Automatically refreshes page when network errors occur
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/551832/1673251/Auto%20Refresh%20on%20Network%20Errors.js
// ==UserScript==
// @name Auto Refresh on Network Errors
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Automatically refreshes page when network errors occur
// @author Assistant Pro
// @match *://*/*
// @grant none
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
const config = {
enableConsoleLogs: true,
refreshDelay: 5000, // 5 seconds delay before refresh
maxRefreshAttempts: 10,
checkInterval: 3000, // Check every 3 seconds
retryDelay: 10000, // Wait 10 seconds between retries
enableSoundAlert: false // Play sound when network recovers
};
let state = {
refreshCount: 0,
lastRefreshTime: 0,
isNetworkError: false,
lastCheckTime: Date.now()
};
// Network error patterns to detect
const networkErrorPatterns = [
"We're having trouble finding that site",
"We can't connect to the server",
"Try again later",
"Check your network connection",
"behind a firewall",
"This site can't be reached",
"Unable to connect",
"Server not found",
"Network Error",
"ERR_CONNECTION_",
"ERR_NAME_NOT_RESOLVED",
"ERR_INTERNET_DISCONNECTED"
];
// Check if current page shows network error
function isNetworkErrorPage() {
// Check page title
const title = document.title.toLowerCase();
if (title.includes("problem loading") || title.includes("not found") || title.includes("unable to connect")) {
return true;
}
// Check body text content
const bodyText = document.body.innerText.toLowerCase();
for (const pattern of networkErrorPatterns) {
if (bodyText.includes(pattern.toLowerCase())) {
return true;
}
}
// Check common error elements
const errorSelectors = [
'[class*="error"]',
'[id*="error"]',
'[class*="offline"]',
'[id*="offline"]',
'.network-error',
'.dns-error',
'.connection-error'
];
for (const selector of errorSelectors) {
const elements = document.querySelectorAll(selector);
for (const element of elements) {
const text = element.innerText.toLowerCase();
for (const pattern of networkErrorPatterns) {
if (text.includes(pattern.toLowerCase())) {
return true;
}
}
}
}
return false;
}
// Check network connectivity
function checkNetworkConnectivity() {
return new Promise((resolve) => {
// Method 1: Navigator online status
if (!navigator.onLine) {
resolve(false);
return;
}
// Method 2: Try to fetch a small resource
const testUrls = [
'https://www.google.com/favicon.ico',
'https://www.cloudflare.com/favicon.ico',
'https://www.microsoft.com/favicon.ico'
];
let successCount = 0;
let completed = 0;
testUrls.forEach(url => {
fetch(url, {
method: 'HEAD',
cache: 'no-cache',
mode: 'no-cors'
})
.then(() => {
successCount++;
})
.catch(() => {})
.finally(() => {
completed++;
if (completed === testUrls.length) {
resolve(successCount > 0);
}
});
});
// Timeout after 5 seconds
setTimeout(() => {
resolve(successCount > 0);
}, 5000);
});
}
// Perform smart refresh
function performSmartRefresh() {
const now = Date.now();
const timeSinceLastRefresh = now - state.lastRefreshTime;
// Don't refresh too frequently
if (timeSinceLastRefresh < config.retryDelay) {
if (config.enableConsoleLogs) console.log(`⏳ Too soon to refresh, waiting... (${Math.round((config.retryDelay - timeSinceLastRefresh)/1000)}s)`);
return;
}
// Check if we've exceeded max attempts
if (state.refreshCount >= config.maxRefreshAttempts) {
if (config.enableConsoleLogs) console.log("❌ Max refresh attempts reached, stopping...");
return;
}
state.refreshCount++;
state.lastRefreshTime = now;
state.isNetworkError = true;
if (config.enableConsoleLogs) {
console.log(`🔄 Auto-refresh attempt ${state.refreshCount}/${config.maxRefreshAttempts}`);
console.log("🌐 Network error detected, refreshing page...");
}
// Play sound alert if enabled
if (config.enableSoundAlert) {
playNotificationSound();
}
// Refresh with a small delay
setTimeout(() => {
window.location.reload();
