Beast: Post request to pastebin

[a1987zz]

I send a post request via boost to the pastebin api, but an empty string is returned. Although earlier - two weeks ago, a line of insertion from pastеbin was returned. Here is their api: https://pastebin.com/doc_api:

the string to return: 1VeKw3nnOC.
https://pastebin.com/dCQfUW4m.

no matter how I tried to change the code, nothing comes out

`

include

include

include

include

include < iostream >

include < string >

include < locale >

include < sstream >

include < Windows.h >

namespace http = boost::beast::http;
using namespace std;
using namespace boost::asio::ip;
using namespace boost::locale;

int main() {
const std::string host = "pastebin.com";
const std::string target = "/api/api_raw.php";
string output;

boost::asio::io_context ioc;


boost::asio::ip::tcp::resolver resolver(ioc);

boost::asio::ip::tcp::socket socket(ioc);

boost::asio::connect(socket, resolver.resolve(host, "80"));

http::request<http::string_body> req{ http::verb::post, target, 11 };
req.set(http::field::host, host);
req.set(http::field::user_agent, BOOST_BEAST_VERSION_STRING);
req.set(http::field::server, "Beast");
req.body() = std::string("api_dev_key=180586b396d0cc8ed21d89b8d64625d4&api_user_key=e327521c51591b66f2793a96859a0ab1&api_paste_key=dCQfUW4m&api_option=show_paste");
req.set(http::field::content_type, "application/x-www-form-urlencoded");
req.set(http::field::content_length, 135);
req.prepare_payload();

http::write(socket, req);

{
    boost::beast::flat_buffer buffer;
    http::response<http::dynamic_body> res;
    http::read(socket, buffer, res);
    std::string output = boost::beast::buffers_to_string(res.body().data());

    std::cout << output << std::endl;
   // std::wstring wstr(output.size(), L' ');
   // char const* p = &output[0];
   // mbsrtowcs(&wstr[0], &p, wstr.size(), nullptr);
   // std::wcout << wstr << std::endl;

    system("Pause");
}


socket.shutdown(boost::asio::ip::tcp::socket::shutdown_both);

return 0;

}`

I am attaching ahk code that returns a string, as an example:

api_dev_key := "180586b396d0cc8ed21d89b8d64625d4"
api_user_key := "e327521c51591b66f2793a96859a0ab1"
api_paste_key := "dCQfUW4m"
api_option := "show_paste"

raw_paste := "api_dev_key=" . api_dev_key . "&api_user_key=" . api_user_key . "&api_paste_key=" . api_paste_key . "&api_option=" . api_option

url := "https://pastebin.com/api/api_raw.php"

HttpObj := ComObjCreate("WinHttp.WinHttpRequest.5.1")
HttpObj.Open("POST", url, false)
HttpObj.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded")
HttpObj.Send(raw_paste)
HttpObj.WaitForResponse()
Body := HttpObj.ResponseBody
pData := NumGet(ComObjValue(Body)+8+A_PtrSize)
ResponseText := StrGet(pData, Body.MaxIndex() + 1, "utf-8")
msgbox % ResponseText

[vinniefalco]

So, you are using a plain socket (boost::asio::ip::tcp::socket) and you expect it to work with a server that requires HTTPS? Your "ahk" program connects using HTTPS (url := "https://pastebin.com/api/api_raw.php") but the Beast code you provided uses a plain socket. Try using one of the Beast HTTPS client examples, such as this one:
https://github.com/boostorg/beast/tree/develop/example/http/client/sync-ssl

[a1987zz]

thanks, but it is difficult for me. Can you please show a complete example of a request, if not difficult.

[vinniefalco]

Yes I just linked the example which shows how to submit a request using SSL:
https://github.com/boostorg/beast/tree/develop/example/http/client/sync-ssl

[a1987zz]

Ok, what is int main (int argc, char ** argv) - what is it, you need to pass parameters to the program?

[a1987zz]

ok, why then this code ahk which sends http works? But boost asio is not:

pastekey1 := "dCQfUW4m"
url := "http://pastebin.com/raw.php?i=" pastekey1

HttpRequest := ComObjCreate("WinHttp.WinHttpRequest.5.1")
HttpRequest.Open("GET", url)
HttpRequest.Send()
InvoiceRawHTML := HttpRequest.ResponseText
msgbox % InvoiceRawHTML

and in the first example ahk no error is returned: Bad API request, invalid api_dev_key in boost asio if you write http instead of https

[vinniefalco]

See https://github.com/boostorg/beast/issues/2049#issuecomment-672518811