diff --git a/database/socket/database.go b/database/socket/database.go
index c5e6083..7650432 100644
--- a/database/socket/database.go
+++ b/database/socket/database.go
@@ -1,10 +1,11 @@
 package socket
 
-/**
- * This database type is just for,
- * - debugging without a influxconn
- * - example for other developers for new databases
+/*
+ * This socket database is to run another service
+ * (without flooding the network with respondd packages)
+ * e.g. https://github.com/FreifunkBremen/freifunkmanager
  */
+
 import (
 	"log"
 	"net"
@@ -46,15 +47,15 @@ func Connect(configuration interface{}) (database.Connection, error) {
 }
 
 func (conn *Connection) InsertNode(node *runtime.Node) {
-	conn.sendJSON(EventMessage{Event: "insert_node", Body: node})
+	conn.sendJSON(Message{Event: MessageEventInsertNode, Body: node})
 }
 
 func (conn *Connection) InsertGlobals(stats *runtime.GlobalStats, time time.Time) {
-	conn.sendJSON(EventMessage{Event: "insert_globals", Body: stats})
+	conn.sendJSON(Message{Event: MessageEventInsertGlobals, Body: stats})
 }
 
 func (conn *Connection) PruneNodes(deleteAfter time.Duration) {
-	conn.sendJSON(EventMessage{Event: "prune_nodes"})
+	conn.sendJSON(Message{Event: MessageEventPruneNodes})
 }
 
 func (conn *Connection) Close() {
diff --git a/database/socket/database_test.go b/database/socket/database_test.go
index 562ee4b..ed3272b 100644
--- a/database/socket/database_test.go
+++ b/database/socket/database_test.go
@@ -1,6 +1,7 @@
 package socket
 
 import (
+	"encoding/json"
 	"net"
 	"testing"
 	"time"
@@ -53,20 +54,27 @@ func TestClient(t *testing.T) {
 	assert.NotNil(client)
 	time.Sleep(time.Duration(3) * time.Microsecond)
 
+	decoder := json.NewDecoder(client)
+	var msg Message
+
 	conn.InsertNode(&runtime.Node{})
+	decoder.Decode(&msg)
+	assert.Equal("insert_node", msg.Event)
+
 	conn.InsertGlobals(&runtime.GlobalStats{}, time.Now())
+	decoder.Decode(&msg)
+	assert.Equal("insert_globals", msg.Event)
+
+	conn.PruneNodes(time.Hour * 24 * 7)
+	decoder.Decode(&msg)
+	assert.Equal("prune_nodes", msg.Event)
 	time.Sleep(time.Duration(3) * time.Microsecond)
 
 	// to reach in sendJSON removing of disconnection
-	err = client.Close()
-	assert.NoError(err, "disconnect should work")
-	time.Sleep(time.Duration(3) * time.Microsecond)
-	conn.InsertNode(&runtime.Node{})
-	time.Sleep(time.Duration(3) * time.Microsecond)
-
-	// to reach all parts of conn.Close()
-	client, err = net.Dial("unix", "/tmp/yanic-database2.socket")
-	time.Sleep(time.Duration(3) * time.Microsecond)
-
 	conn.Close()
+
+	conn.InsertNode(&runtime.Node{})
+	err = decoder.Decode(&msg)
+	assert.Error(err)
+
 }
diff --git a/database/socket/internal.go b/database/socket/internal.go
index 311ce2d..17998ee 100644
--- a/database/socket/internal.go
+++ b/database/socket/internal.go
@@ -6,11 +6,6 @@ import (
 	"net"
 )
 
-type EventMessage struct {
-	Event string      `json:"event"`
-	Body  interface{} `json:"body,omitempty"`
-}
-
 func (conn *Connection) handleSocketConnection(ln net.Listener) {
 	for {
 		c, err := ln.Accept()
@@ -24,7 +19,7 @@ func (conn *Connection) handleSocketConnection(ln net.Listener) {
 	}
 }
 
-func (conn *Connection) sendJSON(msg EventMessage) {
+func (conn *Connection) sendJSON(msg Message) {
 	conn.clientMux.Lock()
 	for addr, c := range conn.clients {
 		d := json.NewEncoder(c)
diff --git a/database/socket/message.go b/database/socket/message.go
new file mode 100644
index 0000000..786c8d3
--- /dev/null
+++ b/database/socket/message.go
@@ -0,0 +1,12 @@
+package socket
+
+type Message struct {
+	Event string      `json:"event"`
+	Body  interface{} `json:"body,omitempty"`
+}
+
+const (
+	MessageEventInsertNode    = "insert_node"
+	MessageEventInsertGlobals = "insert_globals"
+	MessageEventPruneNodes    = "prune_nodes"
+)