private bool SetHeadersAsync(SimpleAsyncResult result, bool setInternalLength)
{
if (headersSent)
{
return(false);
}
string method = request.Method;
bool no_writestream = (method == "GET" || method == "CONNECT" || method == "HEAD" || method == "TRACE");
bool webdav = (method == "PROPFIND" || method == "PROPPATCH" || method == "MKCOL" || method == "COPY" || method == "MOVE" || method == "LOCK" ||
method == "UNLOCK");
if (setInternalLength && !no_writestream && writeBuffer != null)
{
request.InternalContentLength = writeBuffer.Length;
}
if (!(sendChunked || request.ContentLength > -1 || no_writestream || webdav))
{
return(false);
}
headersSent = true;
headers = request.GetRequestHeaders();
var innerResult = cnc.BeginWrite(request, headers, 0, headers.Length, r =>
{
try
{
cnc.EndWrite(request, true, r);
if (!initRead)
{
initRead = true;
WebConnection.InitRead(cnc);
}
var cl = request.ContentLength;
if (!sendChunked && cl == 0)
{
requestWritten = true;
}
result.SetCompleted(false);
}
catch (WebException e)
{
result.SetCompleted(false, e);
}
catch (Exception e)
{
result.SetCompleted(false, new WebException("Error writing headers", e, WebExceptionStatus.SendFailure));
}
}, null);
return(innerResult != null);
}
public static void Run(SimpleAsyncFunc func, SimpleAsyncCallback callback)
{
var result = new SimpleAsyncResult(callback);
try
{
if (!func(result))
{
result.SetCompleted(true);
}
}
catch (Exception ex)
{
result.SetCompleted(true, ex);
}
}
internal bool WriteRequestAsync(SimpleAsyncResult result)
{
if (requestWritten)
{
return(false);
}
requestWritten = true;
if (sendChunked || !allowBuffering || writeBuffer == null)
{
return(false);
}
// Keep the call for a potential side-effect of GetBuffer
var bytes = writeBuffer.GetBuffer();
var length = (int)writeBuffer.Length;
if (request.ContentLength != -1 && request.ContentLength < length)
{
nextReadCalled = true;
cnc.Close(true);
throw new WebException("Specified Content-Length is less than the number of bytes to write", null, WebExceptionStatus.ServerProtocolViolation, null);
}
SetHeadersAsync(true, inner =>
{
if (inner.GotException)
{
result.SetCompleted(inner.CompletedSynchronously, inner.Exception);
return;
}
if (cnc.Data.StatusCode != 0 && cnc.Data.StatusCode != 100)
{
result.SetCompleted(inner.CompletedSynchronously);
return;
}
if (!initRead)
{
initRead = true;
WebConnection.InitRead(cnc);
}
if (length == 0)
{
complete_request_written = true;
result.SetCompleted(inner.CompletedSynchronously);
return;
}
cnc.BeginWrite(request, bytes, 0, length, r =>
{
try
{
complete_request_written = cnc.EndWrite(request, false, r);
result.SetCompleted(false);
}
catch (Exception exc)
{
result.SetCompleted(false, exc);
}
}, null);
});
return(true);
}
