unity接入mqtt自救指南

1.环境准备

HslCommunication.dll (版本:11.5.3.0)

Newtonsoft.Json.dll (版本 13.0.1.25517)

dll自取

2.client相关

using UnityEngine;
using HslCommunication.MQTT;
using System.Text;
using System;
using UnityEngine.Networking;
using System.Collections;
using Google.Protobuf;
using Newtonsoft.Json;

public class MqttManager : MonoBehaviour
{
    private MqttClient mqttClient;
    void Start()
    {
        StartCoroutine(Post(OnWebCallback));
    }


    //post 请求 获取mqtt信息 业务相关代码和谐掉了 
    public IEnumerator Post(Action callback)
    {
        // yield return new WaitForSeconds(5f);
        string url = "www.baidu.com";
        var request = new UnityWebRequest(url, "POST");
        string json = "~~~";
        byte[] bodyRaw = new System.Text.UTF8Encoding(true).GetBytes(json);
        request.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw);
        request.downloadHandler = (DownloadHandler)new DownloadHandlerBuffer();
        request.SetRequestHeader("Content-Type", "application/json");

        yield return request.SendWebRequest();

        if (request.result == UnityWebRequest.Result.ConnectionError || request.result == UnityWebRequest.Result.ProtocolError)
        {
            Debug.Log(request.error);
        }
        else
        {
            callback(request.downloadHandler.text);
        }
    }

    private void OnWebCallback(string obj)
    {
        WebLoginData entity = JsonConvert.DeserializeObject(obj);
        mqttClient = new MqttClient(new MqttConnectionOptions()
        {
            ClientId = entity.result.mqttClientId,                     // 客户端的唯一的ID信息
            IpAddress = entity.result.mqttHost,   //"127.0.0.1",              // 服务器的地址
            // Port = 8083,                          // 端口
            UseSSL = false,
            Credentials = new MqttCredential() { UserName = entity.result.mqttUserName, Password = entity.result.mqttPassword },
            CleanSession = true,

        });

        // 连接服务器
        HslCommunication.OperateResult connect = mqttClient.ConnectServer();
        if (connect.IsSuccess)
        {
            // 连接成功
            UnityEngine.Debug.Log("连接成功");
        }
        else
        {
            // 连接失败，过会就需要重新连接了
            UnityEngine.Debug.Log("连接失败");
        }
        // 然后添加订阅
        // HslCommunication.OperateResult sub = mqttClient.SubscribeMessage("test");
        if (sub.IsSuccess)
        {
            // 订阅成功
            UnityEngine.Debug.Log("订阅成功");
        }
        else
        {
            // 订阅失败
            UnityEngine.Debug.Log("订阅失败");
        }
        // 订阅示例
        mqttClient.OnMqttMessageReceived += (MqttClient client, string topic, byte[] payload) =>
        {
            //业务
        };
    }
}

3.server相关

server 我使用的是 mosquitto 

mqtt server 自取

mosquitto：代理器主程序

mosquitto.conf：配置文件

mosquitto_passwd：用户密码管理工具

mosquitto_pub：用于发布消息的命令行客户端

mosquitto_sub：用于订阅消息的命令行客户端

mqtt：MQTT的后台进程

libmosquitto：客户端编译的库文件

参数说明

-c 启动mosquitto可以调整的参数，配置文件
-d 表示MQTT mosquitto将在后台运行。
-p 代表当前的mosquitto服务实例启动以后，其监听端口号
-v 代码调试模式（verbose）

启动服务器 (我在这里使用cmd 调用会报错 后来使用 powershell.exe 调用命令并未报错)

mosquitto -c /etc/mosquitto/mosquitto.conf -d

服务器配置

mosquitto.conf配置文件，1、监听的端口；2、不允许匿名登陆；3、登陆账号信息的文件​​​​​​​

listener 1883
allow_anonymous false
password_file /etc/mosquitto/passwd