Using chirpstack-api/protobuf/as/external/api to add 10 thousnds device with Java for performance testing

ChirpStack Application Server
1

Hi there,

I am trying to using chirpstack-api/protobuf/as/external/api to add 10 thousands device with java for performance testing. The first step to add ServiceProfile first, but could not make it happen. Here is what I am doing below, any suggestion are welcome

  1. create Java codes with proto files in chirpstack-api/protobuf/as/external/api

  2. create TLS priavet key and certificaiton file with chirpstack-certificates repository files

  3. Configure tls_key in Chirpstack-Application-Server.toml file below
    [application_server.external_api]

    ip:port to bind the (user facing) http server to (web-interface and REST / gRPC api)

    bind=“0.0.0.0:8080”

    http server TLS certificate (optional)

    #tls_cert="/home/dou/brocaar/loraserver/private/server.crt"
    tls_cert=""

    http server TLS key (optional)

    tls_key="/home/dou/brocaar/chirpstack-certificates/certs/lora-app-server/api/server/lora-app-server-api-server-key.pem"
    #tls_key=""

  4. Using below codes try to add Service Profile first
    public static void main( String[] args )
    {

    ManagedChannel channel = null;
    try {

       String key = "E:\\\\projects\\\\IoT\\\\tls-files\\\\lora-app-server-api-client-key.pem";
   
   SslContext sslContext = buildSslContext(null, null, key); 
   channel = NettyChannelBuilder.forAddress("192.168.3.73", 8080)
   		.negotiationType(NegotiationType.TLS)
   		.sslContext(sslContext)
   		.build();  
   

   ServiceProfile.Builder serviceProfileBuilder = ServiceProfile.newBuilder();
   serviceProfileBuilder.setName("PT-CN470")
   .setNetworkServerId(NetworkID);
   
   ServiceProfile srvProfile = serviceProfileBuilder.build();    	
   
   CreateServiceProfileRequest srvProfileReq = CreateServiceProfileRequest
   		.newBuilder()
   		.setServiceProfile(srvProfile)
   		.build();
   ServiceProfileServiceGrpc.ServiceProfileServiceBlockingStub srvStub = ServiceProfileServiceGrpc.newBlockingStub(channel);
   api.ServiceProfile.CreateServiceProfileResponse srvProfileRsp = srvStub.create(srvProfileReq);
   
   System.out.println("Create Device Profile succesfully");

    }catch(Exception e) {
    e.printStackTrace();
    }
    }

But alwasy got exception below:
Caused by: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 485454502f312e31203430302042616420526571756573740d0a436f6e74656e742d547970653a20746578742f706c61696e3b20636861727365743d7574662d380d0a436f6e6e656374696f6e3a20636c6f73650d0a0d0a343030204261642052657175657374

Not sure if I did something wrong, any suggestion are appreciated.

Thansk,
-Anfeng