Versioning of UI and grpc-agent for passing version (#324)

Send Desktop UI client version as user-agent to daemon

This is sent on every login request to the management

Parse the GRPC context on the system package and 
retrieves the user-agent

Management receives the new UIVersion field and 
store in the Peer's system meta

management/server/grpcserver.go

@@ -187,6 +187,7 @@ func (s *Server) registerPeer(peerKey wgtypes.Key, req *proto.LoginRequest) (*Pe
 	if meta == nil {
 		return nil, status.Errorf(codes.InvalidArgument, "peer meta data was not provided")
 	}
+
 	peer, err := s.accountManager.AddPeer(reqSetupKey, userId, &Peer{
 		Key:  peerKey.String(),
 		Name: meta.GetHostname(),
@@ -198,6 +199,7 @@ func (s *Server) registerPeer(peerKey wgtypes.Key, req *proto.LoginRequest) (*Pe
 			Platform:  meta.GetPlatform(),
 			OS:        meta.GetOS(),
 			WtVersion: meta.GetWiretrusteeVersion(),
+			UIVersion: meta.GetUiVersion(),
 		},
 	})
 	if err != nil {
@@ -279,7 +281,10 @@ func (s *Server) Login(ctx context.Context, req *proto.EncryptedMessage) (*proto
 			Core:      loginReq.GetMeta().GetCore(),
 			Platform:  loginReq.GetMeta().GetPlatform(),
 			OS:        loginReq.GetMeta().GetOS(),
-			WtVersion: loginReq.GetMeta().GetWiretrusteeVersion()})
+			WtVersion: loginReq.GetMeta().GetWiretrusteeVersion(),
+			UIVersion: loginReq.GetMeta().GetUiVersion(),
+		},
+		)
 		if err != nil {
 			log.Errorf("failed updating peer system meta data %s", peerKey.String())
 			return nil, status.Error(codes.Internal, "internal server error")

management/server/peer.go

@@ -1,11 +1,12 @@
 package server
 
 import (
-	log "github.com/sirupsen/logrus"
 	"net"
 	"strings"
 	"time"
 
+	log "github.com/sirupsen/logrus"
+
 	"github.com/netbirdio/netbird/management/proto"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -20,6 +21,7 @@ type PeerSystemMeta struct {
 	Platform  string
 	OS        string
 	WtVersion string
+	UIVersion string
 }
 
 type PeerStatus struct {
@@ -393,7 +395,13 @@ func (am *DefaultAccountManager) UpdatePeerMeta(peerKey string, meta PeerSystemM
 	}
 
 	peerCopy := peer.Copy()
+	// Avoid overwriting UIVersion if the update was triggered sole by the CLI client
+	if meta.UIVersion == "" {
+		meta.UIVersion = peerCopy.Meta.UIVersion
+	}
+
 	peerCopy.Meta = meta
+
 	err = am.Store.SavePeer(account.Id, peerCopy)
 	if err != nil {
 		return err