V2Root Python SDK 2.0

A managed, modular Python 3.10+ SDK for V2Root Core.

The package contains no DLL, SO, C source, or external Xray executable. On first use it downloads the correct official V2Root Core release for the current platform, verifies the release archive, and installs it in an application cache.

Architecture

• v2root.core.CoreManager: discovery, install, update, activation and rollback
• v2root.native.NativeCore: strict ctypes ABI and native memory ownership
• v2root.client.V2RootClient: configuration, lifecycle, latency and metrics
• v2root.V2ROOT: compatibility facade for applications written against 1.x

Automatic Installation

from v2root import V2RootClient

client = V2RootClient()  # Downloads the latest compatible core when required.
client.connect("vless://...")
print(client.status)
print(client.traffic)
client.stop()

Structured batch testing and subscription integration:

from v2root import SubscriptionManager, V2RootClient

subscriptions = SubscriptionManager()
source = subscriptions.add_subscription("https://example.com/subscription")

with V2RootClient() as client:
    results = client.test_subscription(subscriptions, source.id)
    best = subscriptions.best_config(max_latency=500)
    if best:
        client.connect(best.config_string)

All low-level failures use typed exceptions. explain_error(error) returns a structured explanation with corrective actions. Legacy numeric errors -1 through -7 remain documented and supported by the explainer.

The default cache is:

• Windows: %LOCALAPPDATA%\V2Root\core
• Linux: $XDG_CACHE_HOME/v2root/core or ~/.cache/v2root/core

Set V2ROOT_CORE_HOME to override it.

Core Management

from v2root import CoreManager

manager = CoreManager()
installed = manager.ensure()
update = manager.update()
versions = manager.installed()
previous = manager.rollback()

Pin a release or disable network installation:

manager.install("v2root-v26.6.15")
client = V2RootClient(auto_install=False)

An explicit development build can be loaded without installing it. The xray-* basename in this example is the ABI asset name currently published by V2Root Core; it does not refer to a separately installed Xray executable:

client = V2RootClient(core_path="/path/to/xray-linux-amd64.so")

Installation Security

The manager:

1. Uses the official GitHub Releases API and release asset URL.
2. Selects the exact OS and architecture package.
3. Enforces download size limits.
4. Rejects unsafe ZIP paths.
5. Requires the binary, generated header, and SHA256SUMS.
6. Verifies the binary and header SHA-256 digests.
7. Installs into a temporary directory and activates atomically.
8. Retains older releases for rollback.

License

MIT License. See LICENSE.