---
category: documentation
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# Examples

Examples are available under `examples/internal` directory.
* [`proto/examplepb/echo_service.proto`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/echo_service.proto),
  [`proto/examplepb/a_bit_of_everything.proto`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/a_bit_of_everything.proto),
  [`proto/examplepb/unannotated_echo_service.proto`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/unannotated_echo_service.proto):
  protobuf service definitions.
* [`proto/examplepb/echo_service.pb.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/echo_service.pb.go),
  [`proto/examplepb/a_bit_of_everything.pb.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/a_bit_of_everything.pb.go),
  [`proto/examplepb/unannotated_echo_service.pb.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/unannotated_echo_service.pb.go):
  generated Go service stubs and types.
* [`proto/examplepb/echo_service.pb.gw.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/echo_service.pb.gw.go),
  [`proto/examplepb/a_bit_of_everything.pb.gw.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/a_bit_of_everything.pb.gw.go),
  [`proto/examplepb/uannotated_echo_service.pb.gw.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/uannotated_echo_service.pb.gw.go):
  generated gRPC-gateway clients.
  * [`proto/examplepb/unannotated_echo_service.yaml`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/proto/examplepb/uannotated_echo_service.yaml):
  gRPC API Configuration for `unannotated_echo_service.proto`.
* [`server/main.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/server/main.go):
  service implementation.
* [`main.go`](https://github.com/grpc-ecosystem/grpc-gateway/tree/master/examples/internal/gateway/main.go):
  entrypoint of the generated reverse proxy.

To use the same port for custom HTTP handlers (e.g. serving `swagger.json`),
gRPC-gateway, and a gRPC server, see
[this code example by CoreOS](https://github.com/philips/grpc-gateway-example/blob/master/cmd/serve.go)
(and its accompanying
[blog post](https://coreos.com/blog/grpc-protobufs-swagger.html))