Package net.lenni0451.commons.httpclient.constants

Class Headers

  • public class Headers
extends java.lang.Object

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String ACCEPT
      Informs the server about the mime types of data that can be sent back.
      static java.lang.String ACCEPT_CH
      Servers can advertise support for Client Hints using the Accept-CH header field or an equivalent HTML <meta> element with http-equiv attribute.
      static java.lang.String ACCEPT_ENCODING
      The encoding algorithm, usually a compression algorithm, that can be used on the resource sent back.
      static java.lang.String ACCEPT_LANGUAGE
      Informs the server about the human language the server is expected to send back.
      static java.lang.String ACCEPT_PUSH_POLICY
      A client can express the desired push policy for a request by sending an Accept-Push-Policy header field in the request.
      static java.lang.String ACCEPT_RANGES
      Indicates if the server supports range requests, and if so in which unit the range can be expressed.
      static java.lang.String ACCEPT_SIGNATURE
      A client can send the Accept-Signature header field to indicate intention to take advantage of any available signatures and to indicate what kinds of signatures it supports.
      static java.lang.String ACCESS_CONTROL_ALLOW_CREDENTIALS
      Indicates whether the response to the request can be exposed when the credentials flag is true.
      static java.lang.String ACCESS_CONTROL_ALLOW_HEADERS
      Used in response to a preflight request to indicate which HTTP headers can be used when making the actual request.
      static java.lang.String ACCESS_CONTROL_ALLOW_METHODS
      Specifies the methods allowed when accessing the resource in response to a preflight request.
      static java.lang.String ACCESS_CONTROL_ALLOW_ORIGIN
      Indicates whether the response can be shared.
      static java.lang.String ACCESS_CONTROL_EXPOSE_HEADERS
      Indicates which headers can be exposed as part of the response by listing their names.
      static java.lang.String ACCESS_CONTROL_MAX_AGE
      Indicates how long the results of a preflight request can be cached.
      static java.lang.String ACCESS_CONTROL_REQUEST_HEADERS
      Used when issuing a preflight request to let the server know which HTTP headers will be used when the actual request is made.
      static java.lang.String ACCESS_CONTROL_REQUEST_METHOD
      Used when issuing a preflight request to let the server know which HTTP method will be used when the actual request is made.
      static java.lang.String AGE
      The time, in seconds, that the object has been in a proxy cache.
      static java.lang.String ALLOW
      Lists the set of HTTP request methods supported by a resource.
      static java.lang.String ALT_SVC
      Used to list alternate ways to reach this service.
      static java.lang.String ALT_USED
      Used to identify the alternative service in use.
      static java.lang.String AUTHORIZATION
      Contains the credentials to authenticate a user-agent with a server.
      static java.lang.String CACHE_CONTROL
      Directives for caching mechanisms in both requests and responses.
      static java.lang.String CLEAR_SITE_DATA
      Clears browsing data (e.g. cookies, storage, cache) associated with the requesting website.
      static java.lang.String CONNECTION
      Controls whether the network connection stays open after the current transaction finishes.
      static java.lang.String CONTENT_DISPOSITION
      Indicates if the resource transmitted should be displayed inline (default behavior without the header), or if it should be handled like a download and the browser should present a "Save As" dialog.
      static java.lang.String CONTENT_ENCODING
      Used to specify the compression algorithm.
      static java.lang.String CONTENT_LANGUAGE
      Describes the human language(s) intended for the audience, so that it allows a user to differentiate according to the users' own preferred language.
      static java.lang.String CONTENT_LENGTH
      The size of the resource, in decimal number of bytes.
      static java.lang.String CONTENT_LOCATION
      Indicates an alternate location for the returned data.
      static java.lang.String CONTENT_RANGE
      Indicates where in a full body message a partial message belongs.
      static java.lang.String CONTENT_SECURITY_POLICY
      Controls resources the user agent is allowed to load for a given page.
      static java.lang.String CONTENT_SECURITY_POLICY_REPORT_ONLY
      Allows web developers to experiment with policies by monitoring, but not enforcing, their effects.
      static java.lang.String CONTENT_TYPE
      Indicates the media type of the resource.
      static java.lang.String COOKIE
      Contains stored HTTP cookies previously sent by the server with the SET_COOKIE header.
      static java.lang.String CRITICAL_CH
      Servers use Critical-CH along with ACCEPT_CH to specify that accepted client hints are also critical client hints.
      static java.lang.String CROSS_ORIGIN_EMBEDDER_POLICY
      Allows a server to declare an embedder policy for a given document.
      static java.lang.String CROSS_ORIGIN_OPENER_POLICY
      Prevents other domains from opening/controlling a window.
      static java.lang.String CROSS_ORIGIN_RESOURCE_POLICY
      Prevents other domains from reading the response of the resources to which this header is applied.
      static java.lang.String DATE
      Contains the date and time at which the message was originated.
      static java.lang.String DEVICE_MEMORY
      Approximate amount of available client RAM memory.
      This is part of the Device Memory API.
      static java.lang.String DOWNLINK
      Approximate bandwidth of the client's connection to the server, in Mbps.
      This is part of the Network Information API.
      static java.lang.String EARLY_DATA
      Indicates that the request has been conveyed in TLS early data.
      static java.lang.String ECT
      The effective connection type ("network profile") that best matches the connection's latency and bandwidth.
      This is part of the Network Information API.
      static java.lang.String ETAG
      A unique string identifying the version of the resource.
      static java.lang.String EXPECT
      Indicates expectations that need to be fulfilled by the server to properly handle the request.
