package connection import ( "fmt" "io" "net/http" "net/url" "testing" "time" "github.com/gobwas/ws/wsutil" "github.com/rs/zerolog" "github.com/stretchr/testify/assert" ) const ( largeFileSize = 2 * 1024 * 1024 ) var ( testConfig = &Config{ OriginClient: &mockOriginClient{}, GracePeriod: time.Millisecond * 100, } log = zerolog.Nop() testOriginURL = &url.URL{ Scheme: "https", Host: "connectiontest.argotunnel.com", } testObserver = NewObserver(&log, &log, false) testLargeResp = make([]byte, largeFileSize) ) type testRequest struct { name string endpoint string expectedStatus int expectedBody []byte isProxyError bool } type mockOriginClient struct { } func (moc *mockOriginClient) Proxy(w ResponseWriter, r *http.Request, isWebsocket bool) error { if isWebsocket { return wsEndpoint(w, r) } switch r.URL.Path { case "/ok": originRespEndpoint(w, http.StatusOK, []byte(http.StatusText(http.StatusOK))) case "/large_file": originRespEndpoint(w, http.StatusOK, testLargeResp) case "/400": originRespEndpoint(w, http.StatusBadRequest, []byte(http.StatusText(http.StatusBadRequest))) case "/500": originRespEndpoint(w, http.StatusInternalServerError, []byte(http.StatusText(http.StatusInternalServerError))) case "/error": return fmt.Errorf("Failed to proxy to origin") default: originRespEndpoint(w, http.StatusNotFound, []byte("page not found")) } return nil } type nowriter struct { io.Reader } func (nowriter) Write(p []byte) (int, error) { return 0, fmt.Errorf("Writer not implemented") } func wsEndpoint(w ResponseWriter, r *http.Request) error { resp := &http.Response{ StatusCode: http.StatusSwitchingProtocols, } _ = w.WriteRespHeaders(resp) clientReader := nowriter{r.Body} go func() { for { data, err := wsutil.ReadClientText(clientReader) if err != nil { return } if err := wsutil.WriteServerText(w, data); err != nil { return } } }() <-r.Context().Done() return nil } func originRespEndpoint(w ResponseWriter, status int, data []byte) { resp := &http.Response{ StatusCode: status, } _ = w.WriteRespHeaders(resp) _, _ = w.Write(data) } type mockConnectedFuse struct{} func (mcf mockConnectedFuse) Connected() {} func (mcf mockConnectedFuse) IsConnected() bool { return true } func TestIsEventStream(t *testing.T) { tests := []struct { headers http.Header isEventStream bool }{ { headers: newHeader("Content-Type", "text/event-stream"), isEventStream: true, }, { headers: newHeader("content-type", "text/event-stream"), isEventStream: true, }, { headers: newHeader("Content-Type", "text/event-stream; charset=utf-8"), isEventStream: true, }, { headers: newHeader("Content-Type", "application/json"), isEventStream: false, }, { headers: http.Header{}, isEventStream: false, }, } for _, test := range tests { assert.Equal(t, test.isEventStream, IsServerSentEvent(test.headers)) } } func newHeader(key, value string) http.Header { header := http.Header{} header.Add(key, value) return header }