diff --git a/discovery/discovery.go b/discovery/discovery.go
new file mode 100644
index 0000000..7d44db0
--- /dev/null
+++ b/discovery/discovery.go
@@ -0,0 +1,125 @@
+package discovery
+
+import (
+	"fmt"
+	"sync"
+
+	"git.loafle.net/commons_go/logging"
+	"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+)
+
+var discoverer *discovery
+
+func DiscoveryInit() {
+	discoverer = &discovery{}
+	discoverer.start()
+}
+
+func DiscoveryDestroy() {
+	discoverer.stop()
+	discoverer = nil
+}
+
+func DiscoverZone(dz *model.DiscoveryZone) {
+	discoverer.discoverZone(dz)
+}
+
+func DiscoverHost(dh *model.DiscoveryHost) {
+	discoverer.discoverHost(dh)
+}
+
+func DiscoverPort(dp *model.DiscoveryPort) {
+	discoverer.discoverPort(dp)
+}
+
+func DiscoverService(ds *model.DiscoveryService) {
+	discoverer.discoverService(ds)
+}
+
+func Stop() {
+
+}
+
+type discovery struct {
+	sendChan chan interface{}
+	errChan  chan error
+
+	stopChan chan struct{}
+	stopWg   sync.WaitGroup
+}
+
+func (d *discovery) start() {
+	if d.stopChan != nil {
+		panic("Discovery: discovery is already running. Stop it before starting it again")
+	}
+
+	d.stopChan = make(chan struct{})
+	d.sendChan = make(chan interface{})
+	d.errChan = make(chan error)
+	logging.Logger().Info(fmt.Sprintf("Discovery: discovery is started"))
+
+	d.stopWg.Add(1)
+	go handle(d)
+}
+
+func (d *discovery) stop() {
+	if d.stopChan == nil {
+		panic("Discovery: discovery must be started before stopping it")
+	}
+	close(d.stopChan)
+	d.stopWg.Wait()
+	d.stopChan = nil
+
+	logging.Logger().Info(fmt.Sprintf("Discovery: discovery is stopped"))
+}
+
+func handle(d *discovery) {
+	defer d.stopWg.Done()
+
+	for {
+		select {
+		case <-d.stopChan:
+			return
+		case data := <-d.sendChan:
+			logging.Logger().Info(fmt.Sprintf("chan: %v", data))
+		}
+	}
+}
+
+func (d *discovery) discoverZone(dz *model.DiscoveryZone) {
+	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is start"))
+
+	doneChan := make(chan struct{})
+
+	d.stopWg.Add(1)
+	defer d.stopWg.Done()
+
+	go scanZone(d, dz, doneChan)
+
+	select {
+	case <-d.stopChan:
+		<-doneChan
+	case <-doneChan:
+		logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is complete"))
+	}
+}
+
+func (d *discovery) discoverHost(dh *model.DiscoveryHost) {
+	logging.Logger().Debug(fmt.Sprintf("DiscoverHost"))
+}
+
+func (d *discovery) discoverPort(dp *model.DiscoveryPort) {
+	logging.Logger().Debug(fmt.Sprintf("DiscoverPort"))
+}
+
+func (d *discovery) discoverService(ds *model.DiscoveryService) {
+	logging.Logger().Debug(fmt.Sprintf("DiscoverService"))
+}
+
+func (d *discovery) sendResult() {
+
+}
+
+func (d *discovery) sendError() {
+
+}
diff --git a/discovery/host.go b/discovery/host.go
new file mode 100644
index 0000000..e682b76
--- /dev/null
+++ b/discovery/host.go
@@ -0,0 +1,6 @@
+package discovery
+
+import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+
+func scanHost(d *discovery, dh *model.DiscoveryHost, doneChan chan<- struct{}) {
+}
diff --git a/net/zone.go b/discovery/zone.go
similarity index 62%
rename from net/zone.go
rename to discovery/zone.go
index dcd4935..a3e52f2 100644
--- a/net/zone.go
+++ b/discovery/zone.go
@@ -1,41 +1,14 @@
-package net
+package discovery
 
 import (
 	"net"
 	"regexp"
 	"strings"
 
-	"git.loafle.net/overflow/overflow_discovery/net/model"
+	"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
 )
 