      static java.lang.String EXPIRES
      The date/time after which the response is considered stale.
      static java.lang.String FORWARDED
      Contains information from the client-facing side of proxy servers that is altered or lost when a proxy is involved in the path of the request.
      static java.lang.String FROM
      Contains an Internet email address for a human user who controls the requesting user agent.
      static java.lang.String HOST
      Specifies the domain name of the server (for virtual hosting), and (optionally) the TCP port number on which the server is listening.
      static java.lang.String IF_MATCH
      Makes the request conditional, and applies the method only if the stored resource matches one of the given ETags.
      static java.lang.String IF_MODIFIED_SINCE
      Makes the request conditional, and expects the resource to be transmitted only if it has been modified after the given date.
      This is used to transmit data only when the cache is out of date.
      static java.lang.String IF_NONE_MATCH
      Makes the request conditional, and applies the method only if the stored resource doesn't match any of the given ETags.
      This is used to update caches (for safe requests), or to prevent uploading a new resource when one already exists.
      static java.lang.String IF_RANGE
      Creates a conditional range request that is only fulfilled if the given etag or date matches the remote resource.
      static java.lang.String IF_UNMODIFIED_SINCE
      Makes the request conditional, and expects the resource to be transmitted only if it has not been modified after the given date.
      This ensures the coherence of a new fragment of a specific range with previous ones, or to implement an optimistic concurrency control system when modifying existing documents.
      static java.lang.String KEEP_ALIVE
      Controls how long a persistent connection should stay open.
      static java.lang.String LAST_MODIFIED
      The last modification date of the resource, used to compare several versions of the same resource.
      static java.lang.String LINK
      This entity-header field provides a means for serializing one or more links in HTTP headers.
      static java.lang.String LOCATION
      Indicates the URL to redirect a page to.
      static java.lang.String MAX_FORWARDS
      When using https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/TRACE, indicates the maximum number of hops the request can do before being reflected to the sender.
      static java.lang.String NEL
      Defines a mechanism that enables developers to declare a network error reporting policy.
      static java.lang.String ORIGIN
      Indicates where a fetch originates from.
      static java.lang.String ORIGIN_ISOLATION
      Provides a mechanism to allow web applications to isolate their origins.
      static java.lang.String PERMISSIONS_POLICY
      Provides a mechanism to allow and deny the use of browser features in a website's own frame, and in iframes that it embeds.
      static java.lang.String PRAGMA
      Implementation-specific header that may have various effects anywhere along the request-response chain.
      Used for backwards compatibility with HTTP/1.0 caches where the Cache-Control header is not yet present.
      static java.lang.String PROXY_AUTHENTICATE
      Defines the authentication method that should be used to access a resource behind a proxy server.
      static java.lang.String PROXY_AUTHORIZATION
      Contains the credentials to authenticate a user agent with a proxy server.
      static java.lang.String PUSH_POLICY
      A Push-Policy defines the server behavior regarding push when processing a request.
      static java.lang.String RANGE
      Indicates the part of a document that the server should return.
      static java.lang.String REFERER
      The address of the previous web page from which a link to the currently requested page was followed.
      static java.lang.String REFERRER_POLICY
      Governs which referrer information sent in the REFERER header should be included with requests made.
      static java.lang.String REFRESH
      Directs the browser to reload the page or redirect to another.
      static java.lang.String REPORT_TO
      Used to specify a server endpoint for the browser to send warning and error reports to.
      static java.lang.String RETRY_AFTER
      Indicates how long the user agent should wait before making a follow-up request.
      static java.lang.String RTT
      Application layer round trip time (RTT) in milliseconds, which includes the server processing time.
      This is part of the Network Information API.
      static java.lang.String SAVE_DATA
      A string on that indicates the user agent's preference for reduced data usage.
      static java.lang.String SEC_CH_UA
      User agent's branding and version.
      static java.lang.String SEC_CH_UA_ARCH
      User agent's underlying platform architecture.
      static java.lang.String SEC_CH_UA_BITNESS
      User agent's underlying CPU architecture bitness (for example "64" bit).
      static java.lang.String SEC_CH_UA_FULL_VERSION_LIST
      Full version for each brand in the user agent's brand list.
      static java.lang.String SEC_CH_UA_MOBILE
      User agent is running on a mobile device or, more generally, prefers a "mobile" user experience.
      static java.lang.String SEC_CH_UA_MODEL
      User agent's device model.
      static java.lang.String SEC_CH_UA_PLATFORM
      User agent's underlying operation system/platform.
      static java.lang.String SEC_CH_UA_PLATFORM_VERSION
      User agent's underlying operation system version.
      static java.lang.String SEC_CH_UA_PREFERS_COLOR_SCHEME
      User's preference of dark or light color scheme.
      static java.lang.String SEC_CH_UA_PREFERS_REDUCED_MOTION
      User's preference to see fewer animations and content layout shifts.
      static java.lang.String SEC_FETCH_DEST
      Indicates the request's destination.
      static java.lang.String SEC_FETCH_MODE
      Indicates the request's mode to a server.
      static java.lang.String SEC_FETCH_SITE
      Indicates the relationship between a request initiator's origin and its target's origin.
      static java.lang.String SEC_FETCH_USER
      Indicates whether or not a navigation request was triggered by user activation.
