|
| 1 | +package ingress |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "crypto/tls" |
| 6 | + "fmt" |
| 7 | + "net" |
| 8 | + "net/http" |
| 9 | + "net/http/httptest" |
| 10 | + "testing" |
| 11 | + "time" |
| 12 | + |
| 13 | + "github.com/cloudflare/cloudflared/logger" |
| 14 | + "github.com/gobwas/ws/wsutil" |
| 15 | + "github.com/gorilla/websocket" |
| 16 | + "github.com/stretchr/testify/assert" |
| 17 | + "github.com/stretchr/testify/require" |
| 18 | + "golang.org/x/sync/errgroup" |
| 19 | +) |
| 20 | + |
| 21 | +const ( |
| 22 | + testStreamTimeout = time.Second * 3 |
| 23 | +) |
| 24 | + |
| 25 | +var ( |
| 26 | + testLogger = logger.Create(nil) |
| 27 | + testMessage = []byte("TestStreamOriginConnection") |
| 28 | + testResponse = []byte(fmt.Sprintf("echo-%s", testMessage)) |
| 29 | +) |
| 30 | + |
| 31 | +func TestStreamTCPConnection(t *testing.T) { |
| 32 | + cfdConn, originConn := net.Pipe() |
| 33 | + tcpConn := tcpConnection{ |
| 34 | + conn: cfdConn, |
| 35 | + } |
| 36 | + |
| 37 | + eyeballConn, edgeConn := net.Pipe() |
| 38 | + |
| 39 | + ctx, cancel := context.WithTimeout(context.Background(), testStreamTimeout) |
| 40 | + defer cancel() |
| 41 | + |
| 42 | + errGroup, ctx := errgroup.WithContext(ctx) |
| 43 | + errGroup.Go(func() error { |
| 44 | + _, err := eyeballConn.Write(testMessage) |
| 45 | + |
| 46 | + readBuffer := make([]byte, len(testResponse)) |
| 47 | + _, err = eyeballConn.Read(readBuffer) |
| 48 | + require.NoError(t, err) |
| 49 | + |
| 50 | + require.Equal(t, testResponse, readBuffer) |
| 51 | + |
| 52 | + return nil |
| 53 | + }) |
| 54 | + errGroup.Go(func() error { |
| 55 | + echoTCPOrigin(t, originConn) |
| 56 | + originConn.Close() |
| 57 | + return nil |
| 58 | + }) |
| 59 | + |
| 60 | + tcpConn.Stream(ctx, edgeConn, testLogger) |
| 61 | + require.NoError(t, errGroup.Wait()) |
| 62 | +} |
| 63 | + |
| 64 | +func TestStreamWSOverTCPConnection(t *testing.T) { |
| 65 | + cfdConn, originConn := net.Pipe() |
| 66 | + tcpOverWSConn := tcpOverWSConnection{ |
| 67 | + conn: cfdConn, |
| 68 | + streamHandler: DefaultStreamHandler, |
| 69 | + } |
| 70 | + |
| 71 | + eyeballConn, edgeConn := net.Pipe() |
| 72 | + |
| 73 | + ctx, cancel := context.WithTimeout(context.Background(), testStreamTimeout) |
| 74 | + defer cancel() |
| 75 | + |
| 76 | + errGroup, ctx := errgroup.WithContext(ctx) |
| 77 | + errGroup.Go(func() error { |
| 78 | + echoWSEyeball(t, eyeballConn) |
| 79 | + return nil |
| 80 | + }) |
| 81 | + errGroup.Go(func() error { |
| 82 | + echoTCPOrigin(t, originConn) |
| 83 | + originConn.Close() |
| 84 | + return nil |
| 85 | + }) |
| 86 | + |
| 87 | + tcpOverWSConn.Stream(ctx, edgeConn, testLogger) |
| 88 | + require.NoError(t, errGroup.Wait()) |
| 89 | +} |
| 90 | + |
| 91 | +func TestStreamWSConnection(t *testing.T) { |
| 92 | + eyeballConn, edgeConn := net.Pipe() |
| 93 | + |
| 94 | + origin := echoWSOrigin(t) |
| 95 | + defer origin.Close() |
| 96 | + |
