<?xml version="1.0" encoding="utf-8"?>
<!--
  有關(guān)如何配置 ASP.NET 應(yīng)用程序的詳細(xì)信息，請訪問
  https://go.microsoft.com/fwlink/?LinkId=301880
  -->
<configuration>
  <appSettings>
    <add key="webpages:Version" value="3.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
	  <add key="ApiAddress" value="" />
	  <add key="ApiPort" value="45678" />
  </appSettings>
</configuration>

using Microsoft.Owin.Hosting;
using Owin;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;
using Topshelf;
using Topshelf.HostConfigurators;
/*
* Topshelf 是一個開源的跨平臺的宿主服務(wù)框架，支持 Windows 和 Mono，只需要幾行代碼就可以構(gòu)建一個很方便使用的服務(wù)宿主。
* 使用 Topshelf 可以非常方便的將一個 C# 控制臺程序部署成為一個 Windows Service, 使用它可以很方便的構(gòu)建跨平臺服務(wù)寄主，
* 而在調(diào)試時直接以控制臺的形式運(yùn)行即可，非常方便。
* Owin框架
* OWIN 允許 Web 應(yīng)用從 Web 服務(wù)器分離。 它定義了在管道中使用中間件來處理請求和相關(guān)響應(yīng)的標(biāo)準(zhǔn)方法。 
* WebAPI應(yīng)用程序和中間件可以與基于 OWIN 的應(yīng)用程序、服務(wù)器和中間件進(jìn)行互操作。
*/
 
namespace BridgeApi
{
    public class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("WebAPI程序啟動開始...");
            HostFactory.Run(new Action<HostConfigurator>(HostConf));
            Console.ReadLine();
        }
 
        public static void HostConf(HostConfigurator hostConfigurator)
        {
            // 服務(wù)使用NETWORK_SERVICE內(nèi)置帳戶運(yùn)行。身份標(biāo)識，有好幾種方式，如：x.RunAs("username", "password");  x.RunAsPrompt(); x.RunAsNetworkService(); 等
            hostConfigurator.RunAsLocalService();//以服務(wù)
            //x.StartAutomatically();//StartModeExtensions
            //x.StartManually();//手動模式
 
            hostConfigurator.SetDescription("WebAPIServer 斯內(nèi)科 Topshelf Host服務(wù)的描述"); //安裝服務(wù)后，服務(wù)的描述
            hostConfigurator.SetDisplayName("WebAPIServerSnake"); //顯示名稱
            hostConfigurator.SetServiceName("WebAPIServerSnake"); //服務(wù)名稱
            Type t = hostConfigurator.GetType();//Topshelf.HostConfigurators.HostConfiguratorImpl
            Console.WriteLine(t.ToString());
 
            hostConfigurator.Service<TownCrier>(s =>
            {
                s.ConstructUsing(name => new TownCrier());     //配置一個完全定制的服務(wù),對Topshelf沒有依賴關(guān)系。常用的方式。
                                                               //the start and stop methods for the service
                s.WhenStarted(tc => tc.Start());              //4
                s.WhenStopped(tc => tc.Stop());
            });
        }        
    }
 
    public class TownCrier
    {
        public TownCrier()
        {
        }
        public void Start()
        {
            Task.Factory.StartNew(() =>
            {
                bool IsStarted = false;
                while (!IsStarted)
                {
                    try
                    {
 
                        string log = "服務(wù)啟動成功。";
                        string urlKey = "ApiAddress";
                        string portKey = "ApiPort";
                        if (!ConfigurationManager.AppSettings.AllKeys.Contains(urlKey))
                        {
                            log = $"服務(wù)啟動出現(xiàn)異常：App.config文件中不存在配置[{urlKey}]";
                            Console.WriteLine(log);
                            return;
                        }
                        if (!ConfigurationManager.AppSettings.AllKeys.Contains(portKey))
                        {
                            log = $"服務(wù)啟動出現(xiàn)異常：App.config文件中不存在配置[{portKey}]";
                            Console.WriteLine(log);
                            return;
                        }
                        string apiUrl = ConfigurationManager.AppSettings[urlKey].ToString();
                        string apiPort = ConfigurationManager.AppSettings[portKey].ToString();
                        bool rtn = int.TryParse(apiPort, out int port);
                        if (!rtn)
                        {
                            log = $"服務(wù)啟動出現(xiàn)異常：App.config文件中配置[{portKey}]值錯誤";
                            Console.WriteLine(log);
                            return;
                        }
                        StartOptions options = new StartOptions();
                        //options.Urls.Add($"http://localhost:{apiPort}");
                        options.Urls.Add($"http://127.0.0.1:{apiPort}");
                        //options.Urls.Add($"http://{Environment.MachineName}:{apiPort}");
                        if (!string.IsNullOrEmpty(apiUrl))
                        {
                            options.Urls.Add($"http://{apiUrl}:{apiPort}");
                        }
                        else
                        {
                            #region //自動綁定所有IP
                            string hostName = Dns.GetHostName();
                            IPAddress[] iPAddresses = Dns.GetHostAddresses(hostName);
                            foreach (IPAddress ipAddress in iPAddresses)
                            {
                                //IPv4
                                if (ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                                {
                                    options.Urls.Add($"http://{ipAddress}:{apiPort}");
                                }
                            }
                            #endregion
                        }
                        
