question about readError.

[ghost]

I follow the example. After New(), go readError(...). func readError(errorChan <-chan error) { for { apnerror := <-errorChan log.Error(apnerror.Error()) } } But i always read an error : read tcp 17.172.232.47:2195: use of closed network connection

And is it safe to use one Apn struct, in many goruntines at the same time ?