Add deadline interface

route/router.go

@@ -31,6 +31,7 @@ import (
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/buf"
 	"github.com/sagernet/sing/common/bufio"
+	"github.com/sagernet/sing/common/bufio/deadline"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"
@@ -624,6 +625,10 @@ func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata ad
 		r.logger.DebugContext(ctx, "found fakeip domain: ", domain)
 	}
 
+	if deadline.NeedAdditionalReadDeadline(conn) {
+		conn = deadline.NewConn(conn)
+	}
+
 	if metadata.InboundOptions.SniffEnabled {
 		buffer := buf.NewPacket()
 		buffer.FullReset()
@@ -729,6 +734,11 @@ func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, m
 		r.logger.DebugContext(ctx, "found fakeip domain: ", domain)
 	}
 
+	// Currently we don't have deadline usages for UDP connections
+	/*if deadline.NeedAdditionalReadDeadline(conn) {
+		conn = deadline.NewPacketConn(bufio.NewNetPacketConn(conn))
+	}*/
+
 	if metadata.InboundOptions.SniffEnabled {
 		buffer := buf.NewPacket()
 		buffer.FullReset()