compiler error

[JoergTiedemann]

I changed from original version 1.x from from me-no-dev to the actual version and I'm not able to compile.
I use platformio (not pioarduino) with ESP32:

[env:esp32dev]
platform = espressif32
board = esp32dev
platform_packages = framework-arduinoespressif32 @ /~https://github.com/espressif/arduino-esp32.git#2.0.16
framework = arduino
monitor_speed = 115200
monitor_rts = 0
monitor_dtr = 0
extra_scripts = pre:preFirmwareVersion.py
	add_lib_info.py
debug_tool = esp-prog
debug_init_break = tbreak setup
lib_compat_mode = strict
lib_ldf_mode = chain
build_flags = 
	-std=c++17
	-std=gnu++17
	-DREBUILD_HTML
	-DDASHBOARD_PATH=dashboard.json -DREBUILD_DASHBOARD
	-DCONFIG_PATH=configuration.json -DREBUILD_CONFIG
	-DCORE_DEBUG_LEVEL=1
	-D DISABLE_FIRESTORE
	-D DISABLE_FIRESTORE_QUERY
	-D DISABLE_STORAGE
	-D DISABLE_FUNCTIONS
	-D DISABLE_OTA
	-D DISABLE_FS
	-D FIREBASE_DISABLE_NATIVE_ETHERNET
	-D USER_SETUP_LOADED=1
	-D ST7735_DRIVER=1
	-D ST7735_BLACKTAB=1
	-D TFT_MOSI=23
	-D TFT_SCLK=18
	-D TFT_CS=5
	-D TFT_DC=2
	-D TFT_RST=-1
	-D LOAD_GLCD=1
	-D SPI_FREQUENCY=27000000
upload_speed = 921600
board_build.f_flash = 80000000L
board_build.partitions = min_spiffs.csv
build_unflags = 
	-std=gnu++11
lib_deps = 
	lorol/LittleFS_esp32@^1.0.6
	paulstoffregen/Time@^1.6.1
	adafruit/DHT sensor library@^1.4.6
	mobizt/FirebaseClient@^1.5.4
	mobizt/FirebaseJson@^3.0.9
	adafruit/Adafruit Unified Sensor@^1.1.15
	bodmer/TFT_eSPI@^2.5.43
	me-no-dev/ESPAsyncWebServer@^3.6.0
	me-no-dev/AsyncTCP@^3.3.2

If I want compile these header file

#ifndef SERVER_H
#define SERVER_H


#include <ESPAsyncWebServer.h>

typedef struct webserver_library_info_t
{
    AsyncWebServerRequest *request;
	String m_strPlatformVersion;
	String m_strFrameworkVersion;
	String m_strSDKVersion;
	String m_strLibraryVersion;

} WebserverLibraryInfo;

typedef void (*WebserverGetLibraryVersionCallback)(WebserverLibraryInfo); 

class webServer
{

private:    
    static void handleFileUpload(AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final);
    static void serveProgmem(AsyncWebServerRequest *request);
    void bindAll();
 public:
    WebserverGetLibraryVersionCallback m_getLibraryVersionCallback = NULL;
    WebserverLibraryInfo m_LibraryVersionInfo; 
    void WifiGetResult(String& JSON,const bool bScan);
    AsyncWebServer server = AsyncWebServer(80);
    AsyncWebSocket ws("/ws");
    ArRequestHandlerFunction requestHandler = serveProgmem;
    void begin(WebserverGetLibraryVersionCallback getLibraryVersionCallback = NULL);
};

extern webServer GUI;

#endif

I got an error at this line:

 AsyncWebSocket ws("/ws");

with the following message:

lib/ESP32 IoT Framework/src/webServer.h:31:23: error: expected identifier before string constant
     AsyncWebSocket ws("/ws");
                       ^~~~~
lib/ESP32 IoT Framework/src/webServer.h:31:23: error: expected ',' or '...' before string constant
lib/ESP32 IoT Framework/src/dashboard.cpp: In member function 'void dashboard::begin(int)':       
lib/ESP32 IoT Framework/src/dashboard.cpp:6:9: error: invalid use of member function 'AsyncWebSocket webServer::ws(int)' (did you forget the '()' ?)
     GUI.ws.onEvent(onWsEvent);
     ~~~~^~
lib/ESP32 IoT Framework/src/dashboard.cpp: In member function 'void dashboard::send()':
lib/ESP32 IoT Framework/src/dashboard.cpp:38:9: error: invalid use of member function 'AsyncWebSocket webServer::ws(int)' (did you forget the '()' ?)
     GUI.ws.binaryAll(buffer, sizeof(buffer));

How I have to configure platformio to compile it as before. I suppose the the library is compatible to version 1.... from me-no-dev
but it seems to be not
Is it possible to use the lib with adruino 2.x Expressif IDF 4.x and platformio ?
What has to be changed to use it as in version 1.x from the original me-no-dev ?
Any help would be great

[mathieucarbou]

me-no-dev/ESPAsyncWebServer@^3.6.0
me-no-dev/AsyncTCP@^3.3.2

Please look at the doc: the dependencies are wrong ;-)

[JoergTiedemann]

I changed this according to the docs but same issue
Platform.ini:

lib_deps = 
	lorol/LittleFS_esp32@^1.0.6
	paulstoffregen/Time@^1.6.1
	adafruit/DHT sensor library@^1.4.6
	mobizt/FirebaseClient@^1.5.4
	mobizt/FirebaseJson@^3.0.9
	adafruit/Adafruit Unified Sensor@^1.1.15
	bodmer/TFT_eSPI@^2.5.43
	ESP32Async/ESPAsyncWebServer@^3.7.0
	ESP32Async/AsyncTCP@^3.3.5

exactly same compiler error

[JoergTiedemann]

What could the reason for the compiler error ?

[mathieucarbou]

I do not know, but for sure not caused by the line AsyncWebSocket ws("/ws"); !

FYI (and unrelated probably ?), you should think about moving to latest arduino core 2, or even better, 3 (we only support latst versions of both).

platform = espressif32@6.10.0
No need for platform_packages

[JoergTiedemann]

I solved the problem, thanks to your help
If I define the websocket and webserver variable not as a class member like here:

class webServer
{

 public:
   AsyncWebServer server = AsyncWebServer(80);
   AsyncWebSocket ws("/ws");
}

but instead as global variable like this

AsyncWebSocket ws("/ws");
AsyncWebServer server(80);

it compiles and runs without any problems
What is the reason ?
This is definitly incompatible to the old original version and I think you should add a comment in the documentation about that

[vortigont]

This is wrong cpp

class webServer
{
 public:
   AsyncWebServer server = AsyncWebServer(80);
   AsyncWebSocket ws("/ws");
}

do it like this:

class WebServer
{
 public:
   AsyncWebServer server;
   AsyncWebSocket ws;
   WebServer() : server(80), ws("/ws") {};
}

[JoergTiedemann]

Ok I will try this,
But for sure this is incompatible to the original version 1.x and I think there should be a comment added in the documentation

[mathieucarbou]

Ok I will try this, But for sure this is incompatible to the original version 1.x and I think there should be a comment added in the documentation

Do you mind contributing a PR, or updating the wiki ?

[mathieucarbou]

or maybe you got that before and you dropped = AsyncWebSocket ?

class Foo {
public:
  AsyncWebServer server = AsyncWebServer(80);
  AsyncWebSocket ws = AsyncWebSocket("/ws");
};