I get the following error when trying to connect to APNS with connect function
terminate called after throwing an instance of 'web::websockets::client::websocket_exception' what(): set_fail_handler: 7: End of File

The source is:
`#include
#include <cpprest/ws_client.h>

using namespace web;
using namespace web::websockets::client;
using namespace web::websockets;

int main()
{
websocket_client_config lConfig;
lConfig.set_ssl_context_callback([&](boost::asio::ssl::context& aCtx)
{
aCtx.set_options( boost::asio::ssl::context::default_workarounds);
aCtx.use_certificate_file("../certificates/certificate.pem", boost::asio::ssl::context::pem);
aCtx.use_private_key_file("../certificates/private_key.pem", boost::asio::ssl::context::pem);
});

websocket_client m_client(lConfig);
//after connect I get error "End of file."
m_client.connect(U("wss://gateway.sandbox.push.apple.com:2195")).wait();

websocket_outgoing_message msg;
std::string body_str("Push Notification");
msg.set_utf8_message(body_str);
m_client.send(msg).wait();
m_client.close().wait();

}
`