Problems with input/output connections

[fabio.santini]

Hi all,
I have a problem, list title said, within working with input and output connections at same time. I have no problems to receive a file, viewing demo with installer, and I integrated OPPServer demo in a sender demo. I also put to 6 max outgoing connections. Also reduced to 4 later.
The problem is bluetooth can become impossible to reach or impossible to resolve name. While, removing sender, it's working correctly. It seems wclProximitySender and wclOPPServer don't like to work together...

[Mike Petrichenko]

Hi,

Usualy it is impossible to use server and clients at the same time. Moreover, it is always impossible to discover and connect/accept connections at the same time.

To use Server and Client together without any issue use it on different dongles.

[fabio.santini]

In Windows is impossible handle more then one dongle with same driver, and if I remember good you told me in a service (project is a service) only Microsoft stack works correctly

[Mike Petrichenko]

Absolutly right. But it is beyond of WCL control.

[fabio.santini]

Am I wrong if I remember a past post (not finding at the moment...) where I read it was possible only leaving one channel free for incoming connections?

Is limit of sending/receive a problem related to use of single dongle? Or can I "jump" this problem developing 2 application using the same dongle?

[Mike Petrichenko]

If you use just ObjectPush without discovring/pairing. Discovering (and connect) operatios are exlusive. And driver may work wrong. As I told it is beyond WCL control as it is internal drivers implementation and Bluetooth specification (RF and HCI) limitations.

You can not use the same dongle from 2 applications because of the same reason I described above.

If you need client and server on the same dongle be ready that it may work not so good.

[fabio.santini]

I'm viewing your demo about OPP, and each time I need to discover. Have I chances to connect to OPP server at the end of discovery if I save MAC list of devices? If I push object into MAC can I receive data from other devices?

[Mike Petrichenko]

It depends on your implementation. However, how your remote client will know that discovering it done and it is time to connect to server?

[fabio.santini]

I think it's simply impossible. Only way to try to make this works it's retry to send to server while it's free. Cause, really, I don't know how to solve this.
Plus, I need a loop of sending (like ProximitySenderDemo) while OPPThread discover and send only once

[Mike Petrichenko]

Only one way is good: use 2 dongles with different drivers. One for sending, other one for receiving.