cloudflare/cloudflared
Publicmirrored from https://github.com/cloudflare/cloudflaredAvailable
carrier/websocket_test.go
123lines · modeblame
3ad99b24Igor Postelnik5 years ago | 1 | package carrier |
| 2 | | |
| 3 | import ( | |
| 4 | "context" | |
| 5 | "crypto/tls" | |
| 6 | "crypto/x509" | |
| 7 | "fmt" | |
| 8 | "math/rand" | |
| 9 | "testing" | |
| 10 | "time" | |
| 11 | | |
| 12 | gws "github.com/gorilla/websocket" | |
| 13 | "github.com/rs/zerolog" | |
| 14 | "github.com/stretchr/testify/assert" | |
| 15 | "github.com/stretchr/testify/require" | |
| 16 | "golang.org/x/net/websocket" | |
| 17 | | |
| 18 | "github.com/cloudflare/cloudflared/hello" | |
| 19 | "github.com/cloudflare/cloudflared/tlsconfig" | |
| 20 | cfwebsocket "github.com/cloudflare/cloudflared/websocket" | |
| 21 | ) | |
| 22 | | |
| 23 | func websocketClientTLSConfig(t *testing.T) *tls.Config { | |
| 24 | certPool := x509.NewCertPool() | |
| 25 | helloCert, err := tlsconfig.GetHelloCertificateX509() | |
| 26 | assert.NoError(t, err) | |
| 27 | certPool.AddCert(helloCert) | |
| 28 | assert.NotNil(t, certPool) | |
| 29 | return &tls.Config{RootCAs: certPool} | |
| 30 | } | |
| 31 | | |
| 32 | func TestWebsocketHeaders(t *testing.T) { | |
| 33 | req := testRequest(t, "http://example.com", nil) | |
| 34 | wsHeaders := websocketHeaders(req) | |
| 35 | for _, header := range stripWebsocketHeaders { | |
| 36 | assert.Empty(t, wsHeaders[header]) | |
| 37 | } | |
| 38 | assert.Equal(t, "curl/7.59.0", wsHeaders.Get("User-Agent")) | |
| 39 | } | |
| 40 | | |
| 41 | func TestServe(t *testing.T) { | |
| 42 | log := zerolog.Nop() | |
| 43 | shutdownC := make(chan struct{}) | |
| 44 | errC := make(chan error) | |
| 45 | listener, err := hello.CreateTLSListener("localhost:1111") | |
| 46 | assert.NoError(t, err) | |
| 47 | defer listener.Close() | |
| 48 | | |
| 49 | go func() { | |
| 50 | errC <- hello.StartHelloWorldServer(&log, listener, shutdownC) | |
| 51 | }() | |
| 52 | | |
| 53 | req := testRequest(t, "https://localhost:1111/ws", nil) | |
| 54 | | |
| 55 | tlsConfig := websocketClientTLSConfig(t) | |
| 56 | assert.NotNil(t, tlsConfig) | |
| 57 | d := gws.Dialer{TLSClientConfig: tlsConfig} | |
| 58 | conn, resp, err := clientConnect(req, &d) | |
| 59 | assert.NoError(t, err) | |
| 60 | assert.Equal(t, "websocket", resp.Header.Get("Upgrade")) | |
| 61 | | |
| 62 | for i := 0; i < 1000; i++ { | |
| 63 | messageSize := rand.Int()%2048 + 1 | |
| 64 | clientMessage := make([]byte, messageSize) | |
| 65 | // rand.Read always returns len(clientMessage) and a nil error | |
| 66 | rand.Read(clientMessage) | |
| 67 | err = conn.WriteMessage(websocket.BinaryFrame, clientMessage) | |
| 68 | assert.NoError(t, err) | |
| 69 | | |
| 70 | messageType, message, err := conn.ReadMessage() | |
| 71 | assert.NoError(t, err) | |
| 72 | assert.Equal(t, websocket.BinaryFrame, messageType) | |
| 73 | assert.Equal(t, clientMessage, message) | |
| 74 | } | |
| 75 | | |
| 76 | _ = conn.Close() | |
| 77 | close(shutdownC) | |
| 78 | <-errC | |
| 79 | } | |
| 80 | | |
| 81 | func TestWebsocketWrapper(t *testing.T) { | |
| 82 | listener, err := hello.CreateTLSListener("localhost:0") | |
| 83 | require.NoError(t, err) | |
| 84 | | |
| 85 | serverErrorChan := make(chan error) | |
| 86 | helloSvrCtx, cancelHelloSvr := context.WithCancel(context.Background()) | |
| 87 | defer func() { <-serverErrorChan }() | |
| 88 | defer cancelHelloSvr() | |
| 89 | go func() { | |
| 90 | log := zerolog.Nop() | |
| 91 | serverErrorChan <- hello.StartHelloWorldServer(&log, listener, helloSvrCtx.Done()) | |
| 92 | }() | |
| 93 | | |
| 94 | tlsConfig := websocketClientTLSConfig(t) | |
| 95 | d := gws.Dialer{TLSClientConfig: tlsConfig, HandshakeTimeout: time.Minute} | |
| 96 | testAddr := fmt.Sprintf("https://%s/ws", listener.Addr().String()) | |
| 97 | req := testRequest(t, testAddr, nil) | |
| 98 | conn, resp, err := clientConnect(req, &d) | |
| 99 | require.NoError(t, err) | |
| 100 | assert.Equal(t, "websocket", resp.Header.Get("Upgrade")) | |
| 101 | | |
| 102 | // Websocket now connected to test server so lets check our wrapper | |
| 103 | wrapper := cfwebsocket.GorillaConn{Conn: conn} | |
| 104 | buf := make([]byte, 100) | |
| 105 | wrapper.Write([]byte("abc")) | |
| 106 | n, err := wrapper.Read(buf) | |
| 107 | require.NoError(t, err) | |
| 108 | require.Equal(t, n, 3) | |
| 109 | require.Equal(t, "abc", string(buf[:n])) | |
| 110 | | |
| 111 | // Test partial read, read 1 of 3 bytes in one read and the other 2 in another read | |
| 112 | wrapper.Write([]byte("abc")) | |
| 113 | buf = buf[:1] | |
| 114 | n, err = wrapper.Read(buf) | |
| 115 | require.NoError(t, err) | |
| 116 | require.Equal(t, n, 1) | |
| 117 | require.Equal(t, "a", string(buf[:n])) | |
| 118 | buf = buf[:cap(buf)] | |
| 119 | n, err = wrapper.Read(buf) | |
| 120 | require.NoError(t, err) | |
| 121 | require.Equal(t, n, 2) | |
| 122 | require.Equal(t, "bc", string(buf[:n])) | |
| 123 | } |