public override DataFrame Read()
{
try
{
if (_request == null)
{
_request = HttpParser.ReadRequestHeader(new DataReader(_stm), false, _logger);
}
if (_chunks == null)
{
_chunks = _request.ReadChunks(_config).GetEnumerator();
// If we can't move to the first chunk (headers) there is a serious issue
if (!_chunks.MoveNext())
{
throw new EndOfStreamException();
}
}
HttpRequestDataChunk chunk = _chunks.Current;
if (!_chunks.MoveNext())
{
_request = null;
_chunks = null;
}
MemoryStream stm = new MemoryStream();
DataWriter writer = new DataWriter(stm);
chunk.WriteChunk(writer);
return(new DataFrame(stm.ToArray()));
}
catch (EndOfStreamException)
{
return(null);
}
}
public override void Write(DataFrame frame)
{
Uri currUri = null;
HttpRequestDataChunk chunk = frame.Root.GetValue(DATA_NAME).Value;
if (chunk.ChunkNumber == 0)
{
int error = 0;
string message = null;
if (_currOutConn == null)
{
try
{
_logger.LogVerbose("Received new connection to {0}", chunk.Path);
currUri = new Uri(chunk.Path, UriKind.Absolute);
chunk.Path = currUri.PathAndQuery;
// Upgrade to at least version 1.0
if (chunk.Version.IsVersionUnknown)
{
chunk.Version = HttpVersion.Version10;
}
// Add a Connection: close header?
_currOutConn = new ProxyConnection();
_currOutConn.DataAdapter = new HttpProxyDataAdapter(currUri, _cancellationSource.Token);
_currOutConn.Graph = ConnectClient(_currOutConn.DataAdapter);
if (_currOutConn.Graph == null)
{
_currOutConn.DataAdapter.Close();
error = 404;
message = "Not Found";
_currOutConn = null;
}
else
{
_currOutConn.ResponseReader = GetResponse(_currOutConn, currUri, chunk.Method.Equals("HEAD", StringComparison.OrdinalIgnoreCase));
_conns.Enqueue(_currOutConn);
}
}
catch (UriFormatException)
{
error = 400;
message = "Bad Request";
}
if (error != 0)
{
ProxyConnection conn = new ProxyConnection();
conn.ResponseReader = new[] { BuildError(error, message, chunk.Method, chunk.Version) };
_conns.Enqueue(conn);
}
}
}
if (_currOutConn != null)
{
DataWriter writer = new DataWriter(new DataAdapterToStream(_currOutConn.DataAdapter.Coupling));
chunk.WriteChunk(writer);
if (chunk.FinalChunk)
{
_currOutConn = null;
}
}
else
{
// Do nothing
}
}