Edge Acceleration

Site Acceleration
- Overview
- Quickly Import and Export Site Configuration
- Access Control
  - Token Authentication
- Smart Acceleration
- File Optimization
  - Smart Compression
- Network Optimization
  - HTTP/2
  - HTTP/3(QUIC)
    - Overview
    - Enable HTTP/3
    - QUIC SDK
      - SDK Overview
      - SDK Download and Integration
      - Sample Code
        Android
        iOS
      - API Documentation
        Android
        iOS
  - IPv6 Access
  - Maximum Upload Size
  - WebSocket
  - Client IP Geolocation Header
  - Client IP Geographical Location
  - gRPC
- URL Rewrite
  - Access URL Redirection
  - Origin-Pull URL Rewrite
- Modifying Header
  - Modifying HTTP Response Headers
  - Modifying HTTP Request Headers
- Custom Error Page
- Request and Response Actions
  - Processing order
  - Default HTTP Headers of Origin-Pull Requests
  - Default HTTP Response Headers
- Media Services
  - Audio and Video Pre-pulling
  - Just-in-Time Image Processing
  - Just-in-Time Media Processing
  - VOD Media Origin
L4 Proxy
- Overview
- Creating an L4 Proxy Instance
- Modifying an L4 Proxy Instance
- Disabling or Deleting an L4 Proxy Instance
- Batch Configuring Forwarding Rules
- Obtaining Real Client IPs
  - Obtaining Real TCP Client IPs via TOA
  - Obtaining Real Client IPs Through Protocol V1/V2
    - Overview
    - Method 1: Obtaining Real Client IPs Through Nginx
    - Method 2: Parsing Real Client IPs on Application Server
    - Format of Real Client IPs Obtained Through Proxy Protocol V1/V2
  - Transmitting Client Real IP via SPP Protocol
Edge DNS
- Hosting DNS Records
  - Modifying DNS Servers
  - Configuring DNS Records
  - Advanced DNS Configuration
- Domain Connection
  - Adding A Domain Name for Acceleration
  - Ownership Verification
  - Modifying CNAME Records
- Domain alias
  - Overview
  - Configuration Guide
  - Batch Connecting SaaS Domain Names
  - Configuring Alias Domain Names for Disaster Recovery
- Traffic Scheduling
  - Traffic Scheduling Management
- Origin Configuration
  - Origin-pull configuration
    - Configuring Origin-Pull HTTPS
    - Host Header Rewrite
    - Controlling Origin-pull Requests
    - Redirect Following During Origin-Pull
    - HTTP/2 Origin-Pull
    - Range GETs
  - Load Balancing
    - Overview
    - Quickly Create Load Balancers
    - Health Check Policies
    - Viewing the Health Status of Origin Server
    - Related References
      - Load Balancing-Related Concepts
      - Introduction to Request Retry Strategy
  - Origin Group Configuration
  - Related References
    - ld Version Origin Group Compatible Related Issues
  - Collect EdgeOne origin-pull node IP
Edge Cache
- Overview
- EdgeOne Cache Rules
  - Content Cache Rules
  - Cache Key Introduction
  - Vary Feature
- Cache Configuration
  - Custom Cache Key
  - Node Cache TTL
  - Status Code Cache TTL
  - Browser Cache TTL
  - Offline Caching
  - Cache Prefresh
- Clear and Preheat Cach
  - Cache Purge
  - URL Pre-Warming
- How to improve the Cache Hit Rate of EdgeOne
Rules Engine
- Overview
- Supported Matching Types and Actions
- Rule Management
- variables

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Overview

This document describes how to obtain real client IPs through Proxy Protocol V1/V2 when you enable the L4 proxy acceleration.
Note:
The L4 proxy is only available with the Enterprise Edition package.
Scenarios
When the datagrams are accelerated through L4 acceleration connection, you can pass the real client IPs and Ports to the origin server through Proxy Protocol V1/V2. For introduction on the protocol, see Proxy Protocol V1/V2.
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The origin can parse and obtain real client IPs with two methods based on the scenarios and deployment modes.
Method 1: If the TCP protocol is used on the origin, it is recommended to add a Nginx server that supports Proxy Protocol V1/V2 in front of the application server. For details, see Obtaining Real Client IPs Through Nginx.
Method 2: If the UDP protocol is used on the origin, or if you want to directly parse the real client IPs under the TCP protocol on the application server, you can parse the Proxy Protocol field on the application server by referring to the sample code in the Proxy Protocol. For details, see Parsing Real Client IPs on Application Server.
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Scenarios