add unix socket support

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

.gitignore

@@ -1,2 +1,3 @@
 .idea
 .bin
+/tmp

client/client.go

@@ -43,11 +43,16 @@ func New(opts ...Option) (Client, error) {
 	if len(c.opts.streamInterceptors) > 0 {
 		c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(c.opts.streamInterceptors...)))
 	}
-	if c.opts.addr == "" {
+	switch {
+	case c.opts.addr == "":
 		c.addr = fmt.Sprintf("%s:///%s", c.opts.registry.String(), c.opts.name)
-	} else if strings.HasPrefix(c.opts.addr, "tcp://") {
+	case strings.HasPrefix(c.opts.addr, "tcp://"):
 		c.addr = strings.Replace(c.opts.addr, "tcp://", "", 1)
-	} else {
+	case strings.HasPrefix(c.opts.addr, "unix:///"):
+		c.addr = c.opts.addr
+	case strings.HasPrefix(c.opts.addr, "unix://"):
+		c.addr = strings.Replace(c.opts.addr, "unix://", "unix:", 1)
+	default:
 		c.addr = c.opts.addr
 	}
 	if c.opts.version != "" && c.opts.addr == "" {

service/service.go

@@ -145,7 +145,13 @@ func (s *service) run() error {
 		return err
 	}
 
-	lis, err := net.Listen("tcp", s.opts.address)
+	network := "tcp"
+	if strings.HasPrefix(s.opts.address, "unix://") {
+		network = "unix"
+		s.opts.address = strings.TrimPrefix(s.opts.address, "unix://")
+	}
+
+	lis, err := net.Listen(network, s.opts.address)
 	if err != nil {
 		return err
 	}