tree 287fe082a40c79b56efa953c11ed4db1f611993b
parent 525e1f75e4e32fad8cfa198630bf29b7c147263a
author Maxim Dounin <mdounin@mdounin.ru> 1333402175 +0000
committer Maxim Dounin <mdounin@mdounin.ru> 1333402175 +0000

Upstream: reject upstreams without normal servers.

Such upstreams cause CPU hog later in the code as number of peers isn't
expected to be 0.  Currently this may happen either if there are only backup
servers defined in an upstream block, or if server with ipv6 address used
in an upstream block.