-type ZoneScanner interface {
-	
-}
-
-type zoneScan struct {
-	config   *DiscoveryZoneConfig
-	endChan  chan bool
-	zoneChan chan *model.DiscoveryZone
-	logChan  chan error
-}
-
-func newZoneScan(dzc *DiscoveryZoneConfig) *zoneScan {
-	zs := &zoneScan{
-		config:   dzc,
-		endChan:  make(chan bool),
-		zoneChan: make(chan *model.DiscoveryZone, 4),
-		logChan:  make(chan error, 4),
-	}
-	return zs
-}
-
-func (zs *zoneScan) Close() {
-	close(zs.endChan)
-	close(zs.zoneChan)
-	close(zs.logChan)
-}
-
-func scanZone(zs *zoneScan) {
+func scanZone(d *discovery, dz *model.DiscoveryZone, doneChan chan<- struct{}) {
 	var err error
 	var ifaces []net.Interface
 	var addrs []net.Addr
@@ -50,7 +23,7 @@ func scanZone(zs *zoneScan) {
 	// }
 
 	if ifaces, err = net.Interfaces(); nil != err {
-		zs.logChan <- err
+		d.errChan <- err
 		return
 	}
 
@@ -59,34 +32,34 @@ func scanZone(zs *zoneScan) {
 	for _, i := range ifaces {
 
 		if addrs, err = i.Addrs(); nil != err {
-			zs.logChan <- err
+			d.errChan <- err
 			continue
 		}
 
 		for _, addr := range addrs {
 
 			if _, ipnet, err = net.ParseCIDR(addr.String()); nil != err {
-				zs.logChan <- err
+				d.errChan <- err
 				continue
 			}
-			if ipnet.IP.IsLoopback() || checkSameZone(zones, ipnet) || checkExclude(zs.config.ExcludePatterns, i.Name) {
+			if ipnet.IP.IsLoopback() || checkSameZone(zones, ipnet) || checkExclude(dz.ExcludePatterns, i.Name) {
 				continue
 			}
 
 			zones = append(zones, ipnet)
 
-			dz := &model.DiscoveryZone{
+			z := &model.Zone{
 				Network: ipnet.String(),
 				Iface:   i.Name,
 				Mac:     i.HardwareAddr.String(),
 				IP:      strings.Split(addr.String(), "/")[0],
 			}
 
