libnghttp2_asio: Added access to a requests remote endpoint

src/asio_server_connection.h

@@ -70,8 +70,9 @@ public:
 
   /// Start the first asynchronous operation for the connection.
   void start() {
-    handler_ = std::make_shared<http2_handler>(socket_.get_io_service(),
-                                               [this]() { do_write(); }, mux_);
+    handler_ = std::make_shared<http2_handler>(
+        socket_.get_io_service(), socket_.lowest_layer().remote_endpoint(),
+        [this]() { do_write(); }, mux_);
     if (handler_->start() != 0) {
       return;
     }

src/asio_server_http2_handler.cc

@@ -136,6 +136,9 @@ int on_frame_recv_callback(nghttp2_session *session, const nghttp2_frame *frame,
       break;
     }
 
+    auto& req = strm->request().impl();
+    req.remote_endpoint(handler->remote_endpoint());
+
     handler->call_on_request(*strm);
 
     if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
@@ -225,8 +228,9 @@ int on_frame_not_send_callback(nghttp2_session *session,
 } // namespace
 
 http2_handler::http2_handler(boost::asio::io_service &io_service,
+                             boost::asio::ip::tcp::endpoint ep,
                              connection_write writefun, serve_mux &mux)
-    : writefun_(writefun), mux_(mux), io_service_(io_service),
+    : writefun_(writefun), mux_(mux), io_service_(io_service), remote_ep_(ep),
       session_(nullptr), buf_(nullptr), buflen_(0), inside_callback_(false),
       tstamp_cached_(time(nullptr)),
       formatted_date_(util::http_date(tstamp_cached_)) {}
@@ -449,6 +453,8 @@ response *http2_handler::push_promise(boost::system::error_code &ec,
 
 boost::asio::io_service &http2_handler::io_service() { return io_service_; }
 
+boost::asio::ip::tcp::endpoint http2_handler::remote_endpoint() { return remote_ep_; }
+
 callback_guard::callback_guard(http2_handler &h) : handler(h) {
   handler.enter_callback();
 }

src/asio_server_http2_handler.h

@@ -53,7 +53,8 @@ using connection_write = std::function<void(void)>;
 
 class http2_handler : public std::enable_shared_from_this<http2_handler> {
 public:
-  http2_handler(boost::asio::io_service &io_service, connection_write writefun,
+  http2_handler(boost::asio::io_service &io_service,
+                boost::asio::ip::tcp::endpoint ep, connection_write writefun,
                 serve_mux &mux);
 
   ~http2_handler();
@@ -89,6 +90,8 @@ public:
 
   boost::asio::io_service &io_service();
 
+  boost::asio::ip::tcp::endpoint remote_endpoint();
+
   const std::string &http_date();
 
   template <size_t N>
@@ -152,6 +155,7 @@ private:
   connection_write writefun_;
   serve_mux &mux_;
   boost::asio::io_service &io_service_;
+  boost::asio::ip::tcp::endpoint remote_ep_;
   nghttp2_session *session_;
   const uint8_t *buf_;
   std::size_t buflen_;

src/asio_server_request.cc

@@ -50,6 +50,10 @@ void request::on_data(data_cb cb) const {
 
 request_impl &request::impl() const { return *impl_; }
 
+boost::asio::ip::tcp::endpoint request::remote_endpoint() const {
+  return impl_->remote_endpoint();
+}
+
 } // namespace server
 } // namespace asio_http2
 } // namespace nghttp2

src/asio_server_request_impl.cc

@@ -54,6 +54,14 @@ void request_impl::call_on_data(const uint8_t *data, std::size_t len) {
   }
 }
 
+boost::asio::ip::tcp::endpoint request_impl::remote_endpoint() const {
+  return remote_ep_;
+}
+
+void request_impl::remote_endpoint(boost::asio::ip::tcp::endpoint ep) {
+  remote_ep_ = ep;
+}
+
 } // namespace server
 } // namespace asio_http2
 } // namespace nghttp2

src/asio_server_request_impl.h

@@ -28,6 +28,7 @@
 #include "nghttp2_config.h"
 
 #include <nghttp2/asio_http2_server.h>
+#include <boost/asio/ip/tcp.hpp>
 
 namespace nghttp2 {
 namespace asio_http2 {
@@ -54,12 +55,16 @@ public:
   void stream(class stream *s);
   void call_on_data(const uint8_t *data, std::size_t len);
 
+  boost::asio::ip::tcp::endpoint remote_endpoint() const;
+  void remote_endpoint(boost::asio::ip::tcp::endpoint ep);
+
 private:
   class stream *strm_;
   header_map header_;
   std::string method_;
   uri_ref uri_;
   data_cb on_data_cb_;
+  boost::asio::ip::tcp::endpoint remote_ep_;
 };
 
 } // namespace server

src/includes/nghttp2/asio_http2_server.h

@@ -59,6 +59,9 @@ public:
   // Application must not call this directly.
   request_impl &impl() const;
 
+  // Returns the remote endpoint of the request
+  boost::asio::ip::tcp::endpoint remote_endpoint() const;
+
 private:
   std::unique_ptr<request_impl> impl_;
 };