RedBear Duo can't request using httpclient library

Cloud
1

Hi,

I am trying to make a simple web service request using the httpclient library library provided by the Web IDE(Particle).

My code is such as:

Serial.println();
Serial.println("Application>\tStart of Loop.");
// Request path and body can be set at runtime or at setup.
request.hostname = "http://www.redit.com/r/funny/new/.json";
request.port = 80;
request.path = "";

// Get request
http.get(request, response, headers);
Serial.print("Application>\tResponse status: ");
Serial.println(response.status);

Serial.print("Application>\tHTTP Response Body: ");
Serial.println(response.body);

nextTime = millis() + 3000;

And it returns to me in the console:

Application>    Start of Loop.
HttpClient>     Connection failed.
Application>    Response status: -1
Application>    HTTP Response Body:

But, using the ping() function, i can confirm that the board is really connected to the Internet.

I have already tried with other URLs and the result is the same.

How can I solve this problem?

2

To start with, try changing this

request.hostname = "www.redit.com";   // only this is the host name
request.port = 80;
request.path = "/r/funny/new/.json";  // and this part is the path

Usually looking at the samples provided with a library is a good starting point to see how things are supposed to be used correctly.

3

Hi @ScruffR,

Using your example, i got this response in the console:

Application>    Start of Loop.
HttpClient>     Connecting to: www.redit.com:80
HttpClient>     Start of HTTP Request.
GET /r/funny/new/.json HTTP/1.0
Connection: close
HOST: www.redit.com
Accept: */*
HttpClient>     End of HTTP Request.

HttpClient>     Receiving TCP transaction of 128 bytes.
HTTP/1.1 301 Moved Permanently
Server: Apache
X-Frame-Options: SAMEORIGIN
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
Pragma: no-cache
Location: http://redit.com/r/funny/new/.json
Vary: Accept-Encoding
X-XSS-Protection: 1; mode=block
Content-Type: text/html; charset=UTF-8
X-Cacheable: YES
Date: Thu, 05 May 2016 17:46:44 GMT
Connection: close

HttpClient>     End of TCP transaction.
HttpClient>     End of HTTP Response (861ms).
HttpClient>     Status Code: 301
Application>    Response status: 301
Application>    HTTP Response Body:

Testing this URL in the browser, i realize that the server redirects to https connection, so this answer makes sense.
Testing with my server, i got the response status -1 (my server is not https and has all needed headers).

In my application, I will return a json object, so is it possible to receive a json object (I know it will be in plain text) with this library? And is it possible to send a file do the server?

Thanks for help!

4

If you are not expecting a HTTP response, why not just use TCPClient instead of HTTPClient?