This documentation relates to an unstable version of Cipango.
visit the current release documentation home.

DNS

Owned by Former user (Deleted)
Last updated: May 24, 2013Version comment

Overview

Since 3.0.0.M1, Cipango supports the procedure described in RFC 3263 §4.1 and §4.2.

Configuration

By default, only A or AAAA DNS queries are used, to add support to RFC 3263, the configuration file etc/cipango-dns.xml should be used.
This can be achieve by adding in start.d/100-sip.ini, the line
etc/cipango-dns.xml

Retry

A retry is done on the following events (The request is automatically sent to next hop in a new transaction without notifying the servlet application):

  • TCP connection open error
  • On timer B or F expiration
  • on 503 error response

Blacklisting

A black list of server is set: on one of the errors previously listed, the server identified by the IP address and port is blacklisted for 5 minutes (no more requests will be sent to this host).