tree ae52e80cb2f877e25113ebb6574a7573b68b2ce5
parent cf1e4781a9c0efd2c057096191ece4c79d3a0edd
author Gu Feng <flygoast@126.com> 1414410723 +0800
committer Gu Feng <flygoast@126.com> 1414410723 +0800

Upstream: limited next_upstream time and tries when resolving DNS.

When got multiple upstream IP addresses using DNS resolving, the number of
upstreams tries and the maxinum time spent for these tries were not affected.
This patch fixed it.