1---
2category: documentation
3---
4
5# Features
6
7## Supported
8* Generating JSON API handlers
9* Method parameters in request body
10* Method parameters in request path
11* Method parameters in query string
12* Enum fields in path parameter (including repeated enum fields).
13* Mapping streaming APIs to newline-delimited JSON streams
14* Mapping HTTP headers with `Grpc-Metadata-` prefix to gRPC metadata (prefixed with `grpcgateway-`)
15* Optionally emitting API definition for [Swagger](http://swagger.io).
16* Setting [gRPC timeouts](https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md) through inbound HTTP `Grpc-Timeout` header.
17* Partial support for [gRPC API Configuration](https://cloud.google.com/endpoints/docs/grpc/grpc-service-config) files as an alternative to annotation.
18
19## Want to support
20But not yet.
21* Optionally generating the entrypoint. #8
22* `import_path` parameter
23
24## No plan to support
25But patch is welcome.
26* Method parameters in HTTP headers
27* Handling trailer metadata
28* Encoding request/response body in XML
29* True bi-directional streaming. (Probably impossible?)
30
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