Ant Download Manager - User Guide
  • Appendix 2. List of HTTP errors

Appendix 2. List of HTTP errors

Some status codes (errors) are provided by the HTTP protocol. AntDM shows it as is HTTPxxx.
4xx Client errors
Bad Request
The server cannot or will not process the request due to an apparent client error (e.g., malformed request syntax, size too large, invalid request message framing, or deceptive request routing)
Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided. The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource.
The request was valid, but the server is refusing action. The user might not have the necessary permissions for a resource, or may need an account of some sort.
Not Found
The requested resource could not be found but may be available in the future. Subsequent requests by the client are permissible.
Not Acceptable
The requested resource is capable of generating only content not acceptable according to the Accept headers sent in the request.
Proxy Authentication Required
The client must first authenticate itself with the proxy.
Request Timeout
The server timed out waiting for the request. According to HTTP specifications: "The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time
Client error response code indicates that access to the target resource is no longer available at the origin server and that this condition is likely to be permanent.
5xx Server errors
 Internal Server Error
A generic error message, given when an unexpected condition was encountered and no more specific message is suitable.
Not Implemented
The server either does not recognize the request method, or it lacks the ability to fulfil the request.
Bad Gateway
The server was acting as a gateway or proxy and received an invalid response from the upstream server
Service Unavailable
The server is currently unavailable (because it is overloaded or down for maintenance). Generally, this is a temporary state
Gateway Timeout
The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.
In details see here
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