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FreeOpcUa / python-opcua

LGPL Pure Python OPC-UA Client and Server
http://freeopcua.github.io/
GNU Lesser General Public License v3.0
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BadSecurityChecksFailed #460

Open carlosgs91 opened 7 years ago

carlosgs91 commented 7 years ago

Hi,

I am trying to connect to a demo server from KEPServerEX. I can do so with OpenOPC by using

opc = OpenOPC.open_client('localhost')
opc.connect('Kepware.KEPServerEX.V6')

To do the same in FreeOPCUa I have tried using:

client = Client("opc.tpc://127.0.0.1:49320")
client.connect()

And also:

client = Client("opc.tpc://127.0.0.1:49320/Kepware.KEPServerEX.V6")
client.connect()

But I get the following error:

image

I am not sure if it's related but I don't have cryptography installed.

Any idea what's the issue?

oroulet commented 7 years ago

You were denied access. You need to find out what your server want. Maybe it wants encryption...

On Fri, Jun 23, 2017, 10:49 carlosgs91 notifications@github.com wrote:

Hi,

I am trying to connect to a demo server from KEPServerEX. I can do so with OpenOPC by using

opc = OpenOPC.open_client('localhost') opc.connect('Kepware.KEPServerEX.V6')

To do the same in FreeOPCUa I have tried using:

client = Client("opc.tpc://127.0.0.1:49320") client.connect()

And also:

client = Client("opc.tpc://127.0.0.1:49320/Kepware.KEPServerEX.V6") client.connect()

But I get the following error:

[image: image] https://user-images.githubusercontent.com/28705943/27474126-a4b4d250-5801-11e7-8e8c-dfc2172f0986.png

I am not sure if it's related but I don't have cryptography installed.

Any idea what's the issue?

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AndrewStuhr commented 4 years ago

I'm also receiving BadSecurityChecksFailed while trying to connect to Kepware. I do have cryptography installed. Kepware is on the same PC that is running FreeOpcUa. Kepware does not require any user credentials on this PC. Any thoughts/tips for fixing the issue? Thanks!

AndrewStuhr commented 4 years ago

Ok I figured it out. Kepware requires an encryption certificate by default, and I wasn't providing one. Eventually I may use a certificate, but for the time being, I disabled Kepware security by opening OPC UA Configuration > click on server endpoint > select "None" for security policy