GSMSSLClient.ino

/*
  GSMSSLClient

  This sketch connects to a website (https://example.com)
  using the Portenta CAT.M1/NB IoT GNSS Shield and TLS.
 
 */

#include <GSM.h>
#include <Arduino_DebugUtils.h>
#include <GSMDebug.h>
#include "arduino_secrets.h" 

#if defined(ARDUINO_EDGE_CONTROL)
  #include "root_ca.h"
#endif

char pin[]      = SECRET_PIN;
char apn[]      = SECRET_APN;
char username[] = SECRET_USERNAME;
char pass[]     = SECRET_PASSWORD;

const char  server[] = "example.com";
const char* ip_address;
int port = 443;
GSMSSLClient client;

void setup() {

  Serial.begin(9600);
  while(!Serial) {}

#if defined(ARDUINO_EDGE_CONTROL)
  // Power ON MKR2
  pinMode(ON_MKR2, OUTPUT);
  digitalWrite(ON_MKR2, HIGH);

  // Configure root certificate
  client.appendCustomCACert(root_ca);
#endif

  // To enable AT Trace debug uncomment the following lines
  //GSM.trace(Serial);
  //GSM.setTraceLevel(4);

  // Enable GSM library debug
  Debug.setDebugOutputStream(&Serial);
  Debug.setDebugLevel(4);

  Serial.println("Starting Carrier Network registration");
  if(!GSM.begin(pin, apn, username, pass, CATM1, BAND_3 | BAND_20 | BAND_19)){
    Serial.println("The board was not able to register to the network...");
    // do nothing forevermore:
    while(1);
  }
  Serial.println("\nStarting connection to server...");
  // if you get a connection, report back via serial:
  if (client.connect(server, port)) {
    Serial.println("connected to server");
    // Make a HTTP request:
    client.println("GET / HTTP/1.1");
    client.print("Host: ");
    client.println(server);
    client.println("Connection: close");
    client.println();
  } else {
    Serial.println("unable to connect to server");
  }
  
}

void loop() {

  // if there are incoming bytes available
  // from the server, read them and print them:
  while (client.available()) {
    char c = client.read();
    Serial.write(c);
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting from server.");
    client.stop();

    // do nothing forevermore:
    while (true);
  }

}