Edge Security Acceleration (ESA) provides features such as network access optimization, IPv6 support, as well as WebSocket and gRPC connections to optimize cross-region network performance and user experience.
Features overview
IPv6 is introduced to solve IPv4 address exhaustion. Edge Security Acceleration (ESA) enables the IPv6 feature for all websites free of charge. You can use IPv4 or IPv6 addresses to access networks. After you enable IPv6, IPv6 clients can access ESA over IPv6. When ESA accesses the origin server, ESA carries the IPv6 information.
If you want your origin server to allow WebSocket requests whose URLs begin with
ws://orwss://, you can use the WebSocket feature on Edge Security Acceleration (ESA). With this feature enabled (which it is by default), ESA can communicate with the origin server over the WebSocket protocol to transmit and update data in real time.gRPC is an open source high performance Remote Procedure Call (RPC) framework. gRPC on Edge Security Acceleration (ESA) is developed based on TLS and HTTP/2. Using the protocol buffers (Protobuf) messaging format to serialize structured data, gRPC can connect services across languages and platforms and allows you to request a service from a remote server the same way you request an on-premises application. gRPC can also help users reduce bandwidth usage and network latency.
If you enable this switch, ESA retrieves content from the origin server with the custom header ali-ip-country included. This header specifies the geographical location of the client.
Add the ali-real-client-ip header
If you enable Add "ali-real-client-ip" Header, ESA includes the custom header ali-real-client-ip in origin requests to specify the real client IP addresses.
The maximum upload size feature can be used to specify the maximum size of data that users can upload in a single request. This feature provides a tool for administrators to limit the size of files to be uploaded, improving server performance and reducing operational costs.