On Wed, Feb 11, 2015 at 06:41:19PM +0800, Chen Hanxiao wrote:
 +  if (nlines < 1)
 +    return NULL; 
This error handling is wrong.  It would cause the protocol between the
appliance and library to become desynchronized.  You have to call one
of the error functions -- eg. `reply_with_error' before returning
NULL.
The rest of this patch looks fine, if this change was made.
Rich.
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