// private static methods
private byte[] CombineCommandMessageSectionsIntoSingleDocument(Stream stream)
{
using (var inputStream = new BsonStreamAdapter(stream, ownsStream: false))
using (var memoryStream = new MemoryStream())
using (var outputStream = new BsonStreamAdapter(memoryStream, ownsStream: false))
{
var messageStartPosition = inputStream.Position;
var messageLength = inputStream.ReadInt32();
var messageEndPosition = messageStartPosition + messageLength;
var requestId = inputStream.ReadInt32();
var responseTo = inputStream.ReadInt32();
var opcode = inputStream.ReadInt32();
var flags = (OpMsgFlags)inputStream.ReadInt32();
if (flags.HasFlag(OpMsgFlags.ChecksumPresent))
{
messageEndPosition -= 4; // ignore checksum
}
CopyType0Section(inputStream, outputStream);
outputStream.Position -= 1;
while (inputStream.Position < messageEndPosition)
{
CopyType1Section(inputStream, outputStream);
}
outputStream.WriteByte(0);
outputStream.BackpatchSize(0);
return(memoryStream.ToArray());
}
}