      static java.lang.String SEC_GPC
      Indicates whether the user consents to a website or service selling or sharing their personal information with third parties.
      static java.lang.String SEC_PURPOSE
      Indicates the purpose of the request, when the purpose is something other than immediate use by the user-agent.
      The header currently has one possible value, prefetch, which indicates that the resource is being fetched preemptively for a possible future navigation.
      static java.lang.String SERVER
      Contains information about the software used by the origin server to handle the request.
      static java.lang.String SERVER_TIMING
      Communicates one or more metrics and descriptions for the given request-response cycle.
      static java.lang.String SERVICE_WORKER_ALLOWED
      Used to remove the path restriction by including this header in the response of the Service Worker script.
      static java.lang.String SERVICE_WORKER_NAVIGATION_PRELOAD
      A request header sent in preemptive request to fetch() a resource during service worker boot.
      The value, which is set with NavigationPreloadManager.setHeaderValue()", can be used to inform a server that a different resource should be returned than in a normal fetch() operation.
      static java.lang.String SET_COOKIE
      Send cookies from the server to the user-agent.
      static java.lang.String SIGNATURE
      The Signature header field conveys a list of signatures for an exchange, each one accompanied by information about how to determine the authority of and refresh that signature.
      static java.lang.String SIGNED_HEADERS
      The Signed-Headers header field identifies an ordered list of response header fields to include in a signature.
      static java.lang.String SOURCEMAP
      Links generated code to a source map.
      static java.lang.String STRICT_TRANSPORT_SECURITY
      Force communication using HTTPS instead of HTTP.
      static java.lang.String SUPPORTS_LOADING_MODE
      Set by a navigation target to opt-in to using various higher-risk loading modes.
      For example, cross-origin, same-site prerendering requires a Supports-Loading-Mode value of credentialed-prerender.
      static java.lang.String TE
      Specifies the transfer encodings the user agent is willing to accept.
      static java.lang.String TIMING_ALLOW_ORIGIN
      Specifies origins that are allowed to see values of attributes retrieved via features of the Resource Timing API, which would otherwise be reported as zero due to cross-origin restrictions.
      static java.lang.String TRAILER
      Allows the sender to include additional fields at the end of chunked message.
      static java.lang.String TRANSFER_ENCODING
      Specifies the form of encoding used to safely transfer the resource to the user.
      static java.lang.String UPGRADE
      This HTTP/1.1 (only) header can be used to upgrade an already established client/server connection to a different protocol (over the same transport protocol).
      For example, it can be used by a client to upgrade a connection from HTTP 1.1 to HTTP 2.0, or an HTTP or HTTPS connection into a WebSocket.
      static java.lang.String UPGRADE_INSECURE_REQUESTS
      Sends a signal to the server expressing the client's preference for an encrypted and authenticated response, and that it can successfully handle the upgrade-insecure-requests directive.
      static java.lang.String USER_AGENT
      Contains a characteristic string that allows the network protocol peers to identify the application type, operating system, software vendor or software version of the requesting software user agent.
      static java.lang.String VARY
      Determines how to match request headers to decide whether a cached response can be used rather than requesting a fresh one from the origin server.
      static java.lang.String VIA
      Added by proxies, both forward and reverse proxies, and can appear in the request headers and the response headers.
      static java.lang.String WARNING
      General warning information about possible problems.
      static java.lang.String WWW_AUTHENTICATE
      Defines the authentication method that should be used to access a resource.
      static java.lang.String X_CONTENT_TYPE_OPTIONS
      Disables MIME sniffing and forces browser to use the type given in CONTENT_TYPE.
      static java.lang.String X_DNS_PREFETCH_CONTROL
      Controls DNS prefetching, a feature by which browsers proactively perform domain name resolution on both links that the user may choose to follow as well as URLs for items referenced by the document, including images, CSS, JavaScript, and so forth.
      static java.lang.String X_FORWARDED_FOR
      Identifies the originating IP addresses of a client connecting to a web server through an HTTP proxy or a load balancer.
      static java.lang.String X_FORWARDED_HOST
      Identifies the original host requested that a client used to connect to your proxy or load balancer.
      static java.lang.String X_FORWARDED_PROTO
      Identifies the protocol (HTTP or HTTPS) that a client used to connect to your proxy or load balancer.
      static java.lang.String X_FRAME_OPTIONS
      Indicates whether a browser should be allowed to render a page in a frame, iframe, embed or object.
      static java.lang.String X_PERMITTED_CROSS_DOMAIN_POLICIES
      Specifies if a cross-domain policy file (crossdomain.xml) is allowed.
      The file may define a policy to grant clients, such as Adobe's Flash Player (now obsolete), Adobe Acrobat, Microsoft Silverlight (now obsolete), or Apache Flex, permission to handle data across domains that would otherwise be restricted due to the Same-Origin Policy.
      static java.lang.String X_POWERED_BY
      May be set by hosting environments or other frameworks and contains information about them while not providing any usefulness to the application or its visitors.
      Unset this header to avoid exposing potential vulnerabilities.
      static java.lang.String X_ROBOTS_TAG
      The X-Robots-Tag HTTP header is used to indicate how a web page is to be indexed within public search engine results.
      The header is effectively equivalent to <meta name="robots" content="…">.
      static java.lang.String X_XSS_PROTECTION
      Enables cross-site scripting filtering.

