Persist credentials on source redirections (#124)

* add client opt to persist credentials on source redirections

* Remove PersistCredentialsOnRedirect flag, persist creds (if any) by default on redirects

* remove useless check

Co-authored-by: aler9 <46489434+aler9@users.noreply.github.com>

client.go

@@ -1211,15 +1211,19 @@ func (c *Client) doDescribe(u *base.URL) (Tracks, *base.URL, *base.Response, err
 			len(res.Header["Location"]) == 1 {
 			c.reset()
 
-			u, err := base.ParseURL(res.Header["Location"][0])
+			ru, err := base.ParseURL(res.Header["Location"][0])
 			if err != nil {
 				return nil, nil, nil, err
 			}
 
-			c.scheme = u.Scheme
-			c.host = u.Host
+			if u.User != nil {
+				ru.User = u.User
+			}
 
-			return c.doDescribe(u)
+			c.scheme = ru.Scheme
+			c.host = ru.Host
+
+			return c.doDescribe(ru)
 		}
 
 		return nil, nil, res, liberrors.ErrClientBadStatusCode{Code: res.StatusCode, Message: res.StatusMessage}

client_read_test.go

@@ -1573,6 +1573,20 @@ func TestClientReadDifferentInterleavedIDs(t *testing.T) {
 }
 
 func TestClientReadRedirect(t *testing.T) {
+	for _, withCredentials := range []bool{false, true} {
+		runName := "WithoutCredentials"
+		if withCredentials {
+			runName = "WithCredentials"
+		}
+		t.Run(runName, func(t *testing.T) {
+			packetRecv := make(chan struct{})
+
+			c := Client{
+				OnPacketRTP: func(ctx *ClientOnPacketRTPCtx) {
+					close(packetRecv)
+				},
+			}
+
 			l, err := net.Listen("tcp", "localhost:8554")
 			require.NoError(t, err)
 			defer l.Close()
@@ -1637,6 +1651,7 @@ func TestClientReadRedirect(t *testing.T) {
 						}, ", ")},
 					},
 				}.Write()
+
 				_, err = conn.Write(byts)
 				require.NoError(t, err)
 
@@ -1644,6 +1659,39 @@ func TestClientReadRedirect(t *testing.T) {
 				require.NoError(t, err)
 				require.Equal(t, base.Describe, req.Method)
 
+				if withCredentials {
+					if _, exists := req.Header["Authorization"]; !exists {
+						authRealm := "example@localhost"
+						authNonce := "exampleNonce"
+						authOpaque := "exampleOpaque"
+						authStale := "FALSE"
+						authAlg := "MD5"
+						byts, _ = base.Response{
+							Header: base.Header{
+								"WWW-Authenticate": headers.Authenticate{
+									Method:    headers.AuthDigest,
+									Realm:     &authRealm,
+									Nonce:     &authNonce,
+									Opaque:    &authOpaque,
+									Stale:     &authStale,
+									Algorithm: &authAlg,
+								}.Write(),
+							},
+							StatusCode: base.StatusUnauthorized,
+						}.Write()
+						_, err = conn.Write(byts)
+						require.NoError(t, err)
+					}
+					req, err = readRequest(br)
+					require.NoError(t, err)
+					authHeaderVal, exists := req.Header["Authorization"]
+					require.True(t, exists)
+					var authHeader headers.Authenticate
+					require.NoError(t, authHeader.Read(authHeaderVal))
+					require.Equal(t, *authHeader.Username, "testusr")
+					require.Equal(t, base.Describe, req.Method)
+				}
+
 				track, err := NewTrackH264(96, []byte{0x01, 0x02, 0x03, 0x04}, []byte{0x01, 0x02, 0x03, 0x04}, nil)
 				require.NoError(t, err)
 
@@ -1708,19 +1756,17 @@ func TestClientReadRedirect(t *testing.T) {
 				})
 			}()
 
-	packetRecv := make(chan struct{})
-
-	c := Client{
-		OnPacketRTP: func(ctx *ClientOnPacketRTPCtx) {
-			close(packetRecv)
-		},
+			ru := "rtsp://localhost:8554/path1"
+			if withCredentials {
+				ru = "rtsp://testusr:testpwd@localhost:8554/path1"
 			}
-
-	err = c.StartReading("rtsp://localhost:8554/path1")
+			err = c.StartReading(ru)
 			require.NoError(t, err)
 			defer c.Close()
 
 			<-packetRecv
+		})
+	}
 }
 
 func TestClientReadPause(t *testing.T) {