c# - 无法侦听前缀“http://localhost:5041/”，因为它与机器上的现有注册冲突

问题描述

我的助手类，我使用 HttpListener 创建一个带有 HttpListenerRequest 的 HttpListenerResponse。但是当运行测试它有一个错误“无法监听前缀' http://localhost:5041/ '因为它与机器上的现有注册冲突”每个人都有这个问题请帮助我。谢谢。我的助手类：使用 Microsoft.Extensions.Logging；使用系统；使用 System.Net；使用 System.IO；使用 System.Net.Sockets；使用 System.Text；使用 System.Collections.Generic；

namespace ApiBusinesslogicTest
{
public class MockHttpResponseHelper
{
    private readonly ILogger _logger;
    HttpListener _listener;
    int requestIndex = 0;
    Dictionary<int, HttpStatusCode> dHttpStatus; Dictionary<int, 
MemoryStream> dResponseObject; Dictionary<int, StringBuilder> 
dRequestData;
    public MockHttpResponseHelper(ILogger logger)
    {
        this._logger = logger;
    }

    public WebResponse CreateWebResponse(String prefix, 
Dictionary<int, HttpStatusCode> dHttpStatus, Dictionary<int, 
MemoryStream> dResponseObject, Dictionary<int, StringBuilder> 
dRequestData)
    {
        this.dRequestData = dRequestData;
        this.dResponseObject = dResponseObject;
        this.dHttpStatus = dHttpStatus;
        TcpListener l = new TcpListener(IPAddress.Loopback, 0);
        l.Start();
        int port = ((IPEndPoint)l.LocalEndpoint).Port;
        l.Stop();

        // Create a listener.
        // string prefix = endPoint;
        _listener = new HttpListener();
        _listener.Prefixes.Add(prefix);

        _listener.Start();
        try
        {
            _listener.BeginGetContext(new 
AsyncCallback(clientConnect), _listener);
        }
    catch (Exception e)
    {
        _logger.LogWarning(e.StackTrace);
    }

    return null;
}

public void stop()
{
    _listener.Stop();
    _listener.Close();
}

public void clientConnect(IAsyncResult ar)
{
    if (!_listener.IsListening) return;

    HttpListenerContext context = _listener.EndGetContext(ar);

    //_listener.BeginGetContext(clientConnect, _listener);
    HttpListenerRequest request = context.Request;

    if (!request.HasEntityBody)
    {
        _logger.LogTrace("No client data was sent with the 
request.");
        return;
    }
    System.IO.Stream body = request.InputStream;
    System.Text.Encoding encoding = request.ContentEncoding;
    System.IO.StreamReader reader = new System.IO.StreamReader(body, 
encoding);
    if (request.ContentType != null)
    {
        _logger.LogTrace("Client data content type {0}", 
request.ContentType);
    }
    _logger.LogTrace("Client data content length {0}", 
request.ContentLength64);

    _logger.LogTrace("Start of client data:");
    // Convert the data to a string and display it on the console.
    string s = reader.ReadToEnd();
    dRequestData[requestIndex].Append(s);
    _logger.LogTrace(s);
    _logger.LogTrace("End of client data:");
    body.Close();
    reader.Close();

    // Obtain a response object.
    HttpListenerResponse response = context.Response;

    response.StatusCode = (int)dHttpStatus[requestIndex];

    // Construct a response.
    if (dResponseObject != null)
    {
        byte[] buffer = dResponseObject[requestIndex].ToArray();

        // Get a response stream and write the response to it.
        Stream output = response.OutputStream;
        output.Write(buffer, 0, buffer.Length);
        try
        {
            output.Flush();
            output.Close();
            response.Close();
        }
        finally
        {

            requestIndex++;
            _listener.BeginGetContext(new 
AsyncCallback(clientConnect), _listener);
        }
    }
}
}
}

标签： c#.net-core

c# - 无法侦听前缀“http://localhost:5041/”，因为它与机器上的现有注册冲突

问题描述

解决方案

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