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Practical information

Internet

The Internet is a global system of interconnected computer networks.

Coding websites

Code page should be semantic, to be friendly to search engines.

RWD - Responsive Web Design

The technique of designing web pages so that its appearance and layout will automatically adjust

HTTP

Hypertext Transfer Protocol - Stateless hypertext transfer protocol.

Using the HTTP protocol are sent to request that Web documents and information about clicks on a link and information from forms. HTTP provides a standardized way of communicating computers together.

 

Below list of all response HTTP codes.

informational codes

  • 100 Countinue
  • 101 Switching Protocols
  • 110 Connection Timed Out
  • 111 Connection refused

accept codes

  • 200 OK
  • 201 Created
  • 202 Accepted
  • 203 Non-Authoritative Information
  • 204 No Content
  • 205 Reset Content
  • 206 Partial Content

redirection codes

  • 300 Multiple Choices
  • 301 Moved Permanently
  • 302 Found
  • 303 See Other
  • 304 Not Modified
  • 305 Use Proxy
  • 306 not used but restricted for older protocols verion
  • 307 Temporary Redirect

customer application error codes

  • 400 Bad Request
  • 401 Unauthorized
  • 402 Payment Required
  • 403 Forbidden
  • 404 Not Found
  • 405 Method Not Allowed
  • 406 Not Acceptable
  • 407 Proxy Authentication Required
  • 408 Request Timeout
  • 409 Conflict
  • 410 Gone
  • 411 Length Required
  • 412 Precondition Failed
  • 413 Request Entity Too Large
  • 414 Request URL Too Long
  • 415 Unsupported Media Type
  • 416 Request Range Not Satisfied
  • 417 Expectation Failed

internal server error codes

  • 500 Internal Server Error
  • 501 Not Implemented
  • 502 Bad Gateway
  • 503 Service Unavailable
  • 504 Gateway Timeout
  • 505 HTTP Version Not Supported

 

Some codes have sections that are sub-error codes, such as 401.1, 401.2, 401.3, 401.4, 401.5. Currently, some versions of servers also show these sub-sections, such as IIS.