Clients Servers Proxies Feature 11t 0y 3n 0- 13t 1y 4n 0- 5t 0y 3n 0- H 8.1 Persistent Connections 7t 0y 5n 2- 3t 1y 4n 10- 3t 0y 4n 1- H 8.2.3 Automatic retrying of requests 5t 3y 5n 1- 5t 6y 7n 0- 3t 2y 3n 0- H 8.2.4 Use of the 100 (Continue) status 5t 1y 7n 1- 7t 3y 8n 0- 3t 1y 4n 0- H 9.2 OPTIONS 14t 0y 0n 0- 17t 1y 0n 0- 8t 0y 0n 0- H 9.3 GET 13t 0y 1n 0- 17t 1y 0n 0- 8t 0y 0n 0- H 9.4 HEAD 13t 0y 0n 1- 16t 2y 0n 0- 8t 0y 0n 0- H 9.5 POST 8t 1y 4n 1- 9t 3y 6n 0- 4t 0y 4n 0- H 9.6 PUT 5t 2y 6n 1- 5t 4y 9n 0- 2t 1y 5n 0- H 9.7 DELETE 5t 2y 5n 2- 6t 6y 5n 1- 2t 2y 4n 0- H 9.8 TRACE 6t 3y 4n 1- 4t 3y 7n 4- 3t 3y 2n 0- H 9.9 CONNECT 8t 2y 3n 1- 6t 7y 5n 0- 3t 2y 3n 0- H 10.1.1 100 Continue 2t 2y 9n 1- 2t 3y 13n 0- 2t 1y 5n 0- H 10.1.2 101 Switching Protocols 14t 0y 0n 0- 17t 1y 0n 0- 8t 0y 0n 0- H 10.2.1 200 OK 5t 2y 5n 2- 5t 4y 8n 1- 2t 1y 4n 1- H 10.2.2 201 Created 4t 1y 7n 2- 5t 1y 12n 0- 2t 0y 6n 0- H 10.2.3 202 Accepted 3t 1y 8n 2- 4t 1y 13n 0- 2t 0y 6n 0- H 10.2.4 203 Non-Authoritative Information 6t 3y 5n 0- 7t 2y 9n 0- 3t 1y 4n 0- H 10.2.5 204 No Content 3t 1y 8n 2- 4t 0y 14n 0- 2t 0y 6n 0- H 10.2.6 205 Reset Content 7t 1y 5n 1- 6t 5y 7n 0- 3t 1y 4n 0- H 10.2.7 206 Partial Content 4t 2y 7n 1- 4t 3y 11n 0- 2t 1y 5n 0- H 10.3.1 300 Multiple Choices 11t 2y 1n 0- 13t 2y 3n 0- 7t 0y 1n 0- H 10.3.2 301 Moved Permanently 7t 2y 5n 0- 10t 3y 5n 0- 4t 0y 4n 0- H 10.3.3 302 Found 5t 4y 5n 0- 4t 3y 11n 0- 2t 2y 4n 0- H 10.3.4 303 See Other 11t 1y 1n 1- 16t 1y 1n 0- 8t 0y 0n 0- H 10.3.5 304 Not Modified 3t 5y 6n 0- 2t 3y 12n 1- 2t 2y 4n 0- H 10.3.6 305 Use Proxy 7t 5y 2n 0- 7t 1y 10n 0- 5t 1y 2n 0- H 10.3.7 307 Temporary Redirect 12t 0y 1n 1- 12t 5y 1n 0- 7t 0y 1n 0- H 10.4.1 400 Bad Request 12t 2y 0n 0- 16t 2y 0n 0- 8t 0y 0n 0- H 10.4.2 401 Unauthorized 3t 6y 3n 2- 3t 5y 10n 0- 3t 4y 1n 0- H 10.4.3 402 Payment Required 10t 2y 1n 1- 12t 5y 1n 0- 7t 1y 0n 0- H 10.4.4 403 Forbidden 12t 0y 1n 1- 15t 3y 0n 0- 8t 0y 0n 0- H 10.4.5 404 Not Found 7t 2y 4n 1- 7t 6y 5n 0- 4t 1y 3n 0- H 10.4.6 405 Method Not Allowed 6t 3y 4n 1- 5t 4y 9n 0- 3t 2y 3n 0- H 10.4.7 406 Not Acceptable 11t 2y 1n 0- 8t 0y 7n 3- 7t 0y 1n 0- H 10.4.8 407 Proxy Authentication Required 4t 3y 7n 0- 4t 3y 10n 1- 2t 0y 6n 0- H 10.4.9 408 Request Timeout 4t 3y 6n 1- 3t 4y 11n 0- 2t 1y 5n 0- H 10.4.10 409 Conflict 4t 2y 7n 1- 4t 0y 14n 0- 2t 0y 6n 0- H 10.4.11 410 Gone 4t 5y 5n 0- 4t 5y 9n 0- 2t 2y 4n 0- H 10.4.12 411 Length Required 4t 4y 5n 1- 5t 6y 7n 0- 2t 2y 4n 0- H 10.4.13 