[Query] Identify client using id

[Query] Identify client using id

currently, ip address of the client is only used to distinguish client which will receive buffers.
In this case, server cannot distinguish if more than one client with the sampe ip is connected.
So instead of ip address, changed it to use the client's unique id.

Signed-off-by: gichan <gichan2.jang@samsung.com>
Signed-off-by: Gichan Jang <gichan2.jang@samsung.com>