Well. I found the issue.

I coordinated with service provider. They don't support json which was the main cause.
However, i suggest to extend example further with 
# POST
$http_req(hdr) = "Content-Type: application/x-www-form-urlencoded";
$http_req(body) = "r_uri=$rU&f_uri=$fU";
http_async_query("http://example.com/test.php", "HTTP_REPLY");
I hope this will save others time.

--
regards,

abdul basit | p: +92 32 1416 4196 | o: +92 30 0841 1445

On 13 July 2017 at 16:49, Abdul Basit <basit.engg@gmail.com> wrote:
Hi, Brandon and Federico

Thank you for your reply.

Web server is not in my access and since its https request tcpdump will not help until i get specific certificates. I replaced the URL here.
Yes. 400 response is from server side.
# POST
$http_req(body) = "r_uri=$rU&f_uri=$fU";
http_async_query("https://example.com/test.php", "HTTP_REPLY");
Its working fine without any header specification.

However, when i try to send in the example format:
# POST
$http_req(hdr) = "Content-Type: application/json";
$http_req(method) = "POST";
$http_req(body) = "{'r_uri':'" + $rU + "', 'f_uri':'" + $fU + "'}";
http_async_query("https://example.com/test.php", "HTTP_REPLY");
It results in 
INFO: <script>: route[HTTP_REPLY]: status 400
INFO: <script>: route[HTTP_REPLY]: body Insufficient parameters.

where should i look?



--
regards,

abdul basit | p: +92 32 1416 4196 | o: +92 30 0841 1445

On 13 July 2017 at 13:46, Federico Cabiddu <federico.cabiddu@gmail.com> wrote:
Hi,
this has nothing to do with the module. The reply is coming from your http server.
In the first request you are sending a json body with "Content-Type: application/x-www-form-urlencoded" while it should be "Content-Type: application/json". 
In the second request you are sending a totally different body.
You should check your webserver's logs.

Best regards,

Federico Cabiddu

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