## com.google.common.net
Class HttpHeaders

    java.lang.Object
      com.google.common.net.HttpHeaders

    @Beta
    @GwtCompatible
    public final class HttpHeaders

extends Object

Contains constant definitions for the HTTP header field names. See:

- RFC 2109
- RFC 2183
- RFC 2616
- RFC 2965
- RFC 5988

Since:
  11.0
Author:
  Kurt Alfred Kluever

Field Summary
`static String` `ACCEPT` The HTTP Accept header field name.
`static String` `ACCEPT_CHARSET` The HTTP Accept-Charset header field name.
`static String` `ACCEPT_ENCODING` The HTTP Accept-Encoding header field name.
`static String` `ACCEPT_LANGUAGE` The HTTP Accept-Language header field name.
`static String` `ACCEPT_RANGES` The HTTP Accept-Ranges header field name.
`static String` `ACCESS_CONTROL_ALLOW_CREDENTIALS` The HTTP Access-Control-Allow-Credentials header field name.
`static String` `ACCESS_CONTROL_ALLOW_HEADERS` The HTTP Access-Control-Allow-Headers header field name.
`static String` `ACCESS_CONTROL_ALLOW_METHODS` The HTTP Access-Control-Allow-Methods header field name.
`static String` `ACCESS_CONTROL_ALLOW_ORIGIN` The HTTP Access-Control-Allow-Origin header field name.
`static String` `ACCESS_CONTROL_EXPOSE_HEADERS` The HTTP Access-Control-Expose-Headers header field name.
`static String` `ACCESS_CONTROL_MAX_AGE` The HTTP Access-Control-Max-Age header field name.
`static String` `ACCESS_CONTROL_REQUEST_HEADERS` The HTTP Access-Control-Request-Headers header field name.
`static String` `ACCESS_CONTROL_REQUEST_METHOD` The HTTP Access-Control-Request-Method header field name.
`static String` `AGE` The HTTP Age header field name.
`static String` `ALLOW` The HTTP Allow header field name.
`static String` `AUTHORIZATION` The HTTP Authorization header field name.
`static String` `CACHE_CONTROL` The HTTP Cache-Control header field name.
`static String` `CONNECTION` The HTTP Connection header field name.
`static String` `CONTENT_DISPOSITION` The HTTP Content-Disposition header field name.
`static String` `CONTENT_ENCODING` The HTTP Content-Encoding header field name.
`static String` `CONTENT_LANGUAGE` The HTTP Content-Language header field name.
`static String` `CONTENT_LENGTH` The HTTP Content-Length header field name.
`static String` `CONTENT_LOCATION` The HTTP Content-Location header field name.
`static String` `CONTENT_MD5` The HTTP Content-MD5 header field name.
`static String` `CONTENT_RANGE` The HTTP Content-Range header field name.
`static String` `CONTENT_TYPE` The HTTP Content-Type header field name.
`static String` `COOKIE` The HTTP Cookie header field name.
`static String` `DATE` The HTTP Date header field name.
`static String` `DNT` The HTTP DNT header field name.
`static String` `ETAG` The HTTP ETag header field name.
`static String` `EXPECT` The HTTP Expect header field name.
`static String` `EXPIRES` The HTTP Expires header field name.
`static String` `FROM` The HTTP From header field name.
`static String` `HOST` The HTTP Host header field name.
`static String` `IF_MATCH` The HTTP If-Match header field name.
`static String` `IF_MODIFIED_SINCE` The HTTP If-Modified-Since header field name.
`static String` `IF_NONE_MATCH` The HTTP If-None-Match header field name.
`static String` `IF_RANGE` The HTTP If-Range header field name.
`static String` `IF_UNMODIFIED_SINCE` The HTTP If-Unmodified-Since header field name.
`static String` `LAST_EVENT_ID` The HTTP Last-Event-ID header field name.
`static String` `LAST_MODIFIED` The HTTP Last-Modified header field name.
`static String` `LINK` The HTTP Link header field name.
`static String` `LOCATION` The HTTP Location header field name.
`static String` `MAX_FORWARDS` The HTTP Max-Forwards header field name.
`static String` `ORIGIN` The HTTP Origin header field name.
`static String` `P3P` The HTTP P3P header field name.
`static String` `PRAGMA` The HTTP Pragma header field name.
`static String` `PROXY_AUTHENTICATE` The HTTP Proxy-Authenticate header field name.
`static String` `PROXY_AUTHORIZATION` The HTTP Proxy-Authorization header field name.
`static String` `RANGE` The HTTP Range header field name.
`static String` `REFERER` The HTTP Referer header field name.
`static String` `REFRESH` The HTTP Refresh header field name.
`static String` `RETRY_AFTER` The HTTP Retry-After header field name.
`static String` `SERVER` The HTTP Server header field name.
`static String` `SET_COOKIE` The HTTP Set-Cookie header field name.
`static String` `SET_COOKIE2` The HTTP Set-Cookie2 header field name.
`static String` `TE` The HTTP TE header field name.
`static String` `TRAILER` The HTTP Trailer header field name.
`static String` `TRANSFER_ENCODING` The HTTP Transfer-Encoding header field name.
`static String` `UPGRADE` The HTTP Upgrade header field name.
`static String` `USER_AGENT` The HTTP User-Agent header field name.
`static String` `VARY` The HTTP Vary header field name.
`static String` `VIA` The HTTP Via header field name.
`static String` `WARNING` The HTTP Warning header field name.
`static String` `WWW_AUTHENTICATE` The HTTP WWW-Authenticate header field name.
`static String` `X_CONTENT_TYPE_OPTIONS` The HTTP X-Content-Type-Options header field name.
`static String` `X_DO_NOT_TRACK` The HTTP X-Do-Not-Track header field name.
`static String` `X_FORWARDED_FOR` The HTTP X-Forwarded-For header field name.
`static String` `X_FORWARDED_PROTO` The HTTP X-Forwarded-Proto header field name.
`static String` `X_FRAME_OPTIONS` The HTTP X-Frame-Options header field name.
`static String` `X_POWERED_BY` The HTTP X-Powered-By header field name.
`static String` `X_REQUESTED_WITH` The HTTP X-Requested-With header field name.
`static String` `X_USER_IP` The HTTP X-User-IP header field name.
`static String` `X_XSS_PROTECTION` The HTTP X-XSS-Protection header field name.

