Example to send data from an Arduino to http://ioPush.net

ioPush_Post_Arduino.ino

/*
   Web client sketch for IDE v1.0.1 and w5100/w5200
   Uses POST method.
   Posted November 2012 by SurferTim
*/
/*
 * Modified the 09/01/2016 to send data to http://ioPush.net
 */

#include <SPI.h>
#include <Ethernet.h>

byte mac[] = {  
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

// Server configuration
char serverName[] = "iopush.net";
int serverPort = 80;
char pageName[] = "/app/api/post";
// Auth token
char authToken[] = "YourAuthToken";

EthernetClient client;
int totalCount = 0; 
// insure params is big enough to hold your variables
char params[28];

// set this to the number of milliseconds delay
// this is 30 seconds
#define delayMillis 30000UL

unsigned long thisMillis = 0;
unsigned long lastMillis = 0;

void setup() {
  Serial.begin(9600);

  // disable SD SPI
  pinMode(4,OUTPUT);
  digitalWrite(4,HIGH);

  Serial.print(F("Starting ethernet..."));
  if(!Ethernet.begin(mac)) Serial.println(F("failed"));
  else Serial.println(Ethernet.localIP());

  delay(2000);
  Serial.println(F("Ready"));
}

void loop()
{
  // If using a static IP, comment out the next line
  Ethernet.maintain();

  thisMillis = millis();

  if(thisMillis - lastMillis > delayMillis)
  {
    lastMillis = thisMillis;

    //  *******    Set data to post    **********
    sprintf(params,"{\"body\": \"Total count : %i\", \"badge\": \"I\", \"push\"; \"True\"}",totalCount);     
    
    if(!postPage(serverName,serverPort,pageName,params, authToken)) Serial.print(F("Fail "));
    else Serial.print(F("Pass "));
    totalCount++;
    Serial.println(totalCount,DEC);
  }    
}


byte postPage(char* domainBuffer,int thisPort,char* page,char* thisData, char* authToken)
{
  int inChar;
  char outBuf[64];

  Serial.print(F("connecting..."));

  if(client.connect(domainBuffer,thisPort) == 1)
  {
    Serial.println(F("connected"));

    // send the header
    sprintf(outBuf,"POST %s HTTP/1.1",page);
    client.println(outBuf);
    sprintf(outBuf,"Host: %s",domainBuffer);
    client.println(outBuf);
    client.println(F("Connection: close\r\nContent-Type: application/json"));
    sprintf(outBuf,"authentication_token: %s",authToken);
    client.println(outBuf);
    sprintf(outBuf,"Content-Length: %u\r\n",strlen(thisData));
    client.println(outBuf);

    // send the body (variables)
    client.print(thisData);
  } 
  else
  {
    Serial.println(F("failed"));
    return 0;
  }

  int connectLoop = 0;

  while(client.connected())
  {
    while(client.available())
    {
      inChar = client.read();
      Serial.write(inChar);
      connectLoop = 0;
    }

    delay(1);
    connectLoop++;
    if(connectLoop > 10000)
    {
      Serial.println();
      Serial.println(F("Timeout"));
      client.stop();
    }
  }

  Serial.println();
  Serial.println(F("disconnecting."));
  client.stop();
  return 1;
}