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   5 <title>Hypertext Transfer Protocol -- HTTP/1.1</title></head><body>
   6 <pre>Network Working Group                                      R. Fielding
   7 Request for Comments: 2616                                   UC Irvine
   8 Obsoletes: 2068                                              J. Gettys
   9 Category: Standards Track                                   Compaq/W3C
  10                                                               J. Mogul
  11                                                                 Compaq
  12                                                             H. Frystyk
  13                                                                W3C/MIT
  14                                                            L. Masinter
  15                                                                  Xerox
  16                                                               P. Leach
  17                                                              Microsoft
  18                                                         T. Berners-Lee
  19                                                                W3C/MIT
  20                                                              June 1999
  21 </pre>
  22 <h1>
  23                 Hypertext Transfer Protocol -- HTTP/1.1
  24 </h1>
  25 <h2>
  26 Status of this Memo
  27 </h2>
  28 <p>
  29    This document specifies an Internet standards track protocol for the
  30    Internet community, and requests discussion and suggestions for
  31    improvements.  Please refer to the current edition of the "Internet
  32    Official Protocol Standards" (STD 1) for the standardization state
  33    and status of this protocol.  Distribution of this memo is unlimited.
  34 </p>
  35 <h2>
  36 Copyright Notice
  37 </h2>
  38 <p>
  39    Copyright (C) The Internet Society (1999).  All Rights Reserved.
  40 </p>
  41 <h2>
  42 Abstract
  43 </h2>
  44 <p>
  45    The Hypertext Transfer Protocol (HTTP) is an application-level
  46    protocol for distributed, collaborative, hypermedia information
  47    systems. It is a generic, stateless, protocol which can be used for
  48    many tasks beyond its use for hypertext, such as name servers and
  49    distributed object management systems, through extension of its
  50    request methods, error codes and headers <a rel="bibref"
  51 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec17.html#bib47">[47]</a>.
  52  A feature of HTTP is
  53    the typing and negotiation of data representation, allowing systems
  54    to be built independently of the data being transferred.
  55 </p>
  56 <p>
  57    HTTP has been in use by the World-Wide Web global information
  58    initiative since 1990. This specification defines the protocol
  59    referred to as "HTTP/1.1", and is an update to RFC 2068 <a
  60 rel="bibref"
  61 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec17.html#bib33">[33]</a>.
  62 </p>
  63 <div class="toc"><h2>Table of Contents</h2><ol>
  64
  65    <li><span><a rel="Section"
  66 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec1.html#sec1">Introduction
  67  </a> ... 1</span>
  68 <ol>
  69
  70       <li><span><a rel="Section"
  71 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec1.html#sec1.1">Purpose</a>
  72  ... 1.1</span></li>
  73       <li><span><a rel="Section"
  74 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec1.html#sec1.2">Requirements
  75  </a> ... 1.2</span></li>
  76       <li><span><a rel="Section"
  77 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec1.html#sec1.3">Terminology
  78  </a> ... 1.3</span></li>
  79       <li><span><a rel="Section"
  80 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec1.html#sec1.4">Overall
  81  Operation </a> ... 1.4</span></li>
  82 </ol>
  83 </li>
  84    <li><span><a rel="Section"
  85 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2">Notational
  86  Conventions and Generic Grammar </a> ... 2</span>
  87 <ol>
  88
  89       <li><span><a rel="Section"
  90 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.1">Augmented
  91  BNF </a> ... 2.1</span></li>
  92       <li><span><a rel="Section"
  93 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2">Basic
  94  Rules </a> ... 2.2</span></li>
  95 </ol>
  96 </li>
  97    <li><span><a rel="Section"
  98 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3">Protocol
  99  Parameters </a> ... 3</span>
 100 <ol>
 101
 102       <li><span><a rel="Section"
 103 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.1">HTTP
 104  Version </a> ... 3.1</span></li>
 105       <li><span><a rel="Section"
 106 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.2">Uniform
 107  Resource Identifiers </a> ... 3.2</span>
 108 <ol>
 109
 110          <li><span><a rel="Section"
 111 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.2.1">General
 112  Syntax </a> ... 3.2.1</span></li>
 113          <li><span><a rel="Section"
 114 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.2.2">http
 115  URL </a> ... 3.2.2</span></li>
 116          <li><span><a rel="Section"
 117 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.2.3">URI
 118  Comparison </a> ... 3.2.3</span></li>
 119 </ol>
 120 </li>
 121       <li><span><a rel="Section"
 122 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3">Date/Time
 123  Formats </a> ... 3.3</span>
 124 <ol>
 125
 126          <li><span><a rel="Section"
