 9.4.x, but I don't see that the fix has been included in more recent builds. Did you ask for an engineering hotfix for this? Or did F5 Support suggest a fix would be included in an upcoming cumulative hotfix? Can you reply with your case number and I'll check into this?
Thanks, Aaron
Joe_Erchul_4263Gang,I'm having the same difficulty with embedding a large graphic file into a class. I'm receiving the "Max string size exceeded during update of attribute:data type:class_string_item max:65520" error when creating it as a Data Group or within the bigip.conf file as a file, and have not figured out the format of the class variable when defining this as a string in the bigip.conf. I copied and pasted the contents of my base64-encoded file into the bigip.conf, but it's not happy with the format. Here's a snippet of my attempt at a class definition:
class Image_head {
type string
"image_head.bmp" := "Qk0WGwEAAAAAADYEAAAoAAAABgMAAFwAAAABAAgAAAAAAOAWAQDEDgAAxA4AAAAAAAAAAAAA////APn17wDy7N8A7OLPAOXZvwDfz68A2cWfANK8jwDMsn8AxqlwAL+gYAC5llAAs4xAAK
And here's the resulting error when I do a b verify load:
Reading configuration from /config/bigip.conf.
BIGpipe parsing error (/config/bigip.conf Line 1120):
012e0017:3: The requested item (:= ,) is invalid ( | show | list | help) for 'class ip item'
Any pearls of wisdom as to the format of this class definition?
Thanks in advance.
Joe
By the way, I'm running version 10.2, Build 1789.
- hoolioI guess one entry in a datagroup cannot be more than 65520 bytes long? You could try breaking up the image contents into separate datagroup entries and then concatenate them using class element:
http://devcentral.f5.com/wiki/default.aspx/iRules/class
Aaron
