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Java example source code file (HttpHeaders.java)

This example Java source code file (HttpHeaders.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

accept, age, allow, authorization, beta, connection, dnt, etag, expires, httpheaders, link, string, vary, via

The HttpHeaders.java Java example source code

/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.net;

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;

/**
 * Contains constant definitions for the HTTP header field names. See:
 * <ul>
 * <li>RFC 2109
 * <li>RFC 2183
 * <li>RFC 2616
 * <li>RFC 2965
 * <li>RFC 5988
 * </ul>
 *
 *
 * @author Kurt Alfred Kluever
 * @since 11.0
 */
@GwtCompatible
public final class HttpHeaders {
  private HttpHeaders() {}

  // HTTP Request and Response header fields

  /** The HTTP {@code Cache-Control} header field name. */
  public static final String CACHE_CONTROL = "Cache-Control";
  /** The HTTP {@code Content-Length} header field name. */
  public static final String CONTENT_LENGTH = "Content-Length";
  /** The HTTP {@code Content-Type} header field name. */
  public static final String CONTENT_TYPE = "Content-Type";
  /** The HTTP {@code Date} header field name. */
  public static final String DATE = "Date";
  /** The HTTP {@code Pragma} header field name. */
  public static final String PRAGMA = "Pragma";
  /** The HTTP {@code Via} header field name. */
  public static final String VIA = "Via";
  /** The HTTP {@code Warning} header field name. */
  public static final String WARNING = "Warning";

  // HTTP Request header fields

  /** The HTTP {@code Accept} header field name. */
  public static final String ACCEPT = "Accept";
  /** The HTTP {@code Accept-Charset} header field name. */
  public static final String ACCEPT_CHARSET = "Accept-Charset";
  /** The HTTP {@code Accept-Encoding} header field name. */
  public static final String ACCEPT_ENCODING = "Accept-Encoding";
  /** The HTTP {@code Accept-Language} header field name. */
  public static final String ACCEPT_LANGUAGE = "Accept-Language";
  /** The HTTP {@code Access-Control-Request-Headers} header field name. */
  public static final String ACCESS_CONTROL_REQUEST_HEADERS = "Access-Control-Request-Headers";
  /** The HTTP {@code Access-Control-Request-Method} header field name. */
  public static final String ACCESS_CONTROL_REQUEST_METHOD = "Access-Control-Request-Method";
  /** The HTTP {@code Authorization} header field name. */
  public static final String AUTHORIZATION = "Authorization";
  /** The HTTP {@code Connection} header field name. */
  public static final String CONNECTION = "Connection";
  /** The HTTP {@code Cookie} header field name. */
  public static final String COOKIE = "Cookie";
  /** The HTTP {@code Expect} header field name. */
  public static final String EXPECT = "Expect";
  /** The HTTP {@code From} header field name. */
  public static final String FROM = "From";

  /**
   * The HTTP {@code Follow-Only-When-Prerender-Shown}</a> header field name.
   *
   * @since 17.0
   */
  @Beta
  public static final String FOLLOW_ONLY_WHEN_PRERENDER_SHOWN = "Follow-Only-When-Prerender-Shown";
  /** The HTTP {@code Host} header field name. */
  public static final String HOST = "Host";
  /** The HTTP {@code If-Match} header field name. */
  public static final String IF_MATCH = "If-Match";
  /** The HTTP {@code If-Modified-Since} header field name. */
  public static final String IF_MODIFIED_SINCE = "If-Modified-Since";
  /** The HTTP {@code If-None-Match} header field name. */
  public static final String IF_NONE_MATCH = "If-None-Match";
  /** The HTTP {@code If-Range} header field name. */
  public static final String IF_RANGE = "If-Range";
  /** The HTTP {@code If-Unmodified-Since} header field name. */
  public static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since";
  /** The HTTP {@code Last-Event-ID} header field name. */
  public static final String LAST_EVENT_ID = "Last-Event-ID";
  /** The HTTP {@code Max-Forwards} header field name. */
  public static final String MAX_FORWARDS = "Max-Forwards";
  /** The HTTP {@code Origin} header field name. */
  public static final String ORIGIN = "Origin";
  /** The HTTP {@code Proxy-Authorization} header field name. */
  public static final String PROXY_AUTHORIZATION = "Proxy-Authorization";
  /** The HTTP {@code Range} header field name. */
  public static final String RANGE = "Range";
  /** The HTTP {@code Referer} header field name. */
  public static final String REFERER = "Referer";
  /**
   * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">
   * {@code Service-Worker}</a> header field name.
   */
  public static final String SERVICE_WORKER = "Service-Worker";
  /** The HTTP {@code TE} header field name. */
  public static final String TE = "TE";
  /** The HTTP {@code Upgrade} header field name. */
  public static final String UPGRADE = "Upgrade";
  /** The HTTP {@code User-Agent} header field name. */
  public static final String USER_AGENT = "User-Agent";

