信号R Disonnect在Firefox中延迟

const socket = new WebSocket('wss://example.com/socket');

socket.onopen = function() {
    console.log('WebSocket connection opened');
};

socket.onmessage = function(event) {
    console.log('Message from server:', event.data);
};

socket.onclose = function(event) {
    console.log('WebSocket connection closed', event);
};

socket.onerror = function(error) {
    console.error('WebSocket error:', error);
};

// 心跳机制示例
function heartbeat() {
    clearTimeout(this.pingTimeout);

    // Use `WebSocket#terminate()`, which immediately destroys the connection,
    // instead of `WebSocket#close()`, which waits for the close timer.
    // Delay should be equal to the interval at which your server
    // sends out pings plus a conservative assumption of the latency.
    this.pingTimeout = setTimeout(() => {
        this.terminate();
    }, 30000 + 1000);
}

socket.onopen = heartbeat;
socket.onmessage = heartbeat;
socket.onclose = () => clearTimeout(this.pingTimeout);