Arduino with Splunk

macalamela — Sat, 23 Sep 2017 00:07:39 GMT

hello, we are trying to use splunk with arduino by wifi (esp8266). We utilized the port 8088 and this code but don´t recognize this port and send to port 443.

But we have some problems and we can't connect they both together. Can you have some example by how we can connect that?

We try using this code:

/*  Medidor de temperatura com LM35, ESP8266 e Thingspeak
 *  
 *  Envia a temperatura lida pelo sensor LM35 e envia para a internet 
 *  com o auxilio da platarforma de Cloud do Thingspeak.
 *  
 *  library modified 23 Mar 2016 on Arduino IDE 1.6.7
 *  by Cléber Werlang (http://iot4nerds.wordpress.com/)
 */

#include               // Biblioteca do ESP8266
#include "Limits.h"

String apiKey = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";   //Coloque a API do ThingSpeak entre as aspas
const char* ssid = "Renato iPhone 5s";            //Coloque a ssid do Wifi entre as aspas.
const char* password = "xxxxxxxxxxx";       //Coloque a senha do Wifi entre as aspas.
const char* server = "nnn,nnn,nn,172";


const int sensorTemp = A0; //Pino analógico que o sensor de temperatura está conectado.
int valorSensorTemp = 0;  //usada para ler o valor do sensor de temperatura.
int menorValorTemp  = INT_MAX; //usada para armazenar o menor valor da temperatura.



WiFiClient client;

void setup() {
  Serial.begin(115200);
  delay(10);

  WiFi.begin(ssid, password);

  Serial.println();
  Serial.println();
  Serial.print("Conectando em ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("Conectado!");

}

void loop() {

  Serial.println("Lendo temperatura!");


 //Para evitar as grandes variações de leitura do componente 
  //LM35 são feitas 8 leitura é o menor valor lido prevalece.  
  menorValorTemp  = INT_MAX; //Inicializando com o maior valor int possível
  for (int i = 1; i <= 8; i++) {
    //Lendo o valor do sensor de temperatura.
    valorSensorTemp = analogRead(sensorTemp);   

    //Transformando valor lido no sensor de temperatura em graus celsius aproximados.
    valorSensorTemp *= 0.54 ; 

    //Mantendo sempre a menor temperatura lida
    if (valorSensorTemp < menorValorTemp) {
      menorValorTemp = valorSensorTemp;
    }

   delay(150); 
  }   


    String postStr = apiKey;
           postStr +="&field1=";
           postStr += String(menorValorTemp);
           postStr += "\r\n\r\n";

     client.connect("https://nnn,nnn,nn,172",8088);
     client.println("POST /1/inputs/http?index=<arduino>&sourcetype=arduino&host=arduino");
     client.println("Authorization: Splunk <xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx>");
     /client.print("Authorization: Splunk "+apiKey);/
      client.print(postStr.length());
     client.println("Content-Type: text/plain");
     client.println("Connection: close");
     client.println("");
     client.println(postStr);

     Serial.println("");
     Serial.print("Temperatura: ");        //Imprime a temperatura na Serial.
     Serial.print(menorValorTemp);                  
     Serial.println("C");
     Serial.println("Enviando para o ThingSpeak");

  client.stop();                     
  delay(14000);                           // thingspeak tem um delay de 14 segundos para os updates.
  Serial.println("Enviado!");
  Serial.println("");
}

Re: Arduino with Splunk

richgalloway — Sat, 23 Sep 2017 20:07:52 GMT

@macalamela, I edited your question to mask your IP address, API key, and password. These items should not be published in a public forum like this one.

Re: Arduino with Splunk

livehybrid — Sat, 23 Sep 2017 21:22:23 GMT

Hi,
Have you tried using the WiFiClientSecure instead of WiFiClient? It is quite a while since ive looked at this sort of thing, however this could be part of the issue. This is assuming your receiver is indeed HTTPS.

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