Self-hosted OWIN project; http://localhost:8080 won't work, http://+:8080 does?
问题 I have a self-hosted OWIN project that I'm trying to run. It is configured to listen on: http://localhost:8080 Whenever I try to access that URL I get an HTTP Error 503. The service is unavailable error. I have run netstat -a -b and made absolutely sure there's no other application running on port 8080. When I change the configuration to http://+:8080 the project works fine. So the only change is localhost to + . Now here's the weird things: I made sure all entries ( localhost:8080 or +:8080