Add graceful stop (go 1.8)

echo_go18.go

@@ -0,0 +1,25 @@
+// +build go1.8
+
+package echo
+
+import (
+	c "context"
+)
+
+// Close immediately stops server
+// equivalent of func (*http.Server) Close() error
+func (e *Echo) Close() error {
+	if err := e.TLSServer.Close(); err != nil {
+		return err
+	}
+	return e.Server.Close()
+}
+
+// Shutdown stops server gracefully
+// equivalent of func (*http.Server) Shutdown(ctx context.Context) error
+func (e *Echo) Shutdown(ctx c.Context) error {
+	if err := e.TLSServer.Shutdown(ctx); err != nil {
+		return err
+	}
+	return e.Server.Shutdown(ctx)
+}

echo_go18_test.go

@@ -0,0 +1,30 @@
+// +build go1.8
+
+package echo
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEchoClose(t *testing.T) {
+	e := New()
+	errCh := make(chan error)
+
+	go func() {
+		errCh <- e.Start(":0")
+	}()
+
+	time.Sleep(200 * time.Millisecond)
+
+	if err := e.Close(); err != nil {
+		t.Fatal(err)
+	}
+
+	assert.NoError(t, e.Close())
+
+	err := <-errCh
+	assert.Equal(t, err.Error(), "http: Server closed")
+}