Merge pull request #486 from micro/quic

add quic transport

transport/quic/quic.go

@@ -0,0 +1,187 @@
+// Package quic provides a QUIC based transport
+package quic
+
+import (
+	"crypto/tls"
+	"encoding/gob"
+
+	"github.com/micro/go-micro/cmd"
+	"github.com/lucas-clemente/quic-go"
+	"github.com/micro/go-micro/transport"
+	utls "github.com/micro/util/go/lib/tls"
+)
+
+type quicSocket struct {
+	s   quic.Session
+	st  quic.Stream
+	enc *gob.Encoder
+	dec *gob.Decoder
+}
+
+type quicTransport struct {
+	opts transport.Options
+}
+
+type quicClient struct {
+	*quicSocket
+	t    *quicTransport
+	opts transport.DialOptions
+}
+
+type quicListener struct {
+	l    quic.Listener
+	t    *quicTransport
+	opts transport.ListenOptions
+}
+
+func init() {
+	cmd.DefaultTransports["quic"] = NewTransport
+}
+
+func (q *quicClient) Close() error {
+	return q.quicSocket.st.Close()
+}
+
+func (q *quicSocket) Recv(m *transport.Message) error {
+	return q.dec.Decode(&m)
+}
+
+func (q *quicSocket) Send(m *transport.Message) error {
+	return q.enc.Encode(m)
+}
+
+func (q *quicSocket) Close() error {
+	return q.s.Close()
+}
+
+func (q *quicSocket) Local() string {
+	return q.s.LocalAddr().String()
+}
+
+func (q *quicSocket) Remote() string {
+	return q.s.RemoteAddr().String()
+}
+
+func (q *quicListener) Addr() string {
+	return q.l.Addr().String()
+}
+
+func (q *quicListener) Close() error {
+	return q.l.Close()
+}
+
+func (q *quicListener) Accept(fn func(transport.Socket)) error {
+	for {
+		s, err := q.l.Accept()
+		if err != nil {
+			return err
+		}
+
+		stream, err := s.AcceptStream()
+		if err != nil {
+			continue
+		}
+
+		go func() {
+			fn(&quicSocket{
+				s:   s,
+				st:  stream,
+				enc: gob.NewEncoder(stream),
+				dec: gob.NewDecoder(stream),
+			})
+		}()
+	}
+}
+
+func (q *quicTransport) Init(opts ...transport.Option) error {
+	for _, o := range opts {
+		o(&q.opts)
+	}
+	return nil
+}
+
+func (q *quicTransport) Options() transport.Options {
+	return q.opts
+}
+
+func (q *quicTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
+	var options transport.DialOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	config := q.opts.TLSConfig
+	if config == nil {
+		config = &tls.Config{
+			InsecureSkipVerify: true,
+		}
+	}
+	s, err := quic.DialAddr(addr, config, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	st, err := s.OpenStreamSync()
+	if err != nil {
+		return nil, err
+	}
+
+	enc := gob.NewEncoder(st)
+	dec := gob.NewDecoder(st)
+
+	return &quicClient{
+		&quicSocket{
+			s:   s,
+			st:  st,
+			enc: enc,
+			dec: dec,
+		},
+		q,
+		options,
+	}, nil
+}
+
+func (q *quicTransport) Listen(addr string, opts ...transport.ListenOption) (transport.Listener, error) {
+	var options transport.ListenOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	config := q.opts.TLSConfig
+	if config == nil {
+		cfg, err := utls.Certificate(addr)
+		if err != nil {
+			return nil, err
+		}
+		config = &tls.Config{
+			Certificates: []tls.Certificate{cfg},
+		}
+	}
+
+	l, err := quic.ListenAddr(addr, config, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return &quicListener{
+		l:    l,
+		t:    q,
+		opts: options,
+	}, nil
+}
+
+func (q *quicTransport) String() string {
+	return "quic"
+}
+
+func NewTransport(opts ...transport.Option) transport.Transport {
+	options := transport.Options{}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return &quicTransport{
+		opts: options,
+	}
+}