REPRODUCIBILITY: Always
OS VERSION: 4.6.0.15
HARDWARE: Xperia 10iii and Xperia 10 (others not tested)
UI LANGUAGE: English
REGRESSION: I have no idea, never tested this scenario before
DESCRIPTION:
When sending an email with attachments of ~2MB through an external Wireguard connection (basically, SFOS connects to a host in my LAN that has a Wireguard interface that then connects to another host), SFOS times out.
Seeing tcpdump, you can tell how the external host acknowledges a number of packets but SFOS stops responding. SFOS logs display a “Socket error” eventually in the logs, and a timeout error in the UI.
The same test going to the same host but outside the LAN, through the cellular connection (and thus without Wireguard in the middle), works fine.
Other applications in the LAN work perfectly fine under the exact same scenario. SFOS works fine in this scenario when sending a plain text email.
PRECONDITIONS:
- Have an outbound mail server set up that’s accessible via a Wireguard connection in the local LAN.
- Set up an email account in SFOS
STEPS TO REPRODUCE:
Send an email with ~2MB attachments.
EXPECTED RESULT:
e-mail sent successfully after enough time is allowed to upload the 2MB.
ACTUAL RESULT:
See description - timeout, socket error, SFOS stops doing networking.
MODIFICATIONS:
None.
ADDITIONAL INFORMATION:
There is a concern that if we use SFOS in a WLAN that’s somehow leveraging Wireguard, we might experience a very strange and erratic behaviour.
