Metered network connections support

[dmitrivMS]

Fixes #103451

Includes public API, user setting, status bar icon and a new service to support metered network connections.
Updates code in various areas performing automated actions using network to delay/pause network operations while network connection is being metered.

While connection is metered:

• Automatic update downloads (but not checks) will be paused unless the user takes explicit action to download.
• Automatic extension updates will be paused unless user takes explicit action to update.
• User settings sync will be paused unless explicitly invoked by the user.
• Git auto-sync operations will be paused (skipped) unless explicitly invoked by the user.
• Telemetry upload will be paused.

Once connection is no longer metered, all automatic operations will resume on their normal schedule/triggers.

Status bar update:

New user setting:
update.respectMeteredConnections

[Copilot]

Pull request overview

This PR implements comprehensive support for detecting and respecting metered network connections (such as mobile data or tethering) to reduce data usage on limited connections.

Changes:

• Adds new proposed API env.isConnectionMetered and env.onDidChangeIsConnectionMetered for extensions
• Implements metered connection detection using the Network Information API with fallback logic
• Pauses automatic operations (updates, extension updates, Settings Sync, telemetry, and Git operations) when on metered connections
• Adds status bar indicator when a metered connection is detected

Reviewed changes

Copilot reviewed 45 out of 46 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
src/vscode-dts/vscode.proposed.envIsConnectionMetered.d.ts	Defines proposed API for metered connection detection
src/vs/platform/meteredConnection/common/meteredConnection.ts	Core service interface and Network Information API types
src/vs/platform/meteredConnection/browser/meteredConnectionService.ts	Browser implementation monitoring navigator.connection
src/vs/platform/meteredConnection/electron-browser/meteredConnectionService.ts	Electron renderer implementation with IPC to main process
src/vs/platform/meteredConnection/electron-main/meteredConnectionMainService.ts	Electron main process service receiving IPC updates
src/vs/workbench/api/common/extHostMeteredConnection.ts	Extension host implementation for proposed API
src/vs/workbench/api/browser/mainThreadMeteredConnection.ts	Main thread bridge for extension API
src/vs/workbench/contrib/meteredConnection/browser/meteredConnectionStatus.ts	Status bar indicator when metered
src/vs/platform/update/electron-main/abstractUpdateService.ts	Skips automatic update checks/downloads on metered connections
src/vs/platform/telemetry/common/telemetryService.ts	Buffers telemetry events when metered, flushes when recovered
src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts	Skips automatic extension update checks on metered connections
src/vs/platform/userDataSync/common/userDataAutoSyncService.ts	Skips Settings Sync on metered connections
extensions/git/src/autofetch.ts	Disables Git autofetch on metered connections
extensions/git/src/postCommitCommands.ts	Skips automatic post-commit operations on metered connections
src/vs/platform/update/common/update.config.contribution.ts	Adds update.respectMeteredConnections configuration setting
src/vs/workbench/workbench.*.main.ts	Registers metered connection services in workbench layers
src/vs/code/electron-main/app.ts	Sets up IPC handling for metered connection status updates

Comments suppressed due to low confidence (1)

src/vs/platform/meteredConnection/browser/meteredConnectionService.ts:56

• The configuration value is read at the end of the constructor after event listeners are set up. This creates a timing issue where if the configuration changes between lines 55-56, the event listener (lines 45-53) might fire before the initial value is set. This could cause the service to fire an event with stale data. Consider reading the configuration value before setting up the change listener, or ensure the initial event firing happens consistently.

		this._register(this.configurationService.onDidChangeConfiguration(e => {
			if (e.affectsConfiguration(METERED_CONNECTION_SETTING_KEY)) {
				const value = this.configurationService.getValue<boolean>(METERED_CONNECTION_SETTING_KEY);
				if (this._respectMeteredConnections !== value) {
					this._respectMeteredConnections = value;
					this._onDidChangeIsConnectionMetered.fire(this.isConnectionMetered);
				}
			}
		}));

		this._respectMeteredConnections = this.configurationService.getValue<boolean>(METERED_CONNECTION_SETTING_KEY);
		this._isConnectionMetered = getIsConnectionMetered();

[vs-code-engineering]

📬 CODENOTIFY

The following users are being notified based on files changed in this PR:

@rzhao271

Matched files:

• src/vs/workbench/contrib/preferences/browser/settingsLayout.ts

[joaomoreno]

@copilot Show me diagrams explaining the flows here. What happens when a user goes into a metered connection? Which systems are affected? What happens when a user disables respecting metered connection state?

[Copilot]

@joaomoreno I've opened a new pull request, #289126, to work on those changes. Once the pull request is ready, I'll request review from you.

[joaomoreno]

FYI kicked off a new build for testing: https://dev.azure.com/monacotools/Monaco/_build/results?buildId=394456&view=results

[Copilot]

Pull request overview

Copilot reviewed 50 out of 51 changed files in this pull request and generated 2 comments.