http请求端口占用异常——处理思路

解决思路:

1.  ESTABLISHED 过多,使用static解决

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static HttpClientHandler StaticHttpClientHandler = new HttpClientHandler
 {
     AllowAutoRedirect = true,
     Proxy = new System.Net.WebProxy(ConfigHelper.FacebookProxyHostUrl)
 };
 
 static HttpClient StaticHttpClient = new HttpClient(StaticHttpClientHandler, false)
 {
     Timeout = TimeSpan.FromSeconds(10)
 };
 
 [HttpGet]
 [Route(nameof(TestProxy))]
 public async Task<bool> TestProxy()
 {
     string siteUrl = "https://www.google.com";
     var httpClient = StaticHttpClient;
     var requestMessage = new HttpRequestMessage
     {
         Method = HttpMethod.Get,
         RequestUri = new Uri(siteUrl, UriKind.Absolute),
     };
     var result =await httpClient.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead);
     result.EnsureSuccessStatusCode();
     return true;
 }

  

2.方案1导致ESTABLISHED 控制住,但是CLOSE_WAIT太多,使用IHttpClientFactory解决

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    //Startup.cs中的public void ConfigureServices(IServiceCollection services)
    services.AddHttpClient();
    services.AddHttpClient("configured-proxy-handler")
    .ConfigurePrimaryHttpMessageHandler(() =>
    {
        return new HttpClientHandler()
        {
            AllowAutoRedirect = true,
            Proxy = new System.Net.WebProxy(ConfigHelper.FacebookProxyHostUrl)
        };
    });   
 
 
  
//使用
private readonly IHttpClientFactory _httpClientFactory;
public OpsController(IHttpClientFactory httpClientFactory)
{
    _httpClientFactory = httpClientFactory;
}
 
[HttpGet]
[Route(nameof(TestProxy3))]
public async Task<bool> TestProxy3()
{
    string siteUrl = "https://www.google.com";
    var httpClient = _httpClientFactory.CreateClient("configured-proxy-handler");
    httpClient.Timeout = TimeSpan.FromSeconds(10);
    try
    {
        var requestMessage = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri(siteUrl, UriKind.Absolute),
        };
        var result = await httpClient.GetAsync(siteUrl, HttpCompletionOption.ResponseHeadersRead);
        result.EnsureSuccessStatusCode();
        return true;
    }catch(Exception ex)
    {
        return false;
    }
}

  

posted @   PanPan003  阅读(945)  评论(0编辑  收藏  举报
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