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A .htaccess file is often used to specify security restrictions for a directory, hence the filename "access". The .htaccess file is often accompanied by a .htpasswd file which stores valid usernames and their passwords. [5] URL rewriting Servers often use .htaccess for rewriting long, overly comprehensive URLs to shorter and more memorable ones.
[9] [10] For example, a multi-link multi-variable page generation from a URI like /f101,n61,o56,d/ifconfig is possible, where multiple individual parts like f101 get expanded with the help of regular expressions into variables to signify FreeBSD 10.1-RELEASE and so forth. Hiawatha HTTP server has a URL Toolkit which supports URL rewriting. [11]
URL redirection, also called URL forwarding, is a World Wide Web technique for making a web page available under more than one URL address. When a web browser attempts to open a URL that has been redirected, a page with a different URL is opened.
The comment that this is supported by several webservers is strange, Apache is a continuation of NCSA which developed the .htaccess technology. So, this is mainly an Apache (see references) technology; in the top 5 used Web Server Softwares, Apache and LiteSpeed would be the only two that support it, and LiteSpeed (a fork of apache?) which is a ...
[16]: §10.4.14 414 URI Too Long The URI provided was too long for the server to process. 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
initialize: Code to initialize the login module, usually by storing the parameters passed into appropriate fields of the Class. login: Actually check the credentials provided via an Object that implements the javax.security.auth.Callback interface (e.g. check against a database). This method could prompt the user for their login and password or ...
Diagram of a double POST problem encountered in user agents. Diagram of the double POST problem above being solved by PRG. Post/Redirect/Get (PRG) is a web development design pattern that lets the page shown after a form submission be reloaded, shared, or bookmarked without ill effects, such as submitting the form another time.
Meta refresh is a method of instructing a web browser to automatically refresh the current web page or frame after a given time interval, using an HTML meta element with the http-equiv parameter set to "refresh" and a content parameter giving the time interval in seconds.