empty query messages in gnutella ?

[spatro]

I am a Purdue graduate student in computer engineering.
I have been doing an experiment in gtk-gnutella and monitoring the
query messages going in the network. I find that significant number
of query messages have a NULL payload after you do the basic string
preprocesisng such as replacing wild characters with whitespace and
removing leading and trailing whitespaces.


I have not been able to find out the cause.


Why should there be so many query messages with empty payload ?

Thanks,
Sunil