Technical Integration Guide - Afnic

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TECHNICAL INTEGRATION GUIDE – February 25th, 2013 16• the rgp-1.0 extension in order to restore a domain name• and possibly the secDNS-1.1 extension if you want to manageDNSSEC.A strict check is made to ensure that the EPP extensions chosen by thecustomer at the time of authentication are among the EPP extensionsannounced by the server;The presence of any other "exotic" extension (not announced by the serverin the ) will result in a failed authentication, as will the absenceof any mandatory extension.The combination of these two tests imposes you to authenticate with one ofthe following combinations:domain-1.0, contact-1.0, frnic-1.2, rgp-1.0ordomain-1.0, contact-1.0, frnic-1.2, rgp-1.0, secDNS-1.13.3.3.3.The commandAs already indicated, a client that wishes to have a clean EPP sessionmanagement must send an end of session command () (and,ideally, wait for a server answer) before cutting the TCP connection with theserver. Even though the server can detect « wild » EPP client cut-offs, thesetypes may not free the limited ressources allocated to each registrar quicklyenough.To be totally clear, if we only authorize, for each registrar, X number ofsimultaneous sessions with the EPP server (cf §3.1 Configuration andparameters), and that all of these sessions are all used at the same time,disconnecting a client without a phase could have for consequencethat the cut-off will not be taken immediatly into account. This will thenblock any new connections returning the code 2502 until the system detectsand manages this cut-off. command example sent by a client:C:C:C: C: C: une-reference-client-par-exempleC: C:Association Française pour le Nommage Internet en Coopération | www.afnic.fr | contact@afnic.frTwitter : @AFNIC | Facebook : afnic.frTechnical Integration Guide- 16 -November 2009
TECHNICAL INTEGRATION GUIDE – February 25th, 2013 173.3.4. Interrogation commandsEven though we detail the commands for the different types of objects (contactand domain) in the following chapters, here is a brief outline of what commandsare available and the use they have been intended to.3.3.4.1.The commandThis command enables to check if an object is available. Considering ourinternal way of managing « contacts », namely, an internal algorythm thatdetermines the identifier (Nic-handle) that will be associated to a « contact »object, the command can only be used on « domain » objects.Before any domain creation, it is strongly recommended to checkavailability. It is strongly recommended to use the DAS service (DomainAvailability System) IRIS D-CHK. Cf § 6. DAS.The DAS service is to be preferred to the EPP command.3.3.4.2.The commandWhen you wish to retrieve information on a domain name or a contact forwhich you know the identifier, you need to use this command.A registrar can only retrieve information on contacts linked to objects in hisportfolio. For domain names it is possible, if the associated password( element) is known, to retrieve information on a domain namemaintained by another registrar (this password is given by the holder duringthe operation among others).It is important to note that this command should only be used to retrieveinformation on objects and not used to check their availability for instance.This function is available through the command.Example for a IDN:C:C: C: C: C: xn--strae-42-tya.frC: C: C: PasTerribleCommeSecret666C: C:Association Française pour le Nommage Internet en Coopération | www.afnic.fr | contact@afnic.frTwitter : @AFNIC | Facebook : afnic.frTechnical Integration Guide- 17 -November 2009
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