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Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.
The XMLHttpRequest identifier is now the de facto standard in all the major browsers, ... Further, only the HEAD, GET and POST request methods are supported, ...
In 2003, Python web frameworks were typically written against only CGI, FastCGI, mod_python, or some other custom API of a specific web server. [6] To quote PEP 333: Python currently boasts a wide variety of web application frameworks, such as Zope, Quixote, Webware, SkunkWeb, PSO, and Twisted Web -- to name just a few.
Mainly used to identify Ajax requests (most JavaScript frameworks send this field with value of XMLHttpRequest); also identifies Android apps using WebView [23] X-Requested-With: XMLHttpRequest: DNT [24] Requests a web application to disable their tracking of a user. This is Mozilla's version of the X-Do-Not-Track header field (since Firefox 4. ...
Often the result of too much data being encoded as a query-string of a GET request, in which case it should be converted to a POST request. Called "Request-URI Too Long" previously. [16]: §10.4.15 415 Unsupported Media Type The request entity has a media type which the server or resource does not support.
It appeared as XMLHTTP in the second version of the MSXML library, [4] [5] which shipped with Internet Explorer 5.0 in March 1999. [ 6 ] The functionality of the Windows XMLHTTP ActiveX control in IE 5 was later implemented by Mozilla Firefox , Safari , Opera , Google Chrome , and other browsers as the XMLHttpRequest JavaScript object. [ 7 ]
In computing, POST is a request method supported by HTTP used by the World Wide Web. By design, the POST request method requests that a web server accepts the data enclosed in the body of the request message, most likely for storing it. [ 1 ]
The XMLHttpRequest (XHR) object, a tool used by Ajax applications for browser–server communication, can also be pressed into service for server–browser Comet messaging by generating a custom data format for an XHR response, and parsing out each event using browser-side JavaScript; relying only on the browser firing the onreadystatechange ...