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Run the tailnet SOCKS proxy in Swift so the iPhone app reconnects

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Ian Gulliver
2026-10-22 08:11:32 -07:00
parent e28071f380
commit 519199eba4
4 changed files with 202 additions and 18 deletions
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docs/macos.md
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@@ -26,7 +26,8 @@ Every build is signed for distribution outside the App Store: the team's Develop
## Startup and streams
- Startup waits until the app's tailnet node lists the server's node among its peers, not just until it is `Running`: a node starting from libtailscale's netmap cache reports `Running` with no peers before control sends the real netmap, and a dial then waits out the SOCKS proxy's 5 s and is refused, which `URLSession` reports as "bad URL".
- Startup waits until the app's tailnet node lists the server's node among its peers, not just until it is `Running`: a node starting from libtailscale's netmap cache reports `Running` with no peers before control sends the real netmap, and a dial made then fails.
- Every request reaches the tailnet through byre's own SOCKS5 proxy on a loopback port (`Proxy.swift`), which dials with `tailscale_dial`, not libtailscale's `tailscale_loopback`. iOS reclaims a suspended app's listening sockets, and tsnet's proxy stops for good on the first failed accept, leaving the phone unable to reach any server. byre's proxy binds again on the same port each time the app returns to the foreground.
- Run byre on this Mac and the Server tab run `byre install` through the user's login shell, since `byre install` copies its `PATH` into the service and the app's own `PATH` from launchd finds none of `claude`, `codex`, `agy` or `npx`.
- SwiftUI's window restoration is off, but the scene keeps the id `main` that earlier builds used: AppKit restores their saved window by that id, and SwiftUI then opens no launch window at all when the id names no scene.