I'm testing cloudfoundry doppler client using cf-cf-java

i'm using firehose subscribe to receive data from cloud foundry and
receive well data a few minute, but few minutes later firehose do not
receive data.

so i checked the debug log and i detected sometihg
receive websocket frame opCode=2, when program receive data well
but receive websocket frame opCode=8, then can not receive data
also, reactor.ipc.netty.http.client.HttpClient logged in order
FLUSH
CLOSE
INACTIVE

what should i do to receive data without stopping

thanks.