Prosoft-technology MVI69-ADMNET Uživatelský manuál stáhnout pdf (Strana 85)

MVI-ADMNET ♦ 'C' Programmable WATTCP API Functions

'C' Programmable Application Development Module with Ethernet Developer's Guide

ProSoft Technology, Inc. Page 85 of 122

February 20, 2013

udp_open_fast

Syntax

int udp_open_fast( tcp_Socket *sk, word lPort, longword ina, word port,

dataHandler_t datahandler );

Parameters

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. For this function, there is no wait to resolve the IP

address that passes the function. 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 used to

convert an IP address into a longword-formatted variable.

Return Value

Connection cannot be made

Connection is made

Example

udp_Socket *socket;

. . .

if(udp_open_fast(socket, 0, resolve("192.168.0.1"), 5656, NULL))

{

printf("Open Successfully\n");

}

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Prosoft-technology MVI69-ADMNET Uživatelský manuál Strana 85