    • Constructor Summary

      Constructors 
      Constructor Description
      Headers()  

    • Method Summary

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • WWW_AUTHENTICATE

        public static final java.lang.String WWW_AUTHENTICATE
        Defines the authentication method that should be used to access a resource.
        See Also:
        Constant Field Values

      • AUTHORIZATION

        public static final java.lang.String AUTHORIZATION
        Contains the credentials to authenticate a user-agent with a server.
        See Also:
        Constant Field Values

      • PROXY_AUTHENTICATE

        public static final java.lang.String PROXY_AUTHENTICATE
        Defines the authentication method that should be used to access a resource behind a proxy server.
        See Also:
        Constant Field Values

      • PROXY_AUTHORIZATION

        public static final java.lang.String PROXY_AUTHORIZATION
        Contains the credentials to authenticate a user agent with a proxy server.
        See Also:
        Constant Field Values

      • AGE

        public static final java.lang.String AGE
        The time, in seconds, that the object has been in a proxy cache.
        See Also:
        Constant Field Values

      • CACHE_CONTROL

        public static final java.lang.String CACHE_CONTROL
        Directives for caching mechanisms in both requests and responses.
        See Also:
        Constant Field Values

      • CLEAR_SITE_DATA

        public static final java.lang.String CLEAR_SITE_DATA
        Clears browsing data (e.g. cookies, storage, cache) associated with the requesting website.
        See Also:
        Constant Field Values

      • EXPIRES

        public static final java.lang.String EXPIRES
        The date/time after which the response is considered stale.
        See Also:
        Constant Field Values

      • LAST_MODIFIED

        public static final java.lang.String LAST_MODIFIED
        The last modification date of the resource, used to compare several versions of the same resource. It is less accurate than ETAG, but easier to calculate in some environments.
        Conditional requests using IF_MODIFIED_SINCE and IF_UNMODIFIED_SINCE use this value to change the behavior of the request.
        See Also:
        Constant Field Values

      • ETAG

        public static final java.lang.String ETAG
        A unique string identifying the version of the resource. Conditional requests using IF_MATCH and IF_NONE_MATCH use this value to change the behavior of the request.
        See Also:
        Constant Field Values

      • IF_MATCH

        public static final java.lang.String IF_MATCH
        Makes the request conditional, and applies the method only if the stored resource matches one of the given ETags.
        See Also:
        Constant Field Values

      • IF_NONE_MATCH

        public static final java.lang.String IF_NONE_MATCH
        Makes the request conditional, and applies the method only if the stored resource doesn't match any of the given ETags.
        This is used to update caches (for safe requests), or to prevent uploading a new resource when one already exists.
        See Also:
        Constant Field Values

      • IF_MODIFIED_SINCE

        public static final java.lang.String IF_MODIFIED_SINCE
        Makes the request conditional, and expects the resource to be transmitted only if it has been modified after the given date.
        This is used to transmit data only when the cache is out of date.
        See Also:
        Constant Field Values

      • IF_UNMODIFIED_SINCE

        public static final java.lang.String IF_UNMODIFIED_SINCE
        Makes the request conditional, and expects the resource to be transmitted only if it has not been modified after the given date.
        This ensures the coherence of a new fragment of a specific range with previous ones, or to implement an optimistic concurrency control system when modifying existing documents.
        See Also:
        Constant Field Values

      • VARY

        public static final java.lang.String VARY
        Determines how to match request headers to decide whether a cached response can be used rather than requesting a fresh one from the origin server.
        See Also:
        Constant Field Values

      • CONNECTION

        public static final java.lang.String CONNECTION
        Controls whether the network connection stays open after the current transaction finishes.
        See Also:
        Constant Field Values

      • KEEP_ALIVE

        public static final java.lang.String KEEP_ALIVE
        Controls how long a persistent connection should stay open.
        See Also:
        Constant Field Values

      • ACCEPT

        public static final java.lang.String ACCEPT
        Informs the server about the mime types of data that can be sent back.
        See Also:
        Constant Field Values

      • ACCEPT_LANGUAGE

        public static final java.lang.String ACCEPT_LANGUAGE
        Informs the server about the human language the server is expected to send back. This is a hint and is not necessarily under the full control of the user: the server should always pay attention not to override an explicit user choice (like selecting a language from a dropdown).
        See Also:
        Constant Field Values

