twApi_SetSelfSignedOk() equivalent in .NET SDK?

[miikkae]

I'm trying to create a test program with .NET SDK but it doesn't seem to be working.

I've got a working version ready made with C SDK but we'd need to get the actual program working on .NET SDK while there're other components requiring it.

With C SDK I had problems without twApi_SetSelfSignedOK() function call so I thought if that'd be the case here also. Only similar method I found from .NET SDK is calling ClientConfigurator.ignoreSSLErrors(true) but the code ain't working with that.

Otherwise the codes are pretty similar, both a bit modified from SteamSensor examples (property changes etc). .NET program doesn't even get to the communication logs on ThingWorx as opened WebSocket, as didn't the program with C without the twApi_SelfSignedOK() call.

Only thing that seem to matter I get by debugging the code with Visual Studio was this line in the outputs (no errors):

A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll

Not sure if this means anything related to connection problems but it's a guess.

While running the code, ConnectedThingClient.start() works without throwing any Exceptions but it's not connected. Tried seperately the .connect() method but that does no difference.

[jeff11 · Accepted solution]

I believe the specific function you are looking for is AcceptSelfSignedCertificates(<Boolean>). The ThingWorx Edge/Connectivity Help Center has a very helpful document that will explain this function as well as the other configuration parameters that are available to the .NET SDK ClientConfigurator Class:

http://support.ptc.com/cs/help/thingworx_hc/thingworx_edge/index.jspx?id=dotnetsdk_topics-c_dotnet_sdk_reference_clientc…

[miikkae]

Hi, and thanks for your reply!

I'm using Thingworx dotNet SDK 5.0.1.103 and it doesn't seem to have such function, at least in com.thingworx.communications.client.ClientConfigurator class.

There're also quite many other functions in that documentation that it doesn't seem to have.

Thank you for the link, I'll keep looking further into it.

[Aanjan]

Miikka, it looks like you are using an older version of the dotNet SDK. Our current released version is 5.5. Please do download the new one and retry.

[miikkae]

Thank for the hint!

I downloaded the 5.5 SDK from marketplace but now I can't seem to add neither x86 nor x64 version of twApi.dll as reference to the project.

Please make sure that the file is accessible, and that it is a valid assembly or COM component.

Tried also copying the file to another location (which absolutely was accessible) and adding from there but got the same notice.

EDIT: I'm using .NET Framework 4.5 in case that matters

EDIT 2: Tried with IL dissembler and got the error:

error:
'C:\.......\twApi.dll' has no valid CLR header and cannot be disassembled

OK, I manually copied the tw directory inside bin/Debug and got it working.

Thanks for all your help for both of you!

[Aanjan]

No problem, glad you got it working

[admin11]

I also used .NET SDK 5.5, and try to rebuild SteamSensor example. I got exact the same error --> can not add either x86 or x64 version of twApi dll as reference to the project.

I have tried to use .NET Framework 3.5 or 4.5, and the result is the same.

Can you describe in more detail regarding how to make it work in manual?

Thanks.

[Aanjan]

Falcon, on Windows, you need to copy over the 'tw' folder (which contains x86 and x64 sub folders along with the dll) to \Documents\Visual Studio 2013\Projects\Project_Name\bin\Debug