Arduino Function: GSMclient.read

Description

This method read the next byte received from the server the client is connected to (after the last call to read()). read() inherits from the Stream utility class.

Syntax

client.read()

Returns

 int - The next byte (or character), or -1 if none is available.

Examples

/*
Web client

This sketch connects to a website through a GSM shield. Specifically,
this example downloads the URL "http://arduino.org/" and prints it
to the Serial monitor.

Circuit:
* GSM shield attached to an Arduino
* SIM card with a data plan
*/

// 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.org)
char server[] = "arduino.org";
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(;;)
;
}
}


Based on the reference originally written by Arduino Community,  wiring.org.co and  arduino.cc