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c++ - nghttp2 asio 连接到 Apple 推送通知超时

转载 作者:太空宇宙 更新时间:2023-11-04 13:05:00 26 4
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我正在使用 nghttp2_asio 连接到 Apple Push Notifications 开发者服务。我正在尝试关注 APN guide as written :

Keep your connections with APNs open across multiple notifications; do not repeatedly open and close connections. APNs treats rapid connection and disconnection as a denial-of-service attack. You should leave a connection open unless you know it will be idle for an extended period of time

所以我试图以连接不会超时的方式编写它。但是,我的连接确实在大约一分钟后超时。我看到为非 nghttp2_asio 发送 PING 帧,但不是为 asio 版本发送,正如 Apple 所说:

You can check the health of your connection using an HTTP/2 PING frame.

如何保持与 APN 的连接?

代码

#include <nghttp2/asio_http2_client.h>

#include <boost/asio/io_service.hpp>
#include <boost/asio/ssl/context.hpp>

#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>
#include <boost/uuid/uuid_io.hpp>

#include <iostream>

#define LOG_EASY( STREAM ) std::cout << __PRETTY_FUNCTION__ << ": " << STREAM << std::endl;

int main( int argc, char *argv[] )
{
boost::asio::io_service io_service;
boost::asio::ssl::context ssl_context( boost::asio::ssl::context::sslv23 );

std::string hostname( "https://api.development.push.apple.com:443" );

// The context options
ssl_context.set_options( boost::asio::ssl::context::default_workarounds |
boost::asio::ssl::context::no_sslv2 |
boost::asio::ssl::context::single_dh_use );

// Now put it up
ssl_context.use_private_key_file( "/home/mike/dev/cpp/sw/run/certs/apn.key", boost::asio::ssl::context::pem );
ssl_context.use_certificate_file( "/home/mike/dev/cpp/sw/run/certs/apn.crt", boost::asio::ssl::context::pem );

boost::system::error_code ec;
nghttp2::asio_http2::client::configure_tls_context( ec, ssl_context );
boost::asio::detail::throw_error( ec ); // Throw as necessary

// Make the new session
nghttp2::asio_http2::client::session session( io_service,
ssl_context,
"api.development.push.apple.com",
"443" );

// On connect callberk
session.on_connect( [ &session, &hostname ]( boost::asio::ip::tcp::resolver::iterator endpoint ) {
LOG_EASY( "Connected!" );

// Error cheek
boost::system::error_code e;

// Generate a crazy filename
boost::uuids::uuid uuid = boost::uuids::random_generator()();

// Header merp
nghttp2::asio_http2::header_map headers;
headers.emplace( "apns-id", (nghttp2::asio_http2::header_value){ boost::uuids::to_string( uuid ), false } );
headers.emplace( "apns-expiration", (nghttp2::asio_http2::header_value){ "0", false } );
headers.emplace( "apns-priority", (nghttp2::asio_http2::header_value){ "10", false } );
headers.emplace( "apns-topic", (nghttp2::asio_http2::header_value){ "com.company.App-Topic", false } );

// Send a test push
const nghttp2::asio_http2::client::request *request = session.submit( e,
"POST",
hostname+"/3/device/129a46cbac12d8c523aaf8a1758d07f0fc8b291c776aed4a7dc6f1535be1521e",
"{ \"aps\" : { \"alert\" : \"Hello\" } }",
headers );

boost::asio::detail::throw_error( e ); // Throw as necessary

// Now hook
request->on_response( []( const nghttp2::asio_http2::client::response &response ){
LOG_EASY( "response received! Status code: " << response.status_code() );

response.on_data( []( const uint8_t *data, std::size_t len ) {
LOG_EASY( "Response length: " << len );
LOG_EASY( std::string( (const char *)data, len ) );
} );
} );

// On push
request->on_push( []( const nghttp2::asio_http2::client::request &push ){
LOG_EASY( "push request received!" );

push.on_response( []( const nghttp2::asio_http2::client::response &res ){
LOG_EASY( "push response received!" );

res.on_data( []( const uint8_t *data, std::size_t len ) {
LOG_EASY( std::string( (const char *)data, len ) );
});
});

} );

// On close
request->on_close( []( uint32_t error_code ){
LOG_EASY( "Request close: " << error_code );
} );
} );

// On error kerlbook
session.on_error( []( const boost::system::error_code &error ) {
LOG_EASY( error.message() );
} );

// Run the servace
io_service.run();
}

输出

main(int, char**)::<lambda(boost::asio::ip::basic_resolver<boost::asio::ip::tcp>::iterator)>: Connected!
main(int, char**)::<lambda(boost::asio::ip::basic_resolver<boost::asio::ip::tcp>::iterator)>::<lambda(const nghttp2::asio_http2::client::response&)>: response received! Status code: 200
main(int, char**)::<lambda(boost::asio::ip::basic_resolver<boost::asio::ip::tcp>::iterator)>::<lambda(const nghttp2::asio_http2::client::response&)>::<lambda(const uint8_t*, std::size_t)>: Response length: 0
main(int, char**)::<lambda(boost::asio::ip::basic_resolver<boost::asio::ip::tcp>::iterator)>::<lambda(const nghttp2::asio_http2::client::response&)>::<lambda(const uint8_t*, std::size_t)>:
main(int, char**)::<lambda(boost::asio::ip::basic_resolver<boost::asio::ip::tcp>::iterator)>::<lambda(uint32_t)>: Request close: 0
main(int, char**)::<lambda(const boost::system::error_code&)>: Connection timed out

最佳答案

感谢 nghttp2 的开发人员,现在无需修改上述代码即可使用此功能。

https://github.com/nghttp2/nghttp2/issues/847

关于c++ - nghttp2 asio 连接到 Apple 推送通知超时,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42837218/

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