The patch for 0.6.34 can be applied to 0.7.42. It passes all of the
unit tests, which are rather complete, but I don't know of anyone
using it in the wild.

Igor: would be nice if this patch could get merged. It just allows one
to delay connecting to a backend by returning NGX_BUSY from the
peer.init callback in an upstream module. Seems to work well.
http://github.com/ry/nginx-ey-balancer/blob/afccd5c15e10257e675fb56715dd7d63bfcf4ffc/patches/nginx-0.6.34.patch


ry