Hi Frank, On Tue, Jun 07, 2016 at 04:16:39PM -0700, Frank Liu wrote: > I checked that page before sending the email. > The "Passive Health Monitoring" section of that page wasn't clear on how > nginx would consider a "failed attempt", especially in case of UDP where > there is no "handshake". > > On Tue, Jun 7, 2016 at 3:45 PM, Yuriy Medvedev <medvedev...@gmail.com> > wrote: > > > Hi, https://www.nginx.com/resources/admin-guide/load-balancer/ > > > > 2016-06-08 0:03 GMT+03:00 Frank Liu <gfrank...@gmail.com>: > > > >> How does passive health check work in stream_proxy module? especially for > >> UDP which is connectionless. How does nginx detect if it is a failed > >> connection and retry next?
There are two types of such errors. If proxy_responses is not zero, ICMP Destination Unreachable signals a UDP error. This results in socket read error. If proxy_responses is not default, proxy_timeout expiration is considered a UDP connection error too. -- Roman Arutyunyan _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
