I made a simple test app a couple of days ago, using long polling to get notifications. Everything was working fine, receiving notifications as expected. Today I got back to it and now I can no longer receive any notifications. The server I'm using (from the previous session api call response) is "rproxy1.messenger.yahooapis.com". There is no HTTP error response returned, its simply a connection error - looks like the server is refusing the connection at the TCP level when I run Wireshark on the network traffic.
Any idea whats going on here? Are Yahoo's servers just that flaky, or is my IP being blacklisted or something (although I've tried it from to different IP addresses)? Very frustrating not having way to troubleshoot this.