Updated on 2023-11-16 GMT+08:00

Status Codes

Table 1 describes status codes.

Table 1 Status codes

Status Code

Message

Description

100

Continue

The client should continue with its request.

This interim response is used to inform the client that the initial part of the requests has been received and not rejected by the server.

101

Switching Protocols

The protocol should be switched. The protocol can only be switched to a more advanced protocol.

For example, a new HTTP protocol.

200

OK

The request has succeeded.

201

Created

The request has been fulfilled, resulting in the creation of a new resource.

202

Accepted

The request has been accepted, but the processing has not been completed.

203

Non-Authoritative Information

The server successfully processed the request, but is returning information that may be from another source.

204

No Content

The server has successfully processed the request, but does not return any content.

The status code is returned in response to an HTTP OPTIONS request.

205

Reset Content

The server has fulfilled the request, but the requester is required to reset the content.

206

Partial Content

The server has successfully processed a part of the GET request.

300

Multiple Choices

There are multiple options for the location of the requested resource. The response contains a list of resource characteristics and addresses from which a user terminal (such as a browser) can choose the most appropriate one.

301

Moved Permanently

The requested resource has been assigned with a new permanent URI. This new URI is contained in the response.

302

Found

The requested resource resides temporarily under a different URI.

303

See Other

The response to the request can be found under a different URI,

and should be retrieved using a GET or POST method.

304

Not Modified

The requested resource has not been modified. When the server returns this status code, it does not return any resources.

305

Use Proxy

The requested resource must be accessed through a proxy.

306

Unused

This HTTP status code is no longer used.

400

Bad Request

The request is invalid.

The client should not repeat the request without modifications.

401

Unauthorized

The authorization information provided by the client is incorrect or invalid.

402

Payment Required

This status code is reserved for future use.

403

Forbidden

The request is rejected.

The server has received the request and understood it, but the server is refusing to respond to it. The client should not repeat the request without modifications.

404

Not Found

The requested resource cannot be found.

The client should not repeat the request without modifications.

405

Method Not Allowed

The method specified in the request is not supported by the requested resource.

The client should not repeat the request without modifications.

406

Not Acceptable

The server cannot fulfill the request based on the content characteristics of the request.

407

Proxy Authentication Required

This status code is similar to 401, but indicates that the client must authenticate itself with the proxy first.

408

Request Timeout

The client does not produce a request within the time that the server was prepared to wait.

The client may repeat the request without modifications later.

409

Conflict

The request cannot be processed due to a conflict.

The resource that the client attempts to create already exits, or the request fails to be processed because of the update of the conflict request.

410

Gone

The requested resource cannot be found.

The requested resource has been deleted permanently.

411

Length Required

The server refuses to process the request without a defined Content-Length.

412

Precondition Failed

The server does not meet one of the preconditions that the requester puts on the request.

413

Request Entity Too Large

The server refuses to process a request because the request entity is too large. The server may disable the connection to prevent the client from sending requests consecutively. If the server cannot process the request temporarily, the response will contain a Retry-After field.

414

Request-URI Too Long

The request URI is too long for the server to process.

415

Unsupported Media Type

The server cannot process the media format in the request.

416

Requested Range Not Satisfiable

The requested range is invalid.

417

Expectation Failed

The server fails to meet the requirements of the Expect request-header field.

422

Unprocessable Entity

The request is well-formed but is unable to be processed due to semantic errors.

429

Too Many Requests

The client sends excessive requests to the server within a given time (exceeding the limit on the access frequency of the client), or the server receives excessive requests within a given time (beyond its processing capability). In this case, the client should repeat requests after the time specified in the Retry-After header of the response expires.

500

Internal Server Error

The server is able to receive the request but unable to understand the request.

501

Not Implemented

The server does not support the function required to fulfill the request.

502

Bad Gateway

The server acting as a gateway or proxy receives an invalid response from a remote server.

503

Service Unavailable

The requested service is invalid.

The client should not repeat the request without modifications.

504

Server Timeout

The request cannot be fulfilled within a given time. This status code is returned to the client only when the timeout parameter is specified in the request.

505

HTTP Version Not Supported

The server does not support the HTTP protocol version used in the request.