Class RWDPConn

RWDPConn

Support

Supported from 6.0

Description

WDP (Wireless Datagram Protocol) provides a general datagram transport service above the various data capable bearer services.

For error codes, see TReturnCodes, and RWAPConn::TReturnCodes.

Derivation

RSubSessionBase Client-side handle to a sub-session RWAPConn Operations available on connections in all stack layers RWDPConn WDP (Wireless Datagram Protocol) provides a general datagram transport service above the various data capable bearer services

Defined in RWDPConn:
CancelRecv(), EInvalidParameter, Open(), Recv(), Send(), SendTo(), TReturnCodes

Inherited from RSubSessionBase:
CloseSubSession(), CreateSubSession(), SendReceive(), SubSessionHandle(), operator=()

Inherited from RWAPConn:
CancelAll(), Close(), EBadConnection, EBearerError, EBufferTooSmall, ECannotOpenPort, EDelete, EGet, EHead, EMoreData, EOptions, EPortAlreadyBound, EPost, EPut, ETooManyConnections, ETrace, GetBearer(), GetLocalPort(), GetRemoteAddress(), TMethod, TPort

void CancelRecv();

Description

Cancels an asynchronous RecvFrom() request.

TInt Open(RWAPServ& aServer,TPort aLocalPort);

Description

Initialises a bound connection. This is used to wait for a remote connect (listening). Services that listen for incoming data to a bound connection receive data from all available bearers.

Parameters

RWAPServ& aServer Handle to the session with the EPOC WAP server TPort aLocalPort Local port. If 0, the port is allocated automatically.

Return value

TInt Error code

TInt Open(RWAPServ& aServer,
          const TDesC8& aRemoteHost,
          TPort aRemotePort,
          TPort aLocalPort,
          TBearer aBearer,
          TBool aSecureConn);

Description

Initialises a fully specified connection.

Parameters

RWAPServ& aServer Handle to the session with the EPOC WAP server const TDesC8& aRemoteHost Remote address. The format is dependent on the bearer. TPort aRemotePort Remote port TPort aLocalPort Local port. If 0, the port is allocated automatically. TBearer aBearer Bearer to use TBool aSecureConn Always EFalse

Return value

TInt Error code

void Recv(TDes8& aRemoteAddress,
          TPckg<TUint16>& aRemotePort,
          TDes8& aBuffer,
          TRequestStatus& aStatus);

Description

Receives a buffer from a bound connection.

If the connection is fully specified when opened, it will receive only from that host, otherwise datagrams can be received from any host.

The function completes as soon as a datagram is received. If aBuffer is too small, then the function completes with KErrOverflow and throws away the extra data.

Parameters

TDes8& aRemoteAddress On completion, remote address TPckg<TPort>& aRemotePort On completion, remote address TDes8& aBuffer On completion, data buffer from remote TRequestStatus& aStatus Asynchronous request status

TInt Send(const TDesC8& aBuffer);

Description

Sends a buffer to a destination specified in the fully defined connection.

Parameters

const TDesC8& aBuffer Data to send

Return value

TInt Error code

TInt SendTo(const TDesC8& aRemoteAddress,
            TPort aRemotePort,
            const TDesC8& aBuffer);

Description

Sends a buffer to the destination specified in the arguments.

Note: this way of sending may not be used with secure (WTLS) connections.

Parameters

const TDesC8& aRemoteAddress Remote address TPort aRemotePort Remote port const TDesC8& aBuffer Data to send

Return value

TInt Error code

TReturnCodes

Description

Error codes.

EInvalidParameter Given parameter is invalid