前言

分两个项目，一个Gatway，一个SignalR

贴代码

1、Gatway

1、引用Ocelot

2、添加一点点代码

Startup.cs

1556437515322

3、简单配置ocelot

ocelot.json

{
  "ReRoutes": [
    {
      "DownstreamPathTemplate": "/{catchAll}", //下游路径
      "DownstreamScheme": "ws", //https  //下游协议
      "DownstreamHostAndPorts": [ // 下游主机及端口
        {
          "Host": "127.0.0.1",	// 这里是我后面signalr地址
          "Port": 53353
        },
        {
          "Host": "127.0.0.1",
          "Port": 53354
        },
        {
          "Host": "127.0.0.1",
          "Port": 53355
        }
      ],
      "UpstreamPathTemplate": "/gateway/{catchAll}", // 上游路径
      "UpstreamHttpMethod": [ "GET", "POST", "PUT", "DELETE", "OPTIONS" ], //上游使用的http方法
      "LoadBalancerOptions": {
        "Type": "RoundRobin" //雨露均沾
        //LeastConnection 任务少的接客
        //NoLoadBalance 天将降大任于斯人也
      }
    }
  ],
  "GlobalConfiguration": {  //全局配置
    "BaseUrl": "http://127.0.0.1:5000"
  }
}

2、signalr

1、Startup.cs

1556438762257

2、chat.js

//const connection = new signalR.HubConnectionBuilder()
//    .withUrl("http://127.0.0.1:5000/gateway/chatHub")  // 这里使用http
//    .configureLogging(signalR.LogLevel.Information)
//    .build();

const connection = new signalR.HubConnectionBuilder()
    .withUrl("ws://127.0.0.1:5000/gateway/chatHub", {   // 这里使用WebSockets，不这样写连不上的
        skipNegotiation: true,
        transport: signalR.HttpTransportType.WebSockets
    })
    .configureLogging(signalR.LogLevel.Trace)
    .build();

connection.on("ReceiveMessage", (user, message) => {
    const encodedMsg = user + " says " + message;
    const li = document.createElement("li");
    li.textContent = encodedMsg;
    document.getElementById("messagesList").appendChild(li);
});

document.getElementById("sendButton").addEventListener("click", event => {
    const user = document.getElementById("userInput").value;
    const message = document.getElementById("messageInput").value;
    connection.invoke("SendMessage", user, message).catch(err => console.error(err.toString()));
    event.preventDefault();
});

connection.start().catch(err => console.error(err.toString()));

3、Program.cs

1556439019364