public void Init()
{
this.RawData = this.ReadBinaries();
this.IpRanges = this.GetEmptyRangesIps(this.RawData.IpRangesCount);
this.Locations = this.GetEmptyLocations(this.RawData.LocationsCount);
var ipRanges = this.IpRanges;
var locations = this.Locations;
BinaryReaderHelper.RawDeserializerList <IpRange>(
this.RawData.IpRangesBytes,
this.RawData.IpRangesCount,
Marshal.SizeOf <IpRange>(),
ref ipRanges);
BinaryReaderHelper.RawDeserializerList <Location>(
this.RawData.LocationsBytes,
this.RawData.LocationsCount,
Marshal.SizeOf <Location>(),
ref locations);
IpRanges = ipRanges;
Locations = locations;
InitIndexes();
OnIndexesCreated?.Invoke();
}
public ArraySegment <byte> ReadValue(int length)
{
Trace.Assert(length <= Int32.MaxValue - 2);
m_buffer.EnsureCapacity(length + 2);
BinaryReaderHelper.ReadTo(m_reader, m_buffer.Array, 0, length + 2);
return(new ArraySegment <byte>(m_buffer.Array, 0, length));
}
private int ReadLine()
{
var position = BinaryReaderHelper.ReadToken(m_reader, m_buffer.Array, 0, m_buffer.Capacity,
token => token == 0x0A);
if (position == -1)
{
throw new InvalidOperationException("End of line not found");
}
return(--position);
}
private int ReadToken()
{
var position = BinaryReaderHelper.ReadToken(m_reader, m_buffer.Array, 0, m_buffer.Capacity,
token => token == 0x20 || token == 0x0A);
if (position == -1)
{
throw new InvalidOperationException("Token not found");
}
if (m_buffer.Array[position] == 0x0A)
{
position--;
}
return(position);
}
public ResponseStatus ReadStatus()
{
var buffer = m_buffer.Array;
BinaryReaderHelper.ReadTo(m_reader, buffer, 0, Offset.EndOfHeader);
var totalLength = BigEndianConverter.GetInt32(buffer, Offset.TotalBodyLength);
m_buffer.EnsureCapacity(Offset.EndOfHeader + totalLength);
BinaryReaderHelper.ReadTo(m_reader, buffer, Offset.EndOfHeader, totalLength);
var status = (ResponseStatus)m_buffer.Array[Offset.Status];
if (status == ResponseStatus.NoError)
{
if (buffer[Offset.OperationCode] == 0x00)
{
status = ResponseStatus.Value;
}
}
return(status);
}
/// <summary>
/// BinaryReader.BaseStream position is preserved in cases other than Continue
/// </summary>
/// <param name="br">
/// A <see cref="BinaryReader"/>
/// </param>
/// <returns>
/// A <see cref="ProcessStatus"/>
/// ProcessStatus.Error if any errors are detected, the stream position
/// is restored to the starting position
/// ProcessStatus.NeedMoreData if we run into a situation where there isn't
/// enough data to continue processing. Stream position is at the position
/// where the internal state machine is waiting to resume when additional
/// data arrives
/// </returns>
public ProcessStatus Process(BinaryReader br)
{
if (IsDebugEnabled)
{
Log.Debug("");
}
string line;
HttpMessage.ProcessStatus processStatus;
while (true)
{
// the request response and header phases work in terms of lines,
// terminated by /r/n, this is different from the body phase that
// is a blob of bytes if "Content-Length" was set in the headers, or
// chunked mode if "Transfer-Encoding" was set in the headers
if ((Phase == Phases.RequestResponse) ||
(Phase == Phases.Headers) ||
(Phase == Phases.BodyChunkedLength) ||
(Phase == Phases.BodyChunkSeparator))
{
if (IsDebugEnabled)
{
Log.Debug("Line reading phase");
}
// save the starting position so we can restore if we don't have
// enough bytes
long startingPosition = br.BaseStream.Position;
// read the next line from the binary reader
var readNextLine
= BinaryReaderHelper.ReadNextLineFromBinaryReader(br, out line);
if (IsDebugEnabled)
{
Log.Debug("readNextLine {0}, line of '{1}'",
readNextLine, line);
}
// NOTE: Because we ensure that we have a string that was properly terminated by
// crlf we can consider 'Needs`MoreData' cases inside of this if() to be
// errors
if (readNextLine == BinaryReaderHelper.ReadNextLineResponses.StringTerminatedByCrLf)
{
if (Phase == Phases.RequestResponse)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.RequestResponse");
}
processStatus = ProcessRequestResponseFirstLineHandler(line);
if (processStatus == ProcessStatus.Error)
{
Log.Debug("ProcessStatus.Error() from ProcessRequestResponseFirstLineHandler()");
// rewind to the starting position
br.BaseStream.Position = startingPosition;
return(ProcessStatus.Error);
}
else if (processStatus == ProcessStatus.Complete)
{
Log.Debug("status == ProcessStatus.Compete, moving to Phases.Headers");
// done with the request/response first line handler
// move to the next phase
phase = Phases.Headers;
}
else
{
// make sure to catch any unexpected status return values
throw new System.InvalidOperationException("Unexpected processStatus of " + processStatus + " returned by ProcessRequestResponseFirstLineHandler()");
}
}
else if (Phase == Phases.Headers)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.Headers");
}
processStatus = ProcessHeaders(line);
if (processStatus == ProcessStatus.Error)
{
