Initial Commit

muxserver/muxserver.go

@@ -0,0 +1,64 @@
+package muxserver
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net"
+
+	"github.com/hashicorp/yamux"
+	"storj.io/drpc"
+	"storj.io/drpc/drpcserver"
+)
+
+// Server is a DRPC server that handles
+// multiplexed streams
+type Server struct {
+	srv *drpcserver.Server
+}
+
+// New returns a new multiplexed Server that serves handler
+func New(handler drpc.Handler) *Server {
+	return &Server{srv: drpcserver.New(handler)}
+}
+
+// NewWithOptions is the same as New but passes options to DRPC
+func NewWithOptions(handler drpc.Handler, opts drpcserver.Options) *Server {
+	return &Server{srv: drpcserver.NewWithOptions(handler, opts)}
+}
+
+// Serve listens on the given listener and handles all multiplexed
+// streams.
+func (s *Server) Serve(ctx context.Context, ln net.Listener) error {
+	for {
+		conn, err := ln.Accept()
+		if err != nil {
+			return err
+		}
+
+		sess, err := yamux.Server(conn, nil)
+		if err != nil {
+			return err
+		}
+
+		go s.handleSession(ctx, sess)
+	}
+}
+
+func (s *Server) handleSession(ctx context.Context, sess *yamux.Session) {
+	for {
+		conn, err := sess.Accept()
+		if errors.Is(err, io.EOF) {
+			break
+		} else if err != nil {
+			continue
+		}
+
+		go s.srv.ServeOne(ctx, conn)
+	}
+}
+
+// ServeOne serves a single set of rpcs on the provided transport.
+func (s *Server) ServeOne(ctx context.Context, conn io.ReadWriteCloser) error {
+	return s.srv.ServeOne(ctx, conn)
+}