discoverymgr/discovery_setTXT.go : add mutex for shared resource serverTXT

Change-Id: If0ec6997711b5a597c09437688f2e38ae9eb3ff1

diff --git a/src/discoverymgr/discovery_setTXT.go b/src/discoverymgr/discovery_setTXT.go
index 2867993..cc0cbe5 100755 (executable)
--- a/src/discoverymgr/discovery_setTXT.go
+++ b/src/discoverymgr/discovery_setTXT.go
@@ -18,11 +18,12 @@ package discoverymgr
 
 import (
        "errors"
-
+       "sync"
        confdescription "configuremgr/description"
 )
 
 var serverTXT []string
+var serverTXTmtx sync.Mutex
 
 //ResetServiceName will reset txt of mdns message
 func ResetServiceName() error {
@@ -45,6 +46,8 @@ func AddNewServiceName(doc *confdescription.Doc) error {
 
 //SetServiceNames set txt of mdns message
 func SetServiceNames(newService string) error {
+       serverTXTmtx.Lock()
+       defer serverTXTmtx.Unlock()
 
        if newService == "" {
                if gServer != nil {