      • EXPECT

        public static final java.lang.String EXPECT
        Indicates expectations that need to be fulfilled by the server to properly handle the request.
        See Also:
        Constant Field Values

      • SET_COOKIE

        public static final java.lang.String SET_COOKIE
        Send cookies from the server to the user-agent.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_ALLOW_CREDENTIALS

        public static final java.lang.String ACCESS_CONTROL_ALLOW_CREDENTIALS
        Indicates whether the response to the request can be exposed when the credentials flag is true.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_ALLOW_HEADERS

        public static final java.lang.String ACCESS_CONTROL_ALLOW_HEADERS
        Used in response to a preflight request to indicate which HTTP headers can be used when making the actual request.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_ALLOW_METHODS

        public static final java.lang.String ACCESS_CONTROL_ALLOW_METHODS
        Specifies the methods allowed when accessing the resource in response to a preflight request.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_ALLOW_ORIGIN

        public static final java.lang.String ACCESS_CONTROL_ALLOW_ORIGIN
        Indicates whether the response can be shared.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_EXPOSE_HEADERS

        public static final java.lang.String ACCESS_CONTROL_EXPOSE_HEADERS
        Indicates which headers can be exposed as part of the response by listing their names.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_MAX_AGE

        public static final java.lang.String ACCESS_CONTROL_MAX_AGE
        Indicates how long the results of a preflight request can be cached.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_REQUEST_HEADERS

        public static final java.lang.String ACCESS_CONTROL_REQUEST_HEADERS
        Used when issuing a preflight request to let the server know which HTTP headers will be used when the actual request is made.
        See Also:
        Constant Field Values

      • ACCESS_CONTROL_REQUEST_METHOD

        public static final java.lang.String ACCESS_CONTROL_REQUEST_METHOD
        Used when issuing a preflight request to let the server know which HTTP method will be used when the actual request is made.
        See Also:
        Constant Field Values

      • ORIGIN

        public static final java.lang.String ORIGIN
        Indicates where a fetch originates from.
        See Also:
        Constant Field Values

      • TIMING_ALLOW_ORIGIN

        public static final java.lang.String TIMING_ALLOW_ORIGIN
        Specifies origins that are allowed to see values of attributes retrieved via features of the Resource Timing API, which would otherwise be reported as zero due to cross-origin restrictions.
        See Also:
        Constant Field Values

      • CONTENT_DISPOSITION

        public static final java.lang.String CONTENT_DISPOSITION
        Indicates if the resource transmitted should be displayed inline (default behavior without the header), or if it should be handled like a download and the browser should present a "Save As" dialog.
        See Also:
        Constant Field Values

      • CONTENT_LENGTH

        public static final java.lang.String CONTENT_LENGTH
        The size of the resource, in decimal number of bytes.
        See Also:
        Constant Field Values

      • CONTENT_TYPE

        public static final java.lang.String CONTENT_TYPE
        Indicates the media type of the resource.
        See Also:
        Constant Field Values

      • CONTENT_ENCODING

        public static final java.lang.String CONTENT_ENCODING
        Used to specify the compression algorithm.
        See Also:
        Constant Field Values

      • CONTENT_LANGUAGE

        public static final java.lang.String CONTENT_LANGUAGE
        Describes the human language(s) intended for the audience, so that it allows a user to differentiate according to the users' own preferred language.
        See Also:
        Constant Field Values

      • CONTENT_LOCATION

        public static final java.lang.String CONTENT_LOCATION
        Indicates an alternate location for the returned data.
        See Also:
        Constant Field Values

      • FORWARDED

        public static final java.lang.String FORWARDED
        Contains information from the client-facing side of proxy servers that is altered or lost when a proxy is involved in the path of the request.
        See Also:
        Constant Field Values

      • VIA

        public static final java.lang.String VIA
        Added by proxies, both forward and reverse proxies, and can appear in the request headers and the response headers.
        See Also:
        Constant Field Values

      • LOCATION

        public static final java.lang.String LOCATION
        Indicates the URL to redirect a page to.
        See Also:
        Constant Field Values

      • REFRESH

        public static final java.lang.String REFRESH
        Directs the browser to reload the page or redirect to another. Takes the same value as the `meta` element with refresh.
        See Also:
        Constant Field Values

      • FROM

        public static final java.lang.String FROM
        Contains an Internet email address for a human user who controls the requesting user agent.
        See Also:
        Constant Field Values

      • HOST

        public static final java.lang.String HOST
        Specifies the domain name of the server (for virtual hosting), and (optionally) the TCP port number on which the server is listening.
        See Also:
        Constant Field Values

      • REFERER

        public static final java.lang.String REFERER
        The address of the previous web page from which a link to the currently requested page was followed.
        See Also:
        Constant Field Values

      • REFERRER_POLICY

        public static final java.lang.String REFERRER_POLICY
        Governs which referrer information sent in the REFERER header should be included with requests made.
        See Also:
        Constant Field Values

      • USER_AGENT

        public static final java.lang.String USER_AGENT
        Contains a characteristic string that allows the network protocol peers to identify the application type, operating system, software vendor or software version of the requesting software user agent.
        See Also:
        Constant Field Values

