private PDUBase SendReceivePDU(PDUBase send_pdu)
{
try
{
CallId++;
PDUHeader pdu_header = new PDUHeader()
{
MajorVersion = PDUHeader.RPC_VERSION_MAJOR,
MinorVersion = PDUHeader.RPC_VERSION_MINOR,
DataRep = _data_rep,
CallId = CallId,
Type = send_pdu.PDUType
};
List <byte[]> fragments = send_pdu.DoFragment(_max_send_fragment - PDUHeader.PDU_HEADER_SIZE);
for (int i = 0; i < fragments.Count; ++i)
{
pdu_header.Flags = send_pdu.GetFlags();
if (i == 0)
{
pdu_header.Flags |= PDUFlags.FirstFrag;
}
if (i == fragments.Count - 1)
{
pdu_header.Flags |= PDUFlags.LastFrag;
}
pdu_header.FragmentLength = (ushort)(fragments[i].Length + PDUHeader.PDU_HEADER_SIZE);
MemoryStream send_stm = new MemoryStream();
BinaryWriter writer = new BinaryWriter(send_stm);
pdu_header.Write(writer);
writer.Write(fragments[i]);
byte[] fragment = send_stm.ToArray();
string name = fragments.Count == 1 ? "RPC Named Pipe Send Buffer" : $"RPC Named Pipe Send Buffer - Fragment {i}";
RpcUtils.DumpBuffer(true, name, fragment);
if (_pipe.Write(fragment) != fragment.Length)
{
throw new RpcTransportException("Failed to write out PDU buffer.");
}
}
MemoryStream recv_stm = new MemoryStream();
PDUHeader curr_header = new PDUHeader();
int frag_count = 0;
while ((curr_header.Flags & PDUFlags.LastFrag) == 0)
{
var pdu = ReadPDU(frag_count++);
curr_header = pdu.Item1;
if (curr_header.CallId != CallId)
{
throw new RpcTransportException("Mismatching call ID.");
}
recv_stm.Write(pdu.Item2, 0, pdu.Item2.Length);
}
return(CheckFault(curr_header.ToPDU(recv_stm.ToArray())));
}
catch (EndOfStreamException)
{
throw new RpcTransportException("End of stream.");
}
}
/// <summary>
/// Write the fragment to the transport.
/// </summary>
/// <param name="fragment">The fragment to write.</param>
/// <returns>True if successfully wrote the fragment.</returns>
protected override bool WriteFragment(byte[] fragment)
{
return(_pipe.Write(fragment) == fragment.Length);
}
