1  // Copyright 2025 Alibaba Group Holding Ltd.
  2  //
  3  // Licensed under the Apache License, Version 2.0 (the "License");
  4  // you may not use this file except in compliance with the License.
  5  // You may obtain a copy of the License at
  6  //
  7  //     http://www.apache.org/licenses/LICENSE-2.0
  8  //
  9  // Unless required by applicable law or agreed to in writing, software
 10  // distributed under the License is distributed on an "AS IS" BASIS,
 11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12  // See the License for the specific language governing permissions and
 13  // limitations under the License.
 14  
 15  package proxy
 16  
 17  import (
 18  	"context"
 19  	"net"
 20  	"net/http"
 21  	"net/http/httptest"
 22  	"testing"
 23  
 24  	"github.com/alibaba/opensandbox/ingress/pkg/sandbox"
 25  	"github.com/stretchr/testify/assert"
 26  )
 27  
 28  // stubNoSecureProvider is a minimal sandbox.Provider for unit tests (no access-token / secure routing).
 29  type stubNoSecureProvider struct{}
 30  
 31  func (stubNoSecureProvider) GetEndpoint(string) (*sandbox.EndpointInfo, error) {
 32  	return &sandbox.EndpointInfo{Endpoint: "127.0.0.1"}, nil
 33  }
 34  
 35  func (stubNoSecureProvider) Start(context.Context) error { return nil }
 36  
 37  // Test_WatchPods is removed as we now use BatchSandbox Provider instead of direct Pod watching
 38  
 39  func TestIsWebSocketRequest(t *testing.T) {
 40  	proxy := &Proxy{}
 41  
 42  	// Valid websocket request
 43  	req := httptest.NewRequest(http.MethodGet, "/ws", nil)
 44  	req.Header.Set("Upgrade", "websocket")
 45  	req.Header.Set("Connection", "Upgrade")
 46  	assert.True(t, proxy.isWebSocketRequest(req))
 47  
 48  	// Missing upgrade headers
 49  	req = httptest.NewRequest(http.MethodGet, "/ws", nil)
 50  	assert.False(t, proxy.isWebSocketRequest(req))
 51  
 52  	// Wrong method
 53  	req = httptest.NewRequest(http.MethodPost, "/ws", nil)
 54  	req.Header.Set("Upgrade", "websocket")
 55  	req.Header.Set("Connection", "Upgrade")
 56  	assert.False(t, proxy.isWebSocketRequest(req))
 57  }
 58  
 59  func TestParseHostRoute(t *testing.T) {
 60  	pr, err := parseHostRoute("sandbox-1234.example.com")
 61  	assert.NoError(t, err)
 62  	assert.Equal(t, "sandbox", pr.sandboxID)
 63  	assert.Equal(t, 1234, pr.port)
 64  
 65  	pr, err = parseHostRoute("https://alpha-beta-8080.sandbox.test")
 66  	assert.NoError(t, err)
 67  	assert.Equal(t, "alpha-beta", pr.sandboxID)
 68  	assert.Equal(t, 8080, pr.port)
 69  
 70  	_, err = parseHostRoute("invalidhost")
 71  	assert.Error(t, err)
 72  
 73  	_, err = parseHostRoute("-1234.example.com")
 74  	assert.Error(t, err)
 75  }
 76  
 77  func TestGetClientIP(t *testing.T) {
 78  	proxy := &Proxy{}
 79  
 80  	req := httptest.NewRequest(http.MethodGet, "/", nil)
 81  	req.RemoteAddr = "192.0.2.1:12345"
 82  	assert.Equal(t, "192.0.2.1", proxy.getClientIP(req))
 83  
 84  	req = httptest.NewRequest(http.MethodGet, "/", nil)
 85  	req.RemoteAddr = "192.0.2.1:12345"
 86  	req.Header.Set(XRealIP, "203.0.113.5")
 87  	assert.Equal(t, "203.0.113.5", proxy.getClientIP(req))
 88  
 89  	req = httptest.NewRequest(http.MethodGet, "/", nil)
 90  	req.RemoteAddr = "192.0.2.1:12345"
 91  	req.Header.Set(XForwardedFor, "10.0.0.1, 198.51.100.2")
 92  	assert.Equal(t, "10.0.0.1", proxy.getClientIP(req))
 93  }
 94  
 95  func findAvailablePort() (int, error) {
 96  	listener, err := net.Listen("tcp", "127.0.0.1:0")
 97  	if err != nil {
 98  		return 0, err
 99  	}
100  	defer listener.Close()
101  
102  	port := listener.Addr().(*net.TCPAddr).Port
103  	return port, nil
104  }