412 Precondition Failed 3t 4y 6n 1- 4t 2y 12n 0- 2t 1y 5n 0- H 10.4.14 413 Request Entity Too Large 5t 2y 6n 1- 3t 2y 13n 0- 2t 1y 5n 0- H 10.4.15 414 Request-URI Too Long 5t 2y 6n 1- 4t 2y 12n 0- 3t 0y 5n 0- H 10.4.16 415 Unsupported Media Type 4t 4y 5n 1- 3t 5y 10n 0- 3t 1y 4n 0- H 10.4.17 416 Requested range not satisfiable 2t 4y 7n 1- 4t 3y 11n 0- 2t 1y 5n 0- H 10.4.18 417 Expectation Failed 6t 2y 4n 2- 7t 7y 4n 0- 4t 1y 3n 0- H 10.5.1 500 Internal Server Error 6t 2y 4n 2- 7t 8y 3n 0- 4t 1y 3n 0- H 10.5.2 501 Not Implemented 4t 2y 6n 2- 3t 2y 10n 3- 2t 1y 5n 0- H 10.5.3 502 Bad Gateway 6t 3y 4n 1- 5t 3y 10n 0- 3t 2y 3n 0- H 10.5.4 503 Service Unavailable 5t 3y 4n 2- 4t 4y 7n 3- 3t 2y 3n 0- H 10.5.5 504 Gateway Timeout 4t 2y 6n 2- 4t 6y 8n 0- 2t 1y 5n 0- H 10.5.6 505 HTTP Version Not Supported 4t 4y 5n 1- 6t 6y 6n 0- 2t 2y 4n 0- H 13.3.3 Strong entity tags 1t 5y 7n 1- 3t 5y 10n 0- 1t 3y 4n 0- H 13.3.3 Weak entity tags 12t 0y 1n 1- 13t 2y 3n 0- 8t 0y 0n 0- H 14.1 Accept 8t 1y 4n 1- 9t 3y 6n 0- 5t 0y 3n 0- H 14.2 Accept-Charset 9t 1y 4n 0- 6t 6y 6n 0- 4t 1y 3n 0- H 14.3 Accept-Encoding 7t 2y 4n 1- 10t 3y 5n 0- 4t 1y 3n 0- H 14.4 Accept-Language 6t 2y 5n 1- 6t 6y 6n 0- 2t 2y 4n 0- H 14.5 Accept-Ranges 7t 1y 5n 1- 5t 2y 4n 7- 4t 1y 3n 0- H 14.6 Age 3t 3y 6n 2- 7t 8y 3n 0- 2t 3y 3n 0- H 14.7 Allow 12t 0y 2n 0- 12t 5y 1n 0- 7t 0y 1n 0- H 14.8 Authorization 10t 2y 1n 1- 12t 5y 1n 0- 7t 1y 0n 0- H 14.9 Cache-Control 14t 0y 0n 0- 13t 4y 1n 0- 8t 0y 0n 0- H 14.10 Connection 11t 2y 1n 0- 10t 6y 2n 0- 6t 1y 1n 0- H 14.11 Content-Encoding 5t 3y 5n 1- 7t 6y 5n 0- 3t 2y 3n 0- H 14.12 Content-Language 13t 0y 1n 0- 14t 3y 1n 0- 8t 0y 0n 0- H 14.13 Content-Length 8t 1y 4n 1- 5t 5y 8n 0- 4t 1y 3n 0- H 14.14 Content-Location 3t 1y 10n 0- 4t 5y 9n 0- 2t 1y 5n 0- H 14.15 Content-MD5 8t 1y 4n 1- 6t 7y 5n 0- 4t 1y 3n 0- H 14.16 Content-Range 12t 0y 1n 1- 15t 3y 0n 0- 8t 0y 0n 0- H 14.17 Content-Type 12t 0y 1n 1- 15t 3y 0n 0- 8t 0y 0n 0- H 14.18 Date 6t 3y 4n 1- 7t 7y 4n 0- 3t 2y 3n 0- H 14.19 ETag 4t 1y 9n 0- 5t 4y 9n 0- 2t 1y 5n 0- H 14.20 Expect 8t 0y 5n 1- 10t 4y 4n 0- 5t 0y 3n 0- H 14.21 Expires 6t 3y 4n 1- 4t 4y 8n 2- 2t 3y 3n 0- H 14.22 From 14t 0y 0n 0- 15t 3y 0n 0- 8t 0y 0n 0- H 14.23 Host 5t 3y 4n 2- 6t 7y 5n 0- 2t 3y 3n 0- H 14.24 If-Match 12t 0y 1n 1- 16t 2y 0n 0- 8t 0y 0n 0- H 14.25 If-Modified-Since 4t 2y 7n 1- 6t 6y 6n 0- 2t 2y 4n 0- H 14.26 If-None-Match 5t 1y 7n 1- 3t 6y 9n 0- 2t 1y 5n 0- H 14.27 If-Range 5t 2y 5n 2- 8t 6y 4n 0- 3t 2y 