| 97 | + req, err := http.NewRequest(http.MethodGet, origin.URL, nil) |
| 98 | + require.NoError(t, err) |
| 99 | + req.Header.Set("Sec-Websocket-Key", "dGhlIHNhbXBsZSBub25jZQ==") |
| 100 | + |
| 101 | + clientTLSConfig := &tls.Config{ |
| 102 | + InsecureSkipVerify: true, |
| 103 | + } |
| 104 | + wsConn, resp, err := newWSConnection(clientTLSConfig, req) |
| 105 | + require.NoError(t, err) |
| 106 | + require.Equal(t, http.StatusSwitchingProtocols, resp.StatusCode) |
| 107 | + require.Equal(t, "Upgrade", resp.Header.Get("Connection")) |
| 108 | + require.Equal(t, "s3pPLMBiTxaQ9kYGzzhZRbK+xOo=", resp.Header.Get("Sec-Websocket-Accept")) |
| 109 | + require.Equal(t, "websocket", resp.Header.Get("Upgrade")) |
| 110 | + |
| 111 | + ctx, cancel := context.WithTimeout(context.Background(), testStreamTimeout) |
| 112 | + defer cancel() |
| 113 | + |
| 114 | + errGroup, ctx := errgroup.WithContext(ctx) |
| 115 | + errGroup.Go(func() error { |
| 116 | + echoWSEyeball(t, eyeballConn) |
| 117 | + return nil |
| 118 | + }) |
| 119 | + |
| 120 | + wsConn.Stream(ctx, edgeConn, testLogger) |
| 121 | + require.NoError(t, errGroup.Wait()) |
| 122 | +} |
| 123 | + |
| 124 | +func echoWSEyeball(t *testing.T, conn net.Conn) { |
| 125 | + require.NoError(t, wsutil.WriteClientBinary(conn, testMessage)) |
| 126 | + |
| 127 | + readMsg, err := wsutil.ReadServerBinary(conn) |
| 128 | + require.NoError(t, err) |
| 129 | + |
| 130 | + require.Equal(t, testResponse, readMsg) |
| 131 | + |
| 132 | + require.NoError(t, conn.Close()) |
| 133 | +} |
| 134 | + |
| 135 | +func echoWSOrigin(t *testing.T) *httptest.Server { |
| 136 | + var upgrader = websocket.Upgrader{ |
| 137 | + ReadBufferSize: 10, |
| 138 | + WriteBufferSize: 10, |
| 139 | + } |
| 140 | + |
| 141 | + ws := func(w http.ResponseWriter, r *http.Request) { |
| 142 | + header := make(http.Header) |
| 143 | + for k, vs := range r.Header { |
| 144 | + if k == "Test-Cloudflared-Echo" { |
| 145 | + header[k] = vs |
| 146 | + } |
| 147 | + } |
| 148 | + conn, err := upgrader.Upgrade(w, r, header) |
| 149 | + require.NoError(t, err) |
| 150 | + defer conn.Close() |
| 151 | + |
| 152 | + for { |
| 153 | + messageType, p, err := conn.ReadMessage() |
| 154 | + if err != nil { |
| 155 | + return |
| 156 | + } |
| 157 | + require.Equal(t, testMessage, p) |
| 158 | + if err := conn.WriteMessage(messageType, testResponse); err != nil { |
| 159 | + return |
| 160 | + } |
| 161 | + } |
| 162 | + } |
| 163 | + |
| 164 | + // NewTLSServer starts the server in another thread |
| 165 | + return httptest.NewTLSServer(http.HandlerFunc(ws)) |
| 166 | +} |
| 167 | + |
| 168 | +func echoTCPOrigin(t *testing.T, conn net.Conn) { |
| 169 | + readBuffer := make([]byte, len(testMessage)) |
| 170 | + _, err := conn.Read(readBuffer) |
| 171 | + assert.NoError(t, err) |
| 172 | + |
| 173 | + assert.Equal(t, testMessage, readBuffer) |
| 174 | + |
| 175 | + _, err = conn.Write(testResponse) |
| 176 | + assert.NoError(t, err) |
| 177 | +} |
0 commit comments