mvc 用websocket连接不上的错误原因！

admin · 发表于 2016-5-5 15:22:45

WebSocket connection to 'ws://localhost:3558/api/Chat' failed: Error during WebSocket handshake: Unexpected response code: 404

js报错！！！！！

前台页面：

@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<scrip{过滤}t src="/scrip{过滤}t/jquery-1.12.3.min.js"></scrip{过滤}t>
<scrip{过滤}t type="text/javascrip{过滤}t">
var ws;
$(
function () {
$("#btnConnect").click(function () {
$("#messageSpan").text("Connection...");
ws = new WebSocket("ws://" + window.locatio{过滤}n.hostname +":"+window.locatio{过滤}n.port+ "/api/Chat");
ws.onopen = function () {
$("#messageSpan").text("Connected!");
};
ws.onmessage = function (result) {
$("#messageSpan").text(result.data);
};
ws.onerror = function (error) {
$("#messageSpan").text(error.data);
};
ws.onclose = function () {
$("#messageSpan").text("Disconnected!");
};
});
$("#btnSend").click(function () {
if (ws.readyState == WebSocket.OPEN) {
ws.send($("#txtInput").val());
}
else {
$("messageSpan").text("Connection is Closed!");
}
});
$("#btnDisconnect").click(function () {
ws.close();
});
}
);
</scrip{过滤}t>
<fieldset>
<input type="button" value="Connect" id="btnConnect" />
<input type="button" value="DisConnect" id="btnDisConnect" />
<hr />
<input type="text" id="txtInput" />
<input type="button" value="Send" id="btnSend" />
<br />
<span id="messageSpan" style="color:red;"></span>
</fieldset>
</body>
</html>

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后台代码：

using System;
using System.Net;
using System.Net.Http;
using System.Net.WebSockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;
using System.Web.WebSockets;
namespace ChatRoom.WebUI.Controllers
{
public class ChatController : ApiController
{
public HttpResponseMessage Get()
{
if (HttpContext.Current.IsWebSocketRequest)
{
HttpContext.Current.AcceptWebSocketRequest(ProcessWSChat);
}
return new HttpResponseMessage(HttpStatusCode.SwitchingProtocols);
}
private async Task ProcessWSChat(AspNetWebSocketContext arg)
{
WebSocket socket = arg.WebSocket;
while (true)
{
ArraySegment<byte> buffer = new ArraySegment<byte>(new byte[1024]);
WebSocketReceiveResult result = await socket.ReceiveAsync(buffer, CancellationToken.None);
if (socket.State == WebSocketState.Open)
{
string message = Encoding.UTF8.GetString(buffer.Array, 0, result.Count);
string returnMessage = "You send :" + message + ". at" + DateTime.Now.ToLongTimeString();
buffer = new ArraySegment<byte>(Encoding.UTF8.GetBytes(returnMessage));
await socket.SendAsync(buffer, WebSocketMessageType.Text, true, CancellationToken.None);
}
else
{
break;
}
}
}
}
}

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按理说，应该没错啊！！！！！！！！！

最后，发现是我设置Global.asax中Application_Start顺序的错误，真是日了狗了，下面是正确顺序！！

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[ASP.NET] mvc 用websocket连接不上的错误原因！