Forum Discussion
Jonathan_Landis
Nimbostratus
NimbostratusMultiple message-header fields with the same field-name
The following rule logs the "Cookie" header of http requests:
when HTTP_REQUEST {
set ch [HTTP::header "Cookie"]
if {$ch != ""} {log local0. "$ch"} else {log local0. "no cookie"}
}
If there are multiple cookie headers, it returns the last one. Is this a bug or a feature?
- The HTTP::header command will, as you found out, pull the last header with the given name.
You might want to take a look at the HTTP::cookie command for accessing cookies
http://devcentral.f5.com/wiki/default.aspx/iRules/HTTP__cookie.html
Click here
-Joe 
Jonathan_LandisThanks, Joe! Sometimes there are multiple "Accept" headers as well. Is there a way to collect all of them?- According to RFC 2616 there should be one Accept header, with a list of the acceptable data types in it. Click here
This can be split up into seperate variables as needed with the list commands native to TCL once you pull the header value itself.
-Colin - Jonathan_LandisThe RFC does not say there should be only one "Accept" header. See the last paragraph in section 4.2.