Method Summary

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### CACHE_CONTROL

    public static final String CACHE_CONTROL

  The HTTP Cache-Control header field name.

  See Also:
    Constant Field Values

### CONTENT_LENGTH

    public static final String CONTENT_LENGTH

  The HTTP Content-Length header field name.

  See Also:
    Constant Field Values

### CONTENT_TYPE

    public static final String CONTENT_TYPE

  The HTTP Content-Type header field name.

  See Also:
    Constant Field Values

### DATE

    public static final String DATE

  The HTTP Date header field name.

  See Also:
    Constant Field Values

### PRAGMA

    public static final String PRAGMA

  The HTTP Pragma header field name.

  See Also:
    Constant Field Values

### VIA

    public static final String VIA

  The HTTP Via header field name.

  See Also:
    Constant Field Values

### WARNING

    public static final String WARNING

  The HTTP Warning header field name.

  See Also:
    Constant Field Values

### ACCEPT

    public static final String ACCEPT

  The HTTP Accept header field name.

  See Also:
    Constant Field Values

### ACCEPT_CHARSET

    public static final String ACCEPT_CHARSET

  The HTTP Accept-Charset header field name.

  See Also:
    Constant Field Values

### ACCEPT_ENCODING

    public static final String ACCEPT_ENCODING

  The HTTP Accept-Encoding header field name.

  See Also:
    Constant Field Values

### ACCEPT_LANGUAGE

    public static final String ACCEPT_LANGUAGE

  The HTTP Accept-Language header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_REQUEST_HEADERS

    public static final String ACCESS_CONTROL_REQUEST_HEADERS

  The HTTP Access-Control-Request-Headers header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_REQUEST_METHOD

    public static final String ACCESS_CONTROL_REQUEST_METHOD

  The HTTP Access-Control-Request-Method header field name.

  See Also:
    Constant Field Values

### AUTHORIZATION

    public static final String AUTHORIZATION

  The HTTP Authorization header field name.

  See Also:
    Constant Field Values

### CONNECTION

    public static final String CONNECTION

  The HTTP Connection header field name.

  See Also:
    Constant Field Values

### COOKIE

    public static final String COOKIE

  The HTTP Cookie header field name.

