Networking Classes Summary

The following pages provide detailed information on the properties and methods for the various classes that implement Ethernet networking communications.

The networking classes include: a IPEndPoint Class for specifying IP and port addresses; a Socket Class that is the basis for most networking I/O operations and contains the basic send and receive methods; a TcpListener Class that is used for implementing TCP server applications; a TcpClient Class for implementing TCP client applications; and finally a UdpClient Class for implementing both the server and client side of UDP based communications.

The tables below summarize the properties and methods for each Class, which are described in greater detail in the following sections.

IPEndPoint Member Class
IPEndPoint Member	Type	Description
New IPEndPoint	Constructor Method	Creates an Endpoint and allows the IP Address and Port to be specified.
ipendpoint_obj.IPAddress	Property	Sets or gets the IP Address of an Endpoint.
ipendpoint_obj.Port	Property	Sets or gets the Port of an Endpoint.

Socket Member Class
Socket Member	Type	Description
socket_obj.Available	Property	Gets the number of data bytes currently available to receive from a Socket.
socket_obj.Blocking	Property	Sets or gets the blocking mode for a Socket. If True, the Socket blocks. If False, it does not block.
socket_obj.Close	Method	Closes any connections associated with a Socket.
socket_obj.Connect	Method	Requests a TCP Client connection with a remote TCP Server.
socket_obj.KeepAlive	Property	Sets or gets the flag that controls whether a keep-alive message is automatically transmitted over the current TCP connection.
socket_obj.Receive	Method	Receives a datagram from an open TCP connection.
socket_obj.ReceiveFrom	Method	Receives a datagram from an open UDP connection.
socket_obj.ReceiveTimeout	Property	Sets or gets the receive timeout, in milliseconds, for a Socket.
socket_obj.RemoteEndPoint	Property	Gets information about the remote end point of a TCP connection.
socket_obj.Send	Method	Sends a datagram on an open TCP connection.
socket_obj.SendTimeout	Property	Sets or gets the send timeout, in milliseconds, for a Socket.
socket_obj.SendTo	Method	Sends a datagram to an open UDP connection.

TcpClient Member Class
TcpClient Member	Type	Description
New TcpClient	Constructor Method	Creates an Object for a TCP Client and optionally requests a connection.
tcpclient_obj.Client	Method	Returns the embedded Socket for performing I/O.
tcpclient_obj.Close	Method	Closes a Client Socket and breaks any connection.

TcpListener Member Class
TcpListener Member	Type	Description
New TcpListener	Constructor Method	Creates an Object for a TCP Server to listen for connections.
tcplistener_obj.AcceptSocket	Method	Accepts a connection and returns a new Socket Object for use by the TCP Server.
tcplistener_obj.Close	Method	Stops listening and closes the listener Socket.
tcplistener_obj.Pending	Property	True if there is a pending connection and AcceptSocket will succeed. Otherwise False.
tcplistener_obj.Start	Method	Starts listening for connection requests.
tcplistener_obj.Stop	Method	Stops listening and closes the listener Socket. Same as Close method.

UdpClient Member Class
UdpClient Member	Type	Description
New UdpClient	Constructor Method	Creates an Object for I/O using UDP.
udpclient_obj.Client	Method	Returns the embedded Socket for performing I/O.
udpclient_obj.Close	Method	Closes a Socket.