}, config.refreshDelay);
}
// Play notification sound
function playNotificationSound() {
try {
const audioContext = new (window.AudioContext || window.webkitAudioContext)();
const oscillator = audioContext.createOscillator();
const gainNode = audioContext.createGain();
oscillator.connect(gainNode);
gainNode.connect(audioContext.destination);
oscillator.frequency.value = 800;
oscillator.type = 'sine';
gainNode.gain.setValueAtTime(0.3, audioContext.currentTime);
gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.5);
oscillator.start(audioContext.currentTime);
oscillator.stop(audioContext.currentTime + 0.5);
} catch (error) {
// Sound not supported, continue silently
}
}
// Main monitoring function
function monitorNetworkStatus() {
const now = Date.now();
// Check if we're on a network error page
if (isNetworkErrorPage()) {
if (config.enableConsoleLogs && !state.isNetworkError) {
console.log("🚨 Network error page detected!");
}
// Check if we actually have network connectivity
checkNetworkConnectivity().then(isOnline => {
if (isOnline) {
if (config.enableConsoleLogs) console.log("✅ Network is online, but page failed to load - refreshing...");
performSmartRefresh();
} else {
if (config.enableConsoleLogs) console.log("🌐 Network is offline, waiting for connection...");
// Wait for network to come back online
setTimeout(monitorNetworkStatus, config.retryDelay);
return;
}
});
} else {
// Reset counter if page loaded successfully
if (state.isNetworkError) {
state.isNetworkError = false;
if (config.enableConsoleLogs) console.log("✅ Page loaded successfully! Reset refresh counter.");
state.refreshCount = 0;
}
}
// Continue monitoring
setTimeout(monitorNetworkStatus, config.checkInterval);
}
// Setup event listeners
function setupEventListeners() {
// Listen for online/offline events
window.addEventListener('online', () => {
if (config.enableConsoleLogs) console.log("🌐 Network connection restored!");
if (state.isNetworkError) {
if (config.enableConsoleLogs) console.log("🔄 Network restored, refreshing page...");
setTimeout(() => {
window.location.reload();
}, 2000);
}
});
window.addEventListener('offline', () => {
if (config.enableConsoleLogs) console.log("🌐 Network connection lost!");
state.isNetworkError = true;
});
// Listen for page load errors
window.addEventListener('error', (event) => {
const error = event.error || event;
if (error.toString().includes('Loading') || error.toString().includes('Network')) {
if (config.enableConsoleLogs) console.log("🚨 Page load error detected");
state.isNetworkError = true;
}
});
// Listen for fetch errors
const originalFetch = window.fetch;
window.fetch = function(...args) {
return originalFetch.apply(this, args)
.catch(error => {
if (config.enableConsoleLogs) console.log("🌐 Fetch error:", error);
state.isNetworkError = true;
throw error;
});
};
}
// Initialize
function init() {
if (config.enableConsoleLogs) {
console.log("🔄 Auto Refresh on Network Errors - Started");
console.log("🔧 Will automatically refresh on network errors");
console.log("🌐 Current network status:", navigator.onLine ? "ONLINE" : "OFFLINE");
}
setupEventListeners();
// Start monitoring
setTimeout(monitorNetworkStatus, 3000);
// Add manual refresh button for testing (remove in production)
if (config.enableConsoleLogs) {
const button = document.createElement('button');
button.innerHTML = '🔄 Test Refresh';
button.style.position = 'fixed';
button.style.top = '10px';
button.style.right = '10px';
button.style.zIndex = '9999';
button.style.padding = '10px';
button.style.background = '#007cba';
button.style.color = 'white';
button.style.border = 'none';
button.style.borderRadius = '5px';
button.style.cursor = 'pointer';
button.onclick = () => {
console.log("🧪 Manual refresh triggered");
window.location.reload();
};
document.body.appendChild(button);
}
}
// Start the script
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();