// Reads a single FIX messages and returns it. It shall contain
// all fields, including header and trailer. No validation is
// performed.
//
// This method is NOT thread-safe.
//
// Throws MessageTooLargeException if incoming message exceeds
// MaxMessageSize. After that every call to ReadMessage() will throw
// MessageTooLargeException.
//
// Throws EmptyStreamException if nothing can be read from the
// underlying stream.
public async Task<ArraySegment<byte>> ReadMessage(Stream strm)
{
Assert.True(strm != null);
var trailerMatcher = new MessageTrailerMatcher();
int messageEnd = trailerMatcher.FindTrailer(_buf, _startPos, _endPos);
// Keep reading from the underlying stream until we find trailer.
while (messageEnd == 0)
{
EnsureBufferSpace();
Assert.True(_endPos < _buf.Length, "_endPos = {0}, _buf.Length = {1}", _endPos, _buf.Length);
int read = await strm.ReadAsync(_buf, _endPos, _buf.Length - _endPos);
if (read <= 0)
{
var partial = new ArraySegment<byte>(_buf, _startPos, _endPos - _startPos);
throw new EmptyStreamException("Read so far: " + partial.AsAscii());
}
messageEnd = trailerMatcher.FindTrailer(_buf, _endPos, _endPos + read);
_endPos += read;
}
var res = new ArraySegment<byte>(_buf, _startPos, messageEnd - _startPos);
_startPos = messageEnd;
if (_log.IsDebugEnabled) _log.Debug("IN: {0}", res.AsAscii());
else _log.Info("IN: {0}", Truncate(res.AsAscii(), 1024));
return res;
}
// Reads a single FIX messages and returns it. It shall contain
// all fields, including header and trailer. No validation is
// performed.
//
// This method is NOT thread-safe.
//
// Throws MessageTooLargeException if incoming message exceeds
// MaxMessageSize. After that every call to ReadMessage() will throw
// MessageTooLargeException.
//
// Throws EmptyStreamException if nothing can be read from the
// underlying stream.
public async Task <ArraySegment <byte> > ReadMessage(Stream strm)
{
Assert.True(strm != null);
var trailerMatcher = new MessageTrailerMatcher();
int messageEnd = trailerMatcher.FindTrailer(_buf, _startPos, _endPos);
// Keep reading from the underlying stream until we find trailer.
while (messageEnd == 0)
{
EnsureBufferSpace();
Assert.True(_endPos < _buf.Length, "_endPos = {0}, _buf.Length = {1}", _endPos, _buf.Length);
int read = await strm.ReadAsync(_buf, _endPos, _buf.Length - _endPos);
if (read <= 0)
{
var partial = new ArraySegment <byte>(_buf, _startPos, _endPos - _startPos);
throw new EmptyStreamException("Read so far: " + partial.AsAscii());
}
messageEnd = trailerMatcher.FindTrailer(_buf, _endPos, _endPos + read);
_endPos += read;
}
var res = new ArraySegment <byte>(_buf, _startPos, messageEnd - _startPos);
_startPos = messageEnd;
if (_log.IsDebugEnabled)
{
_log.Debug("IN: {0}", res.AsAscii());
}
else
{
_log.Info("IN: {0}", Truncate(res.AsAscii(), 1024));
}
return(res);
}
