Header(LogFileReader reader)
{
Id = reader.ReadInt32 ();
if (Id != LogHeaderId)
throw new InvalidOperationException ("Id doesn't match.");
Major = reader.ReadByte ();
Minor = reader.ReadByte ();
Format = reader.ReadByte ();
PtrSize = reader.ReadByte ();
StartupTime = reader.ReadInt64 ();
TimerOverhead = reader.ReadInt32 ();
Flags = reader.ReadInt32 ();
Pid = reader.ReadInt32 ();
Port = reader.ReadUInt16 ();
SysId = reader.ReadUInt16 ();
}