3.1.6.1 Connect Retry Timer

When the connect retry timer expires, a new TRANS_COMMAND_CONNECT or TRANS_COMMAND_CONNECT_ACCEPT message SHOULD be sent, depending on the current state. The connect retry timer SHOULD then be rescheduled for the next period. It is recommended that the retry period start at 200 ms, doubling every time with a maximum of 5 seconds and 14 retries.

If the maximum number of retries has already been attempted when the timer expires, the connection attempt SHOULD be considered as failed. If the connection was initiated from an inbound TRANS_COMMAND_CONNECT packet arriving on a listening computer system, the listener MAY choose to go back to listening if it did not allow additional connection attempts while the failed attempt was in progress.