 127 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.1">Full
 128  Date </a> ... 3.3.1</span></li>
 129          <li><span><a rel="Section"
 130 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.2">Delta
 131  Seconds </a> ... 3.3.2</span></li>
 132 </ol>
 133 </li>
 134       <li><span><a rel="Section"
 135 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.4">Character
 136  Sets </a> ... 3.4</span>
 137 <ol>
 138
 139          <li><span><a rel="Section"
 140 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.4.1">Missing
 141  Charset </a> ... 3.4.1</span></li>
 142 </ol>
 143 </li>
 144       <li><span><a rel="Section"
 145 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.5">Content
 146  Codings </a> ... 3.5</span></li>
 147       <li><span><a rel="Section"
 148 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.6">Transfer
 149  Codings </a> ... 3.6</span>
 150 <ol>
 151
 152          <li><span><a rel="Section"
 153 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.6.1">Chunked
 154  Transfer Coding </a> ... 3.6.1</span></li>
 155 </ol>
 156 </li>
 157       <li><span><a rel="Section"
 158 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7">Media
 159  Types </a> ... 3.7</span>
 160 <ol>
 161
 162          <li><span><a rel="Section"
 163 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1">Canonicalization
 164  and Text Defaults </a> ... 3.7.1</span></li>
 165          <li><span><a rel="Section"
 166 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.2">Multipart
 167  Types </a> ... 3.7.2</span></li>
 168 </ol>
 169 </li>
 170       <li><span><a rel="Section"
 171 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.8">Product
 172  Tokens </a> ... 3.8</span></li>
 173       <li><span><a rel="Section"
 174 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.9">Quality
 175  Values </a> ... 3.9</span></li>
 176       <li><span><a rel="Section"
 177 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.10">Language
 178  Tags </a> ... 3.10</span></li>
 179       <li><span><a rel="Section"
 180 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.11">Entity
 181  Tags </a> ... 3.11</span></li>
 182       <li><span><a rel="Section"
 183 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.12">Range
 184  Units </a> ... 3.12</span></li>
 185 </ol>
 186 </li>
 187    <li><span><a rel="Section"
 188 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4">HTTP
 189 Message </a> ... 4</span>
 190 <ol>
 191
 192       <li><span><a rel="Section"
 193 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.1">Message
 194  Types </a> ... 4.1</span></li>
 195       <li><span><a rel="Section"
 196 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2">Message
 197  Headers </a> ... 4.2</span></li>
 198       <li><span><a rel="Section"
 199 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.3">Message
 200  Body </a> ... 4.3</span></li>
 201       <li><span><a rel="Section"
 202 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.4">Message
 203  Length </a> ... 4.4</span></li>
 204       <li><span><a rel="Section"
 205 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.5">General
 206  Header Fields </a> ... 4.5</span></li>
 207 </ol>
 208 </li>
 209    <li><span><a rel="Section"
 210 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5">Request
 211  </a> ... 5</span>
 212 <ol>
 213
 214       <li><span><a rel="Section"
 215 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1">Request-Line
 216  </a> ... 5.1</span>
 217 <ol>
 218
 219          <li><span><a rel="Section"
 220 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1.1">Method
 221  </a> ... 5.1.1</span></li>
 222          <li><span><a rel="Section"
 223 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1.2">Request-URI
 224  </a> ... 5.1.2</span></li>
 225 </ol>
 226 </li>
 227       <li><span><a rel="Section"
 228 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.2">The
 229 Resource Identified by a Request </a> ... 5.2</span></li>
 230       <li><span><a rel="Section"
 231 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.3">Request
 232  Header Fields </a> ... 5.3</span></li>
 233 </ol>
 234 </li>
 235    <li><span><a rel="Section"
 236 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6">Response
 237  </a> ... 6</span>
 238 <ol>
 239
 240       <li><span><a rel="Section"
 241 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1">Status-Line
 242  </a> ... 6.1</span>
 243 <ol>
 244
 245          <li><span><a rel="Section"
 246 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1.1">Status
 247  Code and Reason Phrase </a> ... 6.1.1</span></li>
 248 </ol>
 249 </li>
 250       <li><span><a rel="Section"
 251 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.2">Response
 252  Header Fields </a> ... 6.2</span></li>
 253 </ol>
 254 </li>
 255    <li><span><a rel="Section"
 256 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7">Entity
 257  </a> ... 7</span>
 258 <ol>
 259
 260       <li><span><a rel="Section"
 261 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7.1">Entity
 262  Header Fields </a> ... 7.1</span></li>
 263       <li><span><a rel="Section"
 264 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7.2">Entity
 265  Body </a> ... 7.2</span>
 266 <ol>
 267
 268          <li><span><a rel="Section"
 269 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7.2.1">Type
 270  </a> ... 7.2.1</span></li>
 271          <li><span><a rel="Section"
