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[英]302 redirects do not work in a service worker built with Google Workbox
[英]Service Worker breaking 301 redirects
我在WordPress网站上使用服务工作者,它正在搞乱从https://example.com/page到https://example.com/page/的重定向。
第一次加载后,转到没有尾部斜杠的URL Blink浏览器说“无法访问此站点”,Firefox说“内容已损坏”。
基于我对https://medium.com/@boopathi/service-workers-gotchas-44bec65eab3f#.hf3r4pbcs的解读以及如何更改请求的标题? 我想我必须检测响应是3xx并将重定向模式设置为手动。
然而,根据我的研究,我没有尝试过任何事情。 我该如何解决?
当前服务工作者文件:
var cacheName = 'v14';
var urlsToCache = [
// list of URLs to precache
];
self.addEventListener('install', event => {
function onInstall(event) {
return caches.open(cacheName)
.then(cache => cache.addAll(urlsToCache));
}
event.waitUntil(
onInstall(event)
.then(() => self.skipWaiting())
);
});
self.addEventListener('activate', event => {
function onActivate (event) {
return caches.keys()
.then(cacheKeys => {
var oldCacheKeys = cacheKeys.filter(key => key.indexOf(cacheName) !== 0);
var deletePromises = oldCacheKeys.map(oldKey => caches.delete(oldKey));
return Promise.all(deletePromises);
})
}
event.waitUntil(
onActivate(event)
.then(() => self.clients.claim ())
);
});
self.addEventListener('fetch', event => {
function onFetch (event) {
// Let's not interfere with requests for stuff that doesn't need to be cached
// or could prevent access to admin if it is
if (event.request.url.match(/wp-admin/) || event.request.url.match(/wp-login/) || event.request.url.match(/preview=true/) || event.request.url.match(/wp-includes/) || event.request.url.match(/plugins/) || event.request.url.match(/google-analytics/) || event.request.url.match(/gravatar\.com/) || event.request.url.match(/login/) || event.request.url.match(/admin/) || event.request.method !== 'GET') {
return;
}
// Determine type of asset
var request = event.request,
acceptHeader = request.headers.get('Accept'),
resourceType = 'static';
if(acceptHeader.indexOf('text/html') !== -1) {
resourceType = 'content';
} else if(acceptHeader.indexOf('image') !== -1) {
resourceType = 'image';
}
// Network first for HTML and images
if(resourceType === 'content') {
event.respondWith(fetch(request.url, {
method: request.method,
headers: request.headers,
mode: 'same-origin', // need to set this properly
credentials: request.credentials,
redirect: 'manual'
})
.then(response => addToCache(request, response)) // read through caching
.catch(() => fetchFromCache(event))
.catch(() => offlineResponse(resourceType))
)
}
// Cache first for static assets
else if(resourceType === 'static' || resourceType === 'image') {
event.respondWith(fetchFromCache(event)
.catch(() => fetch(request))
.then(response => addToCache(request, response))
.catch(() => offlineResponse(resourceType))
)
}
}
onFetch(event);
});
function addToCache(request, response) {
if(response.ok) { // only 200s
var copy = response.clone(); // Because responses can only be used once
caches.open(cacheName)
.then(cache => {
cache.put(request, copy);
});
return response;
}
}
function fetchFromCache (event) {
return caches.match(event.request)
.then(response => {
if(!response) {
// A synchronous error that will kick off the catch handler
throw Error('${event.request.url} not found in cache');
}
return response;
});
}
function offlineResponse (resourceType) {
if(resourceType === 'content') {
return caches.match('/offline/');
}
return undefined;
}
当遇到特定网站的错误时,我建议先清除浏览器缓存并删除您保存的网站Cookie。 损坏的内容错误可能是由于在服务器中运行过期的软件引起的。
有关服务工作者的注意事项是,它是一名JavaScript工作者 。 因此,它无法直接访问DOM。 相反,服务工作者可以通过响应通过postMessage发送的消息与其控制的页面进行通信。
您无需执行任何操作来跟踪重定向。 如果请求some/url
并被重定向到some/url/
serviceo worker应该能够得到正确的响应。
但是如果你想手动处理3XX答案,你可以这样做:
self.onfetch = function (event) {
var dontFollowRedirects = new Request(event.request.url, { redirect: 'manual' });
event.respondWith(fetch(dontFollowRedirects)
.then(function (response) {
if (response.status >= 300 && response.status < 400) {
return doSomethingWithRedirection(response);
}
})
);
}
在干净的状态下尝试这个,擦除您的缓存并预先安装Service Worker。
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