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http2 protocol frame format We know that network transmission is in binary form, so the transmission at the bottom of all protocols is also binary. So the problem comes. The client sends a packet to the server. How does the server know whether the packet is completed or still being sent? Or, if a data packet is too large, the client needs to b ...

HTTP HTTP Request Client - Request - Server Baidu: Request URL:https://www.baidu.com/Request Address Request Method:GET get Method/post Method Status Code:200 OK Status code: 200 Remote(Remote) Address:14.215.177.39:443 Accept:text/html Accept-Encoding:gzip, deflate, br Accept-Language:zh-CN,zh;q=0.9 language Cache-Control:ma ...

Brief description of three communication models: (1) Polling: The client sends requests to the server periodically and continuously at high frequency: Client request - server response - disconnect. The number of requests QPS is relatively frequent, and the configuration requirements of client and server are relatively high (2) Long polling: Th ...

Ajax Ajax concepts Ajax(Asynchronous JavaScript and XML): asynchronous JavaScript and XML effect Using Ajax, the page can be updated without refresh, the page can be submitted asynchronously, and the user experience can be improved essence Use a special object (XMLHttpRequest) provided by the browser to send a request to the server asynch ...

Republish, redistribute and redistribute: When there are two routing protocols or different processes of the same in a network; Protocols, processes, databases and information are independent and not shared; Redistributing technology can share routing entries between two protocols or two processes to achieve the accessibility of the whole netw ...

1. Environmental preparation use postman client online debugging use Postjason tool You can first understand the following knowledge: The difference between HTTP request method get and post Url describes a resource on the network, and get, post, put and delete correspond to four operations: query, change, add and delete. Get is use ...

Deep understanding of cross domain issues In this article, you will learn: What is homology, what is cross domain, what is source, and how to cross domain 1. Software description Demo using web Services: django3.2 python3.9 vue 2 2. Problem description What is cross domain CORSWhat is homology strategyHow to implement cross domain 3. P ...

1 response object 1.1 overview of response objects 1.1.1 about response Response, which indicates that the server has received the request and has completed the processing, and informs the user of the processing result. In short, it means that the server informs the client of the processing result of the request. In B/S architecture, the ...

I Single choice questions (11 questions in total, 100.0 points) 1[2009] FTP Transfer between client and server FTP Command, the connection used is (). A,Based on TCP Control connection above B,Based on TCP Data connection on C,Based on UDP Control connection above D,Based on UDP Data connection on Correct answer: A FTP uses TCP 2[2010]If t ...

Transfer from https://developer.mozilla.org/zh-CN/docs/Web/HTTP/CORS   Cross source resource sharing( CORS) ( Or commonly translated as cross domain resource sharing) is based on HTTP Header mechanism, which allows the server to identify other than itself origin (domain, protocol and port), so that the browser can access and load these ...