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HTTP GET Request

AkshayKumar
10-Marble

HTTP GET Request

Hi,

I am able to send my Sensor data to Thingworx using REST calls from ESP8266 ,

but not able to fetch a property value from Thingworx using GET request instead  getting 401 error(Unauthorised) 

even though there is correct appKey. I can fetch data using Python but in "C " am getting problem.

Please help me where i went wrong.

Thank you!

 

Here is the code:

 

 

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include<arduino.h>
#include <ESP8266HTTPClient.h>

#define ACCEPT_TYPE "application/json"


const char* ssid = "D-Link_DIR-615";
const char* password = "cadoptiot@123";


const char TWPlatformBaseURL[] = "http://xxx.ngrok.io:80";
const char appKey[] = "axxxxxxxxxxxxxxxxx8";


WiFiClient client;


void setup() {
Serial.begin(115200);
Serial.println();
Serial.print("connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());;

 

}

void loop()
{

HTTPClient http;
int httpCode = -1;
String response = "";
Serial.print("[httpGetPropertry] begin...");
String fullRequestURL = String(TWPlatformBaseURL) + "/Thingworx/Things/Capacity/Properties/hour?appKey=" + String(appKey);

http.begin(fullRequestURL);
http.addHeader("Accept",ACCEPT_TYPE,false,false);
Serial.println("GET URL>" + fullRequestURL +"<");
// start connection and send HTTP header
httpCode = http.GET();
// httpCode will be negative on error
if(httpCode > 0)
{
response = http.getString();
Serial.printf("[httpGetPropertry] response code:%d body>",httpCode);
Serial.println(response + "<\n");
} else
{
Serial.printf("[httpGetPropertry] failed, error: %s\n\n", http.errorToString(httpCode).c_str());
}
http.end();

}

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
vxavier
13-Aquamarine
(To:AkshayKumar)

Hello,

 

Check the expiration time of your appKey(a lot of times I got this error because expiration time, and maybe when you did in python, it was still valid), and check the user permissions of that appKey, if he has the permissions to do what you are trying to do with this code.

 

Cheers,

Vinicius.

View solution in original post

4 REPLIES 4

The Serial Monitor shows:

 

[httpGetPropertry] begin...GET URL>http://baz.ngrok.io:80/Thingworx/Things/Capacity/Properties/hour?appKey=a3188ba0-944a-486c-92a1-d434...<
[httpGetPropertry] response code:401 body><

vxavier
13-Aquamarine
(To:AkshayKumar)

Hello,

 

Check the expiration time of your appKey(a lot of times I got this error because expiration time, and maybe when you did in python, it was still valid), and check the user permissions of that appKey, if he has the permissions to do what you are trying to do with this code.

 

Cheers,

Vinicius.

Hi,

    I have checked it properly , i have used same appkey for both Python and Arduino code

and i am administrator, i had all permissions i guess..

 

Thankyou!

Akshay

Yeah Thank you, i have checked in Platform Subsytem and allowed permission for 

"Allow Application Key as URL Parameter"

 Now its working fine.

 

Regards,

Akshay

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