[libusb] Transfer timeout

[<dus...@em...>]

Hi,

my host app (libusb on Win 10) reads some data from interrupt IN and bulk IN
endpoint from my USB device. Sometimes the app stops reading the data from 
e.g. interrupt IN endpoint, libusb_interrupt_transfer on that endpoint 
always returns -7 (timeout) with zero data transfered. The USB device has 
some data prepared to be transfered but there is no incoming request from 
the host (no usb interrupt routine is called at the device side for libusb_
interrupt_transfer call).




At the same time transfers from the host to the device's interrupt OUT 
endpoint work (usb interrupt routine at the device side is called and data 
are received by the device).




I also noticed that in this state, my device is not detected by Device 
Monitoring Studio (usb analyzer software). It is visible in Windows Device 
Manager.




I have to unplug and plug my USB device to my PC to make it working.




Can you please recommend how to troubleshoot this issue?







Thanks




Martin