      • ALLOW

        public static final java.lang.String ALLOW
        Lists the set of HTTP request methods supported by a resource.
        See Also:
        Constant Field Values

      • SERVER

        public static final java.lang.String SERVER
        Contains information about the software used by the origin server to handle the request.
        See Also:
        Constant Field Values

      • ACCEPT_RANGES

        public static final java.lang.String ACCEPT_RANGES
        Indicates if the server supports range requests, and if so in which unit the range can be expressed.
        See Also:
        Constant Field Values

      • RANGE

        public static final java.lang.String RANGE
        Indicates the part of a document that the server should return.
        See Also:
        Constant Field Values

      • IF_RANGE

        public static final java.lang.String IF_RANGE
        Creates a conditional range request that is only fulfilled if the given etag or date matches the remote resource. Used to prevent downloading two ranges from incompatible version of the resource.
        See Also:
        Constant Field Values

      • CONTENT_RANGE

        public static final java.lang.String CONTENT_RANGE
        Indicates where in a full body message a partial message belongs.
        See Also:
        Constant Field Values

      • CROSS_ORIGIN_EMBEDDER_POLICY

        public static final java.lang.String CROSS_ORIGIN_EMBEDDER_POLICY
        Allows a server to declare an embedder policy for a given document.
        See Also:
        Constant Field Values

      • CROSS_ORIGIN_OPENER_POLICY

        public static final java.lang.String CROSS_ORIGIN_OPENER_POLICY
        Prevents other domains from opening/controlling a window.
        See Also:
        Constant Field Values

      • CROSS_ORIGIN_RESOURCE_POLICY

        public static final java.lang.String CROSS_ORIGIN_RESOURCE_POLICY
        Prevents other domains from reading the response of the resources to which this header is applied.
        See Also:
        CORP explainer article, Constant Field Values

      • CONTENT_SECURITY_POLICY

        public static final java.lang.String CONTENT_SECURITY_POLICY
        Controls resources the user agent is allowed to load for a given page.
        See Also:
        Constant Field Values

      • CONTENT_SECURITY_POLICY_REPORT_ONLY

        public static final java.lang.String CONTENT_SECURITY_POLICY_REPORT_ONLY
        Allows web developers to experiment with policies by monitoring, but not enforcing, their effects. These violation reports consist of JSON documents sent via an HTTP POST request to the specified URI.
        See Also:
        Constant Field Values

      • PERMISSIONS_POLICY

        public static final java.lang.String PERMISSIONS_POLICY
        Provides a mechanism to allow and deny the use of browser features in a website's own frame, and in iframes that it embeds.
        See Also:
        Constant Field Values

      • STRICT_TRANSPORT_SECURITY

        public static final java.lang.String STRICT_TRANSPORT_SECURITY
        Force communication using HTTPS instead of HTTP.
        See Also:
        Constant Field Values

      • UPGRADE_INSECURE_REQUESTS

        public static final java.lang.String UPGRADE_INSECURE_REQUESTS
        Sends a signal to the server expressing the client's preference for an encrypted and authenticated response, and that it can successfully handle the upgrade-insecure-requests directive.
        See Also:
        Constant Field Values

      • X_CONTENT_TYPE_OPTIONS

        public static final java.lang.String X_CONTENT_TYPE_OPTIONS
        Disables MIME sniffing and forces browser to use the type given in CONTENT_TYPE.
        See Also:
        Constant Field Values

      • X_FRAME_OPTIONS

        public static final java.lang.String X_FRAME_OPTIONS
        Indicates whether a browser should be allowed to render a page in a frame, iframe, embed or object.
        See Also:
        Constant Field Values

      • X_PERMITTED_CROSS_DOMAIN_POLICIES

        public static final java.lang.String X_PERMITTED_CROSS_DOMAIN_POLICIES
        Specifies if a cross-domain policy file (crossdomain.xml) is allowed.
        The file may define a policy to grant clients, such as Adobe's Flash Player (now obsolete), Adobe Acrobat, Microsoft Silverlight (now obsolete), or Apache Flex, permission to handle data across domains that would otherwise be restricted due to the Same-Origin Policy.
        See Also:
        Constant Field Values

      • X_POWERED_BY

        public static final java.lang.String X_POWERED_BY
        May be set by hosting environments or other frameworks and contains information about them while not providing any usefulness to the application or its visitors.
        Unset this header to avoid exposing potential vulnerabilities.
        See Also:
        Constant Field Values

      • X_XSS_PROTECTION

        public static final java.lang.String X_XSS_PROTECTION
        Enables cross-site scripting filtering.
        See Also:
        Constant Field Values

      • SEC_FETCH_SITE

        public static final java.lang.String SEC_FETCH_SITE
        Indicates the relationship between a request initiator's origin and its target's origin. It is a Structured Header whose value is a token with possible values cross-site, same-origin, same-site, and none.
        See Also:
        Constant Field Values

      • SEC_FETCH_MODE

        public static final java.lang.String SEC_FETCH_MODE
        Indicates the request's mode to a server. It is a Structured Header whose value is a token with possible values cors, navigate, no-cors, same-origin, and websocket.
        See Also:
        Constant Field Values

