internal void ReadOptional(PduReader reader)
{
while (reader.SizeLeft > 0)
{
Optional.Add(new SMPPTLV(reader));
}
}
private async Task <SMPPMessage> _recvMessage()
{
byte[] buf = new byte[16];
await _streamRead(buf, 0, buf.Length);
UInt32 commandLength = PduReader.ParseInteger(buf, 0);
if (commandLength < 16 || commandLength > (1 << 18))
{
throw new SMPPException("Invalid command_length " + commandLength + "received.");
}
if (commandLength > 16)
{
Array.Resize(ref buf, (int)commandLength);
await _streamRead(buf, 16, (int)commandLength - 16);
}
PduReader pduReader = new PduReader(buf);
#if DEBUG
Debug.WriteLine("SMPPConnection: RecvMessage size=" + pduReader.CommandLength + " id=" + pduReader.CommandId + " status=" + pduReader.CommandStatus + " seq=" + pduReader.CommandSequence);
#endif
try {
switch (pduReader.CommandId)
{
case CommandSet.GenericNack: return(new SMPPGenericNack(pduReader));
case CommandSet.BindReceiverResp: return(new SMPPBindResp(CommandSet.BindReceiverResp, pduReader));
case CommandSet.BindTransceiverResp: return(new SMPPBindResp(CommandSet.BindTransceiverResp, pduReader));
case CommandSet.BindTransmitterResp: return(new SMPPBindResp(CommandSet.BindTransmitterResp, pduReader));
case CommandSet.SubmitSmResp: return(new SMPPSubmitSmResp(pduReader));
case CommandSet.DeliverSm: return(new SMPPDeliverSm(pduReader));
case CommandSet.EnquireLink: return(new SMPPEnquireLink(pduReader));
case CommandSet.EnquireLinkResp: return(new SMPPEnquireLinkResp(pduReader));
case CommandSet.Unbind: return(new SMPPUnbind(pduReader));
case CommandSet.UnbindResp: return(new SMPPUnbindResp(pduReader));
default:
throw new SMPPException("Invalid command.");
// TODO set nack
}
}
catch (Exception err) {
throw new SMPPPDUException("Error while parsing received PDU command " + pduReader.CommandId.ToString() + ".", buf, err);
}
}
internal SMPPDeliverSm(PduReader reader) : base(reader)
{
ServiceType = reader.ReadCStringAscii();
SourceTon = (TonType)reader.ReadByte();
SourceNpi = (NpiType)reader.ReadByte();
SourceAddr = reader.ReadCStringAscii();
DestTon = (TonType)reader.ReadByte();
DestNpi = (NpiType)reader.ReadByte();
DestAddr = reader.ReadCStringAscii();
EsmClass = (EmsClass)reader.ReadByte();
ProtocolId = reader.ReadByte();
PriorityFlag = (PriorityFlags)reader.ReadByte();
ScheduleDeliveryTime = reader.ReadCStringAscii();
ValidityPeriod = reader.ReadCStringAscii();
RegisteredDelivery = (RegisteredDeliveryFlags)reader.ReadByte();
ReplaceIfPresent = reader.ReadByte();
DataCoding = (DataCodings)reader.ReadByte();
DefaultMessageId = reader.ReadByte();
ShortMessage = reader.ReadBytes(reader.ReadByte());
ReadOptional(reader);
}
internal SMPPGenericNack(PduReader reader) : base(reader)
{
}
internal SMPPMessageWithOptional(PduReader reader) : base(reader)
{
}
internal SMPPMessage(PduReader reader)
{
Status = reader.CommandStatus;
Sequence = reader.CommandSequence;
}
internal SMPPEnquireLink(PduReader reader) : base(reader)
{
}
internal SMPPUnbindResp(PduReader reader) : base(reader)
{
}
internal SMPPTLV(PduReader reader)
{
Tag = (OptionalTags)(reader.ReadInteger16());
Value = reader.ReadBytes(reader.ReadInteger16());
}
internal SMPPSubmitSmResp(PduReader reader) : base(reader)
{
MessageId = reader.ReadCStringAscii();
}
internal SMPPBindResp(CommandSet command, PduReader reader) : base(reader)
{
_command = command;
SystemId = reader.ReadCStringAscii();
ReadOptional(reader);
}
