I am a rookie. I also read a lot of http materials on the Internet, but I only saw what he wrote, but I didn t understand what he meant again. The problem is this: currently the cross-domain problem is solved by setting Access-Control-Allow-Origin: *...
how can Angular6 be implemented in conjunction with rxjs when asynchronously requesting background data? watched the video tutorial of Angular4, which is basically the same, but here (asynchronous request for background data) is not consistent in usag...
Request URL: http: xxxxxxx.com:3000 Request Method: OPTIONS Status Code: 204 No Content Remote Address: 127.0.0.1:3000 Referrer Policy: no-referrer-when-downgrade read some related articles, but did not say that options request is the cause of 204 ...
...
axios request can return 200 and data is returned, but the console reports that the cross-domain backend has confirmed that access-control-allow-origin is *, and there is no need for the front end to pass the header field except parameters in header i...
when looking up http pipeline, I found this sentence. I don t understand why non-idempotent requests can t be pipelined. is it because the client cannot guarantee the order in which each request arrives at the server when pipelining the request? ...
There are multiple pictures on the page, and the path is similar to https: image-1257049018.cos.png, which can be displayed and downloaded normally. However, when drawing this picture (remote address) with canvas, it was mistakenly said that the cross...
when springMvc processes HttpRepsonse, set response.setStatus (301) and response.sendRedirect ( " hello ") at the same time;, HTTP response Headers status is 302 when it s the same with changing the positions of the two, so I d like to unders...
1. When you make a request in the system, the Timing you see is the following result. Only 3 requests are concurrent at the same time. from the figure below, the request is suspended. Waiting and Content Download have a total of 134ms, which is very fa...
just encountered a very unclear problem: -sharp B.php ... die("AAAA"); require_once __DIR__ . " .. public A.php"; die("b"); ... can die () come out. I wonder if there is anything special about this package of files, be...
one of my programs will initiate a http request to another project, using the file_get_content function. I need to make sure that the request is made, but I don t need to return a result. Can I set the file_get_content timeout to 1 second? Because of th...
I built a WEB Server, on the embedded device to access through HTTPS, but I found that if the page is not refreshed every few seconds, and then click on the page, the lower left corner of the browser will prompt "secure connection is being established "...
HTTP protocol stateless then HTTP2 can be understood as "HTTP protocol with version 2.0 is stateful " by adding two new features: multiplexing and resettable ? ...
because the website was upgraded to https, and then found that it was impossible to request the interface of http across domains (originally possible) the project was created with vue-cli and the axios, used for asynchronous requests sent requests to t...
Project uses vue-cli family bucket. Since the project has just been upgraded from http to https, the axios, used for asynchronous request has been tested to see if there is a problem with API access. It is found that there is an inexplicable problem: th...
I am a novice. I have just come into contact with the node.js and express frameworks. I have configured routing according to the online tutorial, but there are some problems, as follows: first of all, the file structure is as follows: index.js:...
you can call asynchronous interfaces across domains through jsonp. What s the problem if all or a large number of pages request data through jsonp? I am a front-end, and I am often asked by my back-end developer colleagues that if you have transferre...
scenario: do I need to call an interface in nodejs that takes a long time to process? it may take more than 120s. nodejs http 120s, question: Koa example: const timeoutService = function (time) { time = time || 5000 return n...
was asked in the interview what is the specific difference between http and https? What does have to do with tcp ip? Does it have anything to do with three handshakes? could you please explain it well ? ...
axios always sends two requests and the first time there is an options request, how to get rid of it? the request header contains token ...
when reading Magnus Lie Hetland s python algorithm tutorial, there are some questions. Chapter 2 after-class exercise 2-2 Let s make an assumption (which may be a little impractical): if we allow uninitialization when allocating memory (that is, thi...
Hello, everyone. in the package import rc-scroll-anim , there was no problem with the development in dev environment, but an error was reported when it was run after compilation. After typing log, I found that the content of import in the two modes wa...
the cascade is in hover mode. When the cascade does not have a subdirectory, it is not selected, because when you click to select, the panel moves up and hides. Because hover selects, other options are selected. Demo is in this https: jsfiddle.net 26u...
I use axios.interceptors.request.use(config => { if (getToken()) { config.headers[ token ] = getToken() token-- [ X-Token ]key } else { console.log( token ) } const role = store.state.permission.roleLi...
<el-input style= width:336px;height:20px; placeholder="" v-model="creditCode" @blur="creditInfo" :maxlength=25> < el-input> <el-input style= width:336px;height:20px; ...