cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 

.NET SDK - Application stuck at client.start()

Highlighted
Level 1

.NET SDK - Application stuck at client.start()

I followed the tutorial available in the 5.6.0.549 SDK download but cannot get the application past client.start().  I was able to get the C SDK running.  Any ideas on how I can figure out why the client.start() function is halting?

Application parameters.

Tags (2)
9 REPLIES 9

Re: .NET SDK - Application stuck at client.start()

I have seen reports that the .NET SDK will only run in an HTTPS/WSS environment

Re: .NET SDK - Application stuck at client.start()

Really? WTF

Re: .NET SDK - Application stuck at client.start()

.NET SDK will only run in HTTPS

Re: .NET SDK - Application stuck at client.start()

It is not true,

Add  ConnectedThingClient.disableEncryption();

after  SteamSensorClient client = new SteamSensorClient(config);

in SteamSensorClient class

so it can run in HTTP/WS

Re: .NET SDK - Application stuck at client.start()

ling zhou wrote:

It is not true,

Add  ConnectedThingClient.disableEncryption();

after  SteamSensorClient client = new SteamSensorClient(config);

in SteamSensorClient class

so it can run in HTTP/WS

I am having a similar problem as Todd.

The ThingWorx 6.6 C# SDK seems to be missing a bunch of methods that are required to connect to a secure ThingWorx server.

Everything compiles and runs (I have properly included all included references)

I tried following the help located at  Digital Media Publisher


SDK Steam Sensor Example Help​

//Allow self-signed certificates
config.AllowSelfSignedCertificates = true;

//Disable certificate validation when using self-signed certificates
config.DisableCertValidation = true;


C# Emits the following Error

'ClientConfigurator' does not contain a definition for 'AllowSelfSignedCertificates' and no extension method 'AllowSelfSignedCertificates' accepting a first argument of type 'ClientConfigurator' could be found (are you missing a using directive or an assembly reference?)


'ClientConfigurator' does not contain a definition for 'DisableCertValidation' and no extension method 'DisableCertValidation' accepting a first argument of type 'ClientConfigurator' could be found (are you missing a using directive or an assembly reference?)

It appears that the API is broken now, or that there is no alternative documentation to explain what we are supposed to do now

Re: .NET SDK - Application stuck at client.start()

Hi Team,

I am also not able to connect to thingworx server using  dot net sdk with version 6.6 twApi.dll. I am not getting any error. but it is stuck with client.start() line.

Note: With the same SDK i am able to connect to secured(https) server but not normal(http) one.

Let me know if any body faced this issue and found a solution.

Re: .NET SDK - Application stuck at client.start()

That's funny I am having the opposite problem.

Using port 80 I can connect over http, but trying to connect on port 443 using wss, I cannot.

Here is how I connected with http:

URI = "ws://Blabla.thingworx.com:80/Thingworx/WS";


ConnectedThingClient.disableEncryption(); needs to be called

//Allow self-signed certificates

config.AllowSelfSignedCertificates = true;

//Disable certificate validation when using self-signed certificates

config.DisableCertValidation = true;

Now trying with https I have removed those 3 calls/property sets and changed my URI to

URI = "wss://Blabla.thingworx.com:443/Thingworx/WS";

And I get stuck in a connecting loop on Start.

I'm not familiar with logging and the SDK example/explanation is confusing and not helpful enough.

Re: .NET SDK - Application stuck at client.start()

They changed the location of where you call disableEncryption() when they rebuilt the C# SDK with the C SDK. The correct way to do this, now, is in the initialization method:

public CoffeeRoasterClient(ClientConfigurator config)

            : base(config)

        {

            CoffeeRoasterClient.disableEncryption();

        }

Re: .NET SDK - Application stuck at client.start()

The problem is that you need to get the public certificate from the server and load it into the ClientConfigurator class.  Direct the filepath to the cert.  I had to ask TW how to get the cert, basically when you are logged into the platform you can click the secure Lock from the browser and get details on the cert / export it etc.  There are probably help topics on the web about extracting those, I used a plain text .pem format.

//Set the .pem cert info

            config.ServerCertFileInfo = new CertFileInfo();

            config.ServerCertFileInfo.FilePath = args[2];

            config.AllowSelfSignedCertificates = false;

            config.DisableCertValidation = false;