IPdotSetAF · IPdotSetAF · May 1, 2025 · Apr 29, 2025 · Apr 29, 2025 · May 1, 2025
diff --git a/README.md b/README.md
@@ -37,6 +37,10 @@ It will provide a webpage for updating the firmware/filesystem of `ESP8266` or `
 - Update credentials customization (default: `No credentials`)
     - Username
     - Password
+- Update Events:
+    - onUpdateBegin
+    - onUpdateEnd
+- Force Aborting Update using events 
 - FileSystem Options:
     - SPIFFS
     - LittleFS
@@ -60,25 +64,44 @@ This Library is available in `Arduino Library Repository` and `PIO` and you can
 ```
 2. Create an object from `ESPAsyncHTTPUpdateServer`
 ``` C++
-ESPAsyncHTTPUpdateServer _updateServer;
-AsyncWebServer _server(80);
+ESPAsyncHTTPUpdateServer updateServer;
+AsyncWebServer server(80);
 ```
 3. Setup the update server before starting the webServer
 ``` C++
-_updateServer.setup(&_server);
-_server.begin();
+updateServer.setup(&server);
+server.begin();
 ``` 
 #### Custom Route
 ``` C++
-_updateServer.setup(&_server, "/customroute");
+updateServer.setup(&server, "/customroute");
 ```
 #### Credentials
 ``` C++
-_updateServer.setup(&_server, "username", "password");
+updateServer.setup(&server, "username", "password");
 ```
 or
 ``` C++
-_updateServer.setup(&_server, "/customroute", "username", "password");
+updateServer.setup(&server, "/customroute", "username", "password");
+```
+#### Events
+```c++
+updateServer.onUpdateBegin = [](const UpdateType type, int &result)
+    {      
+        //...
+    };
+
+updateServer.onUpdateEnd = [](const UpdateType type, int &result)
+    {
+        //...
+    };
+```
+#### Aborting the update
+```c++
+updateServer.onUpdateBegin = [](const UpdateType type, int &result)
+    {      
+        result = UpdateResult::UPDATE_ABORT;
+    };
 ```
 
 ### Styling and Customizing OTA Page

diff --git a/examples/simple_server/simple_server.ino b/examples/simple_server/simple_server.ino
@@ -48,6 +48,18 @@ void setup() {
 
     //setup the updateServer with credentials
     updateServer.setup(&server, "admin", "admin");
+    //hook to update events if you need to
+    updateServer.onUpdateBegin = [](const UpdateType type, int &result)
+    {
+        //you can force abort the update like this if you need to:
+        //result = UpdateResult::UPDATE_ABORT;        
+        Serial.println("Update started : " + String(type));
+    };
+    updateServer.onUpdateEnd = [](const UpdateType type, int &result)
+    {
+        Serial.println("Update finished : " + String(type) + " result: " + String(result));
+    };
+
     server.begin();
 }
 

diff --git a/src/ESPAsyncHTTPUpdateServer.cpp b/src/ESPAsyncHTTPUpdateServer.cpp
@@ -78,7 +78,11 @@ void ESPAsyncHTTPUpdateServer::setup(AsyncWebServer *server, const String &path,
             if(_username != emptyString && _password != emptyString)
                 if( !request->authenticate(_username.c_str(), _password.c_str()))
                     return request->requestAuthentication();
+#ifdef ESP32
+            AsyncWebServerResponse* response = request->beginResponse(200, "text/html", serverIndex, sizeof(serverIndex));
+#else
             AsyncWebServerResponse* response = request->beginResponse_P(200, "text/html", serverIndex, sizeof(serverIndex));
+#endif
             response->addHeader("Content-Encoding", "gzip");
             request->send(response); });
 
@@ -105,29 +109,37 @@ void ESPAsyncHTTPUpdateServer::setup(AsyncWebServer *server, const String &path,
         if (!_authenticated)
             return request->requestAuthentication();
 
-        if (Update.hasError())
+        if (_updateResult != UpdateResult::UPDATE_OK)
         {
-            AsyncWebServerResponse *response = request->beginResponse(200, F("text/html"), String(F("Update error: ")) + _updaterError);
+            AsyncWebServerResponse *response = request->beginResponse(200, F("text/html"), Update.hasError() ? String(F("Update error: ")) + _updaterError : "Update aborted by server.");
             response->addHeader("Access-Control-Allow-Headers", "*");
             response->addHeader("Access-Control-Allow-Origin", "*");
             response->addHeader("Connection", "close");
             request->send(response);
         }
         else
         {
+#ifdef ESP32
+            request->send(200, PSTR("text/html"), successResponse);
+#else
             request->send_P(200, PSTR("text/html"), successResponse);
-            restartTimer.once_ms(1000, ESP.restart);
+#endif
+            Log("Rebooting...\n");
+            restartTimer.once_ms(1000,[]{ ESP.restart(); });
         } },
         [&](AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final)
         {
             // handler for the file upload, gets the sketch bytes, and writes
             // them through the Update object
 
-            String inputName = request->getParam("name")->value();
+            _updateType = request->getParam("name")->value() == "filesystem"?
