Status Code

Meaning

(1xx) Informational codes

100

Continue after ICAP preview

101

Ready to switch protocol to one requested by client

(2xx) Success codes

200

The request has succeeded. The information returned depends on the method.

201

Created. The new resource is created. The URI is specified in the body.

202

Accepted. The request was accepted but the processing has not being completed.

204

No modifications needed.

(4xx) Client error codes

400

Bad request

404

ICAP Service not found.

405

Method not allowed for service (e.g., RESPMOD requested for service that supports only REQMOD)

408

Request timeout. ICAP server gave up waiting for a request from an ICAP client.

(5xx) Server error codes

500

Server error. Error on the ICAP server, such as "out of disk space"

501

Method not implemented. This response is illegal for an OPTIONS request since implementation of OPTIONS is mandatory.

502

Bad gateway. This is an ICAP proxy and proxying produced an error.

503

Service overloaded. The ICAP server has exceeded a maximum connection limit associated with this service; the ICAP client should not exceed this limit in the future.

505

ICAP version not supported by server