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Problems creating an HTTP sync request through a proxy using Boost Beast

I changed the http_sync example for connecting through a proxy server, I tested it with wirehark, and the problem is that after sending the HTTP request, the request returns with the code 200 OK, and my program cannot read that, it is stuck waiting for http :: read for about 1 minute, and then the server shuts me down. I tried to work around this and just not read the answer, but then when I try to execute ssl handshake I get an error message: unknown protocol (as far as wirehark shows, my ssl handshake sends a greeting to the client, and then I get the full server hi, but mine the program sends FIN at the same time and gives me an error, I think, because it read 200 OK and not the server response and got confused). therefore, I think my question is, is there a way around this problem? I can not understand why http :: read is stuck.It works fine without a proxy in the middle. Here is my code:

using tcp = boost::asio::ip::tcp;       // from <boost/asio/ip/tcp.hpp>
namespace ssl = boost::asio::ssl;       // from <boost/asio/ssl.hpp>
namespace http = boost::beast::http;    // from <boost/beast/http.hpp>


int main(int argc, char** argv)
{
try
{
    // Check command line arguments.
    auto const target = "www.discogs.com:443";
    auto const host = "192.116.142.153";
    auto const port = "443";
    int version = 11;

    // The io_context is required for all I/O
    boost::asio::io_context ioc;

    // These objects perform our I/O

    ssl::context ctx{ ssl::context::sslv23_client };

    load_root_certificates(ctx);

    tcp::resolver resolver{ ioc };
    ssl::stream<tcp::socket> stream{ ioc, ctx };


    tcp::resolver::iterator sock = resolver.resolve("192.116.142.153", "8080");


    boost::asio::connect(stream.next_layer(), sock);

    http::request<http::string_body> req1{ http::verb::connect, target, version };
    req1.set(http::field::host, target);

    http::write(stream.next_layer(), req1);
    boost::beast::flat_buffer buffer;
    http::response<http::dynamic_body> res;
    http::read(stream.next_layer(), buffer, res);

    // Write the message to standard out
    std::cout << res << std::endl;

    // Perform the SSL handshake
    stream.handshake(ssl::stream_base::client);

    // Set up an HTTP GET request message
    http::request<http::string_body> req{ http::verb::get, target, version };
    req.set(http::field::host, host);
    req.set(http::field::user_agent, BOOST_BEAST_VERSION_STRING);

    // Send the HTTP request to the remote host
    http::write(stream, req);

    // This buffer is used for reading and must be persisted
    //boost::beast::flat_buffer buffer;

    // Declare a container to hold the response
    //http::response<http::dynamic_body> res;

    // Receive the HTTP response
    http::read(stream, buffer, res);

    // Write the message to standard out
    std::cout << res << std::endl;
    getchar();
    // Gracefully close the stream
    boost::system::error_code ec;
    stream.next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_send);
    if (ec == boost::asio::error::eof)
    {
        // Rationale:
        // http://stackoverflow.com/questions/25587403/boost-asio-ssl-async-shutdown-always-finishes-with-an-error
        ec.assign(0, ec.category());
    }
    if (ec)
        throw boost::system::system_error{ ec };

    // If we get here then the connection is closed gracefully
}
catch (std::exception const& e)
{
    std::cerr << "Error: " << e.what() << std::endl;

    return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
+4
1

proxy skip(). :

http::response<http::empty_body> res;
http::parser<false, http::empty_body> p(res);
p.skip(true);
http::read(stream.next_layer(), buffer, p);

. , , . https://www.boost.org/users/license.html - Fortinet:

#include <boost/asio.hpp>
#include <boost/asio/ssl.hpp>
#include <boost/beast.hpp>

using tcp = boost::asio::ip::tcp;    // from <boost/asio/ip/tcp.hpp>
namespace ssl = boost::asio::ssl;    // from <boost/asio/ssl.hpp>
namespace http = boost::beast::http; // from <boost/beast/http.hpp>

static void load_root_certificates(ssl::context &ctx);

int main() try {
    // Check command line arguments.
    auto const target = "www.boost.org:443";
    auto const host = "www.boost.org";
    int version = 11;

    // The io_context is required for all I/O
    boost::asio::io_context ioc;

    // These objects perform our I/O

    ssl::context ctx{ ssl::context::sslv23_client };

    load_root_certificates(ctx);

    tcp::resolver resolver{ ioc };
    ssl::stream<tcp::socket> stream{ ioc, ctx };

    stream.next_layer().connect({boost::asio::ip::address_v4::from_string("192.116.142.153"), 8080});

    {
        http::request<http::string_body> req1{ http::verb::connect, target, version };
        req1.set(http::field::host, target);

        http::write(stream.next_layer(), req1);

        boost::beast::flat_buffer buffer;

        http::response<http::empty_body> res;
        http::parser<false, http::empty_body> p(res);
        p.skip(true);
        http::read(stream.next_layer(), buffer, p);

        // Write the message to standard out
        std::cout << res << std::endl;
    }