  See Also:
    Constant Field Values

### EXPECT

    public static final String EXPECT

  The HTTP Expect header field name.

  See Also:
    Constant Field Values

### FROM

    public static final String FROM

  The HTTP From header field name.

  See Also:
    Constant Field Values

### HOST

    public static final String HOST

  The HTTP Host header field name.

  See Also:
    Constant Field Values

### IF_MATCH

    public static final String IF_MATCH

  The HTTP If-Match header field name.

  See Also:
    Constant Field Values

### IF_MODIFIED_SINCE

    public static final String IF_MODIFIED_SINCE

  The HTTP If-Modified-Since header field name.

  See Also:
    Constant Field Values

### IF_NONE_MATCH

    public static final String IF_NONE_MATCH

  The HTTP If-None-Match header field name.

  See Also:
    Constant Field Values

### IF_RANGE

    public static final String IF_RANGE

  The HTTP If-Range header field name.

  See Also:
    Constant Field Values

### IF_UNMODIFIED_SINCE

    public static final String IF_UNMODIFIED_SINCE

  The HTTP If-Unmodified-Since header field name.

  See Also:
    Constant Field Values

### LAST_EVENT_ID

    public static final String LAST_EVENT_ID

  The HTTP Last-Event-ID header field name.

  See Also:
    Constant Field Values

### MAX_FORWARDS

    public static final String MAX_FORWARDS

  The HTTP Max-Forwards header field name.

  See Also:
    Constant Field Values

### ORIGIN

    public static final String ORIGIN

  The HTTP Origin header field name.

  See Also:
    Constant Field Values

### PROXY_AUTHORIZATION

    public static final String PROXY_AUTHORIZATION

  The HTTP Proxy-Authorization header field name.

  See Also:
    Constant Field Values

### RANGE

    public static final String RANGE

  The HTTP Range header field name.

  See Also:
    Constant Field Values

### REFERER

    public static final String REFERER

  The HTTP Referer header field name.

  See Also:
    Constant Field Values

### TE

    public static final String TE

  The HTTP TE header field name.

  See Also:
    Constant Field Values

### UPGRADE

    public static final String UPGRADE

  The HTTP Upgrade header field name.

  See Also:
    Constant Field Values

### USER_AGENT

    public static final String USER_AGENT

  The HTTP User-Agent header field name.

  See Also:
    Constant Field Values

### ACCEPT_RANGES

    public static final String ACCEPT_RANGES

  The HTTP Accept-Ranges header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_ALLOW_HEADERS

    public static final String ACCESS_CONTROL_ALLOW_HEADERS

  The HTTP Access-Control-Allow-Headers header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_ALLOW_METHODS

    public static final String ACCESS_CONTROL_ALLOW_METHODS

  The HTTP Access-Control-Allow-Methods header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_ALLOW_ORIGIN

    public static final String ACCESS_CONTROL_ALLOW_ORIGIN

  The HTTP Access-Control-Allow-Origin header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_ALLOW_CREDENTIALS

    public static final String ACCESS_CONTROL_ALLOW_CREDENTIALS

  The HTTP Access-Control-Allow-Credentials header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_EXPOSE_HEADERS

    public static final String ACCESS_CONTROL_EXPOSE_HEADERS

  The HTTP Access-Control-Expose-Headers header field name.

  See Also:
    Constant Field Values

### ACCESS_CONTROL_MAX_AGE

    public static final String ACCESS_CONTROL_MAX_AGE

  The HTTP Access-Control-Max-Age header field name.

  See Also:
    Constant Field Values

### AGE

    public static final String AGE

  The HTTP Age header field name.

  See Also:
    Constant Field Values

### ALLOW

    public static final String ALLOW

  The HTTP Allow header field name.

  See Also:
    Constant Field Values

### CONTENT_DISPOSITION

    public static final String CONTENT_DISPOSITION

  The HTTP Content-Disposition header field name.

  See Also:
    Constant Field Values

### CONTENT_ENCODING

    public static final String CONTENT_ENCODING

  The HTTP Content-Encoding header field name.

  See Also:
    Constant Field Values

### CONTENT_LANGUAGE

    public static final String CONTENT_LANGUAGE

  The HTTP Content-Language header field name.

