本地服务调用遇到的问题

1、我本地起了两个服务8087和8086单独在浏览器是都可以访问

2、在postman中单独调用8087的一个接口没有问题

3、但是在8086服务中调用这个接口http://localhost:8087/api/account/login就会超时

4、如果把这个接口http://localhost:8087/api/account/login换成手动的ip172.16.12.8：再次调用就没有问题

代码：其中_config["AuthServer:Authority"]是另一个服务的地址：localhost:8087

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Security;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace Bridge.Shared.Helper
{
    /// <summary>
    /// HTTP请求工具类
    /// </summary>
    public class HttpRequestHelper
    {
        #region 请求Url

        #region 请求Url，不发送数据
        /// <summary>
        /// 请求Url，不发送数据
        /// </summary>
        public static string RequestUrl(string url)
        {
            return RequestUrl(url, "GET");
        }
        #endregion

        #region 请求Url，不发送数据
        /// <summary>
        /// 请求Url，不发送数据
        /// </summary>
        public static string RequestUrl(string url, string method)
        {
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.Method = method;
            request.ContentType = "text/html";
            request.Headers.Add("charset", "utf-8");

            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream responseStream = response.GetResponseStream();
            StreamReader sr = new StreamReader(responseStream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }
        #endregion

        #region 请求Url，发送数据
        /// <summary>
        /// 请求Url，发送数据
        /// </summary>
        public static string PostUrl(string url, string postData)
        {
            try
            {
                byte[] data = Encoding.UTF8.GetBytes(postData);

                // 设置参数
                HttpWebRequest request = null;
                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                {
                    request = WebRequest.Create(url) as HttpWebRequest;
                    ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                    request.ProtocolVersion = HttpVersion.Version11;
                    // 这里设置了协议类型。
                    ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;// SecurityProtocolType.Tls1.2; 
                    request.KeepAlive = false;
                    request.UserAgent = "";
                    ServicePointManager.CheckCertificateRevocationList = true;
                    ServicePointManager.DefaultConnectionLimit = 100;
                    ServicePointManager.Expect100Continue = false;
                }
                else
                {
                    request = (HttpWebRequest)WebRequest.Create(url);
                }
                CookieContainer cookieContainer = new CookieContainer();
                request.CookieContainer = cookieContainer;
                request.AllowAutoRedirect = true;
                request.Method = "POST";
                request.ContentType = "application/json";
                request.ContentLength = data.Length;
                Stream outstream = request.GetRequestStream();
                outstream.Write(data, 0, data.Length);
                outstream.Close();

                //发送请求并获取相应回应数据
                HttpWebResponse response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序才开始向目标网页发送Post请求
                Stream instream = response.GetResponseStream();
                StreamReader sr = new StreamReader(instream, Encoding.UTF8);
                //返回结果网页（html）代码
                string content = sr.ReadToEnd();
                return content;
            }
            catch (Exception ex)
            {

                throw;
            }

        }

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true; //总是接受  
        }
        #endregion

        #endregion

        #region Http下载文件
        /// <summary>
        /// Http下载文件
        /// </summary>
        public static string HttpDownloadFile(string url, string path)
        {
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream responseStream = response.GetResponseStream();

            //创建本地文件写入流
            Stream stream = new FileStream(path, FileMode.Create);

            byte[] bArr = new byte[1024];
            int size = responseStream.Read(bArr, 0, (int)bArr.Length);
            while (size > 0)
            {
                stream.Write(bArr, 0, size);
                size = responseStream.Read(bArr, 0, (int)bArr.Length);
            }
            stream.Close();
            responseStream.Close();
            return path;
        }
        #endregion

        #region Http上传文件
        /// <summary>
        /// Http上传文件
        /// </summary>
        public static string HttpUploadFile(string url, string path)
        {
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.Method = "POST";
            string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
            request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
            byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");

            int pos = path.LastIndexOf("\\");
            string fileName = path.Substring(pos + 1);

            //请求头部信息
            StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());

            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            byte[] bArr = new byte[fs.Length];
            fs.Read(bArr, 0, bArr.Length);
            fs.Close();

            Stream postStream = request.GetRequestStream();
            postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
            postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
            postStream.Write(bArr, 0, bArr.Length);
            postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            postStream.Close();

            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream instream = response.GetResponseStream();
            StreamReader sr = new StreamReader(instream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }
        #endregion

    }
}