[cburyta]

Summary

Allow Sim Desktop to load a configured self-hosted origin when its hostname resolves to private address space.

Chromium's Local Network Access checks can reject the main-frame navigation with ERR_ADDRESS_UNREACHABLE (-109) before Electron reaches the deployment or can present a permission prompt. The configured Sim origin is already an explicit trust decision and owns the shell preload bridge.

This change adds an ip-address-space-overrides entry for only the configured self-hosted hostname. It does not disable Local Network Access checks process-wide, so arbitrary built-in browser destinations retain the protection. Sim-operated and loopback origins are unchanged. Server changes already relaunch the app, so the override follows the newly configured origin on restart.

Reproduction

Tested with Sim Desktop 0.9.46 / Electron 43.8.1 and a self-hosted HTTPS origin resolving to 192.168.50.153:

• system DNS resolution succeeded
• curl and a normal browser reached the deployment successfully
• Sim Desktop logged load_failure with ERR_ADDRESS_UNREACHABLE (-109)
• launching the unchanged release with --ip-address-space-overrides=<host>=public loaded successfully
• a packaged build of this branch loaded the same origin without any command-line flags

Validation

• bun run --cwd apps/desktop test -- config.test.ts
• bun run --cwd apps/desktop lint:check
• bun run --cwd apps/desktop type-check
• bun run --cwd apps/desktop build
• CSC_IDENTITY_AUTO_DISCOVERY=false bun run --cwd apps/desktop package:dir
• packaged app launched against the private self-hosted deployment without the override flag
• pre-push full-repository lint and type-check hooks passed

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Nov 7, 2026 3:52am UTC

[greptile-apps]

Confidence Score: 4/5

[Medium impact] The change affects the configured server navigation in Sim Desktop.

The PR appears safe to merge, with a non-blocking startup recovery issue that can require one extra restart.

Findings

1.  Recovered server still fails ▶

Summary

This PR adds a Chromium address-space override for the configured self-hosted hostname.

• Sim Desktop loads configured self-hosted servers on private networks.

_{Reviews (1) · Last reviewed commit: "fix(desktop): allow private self-hosted ..." · Reviewed by Greptile}