I'm having an issue with SignalR that is causing IE (9) to send thousands of ping/reconnect attempts to the server within a second or two.
signalr/reconnect?transport=longPolling&connectionToken=(some long token here)...
It gets a 404 (along with the full 404 response)
and then does another ping:
signalr/ping?_=(ID)
Which gets a "pong" response and then attempts another reconnect as above.
The issue is it tries this and fails a few thousand times (last test was 6,800+ ping/reconnects). Not only is this a lot of bad server talk, but it also chews through bandwidth pretty fast sending and receiving all these responses.
It finally ends up sending a signalr/negotiate which succeeds and stops the ping/reconnect madness