Add example chunked encoding response

src/asio_webserver/clientconnection.cpp

@@ -1,10 +1,13 @@
 #include "clientconnection.h"
 
+// system includes
 #include <cstdio>
 #include <utility>
 
+// esp-idf includes
 #include <esp_log.h>
 
+// local includes
 #include "webserver.h"
 #include "responsehandler.h"
 
@@ -19,12 +22,16 @@ ClientConnection::ClientConnection(Webserver &webserver, asio::ip::tcp::socket s
 {
     ESP_LOGI(TAG, "new client (%s:%hi)",
              m_remote_endpoint.address().to_string().c_str(), m_remote_endpoint.port());
+
+    m_webserver.m_clients++;
 }
 
 ClientConnection::~ClientConnection()
 {
     ESP_LOGI(TAG, "client destroyed (%s:%hi)",
              m_remote_endpoint.address().to_string().c_str(), m_remote_endpoint.port());
+
+    m_webserver.m_clients--;
 }
 
 void ClientConnection::start()
@@ -42,7 +49,7 @@ void ClientConnection::responseFinished(std::error_code ec)
         return;
     }
 
-    if constexpr (false) // Connection: Keep
+    if constexpr (true) // Connection: Keep
     {
 //        ESP_LOGD(TAG, "state changed to RequestLine");
         m_state = State::RequestLine;

src/asio_webserver/clientconnection.h

@@ -1,11 +1,13 @@
 #pragma once
 
-#include <asio.hpp>
+// system includes
 #include <memory>
-
 #include <string_view>
 #include <string>
 
+// esp-idf includes
+#include <asio.hpp>
+
 class Webserver;
 class ResponseHandler;
 

src/asio_webserver/responsehandler.h

@@ -1,5 +1,6 @@
 #pragma once
 
+// system includes
 #include <string_view>
 
 class ResponseHandler

src/asio_webserver/webserver.cpp

@@ -1,15 +1,17 @@
 #include "webserver.h"
 
+// esp-idf includes
 #include <esp_log.h>
 
+// local includes
 #include "clientconnection.h"
 
 namespace {
 constexpr const char * const TAG = "ASIO_WEBSERVER";
 } // namespace
 
-Webserver::Webserver(asio::io_context &io_context, short port)
-    : m_acceptor{io_context, asio::ip::tcp::endpoint(asio::ip::tcp::v4(), port)}
+Webserver::Webserver(asio::io_context &io_context, unsigned short port) :
+    m_acceptor{io_context, asio::ip::tcp::endpoint{asio::ip::tcp::v4(), port}}
 {
     ESP_LOGI(TAG, "create webserver on port %hi", port);
 

src/asio_webserver/webserver.h

@@ -1,21 +1,29 @@
 #pragma once
 
+// system includes
 #include <memory>
 #include <string_view>
+#include <atomic>
 
+// esp-idf includes
 #include <asio.hpp>
 
+// forward declares
 class ResponseHandler;
 class ClientConnection;
 
 class Webserver
 {
 public:
-    Webserver(asio::io_context& io_context, short port);
+    Webserver(asio::io_context& io_context, unsigned short port);
     virtual ~Webserver() = default;
 
     virtual std::unique_ptr<ResponseHandler> makeResponseHandler(ClientConnection &clientConnection, std::string_view method, std::string_view path, std::string_view protocol) = 0;
 
+protected:
+    friend class ClientConnection;
+    std::atomic<int> m_clients;
+
 private:
     void doAccept();
     void acceptClient(std::error_code ec, asio::ip::tcp::socket socket);