      • SEC_FETCH_USER

        public static final java.lang.String SEC_FETCH_USER
        Indicates whether or not a navigation request was triggered by user activation. It is a Structured Header whose value is a boolean so possible values are ?0 for false and ?1 for true.
        See Also:
        Constant Field Values

      • SEC_FETCH_DEST

        public static final java.lang.String SEC_FETCH_DEST
        Indicates the request's destination. It is a Structured Header whose value is a token with possible values audio, audioworklet, document, embed, empty, font, image, manifest, object, paintworklet, report, script, serviceworker, sharedworker, style, track, video, worker, and xslt.
        See Also:
        Constant Field Values

      • SEC_PURPOSE

        public static final java.lang.String SEC_PURPOSE
        Indicates the purpose of the request, when the purpose is something other than immediate use by the user-agent.
        The header currently has one possible value, prefetch, which indicates that the resource is being fetched preemptively for a possible future navigation.
        See Also:
        Constant Field Values

      • SERVICE_WORKER_NAVIGATION_PRELOAD

        public static final java.lang.String SERVICE_WORKER_NAVIGATION_PRELOAD
        A request header sent in preemptive request to fetch() a resource during service worker boot.
        The value, which is set with NavigationPreloadManager.setHeaderValue()", can be used to inform a server that a different resource should be returned than in a normal fetch() operation.
        See Also:
        Constant Field Values

      • REPORT_TO

        public static final java.lang.String REPORT_TO
        Used to specify a server endpoint for the browser to send warning and error reports to.
        See Also:
        Constant Field Values

      • TRANSFER_ENCODING

        public static final java.lang.String TRANSFER_ENCODING
        Specifies the form of encoding used to safely transfer the resource to the user.
        See Also:
        Constant Field Values

      • TE

        public static final java.lang.String TE
        Specifies the transfer encodings the user agent is willing to accept.
        See Also:
        Constant Field Values

      • TRAILER

        public static final java.lang.String TRAILER
        Allows the sender to include additional fields at the end of chunked message.
        See Also:
        Constant Field Values

      • ALT_SVC

        public static final java.lang.String ALT_SVC
        Used to list alternate ways to reach this service.
        See Also:
        Constant Field Values

      • ALT_USED

        public static final java.lang.String ALT_USED
        Used to identify the alternative service in use.
        See Also:
        Constant Field Values

      • DATE

        public static final java.lang.String DATE
        Contains the date and time at which the message was originated.
        See Also:
        Constant Field Values

      • LINK

        public static final java.lang.String LINK
        This entity-header field provides a means for serializing one or more links in HTTP headers. It is semantically equivalent to the HTML link element.
        See Also:
        Constant Field Values

      • RETRY_AFTER

        public static final java.lang.String RETRY_AFTER
        Indicates how long the user agent should wait before making a follow-up request.
        See Also:
        Constant Field Values

      • SERVER_TIMING

        public static final java.lang.String SERVER_TIMING
        Communicates one or more metrics and descriptions for the given request-response cycle.
        See Also:
        Constant Field Values

      • UPGRADE

        public static final java.lang.String UPGRADE
        This HTTP/1.1 (only) header can be used to upgrade an already established client/server connection to a different protocol (over the same transport protocol).
        For example, it can be used by a client to upgrade a connection from HTTP 1.1 to HTTP 2.0, or an HTTP or HTTPS connection into a WebSocket.
        See Also:
        Constant Field Values

      • ACCEPT_CH

        public static final java.lang.String ACCEPT_CH
        Servers can advertise support for Client Hints using the Accept-CH header field or an equivalent HTML <meta> element with http-equiv attribute.
        See Also:
        Constant Field Values

      • SEC_CH_UA

        public static final java.lang.String SEC_CH_UA
        User agent's branding and version.
        See Also:
        Constant Field Values

      • SEC_CH_UA_ARCH

        public static final java.lang.String SEC_CH_UA_ARCH
        User agent's underlying platform architecture.
        See Also:
        Constant Field Values

      • SEC_CH_UA_BITNESS

        public static final java.lang.String SEC_CH_UA_BITNESS
        User agent's underlying CPU architecture bitness (for example "64" bit).
        See Also:
        Constant Field Values

      • SEC_CH_UA_FULL_VERSION_LIST

        public static final java.lang.String SEC_CH_UA_FULL_VERSION_LIST
        Full version for each brand in the user agent's brand list.
        See Also:
        Constant Field Values

      • SEC_CH_UA_MOBILE

        public static final java.lang.String SEC_CH_UA_MOBILE
        User agent is running on a mobile device or, more generally, prefers a "mobile" user experience.
        See Also:
        Constant Field Values

      • SEC_CH_UA_MODEL

        public static final java.lang.String SEC_CH_UA_MODEL
        User agent's device model.
        See Also:
        Constant Field Values

      • SEC_CH_UA_PLATFORM

        public static final java.lang.String SEC_CH_UA_PLATFORM
        User agent's underlying operation system/platform.
        See Also:
        Constant Field Values

