Comments on Tomek on Software: Pub/sub sample with WCF net.tcp protocol in Silver...

Happy to see your blog as it is just what I’ve loo...

2011-12-27T23:54:23.432-08:00

Happy to see your blog as it is just what I’ve looking for and excited to read all the posts. I am looking forward to another great article from you

I was browsing this on google and really happy to ...

2011-12-26T23:13:44.176-08:00

I was browsing this on google and really happy to find this blog post of yours. It solved my problem. Bookmarked the page for later reference.

I think we can see more sports updates through thi...

2011-10-13T02:37:20.837-07:00

I think we can see more sports updates through this website more often because the bandwith of this website is very good and easy accessable at the same time as well.

Tomasz, can you look at my question regarding clie...

2011-03-13T03:28:08.326-07:00

Tomasz, can you look at my question regarding client.csv with net.tcp and my duplex service here http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010general/thread/7d3fc412-9dc4-4881-9c11-e7020f0a4320,
I am sure you have the answer...thanks in advance

hello! I have been reading your blogs and they are...

2011-02-02T20:28:08.909-08:00

hello! I have been reading your blogs and they are very good. thank you for all the wonderful examples. What do I need to run this example? I have tried to run it and it gave me this error:

Could not connect to net.tcp://localhost:4502/pubsub/PubSubService.svc

I am trying to implement a continous service polling using Silverlight 4 with WCF and thought this example could add on to what I missing in my application. I apprecaite your help at your earliest convenience.

I wanted to thank you for this great read!! I defi...

2010-11-17T18:05:28.210-08:00

I wanted to thank you for this great read!! I definitely enjoying every little bit of it and I have you bookmarked to check out new stuff you post.

Hi after implementing the code i get the error : T...

2010-10-05T10:53:13.886-07:00

Hi after implementing the code i get the error :
The communication object, System.ServiceModel.Channels.ClientFramingDuplexSessionChannel, cannot be used for communication because it has been Aborted.

if i open two different browsers and subscribe to same topic.

Hi Tomasz, Very good article! Both Clients works...

2010-06-26T06:54:41.094-07:00

Hi Tomasz,

Very good article!

Both Clients works using net.tcp but fails if I choose HTTP polling duplex. I get "ArgumentException - The provided URI scheme 'file' is invalid; expected 'http'.
Parameter name: via". What am I doing wrong?

Thanks

Simon, the Silverlight Socket TCP Policy template ...

2010-05-26T20:06:33.205-07:00

Simon, the Silverlight Socket TCP Policy template has been removed from the online template gallery with the release of Silverlight 4 RTM - it is no longer necessary to connect to WCF net.tcp services. Instead, please expose socket policy over HTTP.

The template doesn't exist anymore. The link t...

2010-05-26T18:16:50.047-07:00

The template doesn't exist anymore. The link to the template gallery doesn't work either. What's happened to the template?

Anonymous, I have updated the "Allow Silverli...

2010-05-08T11:30:02.610-07:00

Anonymous, I have updated the "Allow Silverlight applications to communicate over TCP" section of the post with information relevant to Silverlight 4 RTW. Mit freundlichen Gruessen, Tomek

I cannot get your code running on VS2010 RTM. I ha...

2010-05-08T09:00:09.955-07:00

I cannot get your code running on VS2010 RTM. I have published the PubSubService via VS2010/Publish... - after pressing F5, I can see the client application. Pressing the button "Subscribe" here runs into the following error:

Could not connect to net.tcp://localhost:4502/pubsub/PubSubService.svc. The connection attempt lasted for a time span of 00:00:00.2850163. TCP error code 10013: Der Zugriff auf einen Socket war aufgrund der Zugriffsrechte des Sockets unzulässig.. This could be due to attempting to access a service in a cross-domain way while the service is not configured for cross-domain access. You may need to contact the owner of the service to expose a sockets cross-domain policy over HTTP and host the service in the allowed sockets port range 4502-4534.

The German "Der Zugriff auf einen Socket war aufgrund der Zugriffsrechte des Sockets unzulässig.." means "Accessing a socket was not possible due to invalid access rights".

It would be great, if you could update your article with instructions about how to get it up and running with the RTM release of VS2010.

i tried to redo another project like your project....

2010-05-06T07:25:28.149-07:00

i tried to redo another project like your project.

But when i want add the service web in the silverlight application, I have an error :
contract requires Duples, but binding "WebHttpBinding" doesn't support it etc ..
I don't understand , i put the same config in web.config.

Anonymous, as of Silverlight 4 RC (and of course ...

2010-04-18T20:15:20.280-07:00

Anonymous,
as of Silverlight 4 RC (and of course Silverlight 4 RTM), the socket policy for WCF clients using the net.tcp protocol is obtained over HTTP as opposed to TCP port 943 - see one of my recent comments above. Prior to Silverlight 4 RC, hosting of the socket policy over TCP port 943 required a self-hosted executable because TCP activation in IIS only works with the WCF net.tcp protocol. WCF net.tcp in turn uses .NET Framing protocol to frame discrete messages, while the protocol used to obtain socket policy over port 943 did not use any framing at all.

