Requester

peripheral.find("modem", rednet.open)

write("Finding database server ID...")
rednet.broadcast("database", "dns-lookup")
_, body = rednet.receive("dns-record-database")
serverId = tonumber(body)
print(" Done!")

while true do
    local input = read()
    rednet.send(serverId, input, "database-file-request")
    _, body = rednet.receive("database-file-response")
    print(body)
end