133 lines
3.5 KiB
TypeScript
133 lines
3.5 KiB
TypeScript
// 网络管理：智能检测并切换内外网
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const INTERNAL_HOST = '192.168.58.20:4320'
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function getExternalHost(): string {
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if (typeof window === 'undefined') return ''
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return window.location.host
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}
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export interface NetworkStatus {
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isInternal: boolean
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host: string
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}
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let currentNetwork: NetworkStatus | null = null
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let isChecking = false
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// 检测内网是否可达
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async function checkInternalNetwork(): Promise<boolean> {
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try {
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const controller = new AbortController()
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const timeoutId = setTimeout(() => controller.abort(), 2000) // 2秒超时
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const response = await fetch(`http://${INTERNAL_HOST}/api/health`, {
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method: 'HEAD',
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signal: controller.signal,
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mode: 'no-cors' // 避免CORS问题
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})
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clearTimeout(timeoutId)
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return true // 如果请求没有抛出错误，说明内网可达
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} catch (error) {
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// 网络不可达或超时
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return false
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}
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}
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// 初始化网络检测
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export async function initializeNetwork(): Promise<NetworkStatus> {
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if (typeof window === 'undefined') {
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return { isInternal: false, host: '' }
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}
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if (isChecking && currentNetwork) {
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return currentNetwork
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}
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isChecking = true
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const externalHost = getExternalHost()
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try {
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// 当前如果是访问内网地址，直接使用内网
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if (window.location.hostname === '192.168.58.20') {
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currentNetwork = {
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isInternal: true,
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host: INTERNAL_HOST
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}
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return currentNetwork
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}
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// 当前访问的是公网或localhost，尝试检测内网
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const isInternalAvailable = await checkInternalNetwork()
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if (isInternalAvailable) {
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// 内网可达，切换到内网
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currentNetwork = {
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isInternal: true,
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host: INTERNAL_HOST
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}
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console.log('✅ 内网可达，已切换到内网模式')
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} else {
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// 内网不可达，使用当前网络（公网）
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currentNetwork = {
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isInternal: false,
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host: externalHost
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}
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console.log('⚠️ 内网不可达，使用公网模式')
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}
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} catch (error) {
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console.error('网络检测失败:', error)
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// 检测失败，使用当前网络
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currentNetwork = {
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isInternal: false,
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host: externalHost
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}
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} finally {
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isChecking = false
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}
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return currentNetwork
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}
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// 获取当前网络状态
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export function getNetworkStatus(): NetworkStatus {
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if (!currentNetwork) {
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const externalHost = getExternalHost()
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return { isInternal: false, host: externalHost }
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}
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return currentNetwork
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}
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// 获取API基础URL
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export function getApiBaseUrl(): string {
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if (!currentNetwork) {
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return '' // 使用相对路径
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}
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return currentNetwork.isInternal ? `http://${currentNetwork.host}` : ''
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}
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// 定期检测网络（可选，用于自动重连）
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export function startNetworkMonitoring(intervalMs: number = 30000) {
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setInterval(async () => {
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// 如果当前使用公网，定期尝试切换回内网
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if (currentNetwork && !currentNetwork.isInternal) {
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const isInternalAvailable = await checkInternalNetwork()
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if (isInternalAvailable) {
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currentNetwork = {
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isInternal: true,
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host: INTERNAL_HOST
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}
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console.log('🔄 已自动切换回内网模式')
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// 触发页面刷新或状态更新
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if (typeof window !== 'undefined') {
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window.dispatchEvent(new CustomEvent('network-changed', {
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detail: currentNetwork
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}))
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}
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}
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}
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}, intervalMs)
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}
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