http::retry question

I did some more tests to test http::retry using the following rule. I tested the same request that failed on my original rule. From the logging, I see the first request always went through but the retry request always get a "Bad Request" response. I looked at the http::retry wiki page again and saw this - "Resends a request to a server. The request header must be well-formed and complete." So, I think that the original request's headers are likely the cause of the failure, although they looked fine to me. I just wonder why this command is strict on the request headers if all it supposed to do is resending a request.

 

 

when CLIENT_ACCEPTED {

 

set the flag to control lookup

 

set lookup 0

 

}

 

 

when HTTP_REQUEST {

 

save the original request for retry later

 

 

if { $lookup == 0 } {

 

set original_request [HTTP::request]

 

set original_payload [HTTP::payload]

 

 

log local0. "Original Request"

 

log local0. "Original Request = $original_request"

 

log local0. "Original Payload = $original_payload"

 

} else {

 

log local0. "Retry Request"

 

set retry_request [HTTP::request]

 

set retry_payload [HTTP::payload]

 

log local0. "Retry request = $retry_request"

 

log local0. "Retry payload = $retry_payload"

 

}

 

pool NEXTGEN_POOLA

 

}

 

 

when HTTP_RESPONSE {

 

collect first response (from lookup server) only

 

if { $lookup == 0} {

 

log local0. "Received First Response"

 

} else {

 

log local0. "Received Retry Response"

 

}

 

HTTP::collect 1

 

}

 

 

when HTTP_RESPONSE_DATA {

 

set payload [HTTP::payload]

 

if { $lookup == 0 } {

 

log local0. "First Response Payload = $payload"

 

retry the request again.

 

set lookup 1

 

pool NEXTGEN_POOLA

 

HTTP::retry $original_request

 

} else {

 

log local0. "Retry Response Payload = $payload"

 

}

 

}