As temp workaround , enable and disabling the reverse invoke port will solve your need.
Also check the below properties
Specifies the time (in seconds) the Internal Server will wait
before closing an unresponsive connection to the Reverse Gateway Server.
The default is 0, which means do not time out (a timeout period of
If the Reverse Gateway Server does not make a request to the
Internal Server on a given connection within a specified amount of time,
the Reverse Gateway Server will make a ping request to the Internal
Server on that connection. This time period is controlled by the
following property on the Reverse Gateway Server.Specifies how often (in seconds) the Reverse Gateway Server will
send a ping request to the Internal Server. The default is 60 seconds.
Ping interval on the Reverse Gateway Server must be
less than the timeout period on the Internal Server. For example, if the
timeout period on the Internal Server is 180 seconds, the ping interval
must be less than 180 seconds.