  // HTTP Response header fields

  /** The HTTP {@code Accept-Ranges} header field name. */
  public static final String ACCEPT_RANGES = "Accept-Ranges";
  /** The HTTP {@code Access-Control-Allow-Headers} header field name. */
  public static final String ACCESS_CONTROL_ALLOW_HEADERS = "Access-Control-Allow-Headers";
  /** The HTTP {@code Access-Control-Allow-Methods} header field name. */
  public static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods";
  /** The HTTP {@code Access-Control-Allow-Origin} header field name. */
  public static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";
  /** The HTTP {@code Access-Control-Allow-Credentials} header field name. */
  public static final String ACCESS_CONTROL_ALLOW_CREDENTIALS = "Access-Control-Allow-Credentials";
  /** The HTTP {@code Access-Control-Expose-Headers} header field name. */
  public static final String ACCESS_CONTROL_EXPOSE_HEADERS = "Access-Control-Expose-Headers";
  /** The HTTP {@code Access-Control-Max-Age} header field name. */
  public static final String ACCESS_CONTROL_MAX_AGE = "Access-Control-Max-Age";
  /** The HTTP {@code Age} header field name. */
  public static final String AGE = "Age";
  /** The HTTP {@code Allow} header field name. */
  public static final String ALLOW = "Allow";
  /** The HTTP {@code Content-Disposition} header field name. */
  public static final String CONTENT_DISPOSITION = "Content-Disposition";
  /** The HTTP {@code Content-Encoding} header field name. */
  public static final String CONTENT_ENCODING = "Content-Encoding";
  /** The HTTP {@code Content-Language} header field name. */
  public static final String CONTENT_LANGUAGE = "Content-Language";
  /** The HTTP {@code Content-Location} header field name. */
  public static final String CONTENT_LOCATION = "Content-Location";
  /** The HTTP {@code Content-MD5} header field name. */
  public static final String CONTENT_MD5 = "Content-MD5";
  /** The HTTP {@code Content-Range} header field name. */
  public static final String CONTENT_RANGE = "Content-Range";
  /**
   * The HTTP <a href="http://w3.org/TR/CSP/#content-security-policy-header-field">
   * {@code Content-Security-Policy}</a> header field name.
   *
   * @since 15.0
   */
  public static final String CONTENT_SECURITY_POLICY = "Content-Security-Policy";
  /**
   * The HTTP <a href="http://w3.org/TR/CSP/#content-security-policy-report-only-header-field">
   * {@code Content-Security-Policy-Report-Only}</a> header field name.
   *
   * @since 15.0
   */
  public static final String CONTENT_SECURITY_POLICY_REPORT_ONLY =
      "Content-Security-Policy-Report-Only";
  /**
   * The HTTP nonstandard {@code X-Content-Security-Policy} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1 and used by the Firefox
   * until version 23 and the Internet Explorer version 10.
   * Please, use {@link #CONTENT_SECURITY_POLICY} to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_CONTENT_SECURITY_POLICY = "X-Content-Security-Policy";
  /**
   * The HTTP nonstandard {@code X-Content-Security-Policy-Report-Only} header field name.
   * It was introduced in <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1 and
   * used by the Firefox until version 23 and the Internet Explorer version 10.
   * Please, use {@link #CONTENT_SECURITY_POLICY_REPORT_ONLY} to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_CONTENT_SECURITY_POLICY_REPORT_ONLY =
      "X-Content-Security-Policy-Report-Only";
  /**
   * The HTTP nonstandard {@code X-WebKit-CSP} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1 and used by the Chrome until
   * version 25. Please, use {@link #CONTENT_SECURITY_POLICY} to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_WEBKIT_CSP = "X-WebKit-CSP";
  /**
   * The HTTP nonstandard {@code X-WebKit-CSP-Report-Only} header field name. It was introduced in
   * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1 and used by the Chrome until
   * version 25. Please, use {@link #CONTENT_SECURITY_POLICY_REPORT_ONLY} to pass the CSP.
   *
   * @since 20.0
   */
  public static final String X_WEBKIT_CSP_REPORT_ONLY = "X-WebKit-CSP-Report-Only";
  /** The HTTP {@code ETag} header field name. */
  public static final String ETAG = "ETag";
  /** The HTTP {@code Expires} header field name. */
  public static final String EXPIRES = "Expires";
  /** The HTTP {@code Last-Modified} header field name. */
  public static final String LAST_MODIFIED = "Last-Modified";
  /** The HTTP {@code Link} header field name. */
  public static final String LINK = "Link";
  /** The HTTP {@code Location} header field name. */
  public static final String LOCATION = "Location";
  /** The HTTP {@code P3P} header field name. Limited browser support. */
  public static final String P3P = "P3P";
  /** The HTTP {@code Proxy-Authenticate} header field name. */
  public static final String PROXY_AUTHENTICATE = "Proxy-Authenticate";
  /** The HTTP {@code Refresh} header field name. Non-standard header supported by most browsers. */
  public static final String REFRESH = "Refresh";
  /** The HTTP {@code Retry-After} header field name. */
  public static final String RETRY_AFTER = "Retry-After";
  /** The HTTP {@code Server} header field name. */
  public static final String SERVER = "Server";
  /**
   * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">
   * {@code Service-Worker-Allowed}</a> header field name.
   *
   * @since 20.0
   */
  public static final String SERVICE_WORKER_ALLOWED = "Service-Worker-Allowed";
  /** The HTTP {@code Set-Cookie} header field name. */
  public static final String SET_COOKIE = "Set-Cookie";
  /** The HTTP {@code Set-Cookie2} header field name. */
  public static final String SET_COOKIE2 = "Set-Cookie2";
  /**
   * The HTTP
   * <a href="http://tools.ietf.org/html/rfc6797#section-6.1">{@code Strict-Transport-Security}
   * header field name.
   *
   * @since 15.0
   */
  public static final String STRICT_TRANSPORT_SECURITY = "Strict-Transport-Security";
  /**
   * The HTTP <a href="http://www.w3.org/TR/resource-timing/#cross-origin-resources">
   * {@code Timing-Allow-Origin}</a> header field name.
   *
   * @since 15.0
   */
  public static final String TIMING_ALLOW_ORIGIN = "Timing-Allow-Origin";
  /** The HTTP {@code Trailer} header field name. */
  public static final String TRAILER = "Trailer";
  /** The HTTP {@code Transfer-Encoding} header field name. */
  public static final String TRANSFER_ENCODING = "Transfer-Encoding";
  /** The HTTP {@code Vary} header field name. */
  public static final String VARY = "Vary";
  /** The HTTP {@code WWW-Authenticate} header field name. */
  public static final String WWW_AUTHENTICATE = "WWW-Authenticate";

