What is the script address

This article explains the core concepts and technical implementation of script addresses, analyzes their application logic in scenarios such as automated proxy configuration and node information synchronization, and provides a comparison of script address management solutions for mainstream proxy tools.

1. Technical Definition and Core Value of Script Address

Script URL is a standardized access entry containing proxy configuration information, usually in the form of a URL in a specific format. Its core function is to dynamically load and update proxy parameters through automated scripts. The technical implementation includes three key levels:

Coding Standards Layer

Base64 encoding: Convert node information (server IP, port, encryption method) into a transmittable string

YAML/JSON structured: define advanced configuration parameters such as node groups and load balancing strategies

Protocol transport layer

Support HTTPS encrypted transmission (to prevent configuration information from being tampered with by middlemen)

A timestamp signature can be added (to ensure the timeliness of configuration information)

Client parsing layer

Automatically decode and apply configuration (such as hot update of Clash client configuration files)

Supports scheduled update detection (request the latest configuration every 6 hours by default)

Compared with manual configuration, the core advantage of script address is to achieve configuration version control and multi-device synchronization:

When the node information changes, all subscribed users automatically obtain the latest configuration

Enterprise users can manage proxy policies for thousands of devices through a unified script address

2. Typical application scenarios of script addresses

1. Personal user scenario

Multi-device configuration synchronization

Mobile phones/PCs/tablets share the same subscription link, and node changes take effect in real time

Support cross-platform configuration compatibility (iOS's Shadowrocket and Windows' Clash share the same script address)

Shared Node Management

Family sharing is achieved through permission control (the main account can create a sub-script address to limit the number of available nodes)

Traffic usage statistics visualization (displaying traffic consumption of each device by script address dimension)

2. Enterprise-level application scenarios

Distributed node distribution

Global branches obtain the best local node through regionalized script addresses (based on GeoDNS resolution)

Automatic grayscale release (10% of devices first test the stability of new nodes)

Centralized security policy control

Preset access control list (ACL rules) in script address

Force all endpoints to use a specific encryption protocol (such as WireGuard)

3. Script address generation and parsing process

1. Server-side generation logic

Node information aggregation

Pull node data from multiple vendor APIs (such as V2Ray, Trojan protocol nodes)

Perform deduplication detection (based on IP+port+protocol triple verification)

Configuring template rendering

Use Jinja2 template engine to dynamically generate client-specific configuration

Inject device fingerprint information (such as client type, system version)

Access Control

Generate a time-limited access token based on the HMAC-SHA256 algorithm (valid for 5 minutes)

Implement rate limiting (no more than 3 requests per second from the same IP)

2. Client parsing mechanism

Configuration decoding process

Base64 decoding → JSON parsing → protocol parameter mapping

Exception handling mechanism (automatically retry or roll back to the last available configuration)

Strategy application phase

Intelligent routing rules are matched first (such as domestic direct connection, ad blocking)

Node health check (automatically downgrade nodes with latency > 200ms)

4. Script address management solutions for mainstream proxy tools

Clash Series Clients

Configuration file format: YAML standard

Advanced Features:

Supports merging of multiple subscription sources (automatically removes conflicting nodes)

Regular expression to filter nodes (e.g. only keep nodes with names containing "CN2")

Update strategy: Forced refresh can be triggered via API

Quantumult X (iOS)

Features: Support JavaScript script preprocessing (perform custom filtering before client decoding)

Resource limitation: A single script address can host up to 500 nodes

Compatibility: Can convert subscription link formats of clients such as Surge/Shadowrocket

Surge Mac/Advanced

Enterprise-level features:

Configuration fragment loading (download configuration fragments of different policy groups on demand)

Differential updates (transmit only the changed parts to reduce bandwidth consumption)

Security mechanism: Enforce the script address to enable HTTPS and the certificate to be valid

V2RayN (Windows)

Basic protocol: native support for VMess subscription

Expansion capability: Parsing SSR/Trojan subscription links through plugins

Defect: Unable to automatically merge node lists from multiple feeds

5. Advanced application skills of script addresses

Dynamic load balancing

Embed node weight parameters (such as CPU load, current number of connections) in the configuration returned by the script address

Clients automatically distribute traffic based on weights (weighted round-robin algorithm)

AB Testing Implementation

Returns differentiated configurations for different user groups (e.g. group A uses protocol X, group B uses protocol Y)

Collect connection success rate data to optimize node selection strategy

Automated operation and maintenance integration

Combined with Prometheus monitoring to implement configuration abnormality alarm (such as a sudden increase in node offline rate)

Manage script address changes through GitOps process (audit log + version rollback)

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