Full_Name: James M Leddy
Submission from: (NULL) (188.8.131.52)
From RFC 2782:
A client MUST attempt to contact the target host with the
lowest-numbered priority it can reach.
This patch sorts the DNS SRV records by their priority, and
additionally gives records with a larger weight a higher probability
of appearing earlier. This way, the DNS SRV records are tried in the
order of their priority.