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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Docs Overview/
Edge Acceleration/
Edge DNS/
Origin Configuration/
Origin-pull configuration/
HTTP/2 Origin-Pull/

HTTP/2 Origin-Pull

Overview

Support EdgeOne nodes to origin-pull using HTTP/2 protocol. HTTP/2 (i.e., HTTP 2.0, Hypertext Transfer Protocol version 2) is the second major version of the HTTP protocol, which can effectively reduce network latency and improve site page loading speed.
Note：
1. When enabled, the origin must support HTTP/2 protocol access.
2. If you need to configure HTTP/2 access, please refer to HTTP/2.

Use Limits

When HTTP/2 origin-pull is enabled and the origin-pull protocol is set to Follow Protocol, if a client sends an HTTP request, the EdgeOne node will perform origin-pull using H2C. However, if the origin server does not support H2C, the origin-pull will fail.
Therefore, if your current origin server does not support H2C and the origin-pull protocol is set to Follow Protocol, to reduce the risk of origin-pull failure, we recommend keeping HTTP/2 origin-pull disabled for the site/domain name.
If your origin-pull protocol is HTTPS, it will not be affected.
Note:
H2C is an unencrypted version of HTTP/2, where C stands for clear text, namely plaintext. HTTP/2 is the second major version of the HTTP protocol, with significant performance improvements including multiplexing of requests and responses, reduced latency, optimized data flow, and header compression. However, the HTTP/2 protocol is typically used over secure HTTPS, requiring encryption by TLS (Transport Layer Security Protocol), while H2C allows the use of HTTP/2 without encryption, enabling performance benefits of HTTP/2 when encryption is not needed or cannot be used. Therefore, EdgeOne uses H2C for origin-pull when HTTP/2 origin-pull is enabled and HTTP is used for origin-pull.

Directions

If you need to enable or disable HTTP/2 origin-pull for the specified domain www.example.com, you can follow the steps below:
1. Log in to the EdgeOne console, click Site List in the left sidebar, and then click the site you want to configure in the site list.
2. On the site details page, click Site Acceleration to enter the global configuration page. Then click the Rule Engine tab.
3. On the rule engine page, click Create rule and select Add blank rule.
4. On the rule editing page, select the matching type as HOST equals www.example.com.
5. Click the Action, and in the pop-up operation list, select the operation as HTTP/2 origin-pull.Click the switch to enable/disable HTTP/2 origin-pull.

6. Click Save and Publish to complete the rule configuration.