Hi Dev,
Why I often got this message :
Dev pool connection was closed due to an error.
Mining will proceed at reduced rate while not connected to dev pool.
but after sometime it will connect to dev pool :
Dev pool connected and ready.
is there any solution for this message?

Thanks.
Well, it should really only happen when we restart our servers, which isn't often at all. So, there's something else cutting the connection for you. In some cases there are home routers that cut connections, in other cases many countries/jurisdictions don't like neither SSL traffic nor mining traffic. May I ask where you're located? You can PM me if you want to. Also, I'd love to know what version of TRM you're running? We have noticed a higher degree of short-lived inbound connections lately, but can't explain why.