help, rtmp livestream connection get disconnected after 4 hours

[trebla]

Hi,
I am having issue with recording a livestream. The connection gets disconnected around 4 hours. I tried setting the duration parameter in the "play" message to no avail. Are there any other parameters that need to be set or server message that a client needs to reply in order to prevent the issue. In a wireshark trace, it is the server sending a tcp "FIN" to initiate the disconnection. In rtmpdump trace prior to the tcp disconnect there are no unusual message being dumped out. I am just running out of idea now, any help or pointer would be greatly appreciated. Thanks.