diff -r 43e37759235e -r 51a74ef9ed63 Symbian3/SDK/Source/GUID-6822E7FA-D055-5693-8872-8D0E8554A734.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/SDK/Source/GUID-6822E7FA-D055-5693-8872-8D0E8554A734.dita Wed Mar 31 11:11:55 2010 +0100 @@ -0,0 +1,92 @@ + + + + + +Configuring +the TCP Receive WindowHow to configure the TCP receive window. +

Before you start, +you must understand the following:

    +

  • Bearer types

    • +

  • Lookup table

    • +

  • TCP window scaling

    • +
 + +To configure the +TCP receive window. +

The CTCPReceiveWindowSize() class defines the +public interface that the Licensee's NetMcpr must use to configure the TCP +receive window.

+ +To set the receive +window for different bearers. +Licensees need to override the SetTcpWin() function +to set the TCP receive window for different bearers. + +Use the SetTCPwin() function +to set the TCP receive window size. + +To configure +the Max TCP receive window size per TCP socket +If licensees want to configure the Max TCP receive window size per TCP +socket, then they must specify a value greater than the Max value configured +in the tcpip.ini file. + +To set the TCP +receive Max value uniform across all sockets +If licensees want to set the TCP receive Max value uniform across all +sockets, then they must specify the value in the tcpip.ini file +and set the iMaxWinSize = 0. So, MaxWinSize is always configured from the tcpip.ini file. + + + +Use the AppendExtensionL() function +to add the pointer to the lookup table. + The lookup table holds the TCP receive window size for different bearer +types. + + +Configuring +the TCP receive window example

The following code snippet shows +how to configure the TCP receive window size:

+ +// Licensees need to override the SetTCPwin() function + + +CNokiaTCPRecvWindow: Public CTCPReceiveWindowSize +{ + public: + virtual void SetTCPwin(TUint aBearerType) + { + //Set iWinSize based on the bearer type + + // If Licensees want to configure the Max TCP receive window size per TCP socket, + // then they must specify a value greater than the max value configured in the tcpip.ini file. + + // If Licensees want to set the TCP Receive max value uniform across all sockets, + // then they must specify the value in the tcpip.ini file and set the iMaxWinSize =0. + // So MaxWinSize will always be configured from the tcpip.ini file. + + } + +}; + + +CNetworkMetaConnectionProvider::ConstructL() +{ +CTCPReceiveWindowSize * iRecvWIndow = New(ELeave) CNokiaTCpRecvWindow(); +//Append the pointer to the lookup table. The Pointer is of the type CTCPReceiveWindowSize. +iAccessPointConfig->AppendExtensionL(iReceiveWindow); +} + + + +Variable +TCP Receive Window + \ No newline at end of file