  See Also:
    Constant Field Values

### CONTENT_LOCATION

    public static final String CONTENT_LOCATION

  The HTTP Content-Location header field name.

  See Also:
    Constant Field Values

### CONTENT_MD5

    public static final String CONTENT_MD5

  The HTTP Content-MD5 header field name.

  See Also:
    Constant Field Values

### CONTENT_RANGE

    public static final String CONTENT_RANGE

  The HTTP Content-Range header field name.

  See Also:
    Constant Field Values

### ETAG

    public static final String ETAG

  The HTTP ETag header field name.

  See Also:
    Constant Field Values

### EXPIRES

    public static final String EXPIRES

  The HTTP Expires header field name.

  See Also:
    Constant Field Values

### LAST_MODIFIED

    public static final String LAST_MODIFIED

  The HTTP Last-Modified header field name.

  See Also:
    Constant Field Values

### LINK

    public static final String LINK

  The HTTP Link header field name.

  See Also:
    Constant Field Values

### LOCATION

    public static final String LOCATION

  The HTTP Location header field name.

  See Also:
    Constant Field Values

### P3P

    public static final String P3P

  The HTTP P3P header field name. Limited browser support.

  See Also:
    Constant Field Values

### PROXY_AUTHENTICATE

    public static final String PROXY_AUTHENTICATE

  The HTTP Proxy-Authenticate header field name.

  See Also:
    Constant Field Values

### REFRESH

    public static final String REFRESH

  The HTTP Refresh header field name. Non-standard header supported by most browsers.

  See Also:
    Constant Field Values

### RETRY_AFTER

    public static final String RETRY_AFTER

  The HTTP Retry-After header field name.

  See Also:
    Constant Field Values

### SERVER

    public static final String SERVER

  The HTTP Server header field name.

  See Also:
    Constant Field Values

### SET_COOKIE

    public static final String SET_COOKIE

  The HTTP Set-Cookie header field name.

  See Also:
    Constant Field Values

### SET_COOKIE2

    public static final String SET_COOKIE2

  The HTTP Set-Cookie2 header field name.

  See Also:
    Constant Field Values

### TRAILER

    public static final String TRAILER

  The HTTP Trailer header field name.

  See Also:
    Constant Field Values

### TRANSFER_ENCODING

    public static final String TRANSFER_ENCODING

  The HTTP Transfer-Encoding header field name.

  See Also:
    Constant Field Values

### VARY

    public static final String VARY

  The HTTP Vary header field name.

  See Also:
    Constant Field Values

### WWW_AUTHENTICATE

    public static final String WWW_AUTHENTICATE

  The HTTP WWW-Authenticate header field name.

  See Also:
    Constant Field Values

### DNT

    public static final String DNT

  The HTTP DNT header field name.

  See Also:
    Constant Field Values

### X_CONTENT_TYPE_OPTIONS

    public static final String X_CONTENT_TYPE_OPTIONS

  The HTTP X-Content-Type-Options header field name.

  See Also:
    Constant Field Values

### X_DO_NOT_TRACK

    public static final String X_DO_NOT_TRACK

  The HTTP X-Do-Not-Track header field name.

  See Also:
    Constant Field Values

### X_FORWARDED_FOR

    public static final String X_FORWARDED_FOR

  The HTTP X-Forwarded-For header field name.

  See Also:
    Constant Field Values

### X_FORWARDED_PROTO

    public static final String X_FORWARDED_PROTO

  The HTTP X-Forwarded-Proto header field name.

  See Also:
    Constant Field Values

### X_FRAME_OPTIONS

    public static final String X_FRAME_OPTIONS

  The HTTP X-Frame-Options header field name.

  See Also:
    Constant Field Values

### X_POWERED_BY

    public static final String X_POWERED_BY

  The HTTP X-Powered-By header field name.

  See Also:
    Constant Field Values

### X_REQUESTED_WITH

    public static final String X_REQUESTED_WITH

  The HTTP X-Requested-With header field name.

  See Also:
    Constant Field Values

### X_USER_IP

    public static final String X_USER_IP

  The HTTP X-User-IP header field name.

  See Also:
    Constant Field Values

### X_XSS_PROTECTION

    public static final String X_XSS_PROTECTION

  The HTTP X-XSS-Protection header field name.

  See Also:
    Constant Field Values

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