 272 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec7.html#sec7.2.2">Entity
 273  Length </a> ... 7.2.2</span></li>
 274 </ol>
 275 </li>
 276 </ol>
 277 </li>
 278    <li><span><a rel="Section"
 279 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8">Connections
 280  </a> ... 8</span>
 281 <ol>
 282
 283       <li><span><a rel="Section"
 284 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1">Persistent
 285  Connections </a> ... 8.1</span>
 286 <ol>
 287
 288          <li><span><a rel="Section"
 289 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1.1">Purpose
 290  </a> ... 8.1.1</span></li>
 291          <li><span><a rel="Section"
 292 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1.2">Overall
 293  Operation </a> ... 8.1.2</span></li>
 294          <li><span><a rel="Section"
 295 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1.3">Proxy
 296  Servers </a> ... 8.1.3</span></li>
 297          <li><span><a rel="Section"
 298 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1.4">Practical
 299  Considerations </a> ... 8.1.4</span></li>
 300 </ol>
 301 </li>
 302       <li><span><a rel="Section"
 303 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2">Message
 304  Transmission Requirements </a> ... 8.2</span>
 305 <ol>
 306
 307          <li><span><a rel="Section"
 308 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.1">Persistent
 309  Connections and Flow Control </a> ... 8.2.1</span></li>
 310          <li><span><a rel="Section"
 311 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.2">Monitoring
 312  Connections for Error Status Messages </a> ... 8.2.2</span></li>
 313          <li><span><a rel="Section"
 314 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.3">Use
 315  of the 100 (Continue) Status </a> ... 8.2.3</span></li>
 316          <li><span><a rel="Section"
 317 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.2.4">Client
 318  Behavior if Server Prematurely Closes Connection </a> ... 8.2.4</span></li>
 319 </ol>
 320 </li>
 321 </ol>
 322 </li>
 323    <li><span><a rel="Section"
 324 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9">Method
 325  Definitions </a> ... 9</span>
 326 <ol>
 327
 328       <li><span><a rel="Section"
 329 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1">Safe
 330  and Idempotent Methods </a> ... 9.1</span>
 331 <ol>
 332
 333          <li><span><a rel="Section"
 334 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.1">Safe
 335  Methods </a> ... 9.1.1</span></li>
 336          <li><span><a rel="Section"
 337 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.2">Idempotent
 338  Methods </a> ... 9.1.2</span></li>
 339 </ol>
 340 </li>
 341       <li><span><a rel="Section"
 342 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.2">OPTIONS
 343  </a> ... 9.2</span></li>
 344       <li><span><a rel="Section"
 345 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.3">GET </a>
 346  ... 9.3</span></li>
 347       <li><span><a rel="Section"
 348 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.4">HEAD
 349  </a> ... 9.4</span></li>
 350       <li><span><a rel="Section"
 351 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.5">POST
 352  </a> ... 9.5</span></li>
 353       <li><span><a rel="Section"
 354 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.6">PUT </a>
 355  ... 9.6</span></li>
 356       <li><span><a rel="Section"
 357 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.7">DELETE
 358  </a> ... 9.7</span></li>
 359       <li><span><a rel="Section"
 360 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.8">TRACE
 361  </a> ... 9.8</span></li>
 362       <li><span><a rel="Section"
 363 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.9">CONNECT
 364  </a> ... 9.9</span></li>
 365 </ol>
 366 </li>
 367    <li><span><a rel="Section"
 368 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10">Status
 369  Code Definitions </a> ... 10</span>
 370 <ol>
 371
 372       <li><span><a rel="Section"
 373 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.1">Informational
 374  1xx </a> ... 10.1</span>
 375 <ol>
 376
 377          <li><span><a rel="Section"
 378 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.1.1">100
 379  Continue </a> ... 10.1.1</span></li>
 380          <li><span><a rel="Section"
 381 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.1.2">101
 382  Switching Protocols </a> ... 10.1.2</span></li>
 383 </ol>
 384 </li>
 385       <li><span><a rel="Section"
 386 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2">Successful
 387  2xx </a> ... 10.2</span>
 388 <ol>
 389
 390          <li><span><a rel="Section"
 391 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.1">200
 392  OK </a> ... 10.2.1</span></li>
 393          <li><span><a rel="Section"
 394 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.2">201
 395  Created </a> ... 10.2.2</span></li>
 396          <li><span><a rel="Section"
 397 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.3">202
 398  Accepted </a> ... 10.2.3</span></li>
 399          <li><span><a rel="Section"
 400 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.4">203
 401  Non-Authoritative Information </a> ... 10.2.4</span></li>
 402          <li><span><a rel="Section"
 403 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.5">204
 404  No Content </a> ... 10.2.5</span></li>
 405          <li><span><a rel="Section"
 406 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.6">205
