IP_PORTS module routines

IP_PORTS module routines - WIN32

ip_ports.c - Internet Protocol PORTS routines

This is the main initialization file for the TCP & UDP PORTS subsystem. This subsystem supports TCP sending or receiving and UDP broadcasting & receiving of datagrams (ASCII or binary data) using the Windows 32 bit winsock DLL. This module contains the alloc & free code as well as the connect to the DLL code required by Windows.

Function	alloc_IP_SOCK
Include file	IP_PORTS.H
Prototype	IP_SOCK * alloc_IP_SOCK( int type )
Remarks	Allocate, initialize and return a IP socket structure. The type can be either SOCKET_UDP or SOCKET_TCP. This routine is front-ended by 2 macros alloc_udp_connection() and alloc_tcp_connection(). This routine will also load WIN32's winsock.

Function	free_IP_SOCK
Include file	IP_PORTS.H
Prototype	void free_IP_SOCK( IP_SOCK *ip_ptr )
Remarks	Close and free either type of IP_SOCK.

Function	connect_to_winsock
Include file	IP_PORTS.H
Prototype	void connect_to_winsock( void )
Remarks	Make sure we've got a reasonably new WIN32 winsock (and load it).

Function	send_datagram
Include file	IP_PORTS.H
Prototype	int send_datagram( IP_SOCK *ip_ptr )
Remarks	Send a UDP datagram out the socket.

Function	receive_datagram
Include file	IP_PORTS.H
Prototype	int receive_datagram( IP_SOCK *ip_ptr )
Remarks	Receive a UDP datagram from the socket. This code supports both blocked and non-blocked reads.

Function	load_datagram
Include file	IP_PORTS.H
Prototype	void load_datagram( IP_SOCK ip_ptr , void dt_buff , int size )
Remarks	Check max size and load an IP_SOCK's datagram area with a user data buffer.

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