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Status Codes

Updated on 2022-06-09 GMT+08:00

Status Code

Code

Description

100

Continue

The client continues sending the request.

The server has received the initial part of the request and the client should continue sending the remaining part.

101

Switching Protocols

The requester has asked the server to switch protocols and the server has agreed to do so. The target protocol must be more advanced than the source protocol.

For example, the current HTTPS protocol is switched to a later version.

200

OK

The server has successfully processed the request.

201

Created

The request for creating a resource has been fulfilled.

202

Accepted

The request has been accepted for processing, 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 has not returned 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 the user or user agent (such as a browser) can choose the most appropriate one.

301

Moved Permanently

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

302

Found

The requested resource resides temporarily under a different URI.

303

See Other

Retrieve a location.

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

The 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 status code is returned after the client provides the authentication information, indicating that the authentication information is incorrect or invalid.

402

Payment Required

This status code is reserved for future use.

403

Forbidden

The server understood the request, but is refusing to fulfill 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 for the requested resource.

The client should not repeat the request without modifications.

406

Not Acceptable

The server cannot fulfill the request according to the content characteristics of the request.

407

Proxy Authentication Required

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

408

Request Timeout

The server times out when waiting for the request.

The client may repeat the request without modifications at any later time.

409

Conflict

The request could not be completed due to a conflict with the current state of the resource.

This status code indicates that 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 is no longer available.

The status code indicates that 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 request is larger than that a server is able to process. The server may close the connection to prevent the client from continuing the request. If the server cannot process the request temporarily, the response will contain a Retry-After header field.

414

Request URI Too Long

The URI provided was too long for the server to process.

415

Unsupported Media Type

The server is unable to 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 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 was acting as a gateway or proxy and received an invalid response from the upstream server.

503

Service Unavailable

The requested service is invalid.

The client should not repeat the request without modifications.

504

Gateway 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 HTTPS protocol version used in the request.

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