HTTP filters

The API for HTTP level filters allows the filters to operate without knowledge of the underlying protocol. Like network level filters, HTTP filters can stop and continue iteration to subsequent filters. This allows for more complex scenarios such as health check handling, calling a rate limiting service, buffering, routing, generating statistics for application traffic such as DynamoDB, etc. HTTP level filters can also share state (static and dynamic) among themselves within the context of a single request stream. Refer to data sharing between filters for more details. Envoy already includes several HTTP level filters that are documented in this architecture overview as well as the .