Arduino - GSMClientConnect

GSM : GSMClient class

connect()

Description

Connects to a specified IP address and port. The return value indicates success or failure.

Syntax

client.connect(ip, port)

Parameters

ip: the IP address that the client will connect to (array of 4 bytes)
port: the port that the client will connect to (int)

Returns

boolean : Returns true if the connection succeeds, false if not.

Example

/*
Web client This sketch connects to a website through a GSM shield. Specifically,
this example downloads the URL "http://arduino.cc/" and prints it
to the Serial monitor. Circuit:
* GSM shield attached to an Arduino
* SIM card with a data plan created 8 Mar 2012
by Tom Igoe http://arduino.cc/en/Tutorial/GSMExamplesWebClient */ // libraries
#include <GSM.h> // PIN Number
#define PINNUMBER "" // APN data
#define GPRS_APN "GPRS_APN" // replace your GPRS APN
#define GPRS_LOGIN "login" // replace with your GPRS login
#define GPRS_PASSWORD "password" // replace with your GPRS password // initialize the library instance
GSMClient client;
GPRS gprs;
GSM gsmAccess; // URL, path & port (for example: arduino.cc)
char server[ ] = "arduino.cc" ;
char path[ ] = "/" ;
int port = 80 ; // port 80 is the default for HTTP void setup ( )
{
// initialize serial communications
Serial.begin ( 9600 ) ;
Serial.println ( "Starting Arduino web client." ) ;
// connection state
boolean notConnected = true ; // After starting the modem with GSM.begin()
// attach the shield to the GPRS network with the APN, login and password
while (notConnected)
{
if ( (gsmAccess.begin (PINNUMBER) ==GSM_READY) &
(gprs.attachGPRS (GPRS_APN, GPRS_LOGIN, GPRS_PASSWORD) ==GPRS_READY) )
notConnected = false ;
else
{
Serial.println ( "Not connected" ) ;
delay ( 1000 ) ;
}
} Serial.println ( "connecting..." ) ; // if you get a connection, report back via serial:
if (client.connect (server, port) )
{
Serial.println ( "connected" ) ;
// Make a HTTP request:
client.print ( "GET " ) ;
client.print (path) ;
client.println ( " HTTP/1.0" ) ;
client.println ( ) ;
}
else
{
// if you didn't get a connection to the server:
Serial.println ( "connection failed" ) ;
}
} void loop ( )
{
// if there are incoming bytes available
// from the server, read them and print them:
if (client.available ( ) )
{
char c = client.read ( ) ;
Serial.print (c) ;
} // if the server's disconnected, stop the client:
if ( !client.available ( ) && !client.connected ( ) )
{
Serial.println ( ) ;
Serial.println ( "disconnecting." ) ;
client.stop ( ) ; // do nothing forevermore:
for ( ;; )
;
}
}