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205 Reset Content The server successfully processed the request, asks that the requester reset its document view, and is not returning any content. 206 Partial Content The server is delivering only part of the resource (byte serving) due to a range header sent by the client. The range header is used by HTTP clients to enable resuming of ...
This can be used when a user agent or firewall prevents PUT or DELETE methods from being sent directly (this is either a bug in the software component, which ought to be fixed, or an intentional configuration, in which case bypassing it may be the wrong thing to do). X-HTTP-Method-Override: DELETE: X-ATT-DeviceId [33]
Nginx (pronounced "engine x" [8] / ˌ ɛ n dʒ ɪ n ˈ ɛ k s / EN-jin-EKS, stylized as NGINX or nginx) is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Russian developer Igor Sysoev and publicly released in 2004. [9]
IP restrictions: The server may also restrict access to specific IP addresses or IP ranges. If the user's IP address is not included in the list of permitted addresses, a 403 status code is returned. Server configuration: The server's configuration can be set to prohibit access to certain files, directories, or areas of the website.
Nginx has an integrated http rewrite module, [10] which can be used to perform advanced URL processing and even web-page generation (with the return directive). An example of such advanced use of the rewrite module is mdoc.su, which implements a deterministic URL shortening service entirely with the help of nginx configuration language alone ...
CDN77 supports HTTP/2 using nginx (August 20, 2015). Cloudflare supports HTTP/2 using nginx with SPDY as a fallback for browsers without support, whilst maintaining all security and performance services. [90] Cloudflare was the first major CDN to support HTTP/2 Server Push. [91] AWS CloudFront supports HTTP/2 [92] since September 7, 2016.
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.
A server implements an HSTS policy by supplying a header over an HTTPS connection (HSTS headers over HTTP are ignored). [1] For example, a server could send a header such that future requests to the domain for the next year (max-age is specified in seconds; 31,536,000 is equal to one non-leap year) use only HTTPS: Strict-Transport-Security: max-age=31536000.