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Docs Configuration Lighttpd lighty labs.
Introduced in version 1.4.19 match on the request method. Introduced in version 1.4.19 match on the scheme used by the incoming connection. This is either http or https. match on url path not including host or query-string. match on querystring eg after the? in this type url index.phpmoduleimages. match on the remote IP or a remote Network Warning doesn't work with IPv6 enabled. subsumed by REQUEST_HEADERCookie since 1.4.46 match on Cookie. subsumed by REQUEST_HEADERUser-Agent since 1.4.46 match on User-Agent. subsumed by REQUEST_HEADERAccept-Language since 1.4.46 since 1.4.21 match on Accept-Language. subsumed by REQUEST_HEADERReferer since 1.4.46 match on Referer. Only equal match is supported.
What Is a Host Header? Development content from Windows IT Pro.
Home Development What Is a Host Header? What Is a Host Header? Oct 14 1999 Marnie Hutcheson. Introduced in HTTP 1.1 a host header is a third piece of information that you can use in addition to the IP address and port number to uniquely identify a Web domain or as Microsoft calls it an application server. For example the host header name for the URL http//www.ideva.com is www.ideva.com. An HTML 3.0 or later browser supports HTTP 1.1. The browser includes the host header name you specified in the location field of the request header that the browser sends to the server.
List of HTTP header fields Wikipedia.
X-Forwarded-For client1 proxy1 proxy2. a de facto standard for identifying the original host requested by the client in the Host HTTP request header since the host name and/or port of the reverse proxy load balancer may differ from the origin server handling the request. a de facto standard for identifying the originating protocol of an HTTP request since a reverse proxy or a load balancer may communicate with a web server using HTTP even if the request to the reverse proxy is HTTPS. An alternative form of the header X-ProxyUser-Ip is used by Google clients talking to Google servers.
HTTP/1.1 Header Field Definitions.
The protocol-name is optional if and only if it would be HTTP. The received-by field is normally the host and optional port number of a recipient server or client that subsequently forwarded the message. However if the real host is considered to be sensitive information it MAY be replaced by a pseudonym. If the port is not given it MAY be assumed to be the default port of the received-protocol. Multiple Via field values represents each proxy or gateway that has forwarded the message. Each recipient MUST append its information such that the end result is ordered according to the sequence of forwarding applications.
Host HTTP MDN.
If no port is given the default port for the service requested e.g 80 for an HTTP URL is implied. A Host header field must be sent in all HTTP/1.1 request messages. A 400 Bad Request status code will be sent to any HTTP/1.1 request message that lacks a Host header field or contains more than one. Header type Request header. Forbidden header name yes. the domain name of the server for virtual hosting. TCP port number on which the server is listening. RFC 7230 section 5.4 Host. Hypertext Transfer Protocol HTTP/1.1 Message Syntax and Routing.
Preserving HTTP 1.1 Host headers.
HTTP 1.1 requests often include a Host header which contains the hostname from the client request. This is because a server may use a single IP address or interface to accept requests for multiple DNS hostnames. The Host header identifies the server requested by the client. When a reverse proxy proxies an HTTP 1.1 request between a client and a target server when it makes the request it must add the Host header to the outbound request.
HTTPhost DevCentral Wiki.
This command replaces the BIG-IP 4.X variable http_host. The Host header always contains the requested host name which may be a Host Domain Name string or an IP address and will also contain the requested service port whenever a non-standard port is specified other than 80 for HTTP other than 443 for HTTPS. When present the non-standard port is appended to the requsted name as a numeric string with a colon separating the 2 values just as it would appear in the browser's address bar.
What is http host header? Stack Overflow.
In short You get it right although it's not different URLs that are pointing to the same IP adress but different domains including subdomains. The host Header tells the webserver which virtual host to use if set up. However you can even have the same virtual host using several aliases domains and wildcard-domains. In this case you still have the possibility to read that header manually in your web app if you want to provide different behavior based on different domains addressed. Although not part of the question a fun fact This specification lead to problems with SSL in early days because the web server has to deliver the certificate that corresponds to the domain the client has addressed.
HttpHost Apache HttpCore 4.4.6 API.
Holds all of the variables needed to describe an HTTP connection to a host. This includes remote host name port and scheme. Fields Modifier and Type Field and Description. The default scheme is http. The host to use. The lowercase host for equalsjava.lang.Object and hashCode. The port to use defaults to 1 if not set. Constructors Constructor and Description. Copy constructor for HttpHost.
HTTP_HOST and SERVER_NAME Security Issues Blog ExpressionEngine.
That sounds really convenient but there is a problem. The _SERVER'HTTP_HOST and _SERVER'SERVER_NAME variables can be changed by sending a different Host header when accessing the site. curl H Host notyourdomain.com http//yoursite.com/. Doing that any URLs that used _SERVER'HTTP_HOST or _SERVER'SERVER_NAME would use notyourdomain.com. Taking this further imagine an attacker fills out a password reset form with your email and changes the Host header. The password reset email would then direct you to their site. If youre paying attention to the domain youre fine but normal users dont and thats why phishing attacks work. Another problem that can come from this is cache poisoning.

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