Websocket don´t work

[Mike0675]

Describe the bug

I can´t use WebSockets with Async_WebServer_Teensy41.

I adopted a Sketch from ESP32 where it works well.

With Teensy 4.1 the Connection establishes but send no Data to the Client (HRESULT: 0x80072F78).

Im using Windows10, "Websocket Debug Tools", Wireshark

Arduino IDE version 1.8.19
Teensyduino Core v1.58 beta3
QNEthernet library version v0.17.0

Steps to Reproduce

I used Async_AdvancedWebServer Example
and added:

AsyncWebSocket ws("/ws");

void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *WS_Client, AwsEventType type, void *arg, uint8_t *data, size_t len) {

	if (type == WS_EVT_CONNECT) {

		Serial.println("Websocket client connection received");
		WS_Client->text("Hello from ESP32 Server");
	} else if (type == WS_EVT_DISCONNECT) {
		Serial.println("Client disconnected");

	}
}`

In SETUP:

ws.onEvent(onWsEvent);
server.addHandler(&ws);`

In LOOP:

if (millis() > timer + 5000) {
	ws.textAll(String(millis() / 1000));
	timer = millis();
}

Expected behavior

The Server should send back "Hello from Teensy 4.1 Server".
Every 5s the Server should send millis() / 1000.

Actual behavior

With "Websocket Debug Tools" I get (HRESULT: 0x80072F78)
Using Wireshark it seems the OPCODE for Websocket Connection is Wrong.

[Khoi Hoang]

Please post the MRE, as well as all the tests procedures / results so far, to save anybody time to duplicate the issue.

[Khoi Hoang]

Also try to adapt the example from sibling library Async_WebSocketsServer, written for RP2040W AsyncWebServer_RP2040W

[Khoi Hoang]

Hi @Mike0675

I just adapted the Async_WebSocketsServer code and posted in this library as Async_WebSocketsServer for Teensy4_1

The WebSockets Server is working correctly, meaning the WS protocol is handled correctly in this library

---

The terminal debug is

Async_WebSocketsServer on TEENSY 4.1

Starting Async_WebSocketsServer on TEENSY 4.1
 with Teensy4.1 QNEthernet
AsyncWebServer_Teensy41 v1.6.1
Initialize Ethernet using DHCP => Connected! IP address:192.168.2.119
ws[Server: /ws][ClientID: 1] WSClient connected
ws[Server: /ws][ClientID: 1] text-message[len: 13]: Hello, Server
ws[Server: /ws][ClientID: 1] WSClient disconnected
ws[Server: /ws][ClientID: 2] WSClient connected
ws[Server: /ws][ClientID: 2] text-message[len: 13]: Hello, Server
ws[Server: /ws][ClientID: 2] WSClient disconnected
ws[Server: /ws][ClientID: 3] WSClient connected
ws[Server: /ws][ClientID: 3] text-message[len: 13]: Hello, Server

---

The WebSockets Client code using python used to test

AsyncWebServer_Teensy41/examples/Async_WebSocketsServer/WSClient_Python/WSClient.py

Lines 1 to 15 in 4f5238a

 # Run by $ python3.8 WSClient.py 
 # From websocket-client package. Install by $ pip3 install websocket-client 
 import websocket 
 import time 
  
 ws = websocket.WebSocket() 
 #ws.connect("ws://192.168.2.98/ws") 
 ws.connect("ws://192.168.2.77/ws") 
 #ws.connect("ws://192.168.2.103/ws") 
  
 while True: 
     ws.send("Hello, Server") 
     result = ws.recv() 
     print(result) 
     time.sleep(10) 

Just modify to match the IP of the server. In this case 192.168.2.119