001/* 002 * Copyright (C) 2011 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 */ 014 015package com.google.common.net; 016 017import com.google.common.annotations.Beta; 018import com.google.common.annotations.GwtCompatible; 019 020/** 021 * Contains constant definitions for the HTTP header field names. See: 022 * 023 * <ul> 024 * <li><a href="http://www.ietf.org/rfc/rfc2109.txt">RFC 2109</a> 025 * <li><a href="http://www.ietf.org/rfc/rfc2183.txt">RFC 2183</a> 026 * <li><a href="http://www.ietf.org/rfc/rfc2616.txt">RFC 2616</a> 027 * <li><a href="http://www.ietf.org/rfc/rfc2965.txt">RFC 2965</a> 028 * <li><a href="http://www.ietf.org/rfc/rfc5988.txt">RFC 5988</a> 029 * </ul> 030 * 031 * 032 * @author Kurt Alfred Kluever 033 * @since 11.0 034 */ 035@GwtCompatible 036public final class HttpHeaders { 037 private HttpHeaders() {} 038 039 // HTTP Request and Response header fields 040 041 /** The HTTP {@code Cache-Control} header field name. */ 042 public static final String CACHE_CONTROL = "Cache-Control"; 043 /** The HTTP {@code Content-Length} header field name. */ 044 public static final String CONTENT_LENGTH = "Content-Length"; 045 /** The HTTP {@code Content-Type} header field name. */ 046 public static final String CONTENT_TYPE = "Content-Type"; 047 /** The HTTP {@code Date} header field name. */ 048 public static final String DATE = "Date"; 049 /** The HTTP {@code Pragma} header field name. */ 050 public static final String PRAGMA = "Pragma"; 051 /** The HTTP {@code Via} header field name. */ 052 public static final String VIA = "Via"; 053 /** The HTTP {@code Warning} header field name. */ 054 public static final String WARNING = "Warning"; 055 056 // HTTP Request header fields 057 058 /** The HTTP {@code Accept} header field name. */ 059 public static final String ACCEPT = "Accept"; 060 /** The HTTP {@code Accept-Charset} header field name. */ 061 public static final String ACCEPT_CHARSET = "Accept-Charset"; 062 /** The HTTP {@code Accept-Encoding} header field name. */ 063 public static final String ACCEPT_ENCODING = "Accept-Encoding"; 064 /** The HTTP {@code Accept-Language} header field name. */ 065 public static final String ACCEPT_LANGUAGE = "Accept-Language"; 066 /** The HTTP {@code Access-Control-Request-Headers} header field name. */ 067 public static final String ACCESS_CONTROL_REQUEST_HEADERS = "Access-Control-Request-Headers"; 068 /** The HTTP {@code Access-Control-Request-Method} header field name. */ 069 public static final String ACCESS_CONTROL_REQUEST_METHOD = "Access-Control-Request-Method"; 070 /** The HTTP {@code Authorization} header field name. */ 071 public static final String AUTHORIZATION = "Authorization"; 072 /** The HTTP {@code Connection} header field name. */ 073 public static final String CONNECTION = "Connection"; 074 /** The HTTP {@code Cookie} header field name. */ 075 public static final String COOKIE = "Cookie"; 076 /** 077 * The HTTP <a href="https://fetch.spec.whatwg.org/#cross-origin-resource-policy-header">{@code 078 * Cross-Origin-Resource-Policy}</a> header field name. 079 * 080 * @since 28.0 081 */ 082 public static final String CROSS_ORIGIN_RESOURCE_POLICY = "Cross-Origin-Resource-Policy"; 083 /** 084 * The HTTP <a href="https://tools.ietf.org/html/rfc8470">{@code Early-Data}</a> header field 085 * name. 086 * 087 * @since 27.0 088 */ 089 public static final String EARLY_DATA = "Early-Data"; 090 /** The HTTP {@code Expect} header field name. */ 091 public static final String EXPECT = "Expect"; 092 /** The HTTP {@code From} header field name. */ 093 public static final String FROM = "From"; 094 /** 095 * The HTTP <a href="https://tools.ietf.org/html/rfc7239">{@code Forwarded}</a> header field name. 096 * 097 * @since 20.0 098 */ 099 public static final String FORWARDED = "Forwarded"; 100 /** 101 * The HTTP {@code