Awesome

grpcbin

httpbin like for gRPC

Links

• Servers
  • insecure gRPC (over HTTP, without TLS): grpc://grpcb.in:9000
  • secure gRPC (with let's encrypt TLS): grpc://grpcb.in:443 and grpc://grpcb.in:9001
  • webserver: https://grpcb.in
• Services
  • grpcbin.proto
  • hello.proto
  • addsvc.proto
• Examples
  • multiple languages: https://github.com/moul/grpcbin-example
  • haskell: https://github.com/lucasdicioccio/http2-client-grpc-example/

Run server locally

$ docker run -it --rm -p 9000:9000 -p 9001:9001 moul/grpcbin
2017/12/18 14:48:01 listening on :9000 (insecure)
2017/12/18 14:48:01 listening on :9001 (secure)

Example

See examples on a the dedicated repo: grpcbin-example

Golang

package main

import (
	"fmt"
	"log"

	"golang.org/x/net/context"
	"google.golang.org/grpc"

	pb "github.com/moul/pb/grpcbin/go-grpc"
)

func main() {
	// dial
	conn, _ := grpc.Dial("grpcb.in:9000", grpc.WithInsecure())
	defer conn.Close()

	// create client and context
	client := pb.NewGRPCBinClient(conn)
	ctx := context.Background()

	// call DummyUnary
	res, err := client.DummyUnary(ctx, &pb.DummyMessage{
		FString: "hello",
		FInt32:  42,
	})
	if err != nil {
		log.Fatalf("failed to call DummyUnary: %v", err)
	}
	fmt.Println(res)
}

Example with grpcc:

# fetch proto and install tool
$ wget -qN https://github.com/moul/pb/raw/master/grpcbin/grpcbin.proto
$ npm install -g grpcc

# interactive client
$ grpcc -i -p ./grpcbin.proto --address grpcb.in:9000
Connecting to grpcbin.GRPCBin on grpcb.in:9000. Available globals:

  client - the client connection to GRPCBin
    index (EmptyMessage, callback) returns IndexReply
    dummyUnary (DummyMessage, callback) returns DummyMessage
    dummyServerStream (DummyMessage, callback) returns DummyMessage
    dummyClientStream (DummyMessage, callback) returns DummyMessage
    dummyBidirectionalStreamStream (DummyMessage, callback) returns DummyMessage

  printReply - function to easily print a unary call reply (alias: pr)
  streamReply - function to easily print stream call replies (alias: sr)
  createMetadata - convert JS objects into grpc metadata instances (alias: cm)

GRPCBin@grpcb.in:9000> ^C

# call index endpoint
$ grpcc -i -p ./grpcbin.proto --address grpcb.in:9000 --eval 'client.index({}, printReply)'
{
  "description": "gRPC testing server",
  "endpoints": [
    {
      "path": "index",
      "description": "This endpoint."
    },
    {
      "path": "dummyUnary",
      "description": "Unary endpoint that replies a received DummyMessage."
    },
    [...]
  ]
}

# call dummyUnary with arguments
$ grpcc -i -p ./grpcbin.proto --address grpcb.in:9000 --eval 'client.dummyUnary({f_string:"hello",f_int32:42}, printReply)'
{
  "f_string": "hello",
  "f_strings": [],
  "f_int32": 42,
  "f_int32s": [],
  "f_enum": "ENUM_0",
  "f_enums": [],
  "f_sub": null,
  "f_subs": [],
  "f_bool": false,
  "f_bools": [],
  "f_int64": "0",
  "f_int64s": [],
  "f_bytes": {
    "type": "Buffer",
    "data": []
  },
  "f_bytess": [],
  "f_float": 0,
  "f_floats": []
}