 407  Reset Content </a> ... 10.2.6</span></li>
 408          <li><span><a rel="Section"
 409 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.2.7">206
 410  Partial Content </a> ... 10.2.7</span></li>
 411 </ol>
 412 </li>
 413       <li><span><a rel="Section"
 414 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3">Redirection
 415  3xx </a> ... 10.3</span>
 416 <ol>
 417
 418          <li><span><a rel="Section"
 419 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.1">300
 420  Multiple Choices </a> ... 10.3.1</span></li>
 421          <li><span><a rel="Section"
 422 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.2">301
 423  Moved Permanently </a> ... 10.3.2</span></li>
 424          <li><span><a rel="Section"
 425 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.3">302
 426  Found </a> ... 10.3.3</span></li>
 427          <li><span><a rel="Section"
 428 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.4">303
 429  See Other </a> ... 10.3.4</span></li>
 430          <li><span><a rel="Section"
 431 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5">304
 432  Not Modified </a> ... 10.3.5</span></li>
 433          <li><span><a rel="Section"
 434 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.6">305
 435  Use Proxy </a> ... 10.3.6</span></li>
 436          <li><span><a rel="Section"
 437 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.7">306
 438  (Unused) </a> ... 10.3.7</span></li>
 439          <li><span><a rel="Section"
 440 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.8">307
 441  Temporary Redirect </a> ... 10.3.8</span></li>
 442 </ol>
 443 </li>
 444       <li><span><a rel="Section"
 445 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4">Client
 446  Error 4xx </a> ... 10.4</span>
 447 <ol>
 448
 449          <li><span><a rel="Section"
 450 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.1">400
 451  Bad Request </a> ... 10.4.1</span></li>
 452          <li><span><a rel="Section"
 453 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.2">401
 454  Unauthorized </a> ... 10.4.2</span></li>
 455          <li><span><a rel="Section"
 456 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.3">402
 457  Payment Required </a> ... 10.4.3</span></li>
 458          <li><span><a rel="Section"
 459 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.4">403
 460  Forbidden </a> ... 10.4.4</span></li>
 461          <li><span><a rel="Section"
 462 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.5">404
 463  Not Found </a> ... 10.4.5</span></li>
 464          <li><span><a rel="Section"
 465 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.6">405
 466  Method Not Allowed </a> ... 10.4.6</span></li>
 467          <li><span><a rel="Section"
 468 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.7">406
 469  Not Acceptable </a> ... 10.4.7</span></li>
 470          <li><span><a rel="Section"
 471 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.8">407
 472  Proxy Authentication Required </a> ... 10.4.8</span></li>
 473          <li><span><a rel="Section"
 474 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.9">408
 475  Request Timeout </a> ... 10.4.9</span></li>
 476          <li><span><a rel="Section"
 477 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.10">409
 478  Conflict </a> ... 10.4.10</span></li>
 479          <li><span><a rel="Section"
 480 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.11">410
 481  Gone </a> ... 10.4.11</span></li>
 482          <li><span><a rel="Section"
 483 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.12">411
 484  Length Required </a> ... 10.4.12</span></li>
 485          <li><span><a rel="Section"
 486 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.13">412
 487  Precondition Failed </a> ... 10.4.13</span></li>
 488          <li><span><a rel="Section"
 489 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.14">413
 490  Request Entity Too Large </a> ... 10.4.14</span></li>
 491          <li><span><a rel="Section"
 492 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.15">414
 493  Request-URI Too Long </a> ... 10.4.15</span></li>
 494          <li><span><a rel="Section"
 495 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.16">415
 496  Unsupported Media Type </a> ... 10.4.16</span></li>
 497          <li><span><a rel="Section"
 498 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.17">416
 499  Requested Range Not Satisfiable </a> ... 10.4.17</span></li>
 500          <li><span><a rel="Section"
 501 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.18">417
 502  Expectation Failed </a> ... 10.4.18</span></li>
 503 </ol>
 504 </li>
 505       <li><span><a rel="Section"
 506 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5">Server
 507  Error 5xx </a> ... 10.5</span>
 508 <ol>
 509
 510          <li><span><a rel="Section"
 511 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.1">500
 512  Internal Server Error </a> ... 10.5.1</span></li>
 513          <li><span><a rel="Section"
 514 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.2">501
 515  Not Implemented </a> ... 10.5.2</span></li>
 516          <li><span><a rel="Section"
 517 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.3">502
 518  Bad Gateway </a> ... 10.5.3</span></li>
 519          <li><span><a rel="Section"
 520 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.4">503
 521  Service Unavailable </a> ... 10.5.4</span></li>
