brokersrv is a transparent gateway on top of JSON-RPC 2.0 server that's passes RPC requests to NATS JetStream server. It uses zenrpc package for processing RPC requests.

1. Configure brokersrv via TOML configuration and run it.
2. Send RPC request to brokersrv.
3. Use github.com/vmkteam/brokersrv/pkg/rpcqueue package in your RPC server for pulling RPC requests from NATS JetStream server.

• testsrv test rpc server with zenrpc package as RPC server listen on localhost:8080/rpc/.
• NATS JetStream server listen on localhost:4222.
• brokersrv with following configuration:

[Server]
Host    = "localhost"
Port    = 8071

[NATS]
URL = "nats://localhost:4222"

[Settings]
RpcServices = [ "testsrv" ]

...

import (
    "github.com/vmkteam/brokersrv/pkg/rpcqueue"
)

...

nc, err := rpcqueue.NewClient("nats://localhost:4222", "testsrv")

...

rpcQueue := rpcqueue.New("testsrv", nc.JetStreamConn, zenrpcSrv, someLoggerPrintF)
go rpcQueue.Run()

Just send RPC request to localhost:8071/rpc/testsrv/ via Postman/curl. This request will pass into NATS JetStream server. After that rpcQueue in testsrv will fetch this request from NATS JetStream server and pass it to own RPC server.