Add application_opt() request_errors

Configuring the value 'callback' all errors detected in incoming
requests to result in a handle_request callback. The default value
'answer_3xxx' is the previous behaviour in which diameter answers
protocol errors without a callback.

1 files changed, 24 insertions, 4 deletions

diff --git a/lib/diameter/doc/src/diameter.xml b/lib/diameter/doc/src/diameter.xml
index ba9225da8b..accf21cf98 100644
--- a/lib/diameter/doc/src/diameter.xml
+++ b/lib/diameter/doc/src/diameter.xml
@@ -16,7 +16,7 @@
 <header>
 
 <copyright>
-<year>2011</year><year>2012</year>
+<year>2011</year><year>2013</year>
 <holder>Ericsson AB. All Rights Reserved.</holder>
 </copyright>
 <legalnotice>
@@ -206,11 +206,13 @@ probably avoid it.</p>
 <item>
 <p>
 Determines the manner in which incoming answer messages containing
-decode errors are handled.
+decode errors are handled.</p>
+
+<p>
 If <c>callback</c> then errors result in a &app_handle_answer;
 callback in the same fashion as for &app_handle_request;, with
 errors communicated in the <c>errors</c> field of the
-<c>#diameter_packet{}</c> record passed to the callback.
+<c>#diameter_packet{}</c> passed to the callback.
 If <c>report</c> then an answer containing errors is discarded
 without a callback and a warning report is written to the log.
 If <c>discard</c> then an answer containing errors is silently
@@ -224,6 +226,24 @@ question is as if a callback had taken place and returned
 Defaults to <c>report</c> if unspecified.</p>
 </item>
 
+<tag><c>{request_errors, answer_3xxx|callback}</c></tag>
+<item>
+<p>
+Determines the manner in which incoming requests are handled when an
+error other than 3007, DIAMETER_APPLICATION_UNSUPPORTED. (With which no
+application callback module can be associated.)</p>
+
+<p>
+If <c>answer_3xxx</c> then the request is answered by diameter
+without a &app_handle_request; callback taking place if a 3xxx series
+error (protocol errors) is detected.
+If <c>callback</c> then even 3xxx errors result in an application
+&app_handle_request; callback.</p>
+
+<p>
+Defaults to <c>answer_3xxx</c> if unspecified.</p>
+</item>
+
 </taglist>
 
 <marker id="call_opt"/>
@@ -534,7 +554,7 @@ Pkt    = #diameter_packet{}
 The RFC 3539 watchdog state machine has
 transitioned into (<c>up</c>) or out of (<c>down</c>) the OKAY
 state.
-If a <c>#diameter_packet{}</c> record is present in an <c>up</c> event
+If a <c>#diameter_packet{}</c> is present in an <c>up</c> event
 then there has been a capabilties exchange on a newly established
 transport connection and the record contains the received CER or CEA.
 Otherwise a connection has reestablished without the loss or