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fix: return 461 if client requested an invalid transport method

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This commit is contained in:
fmcloudconsulting
2024-12-17 17:28:13 +01:00
committed by GitHub
parent 29f7f1a57d
commit fd125ecc68
1 changed files with 24 additions and 17 deletions
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41
pkg/rtsp/server.go
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@@ -150,28 +150,35 @@ func (c *Conn) Accept() error {
const transport = "RTP/AVP/TCP;unicast"
c.session = core.RandString(8, 10)
c.state = StateSetup
// Test if client requests unicast with TCP transport, otherwise return 461 Transport not supported
// This allows smart clients who initially requested UDP to fall back on TCP transport.
if strings.HasPrefix(tr, transport) {
c.session = core.RandString(8, 10)
c.state = StateSetup
if c.mode == core.ModePassiveConsumer {
if i := reqTrackID(req); i >= 0 && i < len(c.Senders) {
// mark sender as SETUP
c.Senders[i].Media.ID = MethodSetup
interleaved := fmt.Sprintf("%d-%d", i*2, i*2+1)
// Check if transport already contains the 'interleaved' parameter
if strings.Contains(transport, "interleaved=") {
// If so, just update the interleaved value
res.Header.Set("Transport", strings.Replace(transport, "interleaved=[^;]*", "interleaved="+interleaved, 1))
if c.mode == core.ModePassiveConsumer {
if i := reqTrackID(req); i >= 0 && i < len(c.Senders) {
// mark sender as SETUP
c.Senders[i].Media.ID = MethodSetup
interleaved := fmt.Sprintf("%d-%d", i*2, i*2+1)
// Check if transport already contains the 'interleaved' parameter
if strings.Contains(transport, "interleaved=") {
// If so, just update the interleaved value
res.Header.Set("Transport", strings.Replace(transport, "interleaved=[^;]*", "interleaved="+interleaved, 1))
} else {
// Otherwise, append the interleaved parameter
res.Header.Set("Transport", transport+";interleaved="+interleaved)
}
} else {
// Otherwise, append the interleaved parameter
res.Header.Set("Transport", transport+";interleaved="+interleaved)
res.Status = "400 Bad Request"
}
} else {
res.Status = "400 Bad Request"
res.Header.Set("Transport", tr)
}
} else {
res.Header.Set("Transport", tr)
else {
res.Status = "461 Unsupported transport"
}
if err = c.WriteResponse(res); err != nil {