Disable pidfd check on Android 11 and below
On Android 11 (SDK <= 30) and earlier, pidfd-related system calls
are blocked by seccomp policies, causing SIGSYS crashes.
This change overrides `checkPidfdOnce` to return an error on
affected versions, preventing the use of unsupported pidfd features.
This PR introduces a new inactivity package responsible for monitoring peer activity and notifying when peers become inactive.
Introduces a new Signal message type to close the peer connection after the idle timeout is reached.
Periodically checks the last activity of registered peers via a Bind interface.
Notifies via a channel when peers exceed a configurable inactivity threshold.
Default settings
DefaultInactivityThreshold is set to 15 minutes, with a minimum allowed threshold of 1 minute.
Limitations
This inactivity check does not support kernel WireGuard integration. In kernel–user space communication, the user space side will always be responsible for closing the connection.
updates the route manager on Unix to use a unique, incrementing sequence number for each route message instead of a fixed value.
Replace the static Seq: 1 with a call to r.getSeq()
Add an atomic seq field and the getSeq method in SysOps
Adds support for using a random available WireGuard port when the user specifies port `0`.
- Updates `freePort` logic to bind to the requested port (including `0`) without falling back to the default.
- Removes default port assignment in the configuration path, allowing `0` to propagate.
- Adjusts tests to handle dynamically assigned ports when using `0`.
This PR introduces a new configuration option `DisableDefaultPolicy` that prevents the creation of the default all-to-all policy when new accounts are created. This is useful for automation scenarios where explicit policies are preferred.
### Key Changes:
- Added DisableDefaultPolicy flag to the management server config
- Modified account creation logic to respect this flag
- Updated all test cases to explicitly pass the flag (defaulting to false to maintain backward compatibility)
- Propagated the flag through the account manager initialization chain
### Testing:
- Verified default behavior remains unchanged when flag is false
- Confirmed no default policy is created when flag is true
- All existing tests pass with the new parameter
