Hank Beaver

When using a BigIP to load balance a Sinatra app via Thin you will need to provide more than just the GET request string in F5’s “send string” field OR you might get “Request Invalid!” error message. Heads up.

Using this will cause issue:

GET /ops/heartbeat

This works:

GET /ops/heartbeat HTTP/1.1\r\nHost: \r\nConnection: Close\r\n\r\n