WebSocket在Asp.Net中的例子

WebSocket在Asp.Net中的例子可以通过以下代码实现：

1. 在Asp.Net项目中添加Microsoft.AspNet.WebSockets NuGet包。

2. 在Global.asax.cs文件中添加以下代码：

protected void Application_Start(object sender, EventArgs e)
{
RouteTable.Routes.MapHttpRoute(
name: "WebSocket",
routeTemplate: "ws",
defaults: new { controller = "WebSocket" }
);
}

3. 创建WebSocketController类，并添加以下代码：

public class WebSocketController : ApiController
{
public HttpResponseMessage Get()
{
if (HttpContext.Current.IsWebSocketRequest)
{
HttpContext.Current.AcceptWebSocketRequest(ProcessWebSocketRequest);
}
return new HttpResponseMessage(HttpStatusCode.SwitchingProtocols);
}

private async Task ProcessWebSocketRequest(AspNetWebSocketContext context)
{
var socket = context.WebSocket;
while (true)
{
var buffer = new ArraySegment<byte>(new byte[1024]);
var result = await socket.ReceiveAsync(buffer, CancellationToken.None);
if (socket.State == WebSocketState.Open)
{
var message = Encoding.UTF8.GetString(buffer.Array, buffer.Offset, result.Count);
var response = string.Format("You sent: {0}", message);
buffer = new ArraySegment<byte>(Encoding.UTF8.GetBytes(response));
await socket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
}
else
{
break;
}
}
}
}

4. 在浏览器中打开WebSocket连接，例如：ws://localhost:port/ws。

以上就是WebSocket在Asp.Net中的例子。