/// <summary>
/// Writes transport headers
/// </summary>
private void WriteHeaders(ITransportHeaders headers)
{
if (headers != null)
{
// proceed headers
foreach (DictionaryEntry header in headers)
{
string headerName = (string)header.Key;
if (!BinaryWireProtocol.IsLocalHeader(headerName))
{
// check for well-known header
byte headerType = BinaryWireProtocol.GetWellKnownHeaderType(headerName);
// write header type
_writer.Write(headerType);
if (headerType == BinaryWireProtocol.HeaderType.Custom)
{
// write custom header name
_writer.Write(headerName);
}
// write header value
_writer.Write(Convert.ToString(header.Value));
}
}
}
// end-of-headers marker
_writer.Write(BinaryWireProtocol.HeaderType.EndOfHeaders);
}
public void ReceiveResponse(out ITransportHeaders responseHeaders, out Stream responseStream)
{
// transport signature
if (!MatchPreamble())
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidMessageFormat);
}
// operation opcode
byte operation = _reader.ReadByte();
if (operation != BinaryWireProtocol.OperationType.Reply)
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidMessageFormat);
}
// content length
int contentLength = _reader.ReadInt32();
// response headers
responseHeaders = ReadHeaders();
// set special headers
responseHeaders[BinaryWireProtocol.WellKnownHeaders.ConnectionId] = _connectionId;
// create stream for response reading
if (contentLength == -1)
{
responseStream = new ChunkedReadStream(_bufferedStream);
}
else
{
responseStream = new FixedReadStream(_bufferedStream, contentLength);
}
}
public void ReceiveRequest(out ITransportHeaders requestHeaders, out Stream requestStream)
{
// transport signature
if (!MatchPreamble())
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidMessageFormat);
}
// operation opcode
byte operation = _reader.ReadByte();
if (operation != BinaryWireProtocol.OperationType.Request && operation != BinaryWireProtocol.OperationType.OneWayRequest)
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidMessageFormat);
}
// content length
int contentLength = _reader.ReadInt32();
// request uri
string requestUri = _reader.ReadString();
if (!CheckRequestUri(requestUri))
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidRequestUri);
}
// request headers
requestHeaders = ReadHeaders();
// set special headers
requestHeaders[BinaryWireProtocol.WellKnownHeaders.ConnectionId] = _connectionId;
requestHeaders[BinaryWireProtocol.WellKnownHeaders.RequestUri] = requestUri;
// create stream for request reading
if (contentLength == -1)
{
requestStream = new ChunkedReadStream(_bufferedStream);
}
else
{
requestStream = new FixedReadStream(_bufferedStream, contentLength);
}
// set client principal
RemotingService.ClientPrincipal = _transport.ClientPrincipal;
}
/// <summary>
/// Reads transport headers
/// </summary>
private ITransportHeaders ReadHeaders()
{
TransportHeaders headers = new TransportHeaders();
// for error-header procesing
bool errorHeader = false;
string errorMessage = null;
byte statusCode = BinaryWireProtocol.StatusCode.InternalError;
// proceed headers
string headerName = null;
bool endOfHeaders = false;
while (!endOfHeaders)
{
// read header type
byte headerType = _reader.ReadByte();
switch (headerType)
{
case BinaryWireProtocol.HeaderType.EndOfHeaders:
// end-of-headers marker
endOfHeaders = true;
continue;
case BinaryWireProtocol.HeaderType.ErrorMessage:
// error header
errorHeader = true;
errorMessage = _reader.ReadString();
continue;
case BinaryWireProtocol.HeaderType.StatusCode:
// status code
statusCode = _reader.ReadByte();
continue;
case BinaryWireProtocol.HeaderType.Custom:
// custom header
headerName = _reader.ReadString();
break;
default:
// well-known header
headerName = BinaryWireProtocol.GetWellKnownHeader(headerType);
break;
}
if (headerName == null)
{
BinaryWireProtocol.ThrowException(BinaryWireProtocol.StatusCode.InvalidMessageFormat);
}
// read header value
headers[headerName] = _reader.ReadString();
}
if (errorHeader)
{
BinaryWireProtocol.ThrowException(statusCode, "Internal server error: " + errorMessage);
}
return(headers);
}
