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WebExceptionStatus Enumeration

Defines status codes for the WebException class.

Namespace:  System.Net
Assembly:  System (in System.dll)

type WebExceptionStatus

Member nameDescription
Supported by Portable Class LibrarySuccessNo error was encountered.
NameResolutionFailureThe name resolver service could not resolve the host name.
Supported by Portable Class LibraryConnectFailureThe remote service point could not be contacted at the transport level.
ReceiveFailureA complete response was not received from the remote server.
Supported by Portable Class LibrarySendFailureA complete request could not be sent to the remote server.
PipelineFailureThe request was a piplined request and the connection was closed before the response was received.
Supported by Portable Class LibraryRequestCanceledThe request was canceled, the WebRequest.Abort method was called, or an unclassifiable error occurred. This is the default value for Status.
ProtocolErrorThe response received from the server was complete but indicated a protocol-level error. For example, an HTTP protocol error such as 401 Access Denied would use this status.
ConnectionClosedThe connection was prematurely closed.
TrustFailureA server certificate could not be validated.
SecureChannelFailureAn error occurred while establishing a connection using SSL.
ServerProtocolViolationThe server response was not a valid HTTP response.
KeepAliveFailureThe connection for a request that specifies the Keep-alive header was closed unexpectedly.
Supported by Portable Class LibraryPendingAn internal asynchronous request is pending.
TimeoutNo response was received during the time-out period for a request.
ProxyNameResolutionFailureThe name resolver service could not resolve the proxy host name.
Supported by Portable Class LibraryUnknownErrorAn exception of unknown type has occurred.
Supported by Portable Class LibraryMessageLengthLimitExceededA message was received that exceeded the specified limit when sending a request or receiving a response from the server.
CacheEntryNotFoundThe specified cache entry was not found.
RequestProhibitedByCachePolicyThe request was not permitted by the cache policy. In general, this occurs when a request is not cacheable and the effective policy prohibits sending the request to the server. You might receive this status if a request method implies the presence of a request body, a request method requires direct interaction with the server, or a request contains a conditional header.
RequestProhibitedByProxyThis request was not permitted by the proxy.

The WebExceptionStatus enumeration defines the status codes assigned to the Status property.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.