Follow-Only-When-Prerender-Shown} header field name. 102 * 103 * @since 17.0 104 */ 105 @Beta 106 public static final String FOLLOW_ONLY_WHEN_PRERENDER_SHOWN = "Follow-Only-When-Prerender-Shown"; 107 /** The HTTP {@code Host} header field name. */ 108 public static final String HOST = "Host"; 109 /** 110 * The HTTP <a href="https://tools.ietf.org/html/rfc7540#section-3.2.1">{@code HTTP2-Settings} 111 * </a> header field name. 112 * 113 * @since 24.0 114 */ 115 public static final String HTTP2_SETTINGS = "HTTP2-Settings"; 116 /** The HTTP {@code If-Match} header field name. */ 117 public static final String IF_MATCH = "If-Match"; 118 /** The HTTP {@code If-Modified-Since} header field name. */ 119 public static final String IF_MODIFIED_SINCE = "If-Modified-Since"; 120 /** The HTTP {@code If-None-Match} header field name. */ 121 public static final String IF_NONE_MATCH = "If-None-Match"; 122 /** The HTTP {@code If-Range} header field name. */ 123 public static final String IF_RANGE = "If-Range"; 124 /** The HTTP {@code If-Unmodified-Since} header field name. */ 125 public static final String IF_UNMODIFIED_SINCE = "If-Unmodified-Since"; 126 /** The HTTP {@code Last-Event-ID} header field name. */ 127 public static final String LAST_EVENT_ID = "Last-Event-ID"; 128 /** The HTTP {@code Max-Forwards} header field name. */ 129 public static final String MAX_FORWARDS = "Max-Forwards"; 130 /** The HTTP {@code Origin} header field name. */ 131 public static final String ORIGIN = "Origin"; 132 /** The HTTP {@code Proxy-Authorization} header field name. */ 133 public static final String PROXY_AUTHORIZATION = "Proxy-Authorization"; 134 /** The HTTP {@code Range} header field name. */ 135 public static final String RANGE = "Range"; 136 /** The HTTP {@code Referer} header field name. */ 137 public static final String REFERER = "Referer"; 138 /** 139 * The HTTP <a href="https://www.w3.org/TR/referrer-policy/">{@code Referrer-Policy}</a> header 140 * field name. 141 * 142 * @since 23.4 143 */ 144 public static final String REFERRER_POLICY = "Referrer-Policy"; 145 146 /** 147 * Values for the <a href="https://www.w3.org/TR/referrer-policy/">{@code Referrer-Policy}</a> 148 * header. 149 * 150 * @since 23.4 151 */ 152 public static final class ReferrerPolicyValues { 153 private ReferrerPolicyValues() {} 154 155 public static final String NO_REFERRER = "no-referrer"; 156 public static final String NO_REFFERER_WHEN_DOWNGRADE = "no-referrer-when-downgrade"; 157 public static final String SAME_ORIGIN = "same-origin"; 158 public static final String ORIGIN = "origin"; 159 public static final String STRICT_ORIGIN = "strict-origin"; 160 public static final String ORIGIN_WHEN_CROSS_ORIGIN = "origin-when-cross-origin"; 161 public static final String STRICT_ORIGIN_WHEN_CROSS_ORIGIN = "strict-origin-when-cross-origin"; 162 public static final String UNSAFE_URL = "unsafe-url"; 163 } 164 165 /** 166 * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">{@code 167 * Service-Worker}</a> header field name. 168 */ 169 public static final String SERVICE_WORKER = "Service-Worker"; 170 /** The HTTP {@code TE} header field name. */ 171 public static final String TE = "TE"; 172 /** The HTTP {@code Upgrade} header field name. */ 173 public static final String UPGRADE = "Upgrade"; 174 /** The HTTP {@code User-Agent} header field name. */ 175 public static final String USER_AGENT = "User-Agent"; 176 177 // HTTP Response header fields 178 179 /** The HTTP {@code Accept-Ranges} header field name. */ 180 public static final String ACCEPT_RANGES = "Accept-Ranges"; 181 /** The HTTP {@code Access-Control-Allow-Headers} header field name. */ 182 public static final String ACCESS_CONTROL_ALLOW_HEADERS = "Access-Control-Allow-Headers"; 183 /** The HTTP {@code Access-Control-Allow-Methods} header field name. */ 184 