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HttpRequestError Enum

  • Reference

Definition

Namespace:
System.Net.Http
Assembly:
System.Net.Http.dll

Important

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Defines error categories representing the reason for HttpRequestException or HttpIOException.

C# 
public enum HttpRequestError
Inheritance
Object
ValueType
Enum
HttpRequestError

Fields

Name Value Description
Unknown 0

A generic or unknown error occurred.
NameResolutionError 1

The DNS name resolution failed.
ConnectionError 2

A transport-level failure occurred while connecting to the remote endpoint.
SecureConnectionError 3

An error occurred during the TLS handshake.
HttpProtocolError 4

An HTTP/2 or HTTP/3 protocol error occurred.
ExtendedConnectNotSupported 5

Extended CONNECT for WebSockets over HTTP/2 is not supported by the peer.
VersionNegotiationError 6

Cannot negotiate the HTTP version requested.
UserAuthenticationError 7

The authentication failed.
ProxyTunnelError 8

An error occurred while establishing a connection to the proxy tunnel.
InvalidResponse 9

An invalid or malformed response has been received.
ResponseEnded 10

The response ended prematurely.
ConfigurationLimitExceeded 11

The response exceeded a pre-configured limit such as MaxResponseContentBufferSize or MaxResponseHeadersLength.

Applies to

Product Versions
.NET 8, 9, 10