C# - etcd GRPC客户端Basic Auth

Question

我正在尝试实现一个C# GRPC客户端，因为etcd v3+.I可以通过不通过auth和通道ssl auth.However进行连接，我也在尝试找出基本的身份验证机制，下面是我的实现。

using System;
using System.Threading.Tasks;
using System.Collections.Generic;
using Grpc.Core;
using Etcdserverpb;
using Google.Protobuf;
using System.Runtime.CompilerServices;
using Grpc.Auth;
using Grpc.Core.Interceptors;

namespace myproj.etcd
{
    public class EtcdClient
    {       
        Channel channel;
        KV.KVClient kvClient;
        string host;
        string username;
        string password;
        string authToken;
        Auth.AuthClient authClient;

        public EtcdClient(string host, string username, string password)
        {
            this.username = username;
            this.password = password;
            this.host = host;                

             Authenticate();

            // Expirementing with the token, trying to achieve my goal.
            channel = new Channel(host, ChannelCredentials.Create(ChannelCredentials.Insecure,
                                                                GoogleGrpcCredentials.FromAccessToken(this.authToken)));
            // This works.
            //channel = new Channel(host, ChannelCredentials.Insecure);

            kvClient = new KV.KVClient(channel);

        }

        void Authenticate()
        {
            authClient = new Auth.AuthClient(new Channel(host,ChannelCredentials.Insecure));
            var authRes = authClient.Authenticate(new AuthenticateRequest
            {
                Name = username,
                Password = password
            });

            this.authToken = authRes.Token;

        }

        public string Get(string key)
        {
            try
            {
                var rangeRequest = new RangeRequest { Key = ByteString.CopyFromUtf8(key) };
                var rangeResponse = kvClient.Range(rangeRequest);
                if (rangeResponse.Count != 0)
                {
                    return rangeResponse.Kvs[0].Value.ToStringUtf8().Trim();
                }
            }
            catch (Exception ex)
            {

            }
            return String.Empty;
        }

    }
}

使用authenticate()方法，我可以从etcd服务器获得令牌，但无法找到在后续调用(Get、Put等)中使用令牌的方法。

用于生成客户端代码的Protobuf可以找到这里。

更新：，如果有人想看完整的源代码，下面是链接到项目。

Answer 1

我通过引用REST文档这里来解决这个问题。

添加私有财产。

Metadata headers;

更新Autheticate()以添加auth标头。

headers = new Metadata();
headers.Add("Authorization", authToken);

更新Get()以传递标头。

var rangeResponse = kvClient.Range(rangeRequest, headers);