ProSoft Technology MVI69-ADMNET User Manual
Page 84
WATTCP API Functions
MVI-ADMNET ♦ 'C' Programmable
Developer's Guide
'C' Programmable Application Development Module with Ethernet
Page 84 of 122
ProSoft Technology, Inc.
February 20, 2013
udp_open
Syntax
int udp_open( udp_Socket *sk, word lPort, longword ina, word port,
dataHandler_t datahandler );
Parameters
sk
Pointer to the socket that has been initialized.
lPort
Local port number.
ina
Host IP Address.
port
Host port number.
datahandler
Data Handler. Not used in this version. Use NULL for this parameter.
Description
This function opens a UDP socket connection to a host machine using
parameters passed to it. IPort is an option parameter. Most of the time, IPort can
be set to 0. The API will find an available port number for the socket. ina is a host
IP address passed as a longword. Function resolve can be use to convert an IP
address into a longword-formatted variable.
Return Value
Connection cannot be made
>0
Connection is made
Example
udp_Socket *socket;
. . .
if(udp_open(socket, 0, resolve("192.168.0.1"), 5656, NULL))
{
printf("Open Successfully\n");
}
See Also
resolve (page 86)