Return index.html to the client requesting '/'

config.example.json

@@ -60,6 +60,10 @@
         "session_timeout": 0,
         //document_root: Root path of HTTP document, defaut path is ./
         "document_root": "./",
+        //home_page: Set the HTML file of the home page, the default value is "index.html"
+        //If there isn't any handler registered to the path "/", the home page file in the "document_root" is send to clients as a response
+        //to the request for "/".
+        "home_page": "index.html",
         //upload_path: The path to save the uploaded file. "uploads" by default. 
         //If the path isn't prefixed with /, ./ or ../,
         //it is relative path of document_root path

drogon_ctl/templates/config.csp

@@ -56,10 +56,14 @@
         //is the number of CPU cores
         "threads_num": 1,
         //enable_session: False by default
-        "enable_session": true,
+        "enable_session": false,
         "session_timeout": 0,
         //document_root: Root path of HTTP document, defaut path is ./
         "document_root": "./",
+        //home_page: Set the HTML file of the home page, the default value is "index.html"
+        //If there isn't any handler registered to the path "/", the home page file in the "document_root" is send to clients as a response
+        //to the request for "/".
+        "home_page": "index.html",
         //upload_path: The path to save the uploaded file. "uploads" by default. 
         //If the path isn't prefixed with /, ./ or ../,
         //it is relative path of document_root path

lib/inc/drogon/HttpAppFramework.h

@@ -666,6 +666,15 @@ public:
      */
     virtual void setClientMaxWebSocketMessageSize(size_t maxSize) = 0;
 
+    //Set the HTML file of the home page, the default value is "index.html"
+    /**
+     * If there isn't any handler registered to the path "/", the home page file in the "document_root" 
+     * is send to clients as a response to the request for "/".
+     * NOTE:
+     * This operation can be performed by an option in the configuration file.
+     */
+    virtual void setHomePage(const std::string &homePageFile) = 0;
+
 #if USE_ORM
     ///Get a database client by @param name
     /**

lib/inc/drogon/HttpResponse.h

@@ -131,8 +131,8 @@ public:
     /// @param data is the data displayed on the page.
     /// For more details, see the wiki pages, the "View" section.
     static HttpResponsePtr newHttpViewResponse(const std::string &viewName, const HttpViewData &data = HttpViewData());
-    /// Create a response that returns a 302 Found page, redirecting to another page located in the @param path.
-    static HttpResponsePtr newLocationRedirectResponse(const std::string &path);
+    /// Create a response that returns a 302 Found page, redirecting to another page located in the @param location.
+    static HttpResponsePtr newLocationResponse(const std::string &location);
     /// Create a response that returns a file to the client.
     /**
      * @param fullPath is the full path to the file.

lib/src/ConfigLoader.cc

@@ -54,7 +54,7 @@ static bool bytesSize(std::string &sizeStr, size_t &size)
             //64bit system
         case 't':
         case 'T':
-            size = (1024 * 1024 * 1024 * 1024);
+            size = (1024L * 1024L * 1024L * 1024L);
             sizeStr.resize(sizeStr.length() - 1);
             break;
 #endif
@@ -323,6 +323,7 @@ static void loadApp(const Json::Value &app)
     {
         exit(-1);
     }
+    drogon::app().setHomePage(app.get("home_page", "index.html").asString());
 }
 static void loadDbClients(const Json::Value &dbClients)
 {

lib/src/HttpAppFrameworkImpl.h

@@ -90,6 +90,7 @@ public:
         resp->setStatusCode(k404NotFound);
         _custom404 = resp;
     }
+    
     const HttpResponsePtr &getCustom404Page()
     {
         return _custom404;
@@ -171,10 +172,13 @@ public:
     virtual void setKeepaliveRequestsNumber(const size_t number) override { _keepaliveRequestsNumber = number; }
     virtual void setPipeliningRequestsNumber(const size_t number) override { _pipeliningRequestsNumber = number; }
     virtual void setGzipStatic(bool useGzipStatic) override { _gzipStaticFlag = useGzipStatic; }
+    bool getGzipStatic() const { return _gzipStaticFlag; }
     virtual void setClientMaxBodySize(size_t maxSize) override { _clientMaxBodySize = maxSize; }
     virtual void setClientMaxWebSocketMessageSize(size_t maxSize) override { _clientMaxWebSocketMessageSize = maxSize; }
-    size_t getClientMaxBodySize() { return _clientMaxBodySize; }
-    size_t getClientMaxWebSocketMessageSize() { return _clientMaxWebSocketMessageSize; }
+    virtual void setHomePage(const std::string &homePageFile) override { _homePageFile = homePageFile; }
+    const std::string &getHomePage() const { return _homePageFile; }
+    size_t getClientMaxBodySize() const { return _clientMaxBodySize; }
+    size_t getClientMaxWebSocketMessageSize() const { return _clientMaxWebSocketMessageSize; }
     virtual std::vector<std::tuple<std::string, HttpMethod, std::string>> getHandlersInfo() const override;
 
     size_t keepaliveRequestsNumber() const { return _keepaliveRequestsNumber; }
@@ -301,6 +305,7 @@ private:
     bool _gzipStaticFlag = true;
     size_t _clientMaxBodySize = 1024 * 1024;
     size_t _clientMaxWebSocketMessageSize = 128 * 1024;
+    std::string _homePageFile = "index.html";
     int _staticFilesCacheTime = 5;
     std::unordered_map<std::string, std::weak_ptr<HttpResponse>> _staticFilesCache;
     std::mutex _staticFilesCacheMutex;

lib/src/HttpControllersRouter.cc

@@ -20,6 +20,23 @@
 
 using namespace drogon;
 
+namespace drogon
+{
+
+static void doWhenNoHandlerFound(const HttpRequestImplPtr &req,
+                                 const std::function<void(const HttpResponsePtr &)> &callback)
+{
+    if (req->path() == "/" && !HttpAppFrameworkImpl::instance().getHomePage().empty())
+    {
+        auto resp = drogon::HttpResponse::newLocationResponse("/" + HttpAppFrameworkImpl::instance().getHomePage());
+        callback(resp);
+        return;
+    }
+    auto resp = drogon::HttpResponse::newNotFoundResponse();
+    callback(resp);
+}
+
+} // namespace drogon
 void HttpControllersRouter::init(const std::vector<trantor::EventLoop *> &ioLoops)
 {
     std::string regString;
@@ -264,16 +281,14 @@ void HttpControllersRouter::route(const HttpRequestImplPtr &req,
         }
         else
         {
-            //No controller found
-            auto res = drogon::HttpResponse::newNotFoundResponse();
-            callback(res);
+            //No handler found
+            doWhenNoHandlerFound(req, callback);
         }
     }
     else
     {
-        //No controller found
-        auto res = drogon::HttpResponse::newNotFoundResponse();
-        callback(res);
+        //No handler found
+        doWhenNoHandlerFound(req, callback);
     }
 }
 

lib/src/HttpResponseImpl.cc

@@ -66,11 +66,11 @@ HttpResponsePtr HttpResponse::newNotFoundResponse()
         return notFoundResp;
     }
 }
-HttpResponsePtr HttpResponse::newLocationRedirectResponse(const std::string &path)
+HttpResponsePtr HttpResponse::newLocationResponse(const std::string &location)
 {
     auto res = std::make_shared<HttpResponseImpl>();
     res->setStatusCode(k302Found);
-    res->redirect(path.c_str());
+    res->redirect(location);
     return res;
 }