Why Asynchronous DNS
SIP clients and servers can use DNS to resolve URIs for locating next hops. Details are covered in RFC 3263.
ReSIProcate uses a forked version of the ares asynchronous DNS library originally from MIT. This forked version is located in the contrib subdirectory of reSIProcate's svn repository. The reSIProcate version offers the following over the MIT version:
- numerous bug fixes, particularly on win32 architectures
- support of IPV6