                        string urls = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(options.Urls);
                        log = $"開始啟動服務(wù)，服務(wù)地址：{urls}";
                        Console.WriteLine(log);
 
                        //OWIN 托管服務(wù)器問題:StartOptions WebApp.Start TargetInvocationException
                        // Start OWIN host ,啟動一個webapi程序
                        //  public static IDisposable Start(string url, Action<IAppBuilder> startup);
 
                        WebApp.Start(options, startup: Configuration);
                        Console.WriteLine($"服務(wù)啟動成功。");
                        IsStarted = true;
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine($"服務(wù)啟動出現(xiàn)異常：{ex.Message}");
                        Thread.Sleep(2000);
                    }
                }
            });
        }
        public void Stop()
        {
            Console.WriteLine($"WebApi服務(wù)退出");
        }
 
        public void Configuration(IAppBuilder appBuilder)
        {
            // Configure Web API for self-host. 
            HttpConfiguration config = new HttpConfiguration();
            config.MapHttpAttributeRoutes();
            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "{controller}/{action}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
            appBuilder.UseWebApi(config);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
 
namespace BridgeApi
{
    [RoutePrefix("Bridge")]
    public class BridgeController : ApiController
    {
        /// <summary>
        /// 測試API端口,假設(shè)傳入一個json字符串{"TestName":"斯內(nèi)科"}
        /// 請求路由Url不區(qū)分大小寫
        /// http://127.0.0.1:45678/Bridge/testApi
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        [Route("TestApi")]
        [HttpPost]
        public HttpResponseMessage TestApi(object objText) 
        {
            try
            {
                Microsoft.Owin.OwinContext context = ((Microsoft.Owin.OwinContext)Request.Properties["MS_OwinContext"]);
                string RemoteClient = context.Request.RemoteIpAddress + ":" + context.Request.RemotePort;
                if (objText == null)
                {
                    string returnDataNG = Newtonsoft.Json.JsonConvert.SerializeObject(new ResponseContent()
                    {
                        Code = 12345,
                        Message = $"解析失敗，請求參數(shù)為空，源文本【{objText}】"
                    });
                    return new HttpResponseMessage()
                    {
                        Content = new StringContent(returnDataNG, System.Text.Encoding.UTF8, mediaType: "application/json")
                    };
                }
                string json = objText.ToString();
                TestClass testClass = Newtonsoft.Json.JsonConvert.DeserializeObject<TestClass>(json);
                if (testClass == null || string.IsNullOrEmpty(testClass.TestName))
                {
                    string returnDataNG = Newtonsoft.Json.JsonConvert.SerializeObject(new ResponseContent()
                    {
                        Code = 12345,
                        Message = $"解析失敗，TestName為空，源json【{json}】"
                    });
                    return new HttpResponseMessage()
                    {
                        Content = new StringContent(returnDataNG, System.Text.Encoding.UTF8, mediaType: "application/json")
                    };
                }
                string returnData = Newtonsoft.Json.JsonConvert.SerializeObject(new ResponseContent()
                {
                    Code = 0,
                    Message = "",
                    Data = $"接收到【{RemoteClient}】上拋數(shù)據(jù)【{json}】，已處理OK，返回一個隨機(jī)數(shù)【{new Random().Next(1, 100)}】"
                });
                return new HttpResponseMessage()
                {
                    Content = new StringContent(returnData, System.Text.Encoding.UTF8, mediaType: "application/json")
                };
            }
            catch (Exception ex) 
            {
                string returnDataNG = Newtonsoft.Json.JsonConvert.SerializeObject(new ResponseContent()
                {
                    Code = -1,
                    Message = $"處理時出現(xiàn)錯誤【{ex.Message}】"
                });
                return new HttpResponseMessage()
                {
                    Content = new StringContent(returnDataNG, System.Text.Encoding.UTF8, mediaType: "application/json"),
                    StatusCode = HttpStatusCode.BadRequest
                };
            }
        }
    }
 
    public class TestClass
    {
        public string TestName { get; set; }
    }
 
    /// <summary>
    /// 接口反饋的響應(yīng)內(nèi)容對象
    /// </summary>
    public class ResponseContent 
    {
        /// <summary>
        /// 錯誤號，code為0代表OK
        /// </summary>
        public int Code { get; set; }
        /// <summary>
        /// 錯誤描述，Code為0，這里顯示空
        /// </summary>
        public string Message { get; set; }
        /// <summary>
        /// 相關(guān)數(shù)據(jù)信息，該Data可以是數(shù)組、鍵值對字典、字符串等任意類型數(shù)據(jù)
        /// </summary>
        public object Data { get; set; }
    }
}