-			zs.zoneChan <- dz
+			d.sendChan <- z
 		}
 	}
 
-	zs.endChan <- true
+	doneChan <- struct{}{}
 
 }
 
diff --git a/net/config.go b/net/config.go
deleted file mode 100644
index d333f75..0000000
--- a/net/config.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package net
-
-import (
-	"git.loafle.net/overflow/overflow_discovery/net/model"
-)
-
-type DiscoveryConfig struct {
-	ZoneConfig    *DiscoveryZoneConfig
-	HostConfig    *DiscoveryHostConfig
-	PortConfig    *DiscoveryPortConfig
-	ServiceConfig *DiscoveryServiceConfig
-}
-
-type DiscoveryZoneConfig struct {
-	ExcludePatterns []string `json:"excludePatterns"`
-}
-
-type DiscoveryHostConfig struct {
-	DiscoveryZone  model.DiscoveryZone
-	FirstScanRange int   `json:"firstScanRange"`
-	LastScanRange  int   `json:"lastScanRange"`
-	ExcludeHosts   []int `json:"excludeHosts"`
-}
-
-type DiscoveryPortConfig struct {
-}
-
-type DiscoveryServiceConfig struct {
-}
diff --git a/net/host.go b/net/host.go
deleted file mode 100644
index 9d9f1a1..0000000
--- a/net/host.go
+++ /dev/null
@@ -1 +0,0 @@
-package net
diff --git a/net/model/host.go b/net/model/host.go
deleted file mode 100644
index 09c3fa2..0000000
--- a/net/model/host.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package model
-
-import "git.loafle.net/overflow/overflow_probe/model/timestamp"
-
-type DiscoveryHost struct {
-	Zone *DiscoveryZone `json:"-"`
-	ID   int            `json:"id,omitempty"`
-	IP   string         `json:"ip"`
-	Mac  string         `json:"mac"`
-
-	Os     string `json:"os,omitempty"`
-	Target bool   `json:"target,omitempty"`
-
-	CreateDate timestamp.Timestamp `json:"createDate,omitempty"`
-	UpdateDate timestamp.Timestamp `json:"updateDate,omitempty"`
-}
diff --git a/net/model/network.go b/net/model/network.go
deleted file mode 100644
index 5cb1c85..0000000
--- a/net/model/network.go
+++ /dev/null
@@ -1,4 +0,0 @@
-package model
-
-type DiscoveryNetwork struct {
-}
diff --git a/net/model/zone.go b/net/model/zone.go
deleted file mode 100644
index 958b441..0000000
--- a/net/model/zone.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package model
-
-type DiscoveryZone struct {
-	ID             int    `json:"id,omitempty"`
-	Network        string `json:"network"`
-	IP             string `json:"ip"`
-	Iface          string `json:"iface"`
-	Mac            string `json:"mac"`
-	FirstScanRange int64  `json:"firstScanRange"`
-	LastScanRange  int64  `json:"lastScanRange"`
-}
diff --git a/net/net.go b/net/net.go
deleted file mode 100644
index 53f3d4e..0000000
--- a/net/net.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package net
-
-type Discoverer interface {
-}
-
-type discovery struct {
-}
-
-func NewDiscoverer() Discoverer {
-	d := &discovery{}
-
-	return d
-}
-
-func (d *discovery) Discover() {
-
-}
-
-func (d *discovery) DiscoverZone(dzc *DiscoveryZoneConfig) {
-	zs := newZoneScan(dzc)
-
-	defer func() {
-		zs.Close()
-	}()
-
-	go scanZone(zs)
-
-Loop:
-	for {
-		select {
-		case zone := <-zs.zoneChan:
-
-		case err := <-zs.logChan:
-
-		case <-zs.endChan:
-			break Loop
-		}
-
-	}
-
-}
-
-func (d *discovery) DiscoverHost() {
-
-}
-
-func (d *discovery) DiscoverPort() {
-
-}
-
-func (d *discovery) DiscoverService() {
-
-}
diff --git a/net/zone_test.go b/net/zone_test.go
deleted file mode 100644
index f744a8d..0000000
--- a/net/zone_test.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package net
-
-import (
-	"testing"
-)
-
-func TestScanZone(t *testing.T) {
-	dzc := &DiscoveryZoneConfig{
-		ExcludePatterns: []string{`^br-`, `^docker`},
-	}
-	zs := newZoneScan(dzc)
-
-	defer func() {
-		zs.Close()
-	}()
-
-	go scanZone(zs)
-
-Loop:
-	for {
-		select {
-		case zone := <-zs.zoneChan:
-
-			t.Logf("zone: %v", zone)
-		case err := <-zs.logChan:
-			t.Logf("log: %v", err)
-		case <-zs.endChan:
-			break Loop
-		}
-
-	}
-}
diff --git a/rpc/discovery_service.go b/rpc/discovery_service.go
index 0b26d33..ac302b4 100644
--- a/rpc/discovery_service.go
+++ b/rpc/discovery_service.go
@@ -2,6 +2,7 @@ package rpc
 
 import (
 	"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+	"git.loafle.net/overflow/overflow_discovery/discovery"
 )
 
 type DiscoveryService struct {
@@ -9,6 +10,8 @@ type DiscoveryService struct {
 
 func (ds *DiscoveryService) DiscoverZone(dz *model.DiscoveryZone) error {
 
+	discovery.DiscoverZone(dz)
+
 	return nil
 }
 
diff --git a/server/server_handlers.go b/server/server_handlers.go
index 02d9ae6..d16bbbd 100644
--- a/server/server_handlers.go
+++ b/server/server_handlers.go
@@ -6,6 +6,7 @@ import (
 	"net"
 
 	"git.loafle.net/commons_go/logging"
+	"git.loafle.net/overflow/overflow_discovery/discovery"
 
 	crs "git.loafle.net/commons_go/rpc/server"
 	"git.loafle.net/commons_go/server"
@@ -34,7 +35,7 @@ func (sh *ServerHandlers) Init() error {
 }
 
 func (sh *ServerHandlers) OnStart() {
-	// no op
+	discovery.DiscoveryInit()
 }
 
 func (sh *ServerHandlers) OnConnect(conn net.Conn) (net.Conn, error) {
@@ -73,7 +74,7 @@ func (sh *ServerHandlers) Handle(conn net.Conn, stopChan <-chan struct{}, doneCh
 }
 
 func (sh *ServerHandlers) OnStop() {
-	// no op
+	discovery.DiscoveryDestroy()
 }
 
 func (sh *ServerHandlers) Validate() {