On some Android devices, the SIP connection failed

[ax3726]

Hello !
On some Android devices, the SIP connection failed, I don't know why, the following is the LinPhone client logs, can you help take a look
android_linphone_log.gz

[Viish]

Hi,
It's possible that your INVITE packets are too big for UDP and are getting lost.
It's also possible the answer to the INVITE is ill-formated given all those errors:

2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:650 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:651 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:660 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:660 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:720 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:720 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:760 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:760 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97

Anyway this ticket isn't for this repository, I'll transfer it to the proper one.
In the meantime switch to TCP or TLS to confirm it's due to UDP or not.

Cheers,

[ax3726]

Hi, It's possible that your INVITE packets are too big for UDP and are getting lost. It's also possible the answer to the INVITE is ill-formated given all those errors:

2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:620 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:650 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:651 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:660 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:660 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:680 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:720 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:720 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:760 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:760 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:790 [org.linphone.debug/ortp] WARNING Receiving packet with unknown payload type 97.
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97
2024-08-27 13:54:32:791 [org.linphone.debug/mediastreamer] WARNING Discarding packet with unknown payload type 97

Anyway this ticket isn't for this repository, I'll transfer it to the proper one. In the meantime switch to TCP or TLS to confirm it's due to UDP or not.

Cheers,

How do I switch to the TCP transport protocol ?

[ax3726]

I confirmed that the transfer protocol of the SIP server is TCP

[ax3726]

I didn't sign up with a SIP account, I used a peer-to-peer connection

[Viish]

You can do TCP over peer to peer, simply add ;transport=tcp to called SIP URI or use address.setTransport(TransportType.Tcp).

[ax3726]

您可以通过点对点进行 TCP 连接，只需添加;transport=tcp到被叫 SIP URI 或使用即可address.setTransport(TransportType.Tcp)。

After switching to TCP, I can connect, but the connection lasts for a period of time and the call automatically hangs up, what is the reason for this? The following is the log of the two devices, device 1 lasts for a short time, device 2 lasts for a long time, I suspect it is not caused by the same reason, please help to see
android_device1_linphone_log.gz
android_device2_linphone_log.gz

[ax3726]

In addition, the remote screen cannot be previewed after device 1 is connected