Problem with GSITCP connection hanging

[Thomas D. Uram]

Hi Bill:

We have a problem with GSITCP connections hanging between clients and 
servers in the Access Grid project, and are curious if you've seen the 
same problem. 

The problem is that, while the connection appears to be working 
properly, with the server trying to write and the client trying to read, 
the send never finishes.  We've confirmed this state in gdb.  The only 
peculiar detail about the connection is that we're using asynch read and 
synchronous write, but globus uses the asynch write in the synchronous 
write anyway, so I don't think that's a problem.

Ivan mentioned that you had been doing longer-term connections (20 
hours+) with gridftp.  Have you encountered similar problems?  If you 
haven't, can you describe the relevant details of the gridftp 
connections so we can possibly workaround the problem we're having?

Thanks,

Tom

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