/*
12.3
HttpSendHttpResponse() and HttpSendResponseEntityBody() Flag Values.
The following flags can be used on calls to HttpSendHttpResponse() and HttpSendResponseEntityBody() API calls:
#define HTTP_SEND_RESPONSE_FLAG_DISCONNECT 0x00000001
#define HTTP_SEND_RESPONSE_FLAG_MORE_DATA 0x00000002
#define HTTP_SEND_RESPONSE_FLAG_RAW_HEADER 0x00000004
#define HTTP_SEND_RESPONSE_FLAG_VALID 0x00000007
HTTP_SEND_RESPONSE_FLAG_DISCONNECT:
specifies that the network connection should be disconnected immediately after
sending the response, overriding the HTTP protocol's persistent connection features.
HTTP_SEND_RESPONSE_FLAG_MORE_DATA:
specifies that additional entity body data will be sent by the caller. Thus,
the last call HttpSendResponseEntityBody for a RequestId, will have this flag reset.
HTTP_SEND_RESPONSE_RAW_HEADER:
specifies that a caller of HttpSendResponseEntityBody() is intentionally omitting
a call to HttpSendHttpResponse() in order to bypass normal header processing. The
actual HTTP header will be generated by the application and sent as entity body.
This flag should be passed on the first call to HttpSendResponseEntityBody, and
not after. Thus, flag is not applicable to HttpSendHttpResponse.
*/
internal unsafe uint SendHeaders(UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK* pDataChunk,
HttpResponseStreamAsyncResult asyncResult,
UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS flags,
bool isWebSocketHandshake) {
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() pDataChunk:" + ValidationHelper.ToString((IntPtr)pDataChunk) + " asyncResult:" + ValidationHelper.ToString(asyncResult));
GlobalLog.Assert(!SentHeaders, "HttpListenerResponse#{0}::SendHeaders()|SentHeaders is true.", ValidationHelper.HashString(this));
if (StatusCode == (int)HttpStatusCode.Unauthorized) { // User set 401
// Using the configured Auth schemes, populate the auth challenge headers. This is for scenarios where
// Anonymous access is allowed for some resources, but the server later determines that authorization
// is required for this request.
HttpListenerContext.SetAuthenticationHeaders();
}
// Log headers
if(Logging.On) {
StringBuilder sb = new StringBuilder("HttpListenerResponse Headers:\n");
for (int i=0; i<Headers.Count; i++) {
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", sb.ToString());
}
m_ResponseState = ResponseState.SentHeaders;
/*
if (m_BoundaryType==BoundaryType.Raw) {
use HTTP_SEND_RESPONSE_FLAG_RAW_HEADER;
}
*/
uint statusCode;
uint bytesSent;
List<GCHandle> pinnedHeaders = SerializeHeaders(ref m_NativeResponse.Headers, isWebSocketHandshake);
try {
if (pDataChunk!=null) {
m_NativeResponse.EntityChunkCount = 1;
m_NativeResponse.pEntityChunks = pDataChunk;
}
else if (asyncResult!=null && asyncResult.pDataChunks!=null) {
m_NativeResponse.EntityChunkCount = asyncResult.dataChunkCount;
m_NativeResponse.pEntityChunks = asyncResult.pDataChunks;
}
else {
m_NativeResponse.EntityChunkCount = 0;
m_NativeResponse.pEntityChunks = null;
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() calling UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse flags:" + flags);
if (StatusDescription.Length>0) {
byte[] statusDescriptionBytes = new byte[WebHeaderCollection.HeaderEncoding.GetByteCount(StatusDescription)];
fixed (byte* pStatusDescription = statusDescriptionBytes) {
m_NativeResponse.ReasonLength = (ushort)statusDescriptionBytes.Length;
WebHeaderCollection.HeaderEncoding.GetBytes(StatusDescription, 0, statusDescriptionBytes.Length, statusDescriptionBytes, 0);
m_NativeResponse.pReason = (sbyte*)pStatusDescription;
fixed (UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE* pResponse = &m_NativeResponse) {
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult==null ? null : asyncResult.m_pOverlapped,
null );
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
}
else {
fixed (UnsafeNclNativeMethods.HttpApi.HTTP_RESPONSE* pResponse = &m_NativeResponse) {
if (asyncResult != null)
{
HttpListenerContext.EnsureBoundHandle();
}
statusCode =
UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse(
HttpListenerContext.RequestQueueHandle,
HttpListenerRequest.RequestId,
(uint)flags,
pResponse,
null,
&bytesSent,
SafeLocalFree.Zero,
0,
asyncResult==null ? null : asyncResult.m_pOverlapped,
null );
if (asyncResult != null &&
statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
asyncResult.IOCompleted(statusCode, bytesSent);
// IO operation completed synchronously - callback won't be called to signal completion.
}
}
}
GlobalLog.Print("HttpListenerResponse#" + ValidationHelper.HashString(this) + "::SendHeaders() call to UnsafeNclNativeMethods.HttpApi.HttpSendHttpResponse returned:" + statusCode);
}
finally {
FreePinnedHeaders(pinnedHeaders);
}
return statusCode;
}
