public EasyRequest(CurlHandler handler, MultiAgent agent, HttpRequestMessage requestMessage, CancellationToken cancellationToken) :
base(TaskCreationOptions.RunContinuationsAsynchronously)
{
Debug.Assert(handler != null, $"Expected non-null {nameof(handler)}");
Debug.Assert(agent != null, $"Expected non-null {nameof(agent)}");
Debug.Assert(requestMessage != null, $"Expected non-null {nameof(requestMessage)}");
_handler = handler;
_associatedMultiAgent = agent;
_requestMessage = requestMessage;
_cancellationToken = cancellationToken;
_responseMessage = new CurlResponseMessage(this);
}
public EasyRequest(CurlHandler handler, HttpRequestMessage requestMessage, CancellationToken cancellationToken) :
base(TaskCreationOptions.RunContinuationsAsynchronously)
{
_handler = handler;
_requestMessage = requestMessage;
_cancellationToken = cancellationToken;
if (requestMessage.Content != null)
{
_requestContentStream = new HttpContentAsyncStream(requestMessage.Content);
}
_responseMessage = new CurlResponseMessage(this);
}
private HttpClientHandler(bool useSocketsHttpHandler) // used by parameterless ctor and as hook for testing
{
if (useSocketsHttpHandler)
{
_socketsHttpHandler = new SocketsHttpHandler();
_diagnosticsHandler = new DiagnosticsHandler(_socketsHttpHandler);
ClientCertificateOptions = ClientCertificateOption.Manual;
}
else
{
_curlHandler = new CurlHandler();
_diagnosticsHandler = new DiagnosticsHandler(_curlHandler);
}
}
private static ulong CurlReceiveHeadersCallback(IntPtr buffer, ulong size, ulong nitems, IntPtr context)
{
CurlHandler.VerboseTrace("size: " + size + ", nitems: " + nitems);
size *= nitems;
if (size == 0)
{
return(0);
}
EasyRequest easy;
if (TryGetEasyRequestFromContext(context, out easy))
{
try
{
// The callback is invoked once per header; multi-line headers get merged into a single line.
string responseHeader = Marshal.PtrToStringAnsi(buffer).Trim();
HttpResponseMessage response = easy._responseMessage;
if (!TryParseStatusLine(response, responseHeader, easy))
{
int index = 0;
string headerName = CurlResponseParseUtils.ReadHeaderName(responseHeader, out index);
if (headerName != null)
{
string headerValue = responseHeader.Substring(index).Trim();
if (!response.Headers.TryAddWithoutValidation(headerName, headerValue))
{
response.Content.Headers.TryAddWithoutValidation(headerName, headerValue);
}
else if (easy._isRedirect && string.Equals(headerName, HttpKnownHeaderNames.Location, StringComparison.OrdinalIgnoreCase))
{
HandleRedirectLocationHeader(easy, headerValue);
}
}
}
return(size);
}
catch (Exception ex)
{
easy.FailRequest(ex); // cleanup will be handled by main processing loop
}
}
// Returing a value other than size fails the callback and forces
// request completion with an error
return(size - 1);
}
public HttpClientHandler()
{
if (UseManagedHandler)
{
_managedHandler = new ManagedHandler()
{
SslOptions = new SslClientAuthenticationOptions()
};
_diagnosticsHandler = new DiagnosticsHandler(_managedHandler);
}
else
{
_curlHandler = new CurlHandler();
_diagnosticsHandler = new DiagnosticsHandler(_curlHandler);
}
}
private static CurlSeekResult CurlSeekCallback(IntPtr context, long offset, int origin)
{
CurlHandler.VerboseTrace("offset: " + offset + ", origin: " + origin);
EasyRequest easy;
if (TryGetEasyRequestFromContext(context, out easy))
{
try
{
// If libcul is requesting we seek back to the beginning and if the request
// content stream is in a position to reset itself, reset and let libcurl
// know we did the seek; otherwise, let it know we can't seek.
if (offset == 0 && origin == (int)SeekOrigin.Begin &&
easy._requestContentStream != null && easy._requestContentStream.TryReset())
{
// Dump any state associated with the old stream's position
if (easy._sendTransferState != null)
{
easy._sendTransferState.SetTaskOffsetCount(null, 0, 0);
}
// Restart the transfer
easy._requestContentStream.Run();
return(CurlSeekResult.CURL_SEEKFUNC_OK);
}
else
{
return(CurlSeekResult.CURL_SEEKFUNC_CANTSEEK);
}
}
catch (Exception ex)
{
easy.FailRequest(ex); // cleanup will be handled by main processing loop
}
}
// Something went wrong
return(CurlSeekResult.CURL_SEEKFUNC_FAIL);
}
private static ulong CurlReceiveBodyCallback(
IntPtr buffer, ulong size, ulong nitems, IntPtr context)
{
CurlHandler.VerboseTrace("size: " + size + ", nitems: " + nitems);
size *= nitems;
EasyRequest easy;
if (TryGetEasyRequestFromContext(context, out easy))
{
try
{
if (!(easy.Task.IsCanceled || easy.Task.IsFaulted))
{
// Complete the task if it hasn't already been. This will make the
// stream available to consumers. A previous write callback
// may have already completed the task to publish the response.
easy.EnsureResponseMessagePublished();
// Try to transfer the data to a reader. This will return either the
// amount of data transferred (equal to the amount requested
// to be transferred), or it will return a pause request.
return(easy._responseMessage.ResponseStream.TransferDataToStream(buffer, (long)size));
}
}
catch (Exception ex)
{
easy.FailRequest(ex); // cleanup will be handled by main processing loop
}
}
// Returing a value other than size fails the callback and forces
// request completion with an error.
CurlHandler.VerboseTrace("Error: returning a bad size to abort the request");
return((size > 0) ? size - 1 : 1);
}
private void VerboseTrace(string text = null, [CallerMemberName] string memberName = null)
{
CurlHandler.VerboseTrace(text, memberName, _easy);
}
private void EventSourceTrace(string message, [CallerMemberName] string memberName = null)
{
CurlHandler.EventSourceTrace(message, easy: this, memberName: memberName);
}
private void EventSourceTrace <TArg0>(string formatMessage, TArg0 arg0, [CallerMemberName] string memberName = null)
{
CurlHandler.EventSourceTrace(formatMessage, arg0, easy: this, memberName: memberName);
}
private void EventSourceTrace <TArg0, TArg1, TArg2>(string formatMessage, TArg0 arg0, TArg1 arg1, TArg2 arg2, [CallerMemberName] string memberName = null)
{
CurlHandler.EventSourceTrace(formatMessage, arg0, arg1, arg2, agent: null, easy: _easy, memberName: memberName);
}
public HttpClientHandler()
{
_curlHandler = new CurlHandler();
}
public HttpClientHandler()
{
_curlHandler = new CurlHandler();
}
private void VerboseTrace(string text = null, [CallerMemberName] string memberName = null, EasyRequest easy = null)
{
CurlHandler.VerboseTrace(text, memberName, easy, agent: this);
}
public HttpClientHandler()
{
_curlHandler = new CurlHandler();
_diagnosticsPipeline = new DiagnosticsHandler(_curlHandler);
}
public HttpClientHandler()
{
_curlHandler = new CurlHandler();
// TODO: Set same defaults as Windows handler
AllowAutoRedirect = true;
}
private void VerboseTrace(string text = null, [CallerMemberName] string memberName = null)
{
CurlHandler.VerboseTrace(text, memberName, easy: this, agent: null);
}
public RequestCompletionSource(CurlHandler handler)
{
this._handler = handler;
}