tests/curl.cpp cannot POST data to another website about fastcgipp HOT 7 CLOSED

If you insert data into the Curl object using the stream insertion operator (<< ) it gets sent as a POST request. The curl object doesn't use the easy setopt you're looking at. It uses a callback function that extracts the data from a non-contiguous buffer. Just follow what the above code is doing. It gets sent as a POST request.

from fastcgipp.

Thank you for your quick reply. I kept trying using curl << REQUEST_BODY and finally it worked.
The following code runs on the server, and can send JSON request to a third SMS server.

void OpenAPIHandler::response_get_info5( RequestPtr request ){
int id = 1;
std::setlocale( LC_ALL, "en_US.utf8" );
const auto initialFds = openfds();
{
Fastcgipp::Curler curler( 1 );
curler.start();
std::stringstream ss;
std::vectorstd::string proper;
Fastcgipp::Curl curl;
curl.setCallback( std::bind( &OpenAPIHandler::booking_callback, this, request, curl, proper, std::placeholders::_1 ) );
curl.setUrl("http://yourdomain/echo.cgi");
curl.addHeader("Content-Type: application/json; charset=utf-8");
curl.addHeader("Accept-Charset: utf-8");
std::string requestBody = std::string( "\r\n\r\n{\r\n\r\n"a":1\r\n\r\n}" );
curl << requestBody << id++;
curler.queue( curl );
curler.stop();
curler.join();
}
}

from fastcgipp.

many thanks to your quick reply. Problem solved

from fastcgipp.

By the way you shouldn't need to set the content-length header. Curl should set that automatically based on the size passed to curl. This is at least what my tests have indicated. If you should happen to notice otherwise let me know.

from fastcgipp.

It seems that I closed this post too soon. My SMS server could not recognize the request JSON as shown below. So I used https://postman-echo.com/post to debug the information. In the following code, I did not set the Content-Length, and I used application/json, and sent request to the API https://postman-echo.com/post.

void OpenAPIHandler::response_get_info5( RequestPtr request ){
int id = 1;
std::setlocale( LC_ALL, "en_US.utf8" );
const auto initialFds = openfds();
{
Fastcgipp::Curler curler( 1 );
curler.start();
std::stringstream ss;
std::vectorstd::string proper;
Fastcgipp::Curl curl;
curl.setCallback( std::bind( &OpenAPIHandler::booking_callback, this, request, curl, proper, std::placeholders::_1 ) );
curl.setUrl("http://yourdomain/echo.cgi");
curl.addHeader("Content-Type: application/json; charset=utf-8");
curl.addHeader("Accept-Charset: utf-8");
std::string requestBody = std::string( "\r\n\r\n{\r\n\r\n"a":1\r\n\r\n}" );
curl << requestBody << id++;
curler.queue( curl );
curler.stop();
curler.join();
}
}

The API https://postman-echo.com/post responded as follows, failing to recognize the simples json {"a":1} as a json object(json":null").

response_data: {"args":{},"data":"\r\n\r\n0\r\n\r\n{\r\n\r\n"a":1\r\n\r\n}1","files":{},"form":{},"headers":{"x-forwarded-proto":"https","x-forwarded-port":"443","host":"postman-echo.com","x-amzn-trace-id":"Root=1-5ffbad5b-1fea46516f9a6aef388bed9a","content-length":"25","accept":"/","content-type":"application/json; charset=utf-8","accept-charset":"utf-8"},"json":null,"url":"https://postman-echo.com/post"}

I tried many times, including jsoncpp Json::Value, but with no luck. Would you explain how to format the data so as to let the server recognize the request body is a JSON object?

Thanks in advance

from fastcgipp.

"\r\n\r\n0\r\n\r\n{\r\n\r\n"a":1\r\n\r\n}1" is absolutely not valid JSON. There is a number one at the end. This is coming the id++. I'm unclear why that's been left in. You may be inclined to read up on iostream usage.

from fastcgipp.

You are right, sir. Now the server can recognize I am sending a JSON request.
Thank you for your quick reply.
Many thanks

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