 522          <li><span><a rel="Section"
 523 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.5">504
 524  Gateway Timeout </a> ... 10.5.5</span></li>
 525          <li><span><a rel="Section"
 526 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.6">505
 527  HTTP Version Not Supported </a> ... 10.5.6</span></li>
 528 </ol>
 529 </li>
 530 </ol>
 531 </li>
 532    <li><span><a rel="Section"
 533 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec11.html#sec11">Access
 534  Authentication </a> ... 11</span></li>
 535    <li><span><a rel="Section"
 536 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12">Content
 537  Negotiation </a> ... 12</span>
 538 <ol>
 539
 540       <li><span><a rel="Section"
 541 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12.1">Server-driven
 542  Negotiation </a> ... 12.1</span></li>
 543       <li><span><a rel="Section"
 544 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12.2">Agent-driven
 545  Negotiation </a> ... 12.2</span></li>
 546       <li><span><a rel="Section"
 547 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec12.html#sec12.3">Transparent
 548  Negotiation </a> ... 12.3</span></li>
 549 </ol>
 550 </li>
 551    <li><span><a rel="Section"
 552 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13">Caching
 553  in HTTP </a> ... 13</span>
 554 <ol>
 555 <li><span>@@ missing</span>
 556
 557 <ol>
 558
 559          <li><span><a rel="Section"
 560 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.1">Cache
 561  Correctness </a> ... 13.1.1</span></li>
 562          <li><span><a rel="Section"
 563 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.2">Warnings
 564  </a> ... 13.1.2</span></li>
 565          <li><span><a rel="Section"
 566 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.3">Cache-control
 567  Mechanisms </a> ... 13.1.3</span></li>
 568          <li><span><a rel="Section"
 569 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.4">Explicit
 570  User Agent Warnings </a> ... 13.1.4</span></li>
 571          <li><span><a rel="Section"
 572 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.5">Exceptions
 573  to the Rules and Warnings </a> ... 13.1.5</span></li>
 574          <li><span><a rel="Section"
 575 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.1.6">Client-controlled
 576  Behavior </a> ... 13.1.6</span></li>
 577 </ol>
 578 </li>
 579       <li><span><a rel="Section"
 580 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2">Expiration
 581  Model </a> ... 13.2</span>
 582 <ol>
 583
 584          <li><span><a rel="Section"
 585 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.1">Server-Specified
 586  Expiration </a> ... 13.2.1</span></li>
 587          <li><span><a rel="Section"
 588 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.2">Heuristic
 589  Expiration </a> ... 13.2.2</span></li>
 590          <li><span><a rel="Section"
 591 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.3">Age
 592  Calculations </a> ... 13.2.3</span></li>
 593          <li><span><a rel="Section"
 594 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.4">Expiration
 595  Calculations </a> ... 13.2.4</span></li>
 596          <li><span><a rel="Section"
 597 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.5">Disambiguating
 598  Expiration Values </a> ... 13.2.5</span></li>
 599          <li><span><a rel="Section"
 600 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.2.6">Disambiguating
 601  Multiple Responses </a> ... 13.2.6</span></li>
 602 </ol>
 603 </li>
 604       <li><span><a rel="Section"
 605 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3">Validation
 606  Model </a> ... 13.3</span>
 607 <ol>
 608
 609          <li><span><a rel="Section"
 610 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.1">Last-Modified
 611  Dates </a> ... 13.3.1</span></li>
 612          <li><span><a rel="Section"
 613 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.2">Entity
 614  Tag Cache Validators </a> ... 13.3.2</span></li>
 615          <li><span><a rel="Section"
 616 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.3">Weak
 617  and Strong Validators </a> ... 13.3.3</span></li>
 618          <li><span><a rel="Section"
 619 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.4">Rules
 620  for When to Use Entity Tags and Last-Modified Dates</a> ... 13.3.4</span></li>
 621          <li><span><a rel="Section"
 622 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.5">Non-validating
 623  Conditionals </a> ... 13.3.5</span></li>
 624 </ol>
 625 </li>
 626       <li><span><a rel="Section"
 627 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.4">Response
 628  Cacheability </a> ... 13.4</span></li>
 629       <li><span><a rel="Section"
 630 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5">Constructing
 631  Responses From Caches </a> ... 13.5</span>
 632 <ol>
 633
 634          <li><span><a rel="Section"
 635 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.1">End-to-end
 636  and Hop-by-hop Headers </a> ... 13.5.1</span></li>
 637          <li><span><a rel="Section"
 638 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.2">Non-modifiable
 639  Headers </a> ... 13.5.2</span></li>
 640          <li><span><a rel="Section"
 641 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.3">Combining
 642  Headers </a> ... 13.5.3</span></li>
 643          <li><span><a rel="Section"
 644 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.4">Combining
