Redirect HTTP based on client browser

patricko0317 · August 2011

Posted by patricko0317

I have a need for an Aflex script. I need it to redirect the browser to a different page based on the browser the client is using. If it is IE 9, I need it redirected. Will the following script accomplish this? Also, can I add this to the script you gave me for logging?

when HTTP_REQUEST {
if { [HTTP::header "User-Agent"] contains "MSIE 9" } {
HTTP::redirect "redirectionpage.com"
}
}

JackofallTrades · August 2011

Posted by JackofallTrades

Below will do the trick.

You also want to order the User-Agent headers with Mozzila being the last. Most User-Agents will have Mozilla in it.

if { [HTTP::header "User-Agent"] contains "MSIE 9" } {
HTTP::redirect "redirectionpage.com"
} elseif {[HTTP::header "User-Agent"] contains "Mozzila" } {
HTTP::redirect "redirectionpage2.com"
}

log local0. "The User-Agent is: [HTTP::header "User-Agent"]"
}

Hope this helps.

[Deleted User] · August 2011

Posted by ddesmidt

Patrick,
First yes, you're aFleX is just good

Now about incorporating this one in the centralized web server logging aFleX: www.a10support.com/adc/index.php/forum/7...server-log-on-ax#32, that's also possible.

There are 2 ways of doing it.
. If you're using 2.6, you can attach multiple aFleX rules to 1 VIP:port => create 2 aFleX and associate both aFleX to the VIP:Port.

. If you are using 2.4.3, you have to combine these 2 aFleX in 1 aFleX. For that, simply add the "IF IE9" at the beginning of your centralized aFleX.

Code:

when HTTP_REQUEST {
if { [HTTP::header "User-Agent"] contains "MSIE 9" } {
HTTP::redirect "redirectionpage.com"
}
# Set strings for the "client side"
set time_client_request [clock seconds]
set clicks_client_request [clock clicks -milliseconds]
...

Now keep in mind doing though you won't get any log for these requests (since the log action is done in the "HTTP_Response event" and there is no server response (AX does the response).
If you want the log for these too, here is what I suggest (full aFleX below):

Code:

when HTTP_REQUEST {
# Set strings for the "client side"
set time_client_request [clock seconds]
set clicks_client_request [clock clicks -milliseconds]
set date_time_request [clock format $time_client_request -format {%Y-%m-%d %H:%M:%S} ]
set c_ip [IP::client_addr]
set cs_uri_stem [HTTP::host][HTTP::uri]
set cs_method [HTTP::method]
set s_ip [IP::local_addr]
set s_port [TCP::local_port]
set host [HTTP::host]
if {[HTTP::query] equals ""} {
set cs_uri_query [HTTP::query]
} else { set cs_uri_query "-"
}
if {[HTTP::header exists Content-Length]} {
set cs_bytes [HTTP::header Content-Length]
} else { set cs_bytes "-"
}
if {[HTTP::header exists Referer]} {
set cs_Referer [HTTP::header "Referer"]
} else { set cs_Referer "-"
}
set cs_UserAgent [string map {" " "+"} [HTTP::header "User-Agent"]]

if { [HTTP::header "User-Agent"] contains "MSIE 9" } {
HTTP::redirect "redirectionpage.com"
set log_str "$date_time_request $c_ip $s_ip $s_port $cs_method $cs_uri_stem $cs_uri_query $sc_status $sc_bytes $cs_bytes $final_time_taken $cs_UserAgent $cs_Referer"
# write to syslog with Debug level
log local0.7 $log_str
# write to AX log (turn this for troubleshooting only, as you may have a lot of requests / second)
# log $log_str
}
}

when HTTP_RESPONSE {
# Set strings for the "server side"
set clicks_server_response [clock clicks -milliseconds]
set sc_status [HTTP::status]
if {[HTTP::header exists Content-Length]} {
set sc_bytes [HTTP::header Content-Length]
} else { set sc_bytes "-"
}

# Correct TCL Bug with floating point values
set time_taken [expr $clicks_server_response - $clicks_client_request ]
if {$time_taken < 10} {
set final_time_taken [string range "0.00$time_taken" 0 4]
} elseif { $time_taken < 100 } {
set final_time_taken [string range "0.0$time_taken" 0 4]
} elseif { $time_taken < 1000} {
set final_time_taken [string range "0.$time_taken" 0 4]
} else {
set final_time_taken "[string index $time_taken 0].[string range $time_taken 1 3 ]"
}

# Format strings for logging
set log_str "$date_time_request $c_ip $s_ip $s_port $cs_method $cs_uri_stem $cs_uri_query $sc_status $sc_bytes $cs_bytes $final_time_taken $cs_UserAgent $cs_Referer"

# write to syslog with Debug level
log local0.7 $log_str
# write to AX log (turn this for troubleshooting only, as you may have a lot of requests / second)
# log $log_str
}

ivanm@a10networks.com · August 2011

Posted by ivanm@a10networks.com

Hi,

I´m using this one:

when HTTP_REQUEST {

if { ( (not ([HTTP::header User-Agent] contains "iPad") and ([HTTP::header User-Agent] contains "Mobile") or ([HTTP::header User-Agent] contains "Profile")) and ([HTTP::host] equals "mtv.uol.com.br") and ( ([HTTP::uri] equals "/celular") or ([HTTP::uri] equals "/")) ) or ( ([HTTP::cookie exists "device"]) and ([HTTP::host] equals "mtv.uol.com.br") )} {
HTTP::redirect "m.mtv.com.br"
}

}

Redirect HTTP based on client browser

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