c# – 在.Net Core中将Nexmo连接到Websocket失败(远程方关闭了We
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我正在尝试在进行呼入时将Nexmo连接到Web套接字(用户使用nexmo调用已购买的号码并链接到应用程序).
截至目前,我只是尝试这个Sample Code(简单地回复了调用者所说的内容),并按照“文档”Here通过Nexmo连接到这个websocket. 我成功地向nexmo发送了一个动作“connect”.在调用Nexmo购买的号码时,它正确地重定向到端点(api / nexmo / socket),如使用断点时所示,但是当它在Echo方法中到达webSocket.ReceiveAsync时它会挂起. using System;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json.Linq;
namespace MyProject.Web.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class NexmoController : ControllerBase
{
private WebSocket _webSocket;
[HttpGet("answer")]
public IActionResult AnswerHandler()
{
const string host = "MY_NGROK_URL";
const string locale = "fr-FR";
var nccos = new JArray();
var nccoConnect = new JObject()
{
{ "action","connect" },{ "endpoint",new JArray(new JObject{
{ "type","websocket" },{ "uri",$"wss://{host}/api/nexmo/socket"},{ "content-type","audio/l16;rate=16000"},{ "headers",new JObject {
{ "language",locale },{ "callerID","MY_NUMBER_HARDCODED_WHILE_TESTING" }
}
}
})
}
};
nccos.Add(nccoConnect);
return Content(nccos.ToString(),"application/json");
}
[HttpPost("event")]
public IActionResult EventHandler()
{
return Ok();
}
[HttpGet("socket")]
public async Task GetAudio()
{
if (HttpContext.WebSockets.IsWebSocketRequest)
{
_webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
await Echo(HttpContext,_webSocket);
}
else
{
HttpContext.Response.StatusCode = 400;
}
}
//Copy Paste from the Sample Code
private async Task Echo(HttpContext context,WebSocket webSocket)
{
var buffer = new byte[1024 * 4];
//Breakpoint : ReceiveAsync generates an exception
WebSocketReceiveResult result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer),CancellationToken.None);
while (!result.CloseStatus.HasValue)
{
await webSocket.SendAsync(new ArraySegment<byte>(buffer,result.Count),result.MessageType,result.EndOfMessage,CancellationToken.None);
result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer),CancellationToken.None);
}
await webSocket.CloseAsync(result.CloseStatus.Value,result.CloseStatusDescription,CancellationToken.None);
}
}
}
这里捕到的异常：
更多例外：
什么想法发生了什么？或者我如何解决这个问题？ 我还尝试检查Websocket的WebSocketState,并将其设置为“Open”. 解决方法
我们找到了一个解决方案：
> ngrock不支持websockets(不是免费),所以我们在azure上发布了我们的应用程序. 现在一切正常:) 澄清：ngrock不适用于安全的websockets(wss) （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |