<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html xmlns:fn="http://www.w3.org/2005/02/xpath-functions"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link rel="stylesheet" href="../../../../doc/otp_doc.css" type="text/css"> <title>Erlang -- Standards Compliance</title> </head> <body bgcolor="white" text="#000000" link="#0000ff" vlink="#ff00ff" alink="#ff0000"><div id="container"> <script id="js" type="text/javascript" language="JavaScript" src="../../../../doc/js/flipmenu/flipmenu.js"></script><script id="js2" type="text/javascript" src="../../../../doc/js/erlresolvelinks.js"></script><script language="JavaScript" type="text/javascript"> <!-- function getWinHeight() { var myHeight = 0; if( typeof( window.innerHeight ) == 'number' ) { //Non-IE myHeight = window.innerHeight; } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) { //IE 6+ in 'standards compliant mode' myHeight = document.documentElement.clientHeight; } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) { //IE 4 compatible myHeight = document.body.clientHeight; } return myHeight; } function setscrollpos() { var objf=document.getElementById('loadscrollpos'); document.getElementById("leftnav").scrollTop = objf.offsetTop - getWinHeight()/2; } function addEvent(obj, evType, fn){ if (obj.addEventListener){ obj.addEventListener(evType, fn, true); return true; } else if (obj.attachEvent){ var r = obj.attachEvent("on"+evType, fn); return r; } else { return false; } } addEvent(window, 'load', setscrollpos); //--></script><div id="leftnav"><div class="innertube"> <img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/diameter-0.9.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>Diameter</strong><br><strong>User's Guide</strong><br><small>Version 0.9</small></p> <br><a href="javascript:openAllFlips()">Expand All</a><br><a href="javascript:closeAllFlips()">Contract All</a><p><small><strong>Chapters</strong></small></p> <ul class="flipMenu" imagepath="../../../../doc/js/flipmenu"> <li id="no" title="Introduction" expanded="false">Introduction<ul><li><a href="diameter_intro.html"> Top of chapter </a></li></ul> </li> <li id="no" title="Using the stack" expanded="false">Using the stack<ul><li><a href="diameter_using.html"> Top of chapter </a></li></ul> </li> <li id="no" title="Examples" expanded="false">Examples<ul><li><a href="diameter_examples.html"> Top of chapter </a></li></ul> </li> <li id="loadscrollpos" title="Standards Compliance" expanded="true">Standards Compliance<ul> <li><a href="diameter_soc.html"> Top of chapter </a></li> <li title="RFC 3588"><a href="diameter_soc.html#id193216">RFC 3588</a></li> <li title="RFC 3539"><a href="diameter_soc.html#id192596">RFC 3539</a></li> </ul> </li> </ul> </div></div> <div id="content"> <div class="innertube"> <h1>4 Standards Compliance</h1> <p> Known points of questionable or non-compliance.</p> <h3><a name="id193216">4.1 RFC 3588</a></h3> <ul> <li> <p> The End-to-End Security framework (section 2.9) isn't implemented since it is largely unspecified. The document that was to describe it (reference [AAACMS]) was abandoned in an uncompleted state several years ago and the current draft RFC deprecates the framework, including the P Flag in the AVP header.</p> </li> <li> <p> There is no TLS support. It's unclear (aka uninvestigated) how TLS would impact diameter but IPsec can be used without it needing to know.</p> </li> <li> <p> There is no explicit support for peer discovery (section 5.2). It can possibly be implemented on top of diameter as is but this is probably something that diameter should do. The current draft deprecates portions of the original RFC's mechanisms however.</p> </li> <li> <p> The peer state machine's election process (section 5.6.4) isn't implemented as specified since it assumes knowledge of a peer's Origin-Host before sending it a CER. (The identity becoming known upon reception of CEA.) The possibility of configuring the peer's Origin-Host could be added, along with handling of the case that it sends something else, but for many applications this will just be unnecessary configuration of a value that it has no control over.</p> </li> </ul> <h3><a name="id192596">4.2 RFC 3539</a></h3> <p> RFC 3539 is more difficult to comply to since it discusses problems as much as it requires functionality but all the MUST's are covered, the watchdog state machine being the primary one. Of the optional functionality, load balancing is left to the diameter user (since it's the one deciding who to send to) and there is no Congestion Manager.</p> </div> <div class="footer"> <hr> <p>Copyright © 2011-2011 Ericsson AB. All Rights Reserved.</p> </div> </div> </div></body> </html>