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In computer networking, localhost is a hostname that refers to the current computer used to access it. The name localhost is reserved for loopback purposes. [ 1 ] It is used to access the network services that are running on the host via the loopback network interface.
The Microsoft extension code indicated when Windows Parental Controls are turned on and are blocking access to the requested webpage. [36] 498 Invalid Token (Esri) Returned by ArcGIS for Server. Code 498 indicates an expired or otherwise invalid token. [37] 499 Token Required (Esri) Returned by ArcGIS for Server. Code 499 indicates that a token ...
The character sequence of two slash characters (//) after the string file: denotes that either a hostname or the literal term localhost follows, [3] although this part may be omitted entirely, or may contain an empty hostname. [4] The single slash between host and path denotes the start of the local-path part of the URI and must be present. [5]
The name localhost is a commonly defined hostname for the loopback interface in most TCP/IP systems, resolving to the IP addresses 127.0.0.1 in IPv4 and ::1 for IPv6.As a top-level domain, the name has traditionally been defined statically in host DNS implementations with address records (A and AAAA) pointing to the same loopback addresses.
As such it is similar to the other special domain names, such as .localhost. [1] However, .local has since been designated for use in link-local networking , in applications of multicast DNS (mDNS) [ 2 ] and zero-configuration networking (zeroconf) so that DNS service may be established without local installations of conventional DNS ...
robots.txt is the filename used for implementing the Robots Exclusion Protocol, a standard used by websites to indicate to visiting web crawlers and other web robots which portions of the website they are allowed to visit.
This is useful to resume an interrupted download (when a file is very large), when only a part of a content has to be shown or dynamically added to the already visible part by a browser (i.e. only the first or the following n comments of a web page) in order to spare time, bandwidth and system resources, etc. HTTP/2, HTTP/3
When an HTTP client (generally a web browser) requests a URL that points to a directory structure instead of an actual web page within the directory structure, the web server will generally serve a default page, which is often referred to as a main or "index" page.