      • SEC_CH_UA_PLATFORM_VERSION

        public static final java.lang.String SEC_CH_UA_PLATFORM_VERSION
        User agent's underlying operation system version.
        See Also:
        Constant Field Values

      • SEC_CH_UA_PREFERS_COLOR_SCHEME

        public static final java.lang.String SEC_CH_UA_PREFERS_COLOR_SCHEME
        User's preference of dark or light color scheme.
        See Also:
        Constant Field Values

      • SEC_CH_UA_PREFERS_REDUCED_MOTION

        public static final java.lang.String SEC_CH_UA_PREFERS_REDUCED_MOTION
        User's preference to see fewer animations and content layout shifts.
        See Also:
        Constant Field Values

      • ECT

        public static final java.lang.String ECT
        The effective connection type ("network profile") that best matches the connection's latency and bandwidth.
        This is part of the Network Information API.
        See Also:
        Constant Field Values

      • RTT

        public static final java.lang.String RTT
        Application layer round trip time (RTT) in milliseconds, which includes the server processing time.
        This is part of the Network Information API.
        See Also:
        Constant Field Values

      • SAVE_DATA

        public static final java.lang.String SAVE_DATA
        A string on that indicates the user agent's preference for reduced data usage.
        See Also:
        Constant Field Values

      • SEC_GPC

        public static final java.lang.String SEC_GPC
        Indicates whether the user consents to a website or service selling or sharing their personal information with third parties.
        See Also:
        Constant Field Values

      • ORIGIN_ISOLATION

        public static final java.lang.String ORIGIN_ISOLATION
        Provides a mechanism to allow web applications to isolate their origins.
        See Also:
        Constant Field Values

      • NEL

        public static final java.lang.String NEL
        Defines a mechanism that enables developers to declare a network error reporting policy.
        See Also:
        Constant Field Values

      • ACCEPT_PUSH_POLICY

        public static final java.lang.String ACCEPT_PUSH_POLICY
        A client can express the desired push policy for a request by sending an Accept-Push-Policy header field in the request.
        See Also:
        Constant Field Values

      • ACCEPT_SIGNATURE

        public static final java.lang.String ACCEPT_SIGNATURE
        A client can send the Accept-Signature header field to indicate intention to take advantage of any available signatures and to indicate what kinds of signatures it supports.
        See Also:
        Constant Field Values

      • EARLY_DATA

        public static final java.lang.String EARLY_DATA
        Indicates that the request has been conveyed in TLS early data.
        See Also:
        Constant Field Values

      • PUSH_POLICY

        public static final java.lang.String PUSH_POLICY
        A Push-Policy defines the server behavior regarding push when processing a request.
        See Also:
        Constant Field Values

      • SIGNATURE

        public static final java.lang.String SIGNATURE
        The Signature header field conveys a list of signatures for an exchange, each one accompanied by information about how to determine the authority of and refresh that signature.
        See Also:
        Constant Field Values

      • SIGNED_HEADERS

        public static final java.lang.String SIGNED_HEADERS
        The Signed-Headers header field identifies an ordered list of response header fields to include in a signature.
        See Also:
        Constant Field Values

      • SUPPORTS_LOADING_MODE

        public static final java.lang.String SUPPORTS_LOADING_MODE
        Set by a navigation target to opt-in to using various higher-risk loading modes.
        For example, cross-origin, same-site prerendering requires a Supports-Loading-Mode value of credentialed-prerender.
        See Also:
        Constant Field Values

      • X_FORWARDED_FOR

        public static final java.lang.String X_FORWARDED_FOR
        Identifies the originating IP addresses of a client connecting to a web server through an HTTP proxy or a load balancer.
        See Also:
        Constant Field Values

      • X_FORWARDED_HOST

        public static final java.lang.String X_FORWARDED_HOST
        Identifies the original host requested that a client used to connect to your proxy or load balancer.
        See Also:
        Constant Field Values

      • X_FORWARDED_PROTO

        public static final java.lang.String X_FORWARDED_PROTO
        Identifies the protocol (HTTP or HTTPS) that a client used to connect to your proxy or load balancer.
        See Also:
        Constant Field Values

      • X_DNS_PREFETCH_CONTROL

        public static final java.lang.String X_DNS_PREFETCH_CONTROL
        Controls DNS prefetching, a feature by which browsers proactively perform domain name resolution on both links that the user may choose to follow as well as URLs for items referenced by the document, including images, CSS, JavaScript, and so forth.
        See Also:
        Constant Field Values

      • X_ROBOTS_TAG

        public static final java.lang.String X_ROBOTS_TAG
        The X-Robots-Tag HTTP header is used to indicate how a web page is to be indexed within public search engine results.
        The header is effectively equivalent to <meta name="robots" content="…">.
        See Also:
        Constant Field Values

      • PRAGMA

        public static final java.lang.String PRAGMA
        Implementation-specific header that may have various effects anywhere along the request-response chain.
        Used for backwards compatibility with HTTP/1.0 caches where the Cache-Control header is not yet present.
        See Also:
        Constant Field Values

      • WARNING

        public static final java.lang.String WARNING
        General warning information about possible problems.
        See Also:
        Constant Field Values

    • Constructor Detail

      • Headers

        public Headers()