+                    UpdateType::FILE_SYSTEM :
+                    UpdateType::FIRMWARE;
 
             if (!index)
             {
                 _updaterError.clear();
+
 #ifdef ESPASYNCHTTPUPDATESERVER_DEBUG
                 ESPASYNCHTTPUPDATESERVER_SerialOutput.setDebugOutput(true);
 #endif
@@ -137,13 +149,27 @@ void ESPAsyncHTTPUpdateServer::setup(AsyncWebServer *server, const String &path,
                     Log("Unauthenticated Update\n");
                     return;
                 }
+
+                if (onUpdateBegin)
+                {
+                    _updateResult = UpdateResult::UPDATE_OK;
+                    onUpdateBegin(_updateType, _updateResult);
+                    if (_updateResult != UpdateResult::UPDATE_OK)
+                    {
+                        Log("Update aborted by server: %d\n", _updateResult);
+                        if(onUpdateEnd)
+                            onUpdateEnd(_updateType, _updateResult);
+                        return;
+                    }
+                }
+
                 Log("Update: %s\n", filename.c_str());
 #ifdef ESP8266
                 Update.runAsync(true);
 #endif
-                if (inputName == "filesystem")
+                if (_updateType == UpdateType::FILE_SYSTEM)
                 {
-                    Log("updating filesystem");
+                    Log("updating filesystem\n");
 #ifdef ESP8266
                     int command = U_FS;
                     size_t fsSize = ((size_t)FS_end - (size_t)FS_start);
@@ -165,25 +191,28 @@ void ESPAsyncHTTPUpdateServer::setup(AsyncWebServer *server, const String &path,
                 }
                 else
                 {
-                    Log("updating flash");
+                    Log("updating flash\n");
                     uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
                     if (!Update.begin(maxSketchSpace, U_FLASH)) // start with max available size
                         _setUpdaterError();
                 }
             }
 
-            if (_authenticated && len && !_updaterError.length())
+            if (_authenticated && len && _updateResult == UpdateResult::UPDATE_OK)
             {
                 Log(".");
                 if (Update.write(data, len) != len)
                     _setUpdaterError();
             }
 
-            if (_authenticated && final && !_updaterError.length())
+            if (_authenticated && final && _updateResult == UpdateResult::UPDATE_OK)
             {
                 if (Update.end(true))
                 { // true to set the size to the current progress
-                    Log("Update Success: \nRebooting...\n");
+                    Log("Update Success.\n");
+                    _updateResult = UpdateResult::UPDATE_OK;
+                    if(onUpdateEnd)
+                        onUpdateEnd(_updateType, _updateResult);
                 }
                 else
                     _setUpdaterError();
@@ -204,4 +233,8 @@ void ESPAsyncHTTPUpdateServer::_setUpdaterError()
     StreamString str;
     Update.printError(str);
     _updaterError = str.c_str();
+
+    _updateResult = UpdateResult::UPDATE_ERROR;
+    if(onUpdateEnd)
+        onUpdateEnd(_updateType, _updateResult);
 }
diff --git a/src/ESPAsyncHTTPUpdateServer.h b/src/ESPAsyncHTTPUpdateServer.h
@@ -3,9 +3,27 @@
 
 #include <ESPAsyncWebServer.h>
 
+enum UpdateType
+{
+    FIRMWARE,
+    FILE_SYSTEM
+};
+
+enum UpdateResult
+{
+    UPDATE_OK,
+    UPDATE_ABORT,
+    UPDATE_ERROR,
+};
+
+typedef void (*ESPAsyncHTTPUpdateServer_event)(const UpdateType type, int &result);
+
 class ESPAsyncHTTPUpdateServer
 {
 public:
+    ESPAsyncHTTPUpdateServer_event onUpdateBegin = NULL;
+    ESPAsyncHTTPUpdateServer_event onUpdateEnd = NULL;
+
     ESPAsyncHTTPUpdateServer();
 
     void setup(AsyncWebServer *server)
@@ -40,6 +58,8 @@ class ESPAsyncHTTPUpdateServer
     String _password;
     bool _authenticated;
     String _updaterError;
+    UpdateType _updateType;
+    int _updateResult;
 };
 
 #endif