Hi,

> without and with your patch, I can run rtl_sdr -a 127.0.0.1 and connect
> gqrx to it, to listen to radio.
> So what does the patch fix for you?
> 
> Do you have something I could reproduce?

1. run "rtl_tcp -a 0.0.0.0" on OpenBSD machine
2. run Airspy's SDRsharp on Windows machine
3. connect rtl_tcp server from SDRsharp client and start receive
4. change frequency on SDRsharp with up/down button (frequency number)

same problem will occur on CubicSDR with rtl-sdr (this occur
without rtl_tcp server).


It looks librtlsdr's radio controlling api like rtlsdr_set_center_freq()
is blocked during rtlsdr_read_sync() is activated.

(maybe libusb's control transfer is blocked whle bulk transfer is running)

Regards,
-- 
SASANO Takayoshi (JG1UAA) <uaa@mx5.nisiq.net>