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It is the conceptual equivalent to HTTP/1.1 name-based virtual hosting, but for HTTPS. This also allows a proxy to forward client traffic to the right server during TLS/SSL handshake. The desired hostname is not encrypted in the original SNI extension, so an eavesdropper can see which site is being requested.
X-Forwarded-Proto: https: Front-End-Https [31] Non-standard header field used by Microsoft applications and load-balancers: Front-End-Https: on: X-Http-Method-Override [32] Requests a web application to override the method specified in the request (typically POST) with the method given in the header field (typically PUT or DELETE).
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.
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 January 2025. There is 1 pending revision awaiting review. Extension of the HTTP communications protocol to support TLS encryption Internet protocol suite Application layer BGP DHCP (v6) DNS FTP HTTP (HTTP/3) HTTPS IMAP IRC LDAP MGCP MQTT NNTP NTP OSPF POP PTP ONC/RPC RTP RTSP RIP SIP SMTP SNMP SSH ...
OPTIONS The OPTIONS method requests that the target resource transfer the HTTP methods that it supports. This can be used to check the functionality of a web server by requesting '*' instead of a specific resource. TRACE The TRACE method requests that the target resource transfer the received request in the response body.
A general options category. 0 is for control options, and 2 is for debugging and measurement. 1 and 3 are reserved. Option Number: 5: Specifies an option. Option Length: 8: Indicates the size of the entire option (including this field). This field may not exist for simple options. Option Data: Variable: Option-specific data.
An Option-Kind byte of 0 marks the end of options, and is also only one byte. An Option-Kind byte of 2 is used to indicate Maximum Segment Size option, and will be followed by an Option-Length byte specifying the length of the MSS field. Option-Length is the total length of the given options field, including Option-Kind and Option-Length fields.
The Apache HTTP Server (/ ə ˈ p æ tʃ i / ə-PATCH-ee) is a free and open-source cross-platform web server, released under the terms of Apache License 2.0.It is developed and maintained by a community of developers under the auspices of the Apache Software Foundation.