public static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods"; 185 /** The HTTP {@code Access-Control-Allow-Origin} header field name. */ 186 public static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin"; 187 /** The HTTP {@code Access-Control-Allow-Credentials} header field name. */ 188 public static final String ACCESS_CONTROL_ALLOW_CREDENTIALS = "Access-Control-Allow-Credentials"; 189 /** The HTTP {@code Access-Control-Expose-Headers} header field name. */ 190 public static final String ACCESS_CONTROL_EXPOSE_HEADERS = "Access-Control-Expose-Headers"; 191 /** The HTTP {@code Access-Control-Max-Age} header field name. */ 192 public static final String ACCESS_CONTROL_MAX_AGE = "Access-Control-Max-Age"; 193 /** The HTTP {@code Age} header field name. */ 194 public static final String AGE = "Age"; 195 /** The HTTP {@code Allow} header field name. */ 196 public static final String ALLOW = "Allow"; 197 /** The HTTP {@code Content-Disposition} header field name. */ 198 public static final String CONTENT_DISPOSITION = "Content-Disposition"; 199 /** The HTTP {@code Content-Encoding} header field name. */ 200 public static final String CONTENT_ENCODING = "Content-Encoding"; 201 /** The HTTP {@code Content-Language} header field name. */ 202 public static final String CONTENT_LANGUAGE = "Content-Language"; 203 /** The HTTP {@code Content-Location} header field name. */ 204 public static final String CONTENT_LOCATION = "Content-Location"; 205 /** The HTTP {@code Content-MD5} header field name. */ 206 public static final String CONTENT_MD5 = "Content-MD5"; 207 /** The HTTP {@code Content-Range} header field name. */ 208 public static final String CONTENT_RANGE = "Content-Range"; 209 /** 210 * The HTTP <a href="http://w3.org/TR/CSP/#content-security-policy-header-field">{@code 211 * Content-Security-Policy}</a> header field name. 212 * 213 * @since 15.0 214 */ 215 public static final String CONTENT_SECURITY_POLICY = "Content-Security-Policy"; 216 /** 217 * The HTTP <a href="http://w3.org/TR/CSP/#content-security-policy-report-only-header-field"> 218 * {@code Content-Security-Policy-Report-Only}</a> header field name. 219 * 220 * @since 15.0 221 */ 222 public static final String CONTENT_SECURITY_POLICY_REPORT_ONLY = 223 "Content-Security-Policy-Report-Only"; 224 /** 225 * The HTTP nonstandard {@code X-Content-Security-Policy} header field name. It was introduced in 226 * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Firefox until 227 * version 23 and the Internet Explorer version 10. Please, use {@link #CONTENT_SECURITY_POLICY} 228 * to pass the CSP. 229 * 230 * @since 20.0 231 */ 232 public static final String X_CONTENT_SECURITY_POLICY = "X-Content-Security-Policy"; 233 /** 234 * The HTTP nonstandard {@code X-Content-Security-Policy-Report-Only} header field name. It was 235 * introduced in <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the 236 * Firefox until version 23 and the Internet Explorer version 10. Please, use {@link 237 * #CONTENT_SECURITY_POLICY_REPORT_ONLY} to pass the CSP. 238 * 239 * @since 20.0 240 */ 241 public static final String X_CONTENT_SECURITY_POLICY_REPORT_ONLY = 242 "X-Content-Security-Policy-Report-Only"; 243 /** 244 * The HTTP nonstandard {@code X-WebKit-CSP} header field name. It was introduced in <a 245 * href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Chrome until 246 * version 25. Please, use {@link #CONTENT_SECURITY_POLICY} to pass the CSP. 247 * 248 * @since 20.0 249 */ 250 public static final String X_WEBKIT_CSP = "X-WebKit-CSP"; 251 /** 252 * The HTTP nonstandard {@code X-WebKit-CSP-Report-Only} header field name. It was introduced in 253 * <a href="https://www.w3.org/TR/2011/WD-CSP-20111129/">CSP v.1</a> and used by the Chrome until 254 * version 25. Please, use {@link #CONTENT_SECURITY_POLICY_REPORT_ONLY} to