  // Common, non-standard HTTP header fields

  /** The HTTP {@code DNT} header field name. */
  public static final String DNT = "DNT";
  /** The HTTP {@code X-Content-Type-Options} header field name. */
  public static final String X_CONTENT_TYPE_OPTIONS = "X-Content-Type-Options";
  /** The HTTP {@code X-Do-Not-Track} header field name. */
  public static final String X_DO_NOT_TRACK = "X-Do-Not-Track";
  /** The HTTP {@code X-Forwarded-For} header field name. */
  public static final String X_FORWARDED_FOR = "X-Forwarded-For";
  /** The HTTP {@code X-Forwarded-Proto} header field name. */
  public static final String X_FORWARDED_PROTO = "X-Forwarded-Proto";
  /**
   * The HTTP <a href="http://goo.gl/lQirAH">{@code X-Forwarded-Host} header field name.
   *
   * @since 20.0
   */
  public static final String X_FORWARDED_HOST = "X-Forwarded-Host";
  /**
   * The HTTP <a href="http://goo.gl/YtV2at">{@code X-Forwarded-Port} header field name.
   *
   * @since 20.0
   */
  public static final String X_FORWARDED_PORT = "X-Forwarded-Port";
  /** The HTTP {@code X-Frame-Options} header field name. */
  public static final String X_FRAME_OPTIONS = "X-Frame-Options";
  /** The HTTP {@code X-Powered-By} header field name. */
  public static final String X_POWERED_BY = "X-Powered-By";
  /**
   * The HTTP
   * <a href="http://tools.ietf.org/html/draft-evans-palmer-key-pinning">{@code Public-Key-Pins}
   * header field name.
   *
   * @since 15.0
   */
  @Beta public static final String PUBLIC_KEY_PINS = "Public-Key-Pins";
  /**
   * The HTTP <a href="http://tools.ietf.org/html/draft-evans-palmer-key-pinning">
   * {@code Public-Key-Pins-Report-Only}</a> header field name.
   *
   * @since 15.0
   */
  @Beta public static final String PUBLIC_KEY_PINS_REPORT_ONLY = "Public-Key-Pins-Report-Only";
  /** The HTTP {@code X-Requested-With} header field name. */
  public static final String X_REQUESTED_WITH = "X-Requested-With";
  /** The HTTP {@code X-User-IP} header field name. */
  public static final String X_USER_IP = "X-User-IP";
  /** The HTTP {@code X-XSS-Protection} header field name. */
  public static final String X_XSS_PROTECTION = "X-XSS-Protection";
  /**
   * The HTTP <a href="http://html.spec.whatwg.org/multipage/semantics.html#hyperlink-auditing">
   * {@code Ping-From}</a> header field name.
   *
   * @since 19.0
   */
  public static final String PING_FROM = "Ping-From";
  /**
   * The HTTP <a href="http://html.spec.whatwg.org/multipage/semantics.html#hyperlink-auditing">
   * {@code Ping-To}</a> header field name.
   *
   * @since 19.0
   */
  public static final String PING_TO = "Ping-To";
}

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