 645  Byte Ranges </a> ... 13.5.4</span></li>
 646 </ol>
 647 </li>
 648       <li><span><a rel="Section"
 649 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.6">Caching
 650  Negotiated Responses </a> ... 13.6</span></li>
 651       <li><span><a rel="Section"
 652 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.7">Shared
 653  and Non-Shared Caches </a> ... 13.7</span></li>
 654       <li><span><a rel="Section"
 655 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.8">Errors
 656  or Incomplete Response Cache Behavior </a> ... 13.8</span></li>
 657       <li><span><a rel="Section"
 658 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.9">Side
 659  Effects of GET and HEAD </a> ... 13.9</span></li>
 660       <li><span><a rel="Section"
 661 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.10">Invalidation
 662  After Updates or Deletions </a> ... 13.10</span></li>
 663       <li><span><a rel="Section"
 664 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.11">Write-Through
 665  Mandatory </a> ... 13.11</span></li>
 666       <li><span><a rel="Section"
 667 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.12">Cache
 668  Replacement </a> ... 13.12</span></li>
 669       <li><span><a rel="Section"
 670 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.13">History
 671  Lists </a> ... 13.13</span></li>
 672 </ol>
 673 </li>
 674    <li><span><a rel="Section"
 675 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14">Header
 676  Field Definitions </a> ... 14</span>
 677 <ol>
 678
 679       <li><span><a rel="Section"
 680 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1">Accept
 681  </a> ... 14.1</span></li>
 682       <li><span><a rel="Section"
 683 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.2">Accept-Charset
 684  </a> ... 14.2</span></li>
 685       <li><span><a rel="Section"
 686 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.3">Accept-Encoding
 687  </a> ... 14.3</span></li>
 688       <li><span><a rel="Section"
 689 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4">Accept-Language
 690  </a> ... 14.4</span></li>
 691       <li><span><a rel="Section"
 692 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.5">Accept-Ranges
 693  </a> ... 14.5</span></li>
 694       <li><span><a rel="Section"
 695 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.6">Age
 696  </a> ... 14.6</span></li>
 697       <li><span><a rel="Section"
 698 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.7">Allow
 699  </a> ... 14.7</span></li>
 700       <li><span><a rel="Section"
 701 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.8">Authorization
 702  </a> ... 14.8</span></li>
 703       <li><span><a rel="Section"
 704 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9">Cache-Control
 705  </a> ... 14.9</span>
 706 <ol>
 707
 708          <li><span><a rel="Section"
 709 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.1">What
 710  is Cacheable </a> ... 14.9.1</span></li>
 711          <li><span><a rel="Section"
 712 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.2">What
 713  May be Stored by Caches </a> ... 14.9.2</span></li>
 714          <li><span><a rel="Section"
 715 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.3">Modifications
 716  of the Basic Expiration Mechanism </a> ... 14.9.3</span></li>
 717          <li><span><a rel="Section"
 718 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.4">Cache
 719  Revalidation and Reload Controls </a> ... 14.9.4</span></li>
 720          <li><span><a rel="Section"
 721 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.5">No-Transform
 722  Directive </a> ... 14.9.5</span></li>
 723          <li><span><a rel="Section"
 724 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.6">Cache
 725  Control Extensions </a> ... 14.9.6</span></li>
 726 </ol>
 727 </li>
 728       <li><span><a rel="Section"
 729 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.10">Connection
 730  </a> ... 14.10</span></li>
 731       <li><span><a rel="Section"
 732 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11">Content-Encoding
 733  </a> ... 14.11</span></li>
 734       <li><span><a rel="Section"
 735 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.12">Content-Language
 736  </a> ... 14.12</span></li>
 737       <li><span><a rel="Section"
 738 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13">Content-Length
 739  </a> ... 14.13</span></li>
 740       <li><span><a rel="Section"
 741 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.14">Content-Location
 742  </a> ... 14.14</span></li>
 743       <li><span><a rel="Section"
 744 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.15">Content-MD5
 745  </a> ... 14.15</span></li>
 746       <li><span><a rel="Section"
 747 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.16">Content-Range
 748  </a> ... 14.16</span></li>
 749       <li><span><a rel="Section"
 750 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17">Content-Type
 751  </a> ... 14.17</span></li>
 752       <li><span><a rel="Section"
 753 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.18">Date
 754  </a> ... 14.18</span>
 755 <ol>
 756
 757          <li><span><a rel="Section"
 758 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.18.1">Clockless
 759  Origin Server Operation </a> ... 14.18.1</span></li>
 760 </ol>
 761 </li>
 762       <li><span><a rel="Section"
 763 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.19">ETag