pass the CSP. 255 * 256 * @since 20.0 257 */ 258 public static final String X_WEBKIT_CSP_REPORT_ONLY = "X-WebKit-CSP-Report-Only"; 259 /** The HTTP {@code ETag} header field name. */ 260 public static final String ETAG = "ETag"; 261 /** The HTTP {@code Expires} header field name. */ 262 public static final String EXPIRES = "Expires"; 263 /** The HTTP {@code Last-Modified} header field name. */ 264 public static final String LAST_MODIFIED = "Last-Modified"; 265 /** The HTTP {@code Link} header field name. */ 266 public static final String LINK = "Link"; 267 /** The HTTP {@code Location} header field name. */ 268 public static final String LOCATION = "Location"; 269 /** 270 * The HTTP <a href="https://googlechrome.github.io/OriginTrials/#header">{@code Origin-Trial}</a> 271 * header field name. 272 * 273 * @since 27.1 274 */ 275 public static final String ORIGIN_TRIAL = "Origin-Trial"; 276 /** The HTTP {@code P3P} header field name. Limited browser support. */ 277 public static final String P3P = "P3P"; 278 /** The HTTP {@code Proxy-Authenticate} header field name. */ 279 public static final String PROXY_AUTHENTICATE = "Proxy-Authenticate"; 280 /** The HTTP {@code Refresh} header field name. Non-standard header supported by most browsers. */ 281 public static final String REFRESH = "Refresh"; 282 /** 283 * The HTTP <a href="https://www.w3.org/TR/reporting/">{@code Report-To}</a> header field name. 284 * 285 * @since 27.1 286 */ 287 public static final String REPORT_TO = "Report-To"; 288 /** The HTTP {@code Retry-After} header field name. */ 289 public static final String RETRY_AFTER = "Retry-After"; 290 /** The HTTP {@code Server} header field name. */ 291 public static final String SERVER = "Server"; 292 /** 293 * The HTTP <a href="https://www.w3.org/TR/server-timing/">{@code Server-Timing}</a> header field 294 * name. 295 * 296 * @since 23.6 297 */ 298 public static final String SERVER_TIMING = "Server-Timing"; 299 /** 300 * The HTTP <a href="https://www.w3.org/TR/service-workers/#update-algorithm">{@code 301 * Service-Worker-Allowed}</a> header field name. 302 * 303 * @since 20.0 304 */ 305 public static final String SERVICE_WORKER_ALLOWED = "Service-Worker-Allowed"; 306 /** The HTTP {@code Set-Cookie} header field name. */ 307 public static final String SET_COOKIE = "Set-Cookie"; 308 /** The HTTP {@code Set-Cookie2} header field name. */ 309 public static final String SET_COOKIE2 = "Set-Cookie2"; 310 311 /** 312 * The HTTP <a href="http://goo.gl/Dxx19N">{@code SourceMap}</a> header field name. 313 * 314 * @since 27.1 315 */ 316 @Beta public static final String SOURCE_MAP = "SourceMap"; 317 318 /** 319 * The HTTP <a href="http://tools.ietf.org/html/rfc6797#section-6.1">{@code 320 * Strict-Transport-Security}</a> header field name. 321 * 322 * @since 15.0 323 */ 324 public static final String STRICT_TRANSPORT_SECURITY = "Strict-Transport-Security"; 325 /** 326 * The HTTP <a href="http://www.w3.org/TR/resource-timing/#cross-origin-resources">{@code 327 * Timing-Allow-Origin}</a> header field name. 328 * 329 * @since 15.0 330 */ 331 public static final String TIMING_ALLOW_ORIGIN = "Timing-Allow-Origin"; 332 /** The HTTP {@code Trailer} header field name. */ 333 public static final String TRAILER = "Trailer"; 334 /** The HTTP {@code Transfer-Encoding} header field name. */ 335 public static final String TRANSFER_ENCODING = "Transfer-Encoding"; 336 /** The HTTP {@code Vary} header field name. */ 337 public static final String VARY = "Vary"; 338 /** The HTTP {@code WWW-Authenticate} header field name. */ 339 public static final String WWW_AUTHENTICATE = "WWW-Authenticate"; 340 341 // Common, non-standard HTTP header fields 342 343 /** The HTTP {@code DNT} header field name. */ 344 public static final String DNT = "DNT"; 345 /** The HTTP {@code X-Content-Type-Options} header