From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-users] Issues with multiple (concurrent) rfcomm connections From: Marcel Holtmann To: BlueZ Mailing List In-Reply-To: References: Content-Type: text/plain Message-Id: <1105305890.8637.5.camel@pegasus> Mime-Version: 1.0 Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net Reply-To: bluez-users@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ users List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 09 Jan 2005 22:24:50 +0100 Hi George, > I just ran across an issue with setting up multiple rfcomm connections from a > linux laptop with kernel 2.4.28-mh1 using an Anycom USB-120 dongle with Silicon > Wave chipset. > > I just tried to maintain 2 connections to 2 seperate commercial rs232 adapters > (roalan wcs 232) using the socket API (test source attached). While connection > setup is ok, and reconnects (e.g. after powerfail of peers) work too for a > single device, running the same procedure in parallel leads to a behavor where > no more sockets can be opened. It starts with a write failed to the socket (ok > so far), but the following connection attempts lead to errors 16 (resource or > device busy) and 11 (resource temp. unavailable) or 110 (timeout). From this > state, the system does not recover and all bluez modules have to be reloaded ;-( > > as an alternative I tried the same thing using seperate processes instead of > threads or, using the rfcomm utility and cat for sending data. I always end up > with the same errors. > > I wonder whether this problem is known, or related to Silicon Wave. Could > anyone try this with a CSR based system? try to reproduce it with a 2.6.10-mh1 kernel. Regards Marcel ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users