Note: This keeps the old methods to be backward compatible.
Note: Unforntunatly a lot of whitespace fixes, refactoring and other trivial stuff is
included. It was to hard to split of in a seperate commit.
Note: Async methods does not use exactly the same structure/signature as the
existing methods. "Out" parameters like ReadClass and ReadStruct instead
returns the struct in tuple. Async methods also rely on exceptions
instead of ErrorCodes to communicate exception states to calling client.
* Use TcpClient and use Async methods (ReadAsync/WriteAsync)
* Implemnt async methods for all existing methods
* Implemnt existing methods using tcpclient.
* Split Plc.cs in more files. (Common, Async, Sync, Helpers)
* Mark old methods as Obsolete
* Split tests in two files
* Implement Async tests
There was an Error when you had Structs conaining less than 8 Bits. The size calculation in this case returned 0 and the Plc.ReadClass() method throwed an excpetion. Structs in Step7 within da DataBlock always starts with adresses that can by devided by two. The extended code ensures the correct size even if there are a couple of structs in a DataBlock containing only a few bits.
Read responses from the PLS using classes for TPKT and COPT. This
makes the communication more robust. It will now handle empty COTP
packets that SoftPLS and WinAC based PLCs send out. I use RFC names for
functions and classes.
Change logic to use COTP and S7Comm reponse codes instead of
relying on packet sizes.
Read Max PDU size from connection setup. Ref #21
Change logic to use MaxPDUSize when reading istead of hardcoded limit.
I tried using MaxPDUSize when writing data but this failed when packet size is
over 256 on snap7. So i decided to drop changes to write size.
I have done some tests against WinAC cpu and it seems to handle bigger pdu's
when writing if negotiated in the connection setup. This might just be a SNAP7 bug.
Fix MaxPDUSize for readbytes
Remove debug line
Simplify byte copy. Remove unessesarry buffer
Read responses from the PLS using classes for TPKT and COPT. This
makes the communication more robust. It will now handle empty COTP
packets that SoftPLS and WinAC based PLCs send out. I use RFC names for
functions and classes.
Change logic to use COTP and S7Comm reponse codes instead of
relying on packet sizes.
Read Max PDU size from connection setup. Ref #21
Change logic to use MaxPDU from cpu limit instead of hardcoded limit.
Remove var count limit.