3n 0- H 14.28 If-Unmodified-Since 9t 0y 4n 1- 13t 2y 3n 0- 5t 0y 3n 0- H 14.29 Last-Modified 10t 1y 3n 0- 9t 5y 4n 0- 4t 1y 3n 0- H 14.30 Location 4t 2y 6n 2- 3t 2y 10n 3- 3t 2y 3n 0- H 14.31 Max-Forwards 10t 2y 1n 1- 12t 3y 3n 0- 7t 1y 0n 0- H 14.32 Pragma 12t 1y 1n 0- 8t 0y 5n 5- 7t 0y 1n 0- H 14.33 Proxy-Authenticate 12t 1y 1n 0- 8t 0y 5n 5- 7t 0y 1n 0- H 14.34 Proxy-Authorization 7t 2y 4n 1- 6t 6y 6n 0- 3t 2y 3n 0- H 14.35 Range 8t 1y 5n 0- 8t 3y 6n 1- 4t 0y 4n 0- H 14.36 Referer 3t 3y 8n 0- 4t 3y 11n 0- 2t 2y 4n 0- H 14.37 Retry-After 6t 2y 4n 2- 9t 6y 3n 0- 3t 2y 3n 0- H 14.38 Server 3t 3y 8n 0- 2t 2y 14n 0- 1t 1y 6n 0- H 14.39 TE 3t 2y 9n 0- 1t 2y 15n 0- 0t 2y 6n 0- H 14.40 Trailer 11t 1y 2n 0- 10t 6y 2n 0- 6t 1y 1n 0- H 14.41 Transfer-Encoding 2t 2y 9n 1- 2t 2y 14n 0- 2t 1y 5n 0- H 14.42 Upgrade 12t 1y 1n 0- 10t 2y 2n 4- 8t 0y 0n 0- H 14.43 User-Agent 5t 1y 7n 1- 7t 4y 7n 0- 4t 1y 3n 0- H 14.44 Vary 9t 0y 3n 2- 8t 0y 7n 3- 7t 0y 1n 0- H 14.45 Via 4t 3y 5n 2- 2t 3y 12n 1- 2t 3y 3n 0- H 14.46 Warning 11t 1y 2n 0- 14t 3y 1n 0- 7t 1y 0n 0- H 14.47 WWW-Authenticate 13t 0y 1n 0- 15t 2y 1n 0- 8t 0y 0n 0- A 2 Basic Authentication 2t 0y 12n 0- 4t 5y 9n 0- 1t 0y 7n 0- A 3.2.1 WWW-Authenticate Digest 1t 0y 13n 0- 2t 1y 15n 0- 0t 0y 8n 0- A 3.2.1 qop-options auth 1t 0y 13n 0- 1t 0y 17n 0- 0t 0y 8n 0- A 3.2.1 qop-options auth-int 2t 0y 12n 0- 4t 5y 9n 0- 1t 0y 7n 0- A 3.2.2 Authorization Digest 1t 0y 13n 0- 2t 1y 15n 0- 0t 0y 8n 0- A 3.2.2 request qop auth 1t 0y 13n 0- 1t 0y 17n 0- 0t 0y 8n 0- A 3.2.2 request qop auth-int 2t 0y 12n 0- 3t 2y 13n 0- 1t 0y 7n 0- A 3.2.3 Authentication-Info Digest 1t 0y 13n 0- 1t 2y 15n 0- 0t 0y 8n 0- A 3.2.3 response qop auth 1t 0y 13n 0- 1t 0y 17n 0- 0t 0y 8n 0- A 3.2.3 response qop auth-int 11t 0y 3n 0- 7t 0y 7n 4- 6t 0y 2n 0- A 4.1 Proxy-Authenticate Basic 2t 0y 12n 0- 1t 1y 12n 4- 1t 0y 7n 0- A 4.2 Proxy-Authenticate Digest 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy qop-options auth 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy qop-options auth-int 2t 0y 12n 0- 1t 1y 12n 4- 1t 0y 7n 0- A 4.2 Proxy Authorization Digest 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy request qop auth 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy request qop auth-int 1t 1y 12n 0- 1t 0y 13n 4- 1t 0y 7n 0- A 4.2 Proxy Authentication-Info Digest 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy response qop auth 0t 1y 13n 0- 0t 0y 14n 4- 0t 0y 8n 0- A 4.2 Proxy response qop auth-int