Library does not handle server/network failure (disconnect basically). #14
Description
Hi,
I'm using the code from the Client Example for an SSL server.
Most of it works as expected, however - if I shutdown the WebSocket server I'm connected to or even disconnect the network, no event is being triggered.
Surprisingly, even if i call client.available() it returns true, even though the server is shut down or there's no network connection to it...
I'm using an ESP-WROOM-32 board if and an NGinx WebSocket server. The socket server works without any issue with any browser client (tested EDGE, Firefox, Chrome) and these browsers successfully report a server disconnect or so.
As told, code is the one from the client example:
#include <ArduinoWebsockets.h>
#include <WiFi.h>
const char* ssid = "WiFi Name"; //Enter SSID
const char* password = "WiFi Password"; //Enter Password
const char* websockets_server = "wss://url.com:443/ws/"; //server adress and port
using namespace websockets;
void onMessageCallback(WebsocketsMessage message) {
Serial.print("Got Message: ");
Serial.println(message.data());
}
void onEventsCallback(WebsocketsEvent event, String data) {
if(event == WebsocketsEvent::ConnectionOpened) {
Serial.println("Connnection Opened");
} else if(event == WebsocketsEvent::ConnectionClosed) {
Serial.println("Connnection Closed");
} else if(event == WebsocketsEvent::GotPing) {
Serial.println("Got a Ping!");
} else if(event == WebsocketsEvent::GotPong) {
Serial.println("Got a Pong!");
}
Serial.println("Event triggered...");
}
WebsocketsClient client;
void setup() {
Serial.begin(115200);
// Connect to wifi
WiFi.begin(ssid, password);
// Wait some time to connect to wifi
for(int i = 0; i < 10 && WiFi.status() != WL_CONNECTED; i++) {
Serial.println(".");
delay(1000);
}
Serial.println("Connected to WiFi... probably.");
// Setup Callbacks
client.onMessage(onMessageCallback);
client.onEvent(onEventsCallback);
// Connect to server
client.connect(websockets_server);
// Send a message
client.send("This is a nice little message sent from ESP32.");
}
void loop() {
if (client.available()) {
client.poll();
} else {
Serial.println("OOPS!! Client Disconnected...");
delay(5000);
}
}
If there's any detail I can help you with to debug this issue, just let me know.
All the best,
A.