private string GetReasonPhrase(int statusCode)
{
string reasonPhrase = ReasonPhrase;
if (string.IsNullOrWhiteSpace(reasonPhrase))
{
// If the user hasn't set this then it is generated on the fly if possible.
reasonPhrase = HttpReasonPhrase.Get(statusCode) ?? string.Empty;
}
return(reasonPhrase);
}
public Task <Stream> UpgradeAsync()
{
if (!IsUpgradableRequest)
{
throw new InvalidOperationException("This request cannot be upgraded, it is incompatible.");
}
if (Response.HasStarted)
{
throw new InvalidOperationException("This request cannot be upgraded, the response has already started.");
}
// Set the status code and reason phrase
Response.StatusCode = StatusCodes.Status101SwitchingProtocols;
Response.ReasonPhrase = HttpReasonPhrase.Get(StatusCodes.Status101SwitchingProtocols);
Response.SendOpaqueUpgrade(); // TODO: Async
Request.SwitchToOpaqueMode();
Response.SwitchToOpaqueMode();
var opaqueStream = new OpaqueStream(Request.Body, Response.Body);
return(Task.FromResult <Stream>(opaqueStream));
}
internal unsafe void SendError(ulong requestId, int httpStatusCode, IList <string>?authChallenges = null)
{
HttpApiTypes.HTTP_RESPONSE_V2 httpResponse = new HttpApiTypes.HTTP_RESPONSE_V2();
httpResponse.Response_V1.Version = new HttpApiTypes.HTTP_VERSION();
httpResponse.Response_V1.Version.MajorVersion = (ushort)1;
httpResponse.Response_V1.Version.MinorVersion = (ushort)1;
List <GCHandle>?pinnedHeaders = null;
GCHandle gcHandle;
try
{
// Copied from the multi-value headers section of SerializeHeaders
if (authChallenges != null && authChallenges.Count > 0)
{
pinnedHeaders = new List <GCHandle>(authChallenges.Count + 3);
HttpApiTypes.HTTP_RESPONSE_INFO[] knownHeaderInfo = new HttpApiTypes.HTTP_RESPONSE_INFO[1];
gcHandle = GCHandle.Alloc(knownHeaderInfo, GCHandleType.Pinned);
pinnedHeaders.Add(gcHandle);
httpResponse.pResponseInfo = (HttpApiTypes.HTTP_RESPONSE_INFO *)gcHandle.AddrOfPinnedObject();
knownHeaderInfo[httpResponse.ResponseInfoCount].Type = HttpApiTypes.HTTP_RESPONSE_INFO_TYPE.HttpResponseInfoTypeMultipleKnownHeaders;
knownHeaderInfo[httpResponse.ResponseInfoCount].Length =
(uint)Marshal.SizeOf <HttpApiTypes.HTTP_MULTIPLE_KNOWN_HEADERS>();
HttpApiTypes.HTTP_MULTIPLE_KNOWN_HEADERS header = new HttpApiTypes.HTTP_MULTIPLE_KNOWN_HEADERS();
header.HeaderId = HttpApiTypes.HTTP_RESPONSE_HEADER_ID.Enum.HttpHeaderWwwAuthenticate;
header.Flags = HttpApiTypes.HTTP_RESPONSE_INFO_FLAGS.PreserveOrder; // The docs say this is for www-auth only.
HttpApiTypes.HTTP_KNOWN_HEADER[] nativeHeaderValues = new HttpApiTypes.HTTP_KNOWN_HEADER[authChallenges.Count];
gcHandle = GCHandle.Alloc(nativeHeaderValues, GCHandleType.Pinned);
pinnedHeaders.Add(gcHandle);
header.KnownHeaders = (HttpApiTypes.HTTP_KNOWN_HEADER *)gcHandle.AddrOfPinnedObject();
for (int headerValueIndex = 0; headerValueIndex < authChallenges.Count; headerValueIndex++)
{
// Add Value
string headerValue = authChallenges[headerValueIndex];
byte[] bytes = HeaderEncoding.GetBytes(headerValue);
nativeHeaderValues[header.KnownHeaderCount].RawValueLength = (ushort)bytes.Length;
gcHandle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
pinnedHeaders.Add(gcHandle);
nativeHeaderValues[header.KnownHeaderCount].pRawValue = (byte *)gcHandle.AddrOfPinnedObject();
header.KnownHeaderCount++;
}
// This type is a struct, not an object, so pinning it causes a boxed copy to be created. We can't do that until after all the fields are set.
gcHandle = GCHandle.Alloc(header, GCHandleType.Pinned);
pinnedHeaders.Add(gcHandle);
knownHeaderInfo[0].pInfo = (HttpApiTypes.HTTP_MULTIPLE_KNOWN_HEADERS *)gcHandle.AddrOfPinnedObject();
httpResponse.ResponseInfoCount = 1;
}
httpResponse.Response_V1.StatusCode = (ushort)httpStatusCode;
string?statusDescription = HttpReasonPhrase.Get(httpStatusCode);
uint dataWritten = 0;
uint statusCode;
byte[] byteReason = statusDescription != null?HeaderEncoding.GetBytes(statusDescription) : Array.Empty <byte>();
fixed(byte *pReason = byteReason)
{
httpResponse.Response_V1.pReason = (byte *)pReason;
httpResponse.Response_V1.ReasonLength = (ushort)byteReason.Length;
byte[] byteContentLength = new byte[] { (byte)'0' };
fixed(byte *pContentLength = byteContentLength)
{
(&httpResponse.Response_V1.Headers.KnownHeaders)[(int)HttpSysResponseHeader.ContentLength].pRawValue = (byte *)pContentLength;
(&httpResponse.Response_V1.Headers.KnownHeaders)[(int)HttpSysResponseHeader.ContentLength].RawValueLength = (ushort)byteContentLength.Length;
httpResponse.Response_V1.Headers.UnknownHeaderCount = 0;
statusCode =
HttpApi.HttpSendHttpResponse(
_requestQueue.Handle,
requestId,
0,
&httpResponse,
null,
&dataWritten,
IntPtr.Zero,
0,
SafeNativeOverlapped.Zero,
IntPtr.Zero);
}
}
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS)
{
// if we fail to send a 401 something's seriously wrong, abort the request
HttpApi.HttpCancelHttpRequest(_requestQueue.Handle, requestId, IntPtr.Zero);
}
}
finally
{
if (pinnedHeaders != null)
{
foreach (GCHandle handle in pinnedHeaders)
{
if (handle.IsAllocated)
{
handle.Free();
}
}
}
}
}