Log.Debug("ProcessStatus.Error from ProcessHeaders(), moving back to startingPosition and returning ProcessStatus.Error");
// rewind to the starting position
br.BaseStream.Position = startingPosition;
return(ProcessStatus.Error);
}
else if (processStatus == ProcessStatus.Complete)
{
if (IsDebugEnabled)
{
Log.Debug("Done with headers");
}
// done with headers
// if we have a content length then move to Phases.Body
// otherwise we are done with the request
if (ContentLength != -1)
{
if (IsDebugEnabled)
{
Log.Debug("ContentLength is {0}, moving to Body phase",
ContentLength);
}
phase = Phases.Body;
}
else if (TransferEncoding == "chunked")
{
if (IsDebugEnabled)
{
Log.Debug("TransferEncoding chunked, moving to Phases.BodyChunkedLength");
}
phase = Phases.BodyChunkedLength;
}
else
{
// we are all done, no data follows the headers
if (IsDebugEnabled)
{
Log.Debug("returning ProcessStatus.Complete");
}
return(ProcessStatus.Complete);
}
}
else if (processStatus == ProcessStatus.Continue)
{
if (IsDebugEnabled)
{
Log.Debug("ProcessHeaders() returned 'Continue'");
}
}
else
{
// make sure to catch any unexpected status return values
throw new System.InvalidOperationException("Unexpected processStatus of " + processStatus + " returned by ProcessHeaders()");
}
}
else if (Phase == Phases.BodyChunkedLength)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.BodyChunkedLength");
}
processStatus = PhaseBodyChunkLength(line);
if (processStatus != ProcessStatus.Continue)
{
return(processStatus);
}
}
else if (Phase == Phases.BodyChunkSeparator)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.BodyChunkSeparator");
}
// we expect the line to be empty
if (line != String.Empty)
{
Log.Error("Expected a line that was String.Empty in the BodyChunkSeparator state but instead got '"
+ line + "'");
return(ProcessStatus.Error);
}
// if the ChunkLength is 0 then we are all done with the chunked data
if (ChunkLength == 0)
{
Log.Debug("Found ChunkLength of zero, decoding content and returning ProcessStatus.Complete");
// we have the entire body, decode the content
DecodeContent();
return(ProcessStatus.Complete);
}
else // we have more chunks pending
{
// go back to the BodyChunkedLength phase
if (IsDebugEnabled)
{
Log.Debug("Going back to Phases.BodyChunkedLength");
}
phase = Phases.BodyChunkedLength;
}
}
}
else if (readNextLine == BinaryReaderHelper.ReadNextLineResponses.NonAsciiCharacterFound)
{
if (IsDebugEnabled)
{
Log.Debug("found a non-ascii character, this appears to be a binary stream, returning an error code");
}
return(ProcessStatus.Error);
}
else if ((readNextLine == BinaryReaderHelper.ReadNextLineResponses.StringAtEndOfStream) ||
(readNextLine == BinaryReaderHelper.ReadNextLineResponses.NeedMoreBytes))
{
if (IsDebugEnabled)
{
Log.Debug("restoring the starting position and returning ProcessStatus.NeedMoreData",
readNextLine);
}
// restore the starting position
br.BaseStream.Position = startingPosition;
// if we don't have enough data or if we have data but no crlf
// then report this
return(ProcessStatus.NeedMoreData);
}
else
{
// Treat errors more seriously in DEBUG mode
#if DEBUG
throw new System.InvalidOperationException("unknown readNextLine value of " + readNextLine + ", returning an error");
#else
Log.Error("unknown readNextLine value of " + readNextLine + ", returning an error");
return(ProcessStatus.Error);
#endif
}
}
else if (Phase == Phases.Body)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.Body");
}
processStatus = PhaseBody(br);
if (processStatus != ProcessStatus.Continue)
{
return(processStatus);
}
}
else if (Phase == Phases.BodyChunkData)
{
if (IsDebugEnabled)
{
Log.Debug("Phase == Phases.BodyChunkData");
}
processStatus = PhaseBodyChunkData(br);
if (processStatus != ProcessStatus.Continue)
{
return(processStatus);
}
}
else
{
throw new System.InvalidCastException("Unknown phase of " + Phase);
}
} // while(true)
}
public ResponseStatus ReadStatus()
{
var status = ResponseStatus.Unknown;
var buffer = m_statusBuffer;
BinaryReaderHelper.ReadTo(m_reader, buffer, 0, 5);
var remains = 0;
var code = buffer[3] | (buffer[4] << 8);
switch (code)
{
case End:
status = ResponseStatus.NoError;
break;
case Value:
status = ResponseStatus.Value;
remains = 1;
break;
case Stored:
status = ResponseStatus.NoError;
remains = 3;
break;
case Deleted:
status = ResponseStatus.NoError;
remains = 4;
break;
case NotFound:
status = ResponseStatus.KeyNotFound;
remains = 6;
break;
case Exists:
status = ResponseStatus.KeyExists;
remains = 3;
break;
case NotStored:
status = ResponseStatus.ItemNotStored;
remains = 7;
break;
case ServerError:
case ClientError:
Read(8);
throw new InvalidOperationException(ReadError());
case Error:
Read(2);
throw new InvalidOperationException();
default:
throw new NotImplementedException();
}
if (remains > 0)
{
BinaryReaderHelper.ReadTo(m_reader, buffer, 0, remains);
}
return(status);
}
private void Read(int count)
{
BinaryReaderHelper.ReadTo(m_reader, m_buffer.Array, 0, count);
}