HTTP status codes

10. 04. 2021

Obsah článku

In HTTP communication, so-called `state codes' are transmitted, which is information about how the transfer was made. I'm sure you know that a `200` code means success and a `404` code means a non-existent page.

Status codes are divided into several groups according to their prefix.

1xx Informational

Code	Meaning
`100`	Continue
`101`	Switch Protocol

2xx Success

Code	Meaning
`200`	OK (all right)
`201`	Created
`202`	Accepted
`203`	Unauthorized information
`204`	No content
`205`	Restore content
`206`	Partial content

3xx Redirection

Code	Meaning
`300`	Multiple Choice
`301`	Permanent Redirect
`302`	Found
`303`	See more
`304`	No change
`305`	Use proxy
`306`	Old but reserved for future use
`307`	Temporary redirection

4xx Client (user) error

Code	Meaning
`400`	Bad request
`401`	Unauthorized connection
`402`	Payment Requested
`403`	Disabled
`404`	Not Found
`405`	Method not allowed
`406`	Unacceptable
`407`	Proxy authentication required
`408`	Request timed out
`409`	Network conflict
`410`	Data gone
`411`	Requested length does not match
`412`	Assumption failed
`413`	Entity request is too large
`414`	Request-URI is too long
`415`	Unsupported media type
`416`	Requested scope not satisfactory
`417`	Expectation failed

5xx Server error

Code	Meaning
`500`	Internal server error
`501`	Not implemented
`502`	Bad Gateway
`503`	Service Unavailable
`504`	Gateway timeout expired
`505`	HTTP version not supported
`509`	Bandwidth Limit Exceeded

Jan Barášek Více o autorovi

Autor článku pracuje jako seniorní vývojář a software architekt v Praze. Navrhuje a spravuje velké webové aplikace, které znáte a používáte. Od roku 2009 nabral bohaté zkušenosti, které tímto webem předává dál.

Rád vám pomůžu: