TCP retransmit doesn't set dscp? RRS feed

  • Question

  • I've written some code in MSVSC++ Express and used the QWave lib to add a dscp value to my TCP transmissions. For normal transmissions, the dscp value is set, but during a retransmission, it is 0. Shouldn't retransmissions also set the dscp value?
    Thursday, March 25, 2010 2:17 PM


  • How are you setting the DSCP value?  Does your method utilize WFP?  In WFP the DSCP value can only be added doing IPHeader modification.  (the stack currently prohibits DSCP / TOS from being added via the FWPS_TRANSPORT_SEND_PARAMS)

    If this is unrelated to WFP, then your question would probably be best addressed in http://social.msdn.microsoft.com/Forums/en/networkqosqwave/threads.

    Hope this helps


    Dusty Harper [MSFT]
    Microsoft Corporation
    This posting is provided "AS IS", with NO warranties and confers NO rights
    Thursday, March 25, 2010 6:04 PM