Hi Tomasz- Why on earth do we need a console app ...

2010-04-17T15:49:54.050-07:00

Hi Tomasz-

Why on earth do we need a console app to host the Port 943 Silverlight policy server?

Surely there is a way to use Tcp Activation to host the Silverlight Policy Server under IIS so that it activates automatically when a request comes in. That would be a really fantastic sample app for you to post.

thanks,
-Don

That would be a great demo to post.

Anonymous, unfortunately one cannot host net.tcp W...

2010-03-30T09:12:34.442-07:00

Anonymous, unfortunately one cannot host net.tcp WCF services in Cassini (the development web browser built into Visual Studio 10) - this is something that will be addressed in future releases. At the moment you should be able to host the pub\sub sample in Cassini after commenting out the net.tcp endpoint from the WCF service.

is there a way to test this application on the vis...

2010-03-30T03:56:11.748-07:00

is there a way to test this application on the visual studio 2010 directly without using iis i tried but it's not working, i got this exception:
Could not connect to net.tcp://localhost:4502/pubsub/PubSubService.svc. The connection attempt lasted for a time span of 00:00:02.0331163.....

*the plolicy service is running..
*using Silverlight 4 beta version

Thanks

Peter, the WCF net.tcp protocol overrides the Sock...

2010-03-22T18:42:47.287-07:00

Peter, the WCF net.tcp protocol overrides the Socket's default policy protocol from TCP:943 to HTTP, so you don't have to explicitly configure this behavior. Socket's default client access policy protocol has to be TCP:943 because switching it to HTTP in Silverlight 4 would be a breaking change for Silverlight 3 applications. Given that WCF net.tcp protocol ships in Silverlight 4 for the first time, we took the freedom to pick a default which is more usable for people deploying policy files.

But how can I tell the WCF client proxy to use the...

2010-03-22T18:35:58.735-07:00

But how can I tell the WCF client proxy to use the HTTP protocol (root of the domain)?

Per default SL4RC tries to use the socket policy server on 943

from
http://msdn.microsoft.com/en-us/library/system.net.sockets.socketasynceventargs.socketclientaccesspolicyprotocol%28VS.96%29.aspx

Hi Tomasz, It would be great if you update your p...

2010-03-19T06:13:10.145-07:00

Hi Tomasz,

It would be great if you update your post. Thanks in advance.

Hi Tomasz Could you detail what we have to change ...

2010-03-18T18:48:34.048-07:00

Hi Tomasz
Could you detail what we have to change in order to have the sample app working?

Peter, the net.tcp protocol in Silverlight 4 RC ex...

2010-03-18T10:05:40.211-07:00

Peter, the net.tcp protocol in Silverlight 4 RC expects the socket policy to be available over the HTTP protocol at the root of the domain as opposed to over TCP at port 943 as before. This means one no longer needs to host a custom TCP server to serve the socket policy file but instead can expose the policy file for TCP using the regular HTTP web server mechanisms.

We upgraded to Silverlight 4 RC and cannot connect...

2010-03-16T21:02:52.789-07:00

We upgraded to Silverlight 4 RC and cannot connect anymore via sockets (net.tcp).
Only OOB with sockets work.

There is a missing piece in the security policies. But we cannot figure out what...

It seems that MS changed the security settings regarding TCP sockets slightly...
http://msdn.microsoft.com/en-us/library/cc645032%28VS.96%29.aspx

Do you know what is missing? Changed?

-------------------------------------
Problem Details
Could not connect to net.tcp://localhost:4502/PubSubService/PubSubService.svc. The connection attempt lasted for a time span of 00:00:00.0780078. TCP error code 10013: An attempt was made to access a socket in a way forbidden by its access permissions..
This could be due to attempting to access a service in a cross-domain way while the service is not configured for cross-domain access. You may need to contact the owner of the service to expose a sockets cross-domain policy over HTTP and host the service in the allowed sockets port range 4502-4534.

System.Net.Sockets.SocketException: An attempt was made to access a socket in a way forbidden by its access permissions.
--- End of inner exception stack trace ---
at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
at System.ServiceModel.ClientBase`1.ChannelBase`1.EndInvoke(String methodName, Object[] args, IAsyncResult result)
at Microsoft.Samples.Silverlight.PollingDuplex.Client.Proxy.PubSubClient.PubSubClientChannel.EndSubscribe(IAsyncResult result)
at Microsoft.Samples.Silverlight.PollingDuplex.Client.Proxy.PubSubClient.Microsoft.Samples.Silverlight.PollingDuplex.Client.Proxy.IPubSub.EndSubscribe(IAsyncResult result)
at Microsoft.Samples.Silverlight.PollingDuplex.Client.Proxy.PubSubClient.OnEndSubscribe(IAsyncResult result)
at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)

Thanks very much

2010-01-29T02:18:06.576-08:00

Thanks very much

Anonymous, make sure the System.ServiceModel.Polli...

2010-01-28T17:50:18.522-08:00

Anonymous, make sure the System.ServiceModel.PollingDuplex.dll has been deployed to the bin directory of your web application. Lack of it or an incorrect version will cause the exception message you are seeing.