Forum Discussion
asieber_102433
Nimbostratus
Nimbostratuslog connections, that exceed maximum header size
Hi,
from time to time we experience some memory issues on our apache webservers.
The apache processes use more and more memory (4 times more than usual).
Everytim...
hoolio
Cirrostratus
CirrostratusAnd one more update which logs long URIs, headers or the full request if the full request headers are over X bytes.
when HTTP_REQUEST {
Check the total HTTP headers size
if {[string length [HTTP::request]] > 10000 }{
Check if the URI is very long
if {[string length [HTTP::uri]] > 1000}{
log local0. "Uri is long. Length [string length [HTTP::uri]], URI: [HTTP::uri]"
Exit this event from this iRule
return
}
Loop through the headers by name
foreach header {[HTTP::header names]} {
Check for a long header value
if {[string length [HTTP::header value $header]] > 1000 } {
log local0. "Header is long. Header Name: $header,\
Length: [string length [HTTP::header value $header]], Value: [HTTP::header value $header]"
Exit this event from this iRule
return
}
}
If we are still here the request was large, but not the URI or any single header.
Log the first 1k bytes of the full request
log local0. "Request is long: [HTTP::request]"
}
}
Aaron