    // Perform the SSL handshake
    stream.handshake(ssl::stream_base::client);

    // Set up an HTTP GET request message
    {
        http::request<http::string_body> req{ http::verb::get, "/users/license.html", version };
        req.set(http::field::host, host);
        req.set(http::field::user_agent, BOOST_BEAST_VERSION_STRING);

        // Send the HTTP request to the remote host
        http::write(stream, req);

        boost::beast::flat_buffer buffer;
        http::response<http::dynamic_body> res;
        http::read(stream, buffer, res);
        // Write the message to standard out
        std::cout << res << std::endl;
    }

    getchar();

    // Gracefully close the stream
    boost::system::error_code ec;
    stream.next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_send);
    if (ec == boost::asio::error::eof) {
        // Rationale:
        // http://stackoverflow.com/questions/25587403/boost-asio-ssl-async-shutdown-always-finishes-with-an-error
        ec.assign(0, ec.category());
    }
    if (ec)
        throw boost::system::system_error{ ec };
    // If we get here then the connection is closed gracefully
} catch (std::exception const &e) {
    std::cerr << "Error: " << e.what() << std::endl;
    return EXIT_FAILURE;
}


namespace detail {

static void load_root_certificates(ssl::context &ctx, boost::system::error_code &ec) {
    std::string const cert =
        /*  This is the DigiCert root certificate.

            CN = DigiCert High Assurance EV Root CA
            OU = www.digicert.com
            O = DigiCert Inc
            C = US

            Valid to: Sunday, ?November ?9, ?2031 5:00:00 PM

            Thumbprint(sha1):
            5f b7 ee 06 33 e2 59 db ad 0c 4c 9a e6 d3 8f 1a 61 c7 dc 25
        */
        "-----BEGIN CERTIFICATE-----\n"
        "MIIDxTCCAq2gAwIBAgIQAqxcJmoLQJuPC3nyrkYldzANBgkqhkiG9w0BAQUFADBs\n"
        "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n"
        "d3cuZGlnaWNlcnQuY29tMSswKQYDVQQDEyJEaWdpQ2VydCBIaWdoIEFzc3VyYW5j\n"
        "ZSBFViBSb290IENBMB4XDTA2MTExMDAwMDAwMFoXDTMxMTExMDAwMDAwMFowbDEL\n"
        "MAkGA1UEBhMCVVMxFTATBgNVBAoTDERpZ2lDZXJ0IEluYzEZMBcGA1UECxMQd3d3\n"
        "LmRpZ2ljZXJ0LmNvbTErMCkGA1UEAxMiRGlnaUNlcnQgSGlnaCBBc3N1cmFuY2Ug\n"
        "RVYgUm9vdCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMbM5XPm\n"
        "+9S75S0tMqbf5YE/yc0lSbZxKsPVlDRnogocsF9ppkCxxLeyj9CYpKlBWTrT3JTW\n"
        "PNt0OKRKzE0lgvdKpVMSOO7zSW1xkX5jtqumX8OkhPhPYlG++MXs2ziS4wblCJEM\n"
        "xChBVfvLWokVfnHoNb9Ncgk9vjo4UFt3MRuNs8ckRZqnrG0AFFoEt7oT61EKmEFB\n"
        "Ik5lYYeBQVCmeVyJ3hlKV9Uu5l0cUyx+mM0aBhakaHPQNAQTXKFx01p8VdteZOE3\n"
        "hzBWBOURtCmAEvF5OYiiAhF8J2a3iLd48soKqDirCmTCv2ZdlYTBoSUeh10aUAsg\n"
        "EsxBu24LUTi4S8sCAwEAAaNjMGEwDgYDVR0PAQH/BAQDAgGGMA8GA1UdEwEB/wQF\n"
        "MAMBAf8wHQYDVR0OBBYEFLE+w2kD+L9HAdSYJhoIAu9jZCvDMB8GA1UdIwQYMBaA\n"
        "FLE+w2kD+L9HAdSYJhoIAu9jZCvDMA0GCSqGSIb3DQEBBQUAA4IBAQAcGgaX3Nec\n"
        "nzyIZgYIVyHbIUf4KmeqvxgydkAQV8GK83rZEWWONfqe/EW1ntlMMUu4kehDLI6z\n"
        "eM7b41N5cdblIZQB2lWHmiRk9opmzN6cN82oNLFpmyPInngiK3BD41VHMWEZ71jF\n"
        "hS9OMPagMRYjyOfiZRYzy78aG6A9+MpeizGLYAiJLQwGXFK3xPkKmNEVX58Svnw2\n"
        "Yzi9RKR/5CYrCsSXaQ3pjOLAEFe4yHYSkVXySGnYvCoCWw9E1CAx2/S6cCZdkGCe\n"
        "vEsXCS+0yx5DaMkHJ8HSXPfqIbloEpw8nL+e/IBcm2PN7EeqJSdnoDfzAIJ9VNep\n"
        "+OkuE6N36B9K\n"
        "-----END CERTIFICATE-----\n"
        /*  This is the GeoTrust root certificate.

