[Rxtx] read() not blocking?

[Knute Johnson]

>On Sat, 23 Sep 2006, Knute Johnson wrote:
>
>> I'm converting from javax.comm to rxtx and have run in to a snag.  My
>> code needs to block indefinitely on a serial port read() but is
>> returning -1.  Both read timeout and read threshold are disabled.  It
>> doesn't seem to matter if I call disableReceiveTimeout() or
>> enableReceiveTimeout(0).  Behavior appears normal if timeout is set
>> to some normal value.  For now I have enabled receive timeout and set
>> the value to Integer.MAX_VALUE.
>>
>> Is this a bug or?
>>
>> My computer is running XP SP2 and RXTX is 2.1-7.
>>
>> Any ideas would be greatly appreciated.
>>
>> Thanks,
>>
>>
>
>Hi Knute
>
>I would expect that to work.  Is your serial port unusual?  Perhaps 
>multiport or a USB dongle?
>

No it is the built-in port on my Dell 380.  Nothing unusual about it. 
 I did another experiment and found that even with the 
Integer.MAX_VALUE timeout, about every minute and 20 seconds the 
read() returned a -1.  There is something funny here.

Anything you want me to try?

Thanks,

-- 
Knute Johnson
Molon Labe...