 764  </a> ... 14.19</span></li>
 765       <li><span><a rel="Section"
 766 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.20">Expect
 767  </a> ... 14.20</span></li>
 768       <li><span><a rel="Section"
 769 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.21">Expires
 770  </a> ... 14.21</span></li>
 771       <li><span><a rel="Section"
 772 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.22">From
 773  </a> ... 14.22</span></li>
 774       <li><span><a rel="Section"
 775 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.23">Host
 776  </a> ... 14.23</span></li>
 777       <li><span><a rel="Section"
 778 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.24">If-Match
 779  </a> ... 14.24</span></li>
 780       <li><span><a rel="Section"
 781 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.25">If-Modified-Since
 782  </a> ... 14.25</span></li>
 783       <li><span><a rel="Section"
 784 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26">If-None-Match
 785  </a> ... 14.26</span></li>
 786       <li><span><a rel="Section"
 787 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.27">If-Range
 788  </a> ... 14.27</span></li>
 789       <li><span><a rel="Section"
 790 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.28">If-Unmodified-Since
 791  </a> ... 14.28</span></li>
 792       <li><span><a rel="Section"
 793 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.29">Last-Modified
 794  </a> ... 14.29</span></li>
 795       <li><span><a rel="Section"
 796 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.30">Location
 797  </a> ... 14.30</span></li>
 798       <li><span><a rel="Section"
 799 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.31">Max-Forwards
 800  </a> ... 14.31</span></li>
 801       <li><span><a rel="Section"
 802 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.32">Pragma
 803  </a> ... 14.32</span></li>
 804       <li><span><a rel="Section"
 805 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.33">Proxy-Authenticate
 806  </a> ... 14.33</span></li>
 807       <li><span><a rel="Section"
 808 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.34">Proxy-Authorization
 809  </a> ... 14.34</span></li>
 810       <li><span><a rel="Section"
 811 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35">Range
 812  </a> ... 14.35</span>
 813 <ol>
 814
 815          <li><span><a rel="Section"
 816 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1">Byte
 817  Ranges </a> ... 14.35.1</span></li>
 818          <li><span><a rel="Section"
 819 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.2">Range
 820  Retrieval Requests </a> ... 14.35.2</span></li>
 821 </ol>
 822 </li>
 823       <li><span><a rel="Section"
 824 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.36">Referer
 825  </a> ... 14.36</span></li>
 826       <li><span><a rel="Section"
 827 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.37">Retry-After
 828  </a> ... 14.37</span></li>
 829       <li><span><a rel="Section"
 830 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.38">Server
 831  </a> ... 14.38</span></li>
 832       <li><span><a rel="Section"
 833 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.39">TE
 834  </a> ... 14.39</span></li>
 835       <li><span><a rel="Section"
 836 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.40">Trailer
 837  </a> ... 14.40</span></li>
 838       <li><span><a rel="Section"
 839 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.41">Transfer-Encoding</a>
 840  ... 14.41</span></li>
 841       <li><span><a rel="Section"
 842 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.42">Upgrade
 843  </a> ... 14.42</span></li>
 844       <li><span><a rel="Section"
 845 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43">User-Agent
 846  </a> ... 14.43</span></li>
 847       <li><span><a rel="Section"
 848 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44">Vary
 849  </a> ... 14.44</span></li>
 850       <li><span><a rel="Section"
 851 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.45">Via
 852  </a> ... 14.45</span></li>
 853       <li><span><a rel="Section"
 854 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.46">Warning
 855  </a> ... 14.46</span></li>
 856       <li><span><a rel="Section"
 857 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.47">WWW-Authenticate
 858  </a> ... 14.47</span></li>
 859 </ol>
 860 </li>
 861    <li><span><a rel="Section"
 862 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15">Security
 863  Considerations </a> ... 15</span>
 864 <ol>
 865
 866       <li><span><a rel="Section"
 867 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.1">Personal
 868  Information</a> ... 15.1</span>
 869 <ol>
 870
 871          <li><span><a rel="Section"
 872 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.1.1">Abuse
 873  of Server Log Information </a> ... 15.1.1</span></li>
 874          <li><span><a rel="Section"
 875 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.1.2">Transfer
 876  of Sensitive Information </a> ... 15.1.2</span></li>
 877          <li><span><a rel="Section"
 878 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.1.3">Encoding
 879  Sensitive Information in URI's </a> ... 15.1.3</span></li>
 880          <li><span><a rel="Section"
 881 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.1.4">Privacy
 882  Issues Connected to Accept Headers </a> ... 15.1.4</span></li>
 883 </ol>
