h1. HTTP protocol

!http_parameters.gif!

HTTP protocol is used for HLR as follows.
In case if *Smartswitch* decides that it needs to forward [[HLR dipping]] or [[LNP/MNP dipping]] to provider, it:

# forms HTTP query according to configured *URL* pattern.
  A ${DESTINATION_NUMBER} variable is passed to pattern.
  It contains *destination number*.
# Sends HTTP query to specified address
# Waits for HTTP response 200 ОК.
  Or cancels query by timeout in case if provider doesn't return anything.
# Analyzes response contents, extracts payload from it according to configured patterns (tabs *MCC*, *MNC*, *IMSI*)
# Attempt and response pass through [[HLR billing]] or [[LNP/MNP billing]] and are saved in [[Call detail report|Detail report]].

h2. Testing

You can use *Test* tool to check that settings are connect:

!http_test.gif!
 
# Enter destination number.
# Get *response* and its analysis result (fields *MCC* and *MNC*):

!http_test2.gif!

*IMSI* field is optional.
It's given only by certain providers.

[[Протокол HTTP|Русский перевод]]