has the following ones:
@table @code
+
+@item -proto
+@ref{Network transport} to use. Can be @emph{udp}, @emph{tcp} or @emph{all}.
+
@item -bind
Address (@code{host:port} format) we must bind to.
+
@item -peers
Path to the directory containing peers information, database.
+
+@item -proxy
+Start trivial HTTP @ref{Proxy} server on specified @emph{host:port}.
+
@end table
Peers directory must contain subdirectories with the names of client's