            CN = GeoTrust Global CA
            O = GeoTrust Inc.
            C = US
            Valid to: Friday, ‎May ‎20, ‎2022 9:00:00 PM

            Thumbprint(sha1):
            ‎de 28 f4 a4 ff e5 b9 2f a3 c5 03 d1 a3 49 a7 f9 96 2a 82 12
        */
        "-----BEGIN CERTIFICATE-----\n"
        "MIIDxTCCAq2gAwIBAgIQAqxcJmoLQJuPC3nyrkYldzANBgkqhkiG9w0BAQUFADBs\n"
        "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\n"
        "d3cuZGlnaWNlcnQuY29tMSswKQYDVQQDEyJEaWdpQ2VydCBIaWdoIEFzc3VyYW5j\n"
        "ZSBFViBSb290IENBMB4XDTA2MTExMDAwMDAwMFoXDTMxMTExMDAwMDAwMFowbDEL\n"
        "MAkGA1UEBhMCVVMxFTATBgNVBAoTDERpZ2lDZXJ0IEluYzEZMBcGA1UECxMQd3d3\n"
        "LmRpZ2ljZXJ0LmNvbTErMCkGA1UEAxMiRGlnaUNlcnQgSGlnaCBBc3N1cmFuY2Ug\n"
        "RVYgUm9vdCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMbM5XPm\n"
        "+9S75S0tMqbf5YE/yc0lSbZxKsPVlDRnogocsF9ppkCxxLeyj9CYpKlBWTrT3JTW\n"
        "PNt0OKRKzE0lgvdKpVMSOO7zSW1xkX5jtqumX8OkhPhPYlG++MXs2ziS4wblCJEM\n"
        "xChBVfvLWokVfnHoNb9Ncgk9vjo4UFt3MRuNs8ckRZqnrG0AFFoEt7oT61EKmEFB\n"
        "Ik5lYYeBQVCmeVyJ3hlKV9Uu5l0cUyx+mM0aBhakaHPQNAQTXKFx01p8VdteZOE3\n"
        "hzBWBOURtCmAEvF5OYiiAhF8J2a3iLd48soKqDirCmTCv2ZdlYTBoSUeh10aUAsg\n"
        "EsxBu24LUTi4S8sCAwEAAaNjMGEwDgYDVR0PAQH/BAQDAgGGMA8GA1UdEwEB/wQF\n"
        "MAMBAf8wHQYDVR0OBBYEFLE+w2kD+L9HAdSYJhoIAu9jZCvDMB8GA1UdIwQYMBaA\n"
        "FLE+w2kD+L9HAdSYJhoIAu9jZCvDMA0GCSqGSIb3DQEBBQUAA4IBAQAcGgaX3Nec\n"
        "nzyIZgYIVyHbIUf4KmeqvxgydkAQV8GK83rZEWWONfqe/EW1ntlMMUu4kehDLI6z\n"
        "eM7b41N5cdblIZQB2lWHmiRk9opmzN6cN82oNLFpmyPInngiK3BD41VHMWEZ71jF\n"
        "hS9OMPagMRYjyOfiZRYzy78aG6A9+MpeizGLYAiJLQwGXFK3xPkKmNEVX58Svnw2\n"
        "Yzi9RKR/5CYrCsSXaQ3pjOLAEFe4yHYSkVXySGnYvCoCWw9E1CAx2/S6cCZdkGCe\n"
        "vEsXCS+0yx5DaMkHJ8HSXPfqIbloEpw8nL+e/IBcm2PN7EeqJSdnoDfzAIJ9VNep\n"
        "+OkuE6N36B9K\n"
        "-----END CERTIFICATE-----\n";

    ctx.add_certificate_authority(boost::asio::buffer(cert.data(), cert.size()), ec);
    if (ec)
        return;
}

} // namespace detail

static void load_root_certificates(ssl::context &ctx) {
    boost::system::error_code ec;
    detail::load_root_certificates(ctx, ec);
    if (ec)
        throw boost::system::system_error{ ec };
}


HTTP/1.1 200 OK


HTTP/1.1 200 OK
Date: Sun, 15 Apr 2018 00:32:52 GMT
Server: Apache/2.2.15 (CentOS)
Accept-Ranges: bytes
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

8ee3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
  <title>Boost Software License</title>
  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" />
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</head><!--
Note: Editing website content is documented at:
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<body>
  <div id="heading">
    <div class="heading-inner">
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  <a href="/">
  <img src="/gfx/space.png" alt= "Boost C++ Libraries" class="heading-logo" />
  <span class="heading-boost">Boost</span>
  <span class="heading-cpplibraries">C++ Libraries</span>
  </a></h1>

  <p class="heading-quote">
  <q>...one of the most highly
  regarded and expertly designed C++ library projects in the
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+3

Source: https://habr.com/ru/post/1696185/

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