diff --git a/transport/internet/kcp/connection_test.go b/transport/internet/kcp/connection_test.go
new file mode 100644
index 00000000..36643f72
--- /dev/null
+++ b/transport/internet/kcp/connection_test.go
@@ -0,0 +1,21 @@
+package kcp_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/v2ray/v2ray-core/testing/assert"
+	. "github.com/v2ray/v2ray-core/transport/internet/kcp"
+)
+
+func TestConnectionReadTimeout(t *testing.T) {
+	assert := assert.On(t)
+
+	conn := NewConnection(1, nil, nil, nil, NewSimpleAuthenticator())
+	conn.SetReadDeadline(time.Now().Add(time.Second))
+
+	b := make([]byte, 1024)
+	nBytes, err := conn.Read(b)
+	assert.Int(nBytes).Equals(0)
+	assert.Error(err).IsNotNil()
+}