Websockets not available - Windows Server 2012 R2

[gar...@vidados.com]

Raven keeps telling me websockets are not available even though it's on Windows Server 2012 R2.  The message is:

Connecting to web socket using url: ws://XXXX/databases/MarketplaceVidados/websocket/validate?singleUseAuthToken=853386a9-ea91-4c2a-bb47-1ebf66964237&id=test&coolDownWithDataLoss=1000&isMultyTenantTransport=false
Server doesn't support web sockets protocol
WebSocket disconnected in unclean way

I've tried removing and re-adding the websockets protocol to IIS.

Any ideas?

[Chris Marisic]

Have you tried using web sockets in a barebones test app running under the same app pool to verify it's not actually your box?

[Gareth Thackeray]

I assume it probably is the box.. Just hoping someone might know what I'd need to do.

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[Chris Marisic]

First thing is always start with a reduction. Stand up a nearly empty ASP.NET app that you want to connect over web sockets with (perhaps SignalR for example) and see if you can get better error information or success.

[Chris Marisic]

Or just nuke the box and use a new box.

[Oren Eini (Ayende Rahien)]

Can you use a test web socket client to connect to the specified url? What do you get?

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[Gareth Thackeray]

I don't really know anything about web sockets, but I did this in the browser console:

failed: Error during WebSocket handshake: net::ERR_CONNECTION_RESET

websocket = new WebSocket("ws://xxx/databases/MarketplaceVidados/websocket/validate?singleUseAuthToken=a0a581e9-7526-4da9-9c34-ed1d8e2ef63a&id=test&coolDownWithDataLoss=1000&isMultyTenantTransport=false")

and I got

WebSocket connection to 'ws://xxx/databases/MarketplaceVidados/websocket/validate?singleUseAuthToken=a0a581e9-7526-4da9-9c34-ed1d8e2ef63a&id=test&coolDownWithDataLoss=1000&isMultyTenantTransport=false' failed: Error during WebSocket handshake: net::ERR_CONNECTION_RESET

But that's just the same auth token as the studio used - I don't know how to get another if that's important.

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[Oren Eini (Ayende Rahien)]

Do you have a proxy in the middle?

[Gareth Thackeray]

No.  It's an Azure VM fwiw but I get the same error when I try it from a browser on the VM.

[Oren Eini (Ayende Rahien)]

Hm... do you have websockets installed on that machine?

[Gareth Thackeray]

I have the component of IIS installed - I assume that's it?  Under Application Development -> Web socket protocol.  I've also tried removing it and adding it back in.

[Oren Eini (Ayende Rahien)]

Can you run RavenDB on the server as another instance, with no security, and try again (locally)?

I'm not really sure what is going on.

A web socket tester tool can probably tell us more.

[Gareth Thackeray]

Did you mean running Raven as a service?  If so I got this:

Connecting to web socket using url: ws://localhost:8080/databases/Test/websocket/validate?singleUseAuthToken=7761203c-6e20-4edc-a371-48fe810db046&id=test&coolDownWithDataLoss=1000&isMultyTenantTransport=false
Connected to WebSocket
Got message from websocket. Status Code = 403, message = {
  "Error": "Unknown single use token, maybe it was already used?"
}
Closed WebSocket connection

Do you have a testing tool in mind?

[Oren Eini (Ayende Rahien)]

Yeah, just do this without the singleUseAuthToken query string.

[Gareth Thackeray]

I got what looks like a valid WebSocket object:

{

   [functions]: ,

   __proto__: { },

   binaryType: "blob",

   bufferedAmount: 0,

   CLOSED: 3,

   CLOSING: 2,

   CONNECTING: 0,

   extensions: "",

   onclose: null,

   onerror: null,

   onmessage: null,

   onopen: null,

   OPEN: 1,

   protocol: "",

   readyState: 0,

   url: "ws://localhost:8080/databases/Test/websocket/validate?id=test&coolDownWithDataLoss=1000&isMultyTenantTransport=false"

}

[Oren Eini (Ayende Rahien)]

I'm not sure what the problem is, then. Do you have any way to trace what is happening on the server (Fiddler, for example)?

[gar...@vidados.com]

I worked it out - I was missing targettedFramework="4.5" from the httpRuntime tag in my web.config.  Thanks.