fix kcp/quic issue of client. Use their tags instead of udp

README.md

@@ -93,7 +93,7 @@ The below is a simple example.
     // define example.Arith
     ……
 
-    s := server.Server{}
+    s := server.NewServer()
 	s.RegisterName("Arith", new(example.Arith), "")
 	s.Serve("tcp", addr)
 

client/connection_kcp.go

@@ -0,0 +1,22 @@
+// +build kcp
+
+package client
+
+import (
+	"net"
+
+	kcp "github.com/xtaci/kcp-go"
+)
+
+func newDirectKCPConn(c *Client, network, address string) (net.Conn, error) {
+	var conn net.Conn
+	var err error
+
+	conn, err = kcp.DialWithOptions(address, c.option.Block.(kcp.BlockCrypt), 10, 3)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return conn, nil
+}

client/connection_nonkcp.go

@@ -0,0 +1,12 @@
+// +build !kcp
+
+package client
+
+import (
+	"errors"
+	"net"
+)
+
+func newDirectKCPConn(c *Client, network, address string) (net.Conn, error) {
+	return nil, errors.New("kcp unsupported")
+}

client/connection_basic.go → client/connection_nonquic.go

@@ -1,4 +1,4 @@
-// +build !udp
+// +build !quic
 
 package client
 
@@ -7,10 +7,6 @@ import (
 	"net"
 )
 
-func newDirectKCPConn(c *Client, network, address string) (net.Conn, error) {
-	return nil, errors.New("kcp unsupported")
-}
-
 func newDirectQuicConn(c *Client, network, address string) (net.Conn, error) {
 	return nil, errors.New("quic unsupported")
 }

client/connection_udp.go → client/connection_quic.go

@@ -1,4 +1,4 @@
-// +build udp
+// +build quic
 
 package client
 
@@ -7,22 +7,8 @@ import (
 	"net"
 
 	quicconn "github.com/marten-seemann/quic-conn"
-	kcp "github.com/xtaci/kcp-go"
 )
 
-func newDirectKCPConn(c *Client, network, address string) (net.Conn, error) {
-	var conn net.Conn
-	var err error
-
-	conn, err = kcp.DialWithOptions(address, c.option.Block.(kcp.BlockCrypt), 10, 3)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return conn, nil
-}
-
 func newDirectQuicConn(c *Client, network, address string) (net.Conn, error) {
 	var conn net.Conn
 	var err error

client/selector.go

@@ -89,6 +89,7 @@ func (s *roundRobinSelector) Select(ctx context.Context, servicePath, serviceMet
 	i := s.i
 	i = i % len(ss)
 	s.i = i + 1
+
 	return ss[i]
 }
 

server/server.go

@@ -85,7 +85,6 @@ func NewServer(options ...OptionFn) *Server {
 	}
 
 	for _, op := range options {
-		fmt.Printf("%T\n", op)
 		op(s)
 	}