How to access TCP/IP sockets

Client programs access TCP/IP sockets through the generic socket interface RSocket, specifying protocol-specific behaviour through argument values. This section contains notes on the particular usage of RSocket functions for TCP and UDP sockets. It does not repeat the information contained in the documentation for RSocket, to which you should always refer first.

RSocket takes a number of parameters which identify what kind of socket connection to provide. The important parameters for TCP/IP or UDP are the addrFamily, the sockType and the protocol. The following constant values should be used for TCP/IP.

addrFamily: KAfInet or KAfInet6 for IPv6

sockType: KSockStream (for TCP/IP) or KSockDatagram for UDP

protocol: KProtocolInetTCP or KProtocolInetUDP

void Example::open(void)
{   
    TInt err;
    RSocketServ ss;
    RSocket sock;

    err = ss.Connect();
    err = sock.Open(ss, KAfInet, KSockStream, KProtocolInetTcp);
    // ... now connect to the socket to send and receive data

Sockets Client