 884 </li>
 885       <li><span><a rel="Section"
 886 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.2">Attacks
 887  Based On File and Path Names </a> ... 15.2</span></li>
 888       <li><span><a rel="Section"
 889 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.3">DNS
 890  Spoofing </a> ... 15.3</span></li>
 891       <li><span><a rel="Section"
 892 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.4">Location
 893  Headers and Spoofing </a> ... 15.4</span></li>
 894       <li><span><a rel="Section"
 895 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.5">Content-Disposition
 896  Issues </a> ... 15.5</span></li>
 897       <li><span><a rel="Section"
 898 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.6">Authentication
 899  Credentials and Idle Clients </a> ... 15.6</span></li>
 900       <li><span><a rel="Section"
 901 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.7">Proxies
 902  and Caching </a> ... 15.7</span>
 903 <ol>
 904
 905          <li><span><a rel="Section"
 906 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec15.html#sec15.7.1">Denial
 907  of Service Attacks on Proxies</a> ... 15.7.1</span></li>
 908 </ol>
 909 </li>
 910 </ol>
 911 </li>
 912    <li><span><a rel="Section"
 913 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec16.html#sec16">Acknowledgments
 914  </a> ... 16</span></li>
 915    <li><span><a rel="Section"
 916 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec17.html#sec17">References
 917  </a> ... 17</span></li>
 918    <li><span><a rel="Section"
 919 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec18.html#sec18">Authors'
 920  Addresses </a> ... 18</span></li>
 921    <li><span><a rel="Section"
 922 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19">Appendices
 923  </a> ... 19</span>
 924 <ol>
 925
 926       <li><span><a rel="Section"
 927 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.1">Internet
 928  Media Type message/http and application/http </a> ... 19.1</span></li>
 929       <li><span><a rel="Section"
 930 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.2">Internet
 931  Media Type multipart/byteranges </a> ... 19.2</span></li>
 932       <li><span><a rel="Section"
 933 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.3">Tolerant
 934  Applications </a> ... 19.3</span></li>
 935       <li><span><a rel="Section"
 936 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4">Differences
 937  Between HTTP Entities and RFC 2045 Entities </a> ... 19.4</span>
 938 <ol>
 939
 940          <li><span><a rel="Section"
 941 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.1">MIME-Version
 942  </a> ... 19.4.1</span></li>
 943          <li><span><a rel="Section"
 944 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.2">Conversion
 945  to Canonical Form </a> ... 19.4.2</span></li>
 946          <li><span><a rel="Section"
 947 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.3">Conversion
 948  of Date Formats </a> ... 19.4.3</span></li>
 949          <li><span><a rel="Section"
 950 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.4">Introduction
 951  of Content-Encoding </a> ... 19.4.4</span></li>
 952          <li><span><a rel="Section"
 953 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.5">No
 954  Content-Transfer-Encoding </a> ... 19.4.5</span></li>
 955          <li><span><a rel="Section"
 956 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.6">Introduction
 957  of Transfer-Encoding </a> ... 19.4.6</span></li>
 958          <li><span><a rel="Section"
 959 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.4.7">MHTML
 960  and Line Length Limitations </a> ... 19.4.7</span></li>
 961 </ol>
 962 </li>
 963       <li><span><a rel="Section"
 964 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5">Additional
 965  Features </a> ... 19.5</span>
 966 <ol>
 967
 968          <li><span><a rel="Section"
 969 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1">Content-Disposition
 970  </a> ... 19.5.1</span></li>
 971 </ol>
 972 </li>
 973       <li><span><a rel="Section"
 974 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.6">Compatibility
 975  with Previous Versions </a> ... 19.6</span>
 976 <ol>
 977
 978          <li><span><a rel="Section"
 979 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.6.1">Changes
 980  from HTTP/1</a> ... 19.6.1</span></li>
 981          <li><span><a rel="Section"
 982 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.6.2">Compatibility
 983  with HTTP/1</a> ... 19.6.2</span></li>
 984          <li><span><a rel="Section"
 985 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.6.3">Changes
 986  from RFC 2068 </a> ... 19.6.3</span></li>
 987 </ol>
 988 </li>
 989 </ol>
 990 </li>
 991    <li><span><a rel="Section"
 992 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec20.html#sec20">Index
 993  </a> ... 20</span></li>
 994    <li><span><a rel="Section"
 995 href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec21.html#sec21">Full
 996  Copyright Statement </a> ... 21</span></li></ol></div><address>
 997 derived from <cite><a rel="derived-from"
 998 href="http://www.ietf.org/rfc/rfc2616.txt">HTTP/1.1</a></cite>, Internet
 999  RFC 2616, Fielding, et al.<br class="">
1000 using <a href="http://dev.w3.org/cvsweb/2001/rfc2html/">rfc2html</a>
1001 Revision: 1.8  Date: 2004/09/01 13:21:38  by <a
1002 href="http://www.w3.org/People/Connolly/">Dan Connolly</a>
1003 </address>
1004 </body></html>