field name. */ 346 public static final String X_CONTENT_TYPE_OPTIONS = "X-Content-Type-Options"; 347 /** The HTTP {@code X-Do-Not-Track} header field name. */ 348 public static final String X_DO_NOT_TRACK = "X-Do-Not-Track"; 349 /** The HTTP {@code X-Forwarded-For} header field name (superseded by {@code Forwarded}). */ 350 public static final String X_FORWARDED_FOR = "X-Forwarded-For"; 351 /** The HTTP {@code X-Forwarded-Proto} header field name. */ 352 public static final String X_FORWARDED_PROTO = "X-Forwarded-Proto"; 353 /** 354 * The HTTP <a href="http://goo.gl/lQirAH">{@code X-Forwarded-Host}</a> header field name. 355 * 356 * @since 20.0 357 */ 358 public static final String X_FORWARDED_HOST = "X-Forwarded-Host"; 359 /** 360 * The HTTP <a href="http://goo.gl/YtV2at">{@code X-Forwarded-Port}</a> header field name. 361 * 362 * @since 20.0 363 */ 364 public static final String X_FORWARDED_PORT = "X-Forwarded-Port"; 365 /** The HTTP {@code X-Frame-Options} header field name. */ 366 public static final String X_FRAME_OPTIONS = "X-Frame-Options"; 367 /** The HTTP {@code X-Powered-By} header field name. */ 368 public static final String X_POWERED_BY = "X-Powered-By"; 369 /** 370 * The HTTP <a href="http://tools.ietf.org/html/draft-evans-palmer-key-pinning">{@code 371 * Public-Key-Pins}</a> header field name. 372 * 373 * @since 15.0 374 */ 375 @Beta public static final String PUBLIC_KEY_PINS = "Public-Key-Pins"; 376 /** 377 * The HTTP <a href="http://tools.ietf.org/html/draft-evans-palmer-key-pinning">{@code 378 * Public-Key-Pins-Report-Only}</a> header field name. 379 * 380 * @since 15.0 381 */ 382 @Beta public static final String PUBLIC_KEY_PINS_REPORT_ONLY = "Public-Key-Pins-Report-Only"; 383 /** The HTTP {@code X-Requested-With} header field name. */ 384 public static final String X_REQUESTED_WITH = "X-Requested-With"; 385 /** The HTTP {@code X-User-IP} header field name. */ 386 public static final String X_USER_IP = "X-User-IP"; 387 /** 388 * The HTTP <a href="https://goo.gl/VKpXxa">{@code X-Download-Options}</a> header field name. 389 * 390 * <p>When the new X-Download-Options header is present with the value {@code noopen}, the user is 391 * prevented from opening a file download directly; instead, they must first save the file 392 * locally. 393 * 394 * @since 24.1 395 */ 396 @Beta public static final String X_DOWNLOAD_OPTIONS = "X-Download-Options"; 397 /** The HTTP {@code X-XSS-Protection} header field name. */ 398 public static final String X_XSS_PROTECTION = "X-XSS-Protection"; 399 /** 400 * The HTTP <a 401 * href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control">{@code 402 * X-DNS-Prefetch-Control}</a> header controls DNS prefetch behavior. Value can be "on" or "off". 403 * By default, DNS prefetching is "on" for HTTP pages and "off" for HTTPS pages. 404 */ 405 public static final String X_DNS_PREFETCH_CONTROL = "X-DNS-Prefetch-Control"; 406 /** 407 * The HTTP <a href="http://html.spec.whatwg.org/multipage/semantics.html#hyperlink-auditing"> 408 * {@code Ping-From}</a> header field name. 409 * 410 * @since 19.0 411 */ 412 public static final String PING_FROM = "Ping-From"; 413 /** 414 * The HTTP <a href="http://html.spec.whatwg.org/multipage/semantics.html#hyperlink-auditing"> 415 * {@code Ping-To}</a> header field name. 416 * 417 * @since 19.0 418 */ 419 public static final String PING_TO = "Ping-To"; 420 421 /** 422 * The HTTP <a 423 * href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Link_prefetching_FAQ#As_a_server_admin.2C_can_I_distinguish_prefetch_requests_from_normal_requests.3F">{@code 424 * Purpose}</a> header field name. 425 * 426 * @since 28.0 427 */ 428 public static final String PURPOSE = "Purpose"; 429 /** 430 * The HTTP <a 431 * href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Link_prefetching_FAQ#As_a_server_admin.2C_can_I_distinguish_prefetch_requests_from_normal_requests.3F">{@code 432 * X-Purpose}</a> header field name. 433 * 434 * @since 28.0 435 */ 436 public static final String X_PURPOSE = "X-Purpose"; 437 /** 438 * The HTTP <a 439 * href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Link_prefetching_FAQ#As_a_server_admin.2C_can_I_distinguish_prefetch_requests_from_normal_requests.3F">{@code 440 * X-Moz}</a> header field name. 441 * 442 * @since 28.0 443 */ 444 public static final String X_MOZ = "X-Moz"; 445 446 /** 447 * The HTTP <a href="https://mikewest.github.io/sec-metadata/">{@code Sec-Fetch-Dest}</a> header 448 * field name. 449 * 450 * @since 27.1 451 */ 452 public static final String SEC_FETCH_DEST = "Sec-Fetch-Dest"; 453 /** 454 * The HTTP <a href="https://mikewest.github.io/sec-metadata/">{@code Sec-Fetch-Mode}</a> header 455 * field name. 456 * 457 * @since 27.1 458 */ 459 public static final String SEC_FETCH_MODE = "Sec-Fetch-Mode"; 460 /** 461 * The HTTP <a href="https://mikewest.github.io/sec-metadata/">{@code Sec-Fetch-Site}</a> header 462 * field name. 463 * 464 * @since 27.1 465 */ 466 public static final String SEC_FETCH_SITE = "Sec-Fetch-Site"; 467 /** 468 * The HTTP <a href="https://mikewest.github.io/sec-metadata/">{@code Sec-Fetch-User}</a> header 469 * field name. 470 * 471 * @since 27.1 472 */ 473 public static final String SEC_FETCH_USER = "Sec-Fetch-User"; 474 /** 475 * The HTTP <a href="https://mikewest.github.io/sec-metadata/">{@code Sec-Metadata}</a> header 476 * field name. 477 * 478 * @since 26.0 479 */ 480 public static final String SEC_METADATA = "Sec-Metadata"; 481 /** 482 * The HTTP <a href="https://tools.ietf.org/html/draft-ietf-tokbind-https">{@code 483 * Sec-Token-Binding}</a> header field name. 484 * 485 * @since 25.1 486 */ 487 public static final String SEC_TOKEN_BINDING = "Sec-Token-Binding"; 488 /** 489 * The HTTP <a href="https://tools.ietf.org/html/draft-ietf-tokbind-ttrp">{@code 490 * Sec-Provided-Token-Binding-ID}</a> header field name. 491 * 492 * @since 25.1 493 */ 494 public static final String SEC_PROVIDED_TOKEN_BINDING_ID = "Sec-Provided-Token-Binding-ID"; 495 /** 496 * The HTTP <a href="https://tools.ietf.org/html/draft-ietf-tokbind-ttrp">{@code 497 * Sec-Referred-Token-Binding-ID}</a> header field name. 498 * 499 * @since 25.1 500 */ 501 public static final String SEC_REFERRED_TOKEN_BINDING_ID = "Sec-Referred-Token-Binding-ID"; 502 /** 503 * The HTTP <a href="https://tools.ietf.org/html/rfc6455">{@code Sec-WebSocket-Accept}</a> header 504 * field name. 505 * 506 * @since 28.0 507 */ 508 public static final String SEC_WEBSOCKET_ACCEPT = "Sec-WebSocket-Accept"; 509 /** 510 * The HTTP <a href="https://tools.ietf.org/html/rfc6455">{@code Sec-WebSocket-Extensions}</a> 511 * header field name. 512 * 513 * @since 28.0 514 */ 515 public static final String SEC_WEBSOCKET_EXTENSIONS = "Sec-WebSocket-Extensions"; 516 /** 517 * The HTTP <a href="https://tools.ietf.org/html/rfc6455">{@code Sec-WebSocket-Key}</a> header 518 * field name. 519 * 520 * @since 28.0 521 */ 522 public static final String SEC_WEBSOCKET_KEY = "Sec-WebSocket-Key"; 523 /** 524 * The HTTP <a href="https://tools.ietf.org/html/rfc6455">{@code Sec-WebSocket-Protocol}</a> 525 * header field name. 526 * 527 * @since 28.0 528 */ 529 public static final String SEC_WEBSOCKET_PROTOCOL = "Sec-WebSocket-Protocol"; 530 /** 531 * The HTTP <a href="https://tools.ietf.org/html/rfc6455">{@code Sec-WebSocket-Version}</a> header 532 * field name. 533 * 534 * @since 28.0 535 */ 536 public static final String SEC_WEBSOCKET_VERSION = "Sec-WebSocket-Version"; 537 /** 538 * The HTTP <a href="https://tools.ietf.org/html/rfc8586">{@code CDN-Loop}</a> header field name. 539 * 540 * @since 28.0 541 */ 542 public static final String CDN_LOOP = "CDN-Loop"; 543}