Function SocketOpen() | Xbase++

Creates a bound socket and connects it to a remote process.

SocketOpen( [<nSocketType>] , ;
            <cRemoteAddress>, ;
            <nPort>         , ;
            [@<nError>]       ) --> nSocket

Constants from the file SOCKET.CH must be used for this parameter:

Constant	Description
SOCK_STREAM *)	TCP stream socket
SOCK_DGRAM	UDP datagram socket
default

The remote address is specified with a character string containing the DNS name of the remote station or its IP address in dotted octet notation.

<nPort>

This is the numeric port number on the local computer to bind the socket to.

If this parameter is passed by reference to the function, it gets assigned a numeric error code when the function fails. #define constants beginning with WSAE are available in the file SOCKET.CH to identify an error condition.

On success the function returns the numeric socket value, otherwise a numeric 0 is returned.

SocketOpen() is called on the client side of a communication channel. The function creates a new socket, binds it to the specified address and port, and establishes a connection to a remote process. This is equivalent to calling the functions SocketNew() and SocketConnect(). When the connection is successful, data can be sent or received via this socket.

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Function SocketOpen() Professional