HttpClient(C#)

Web系を開発していると動作をトレースするためにHttpクライアントが必要な場合があります。

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using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace HttpClientSim
{

    class HttpClientSim
    {
        public static HttpResponseMessage PostJson(string url, Dictionary<string, string> headers, Dictionary<string, string> querys,string json, ProxyInfo info)
        {
            HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, url);

            // request header

            foreach (KeyValuePair<string, string> pair in headers)
            {
                req.Headers.Add(pair.Key, pair.Value);
            }

            // query string

            Uri uri = null;

            if (querys != null)
            {
                var query = HttpUtility.ParseQueryString("");

                foreach (KeyValuePair<string, string> pair in querys)
                {
                    query.Add(pair.Key, pair.Value);
                }

                var builder = new UriBuilder(url);
                builder.Query = query.ToString();
                uri = builder.Uri;
            }
            else
            {
                var builder = new UriBuilder(url);
                uri = builder.Uri;
            }

            // json content

            if (json == null) json = "";

            StringContent jsonContent = new StringContent(json, Encoding.UTF8, "application/json");

            using (HttpClientHandler handler = new HttpClientHandler())
            {

                // no verify

                handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) =>
                {
                    return true;
                };

                // proxy

                if (info != null)
                {
                    handler.Proxy = new WebProxy(info.Url);
                    handler.Credentials = new NetworkCredential(info.Id, info.Pass);
                    handler.UseProxy = true;
                }

                // request

                using (HttpClient client = new HttpClient(handler))
                {
                    Task task = client.PostAsync(uri, jsonContent);

                    return task.Result;
                }
            }
        }


        public static HttpResponseMessage Post(string url, Dictionary<string, string> headers, Dictionary<string, string> querys, Dictionary<string, string> bodys, ProxyInfo info)
        {
            HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, url);

            // request header

            foreach (KeyValuePair<string, string> pair in headers)
            {
                req.Headers.Add(pair.Key, pair.Value);
            }

            // query string

            Uri uri = null;

            if (querys != null)
            {
                var query = HttpUtility.ParseQueryString("");

                foreach (KeyValuePair<string, string> pair in querys)
                {
                    query.Add(pair.Key, pair.Value);
                }

                var builder = new UriBuilder(url);
                builder.Query = query.ToString();
                uri = builder.Uri;
            }
            else
            {
                var builder = new UriBuilder(url);
                uri = builder.Uri;
            }

            // body content

            if (bodys == null) bodys = new Dictionary<string, string>();

            var formContent = new FormUrlEncodedContent(bodys);

            using (HttpClientHandler handler = new HttpClientHandler())
            {

                // no verify

                handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) =>
                {
                    return true;
                };

                // proxy

                if (info != null)
                {
                    handler.Proxy = new WebProxy(info.Url);
                    handler.Credentials = new NetworkCredential(info.Id, info.Pass);
                    handler.UseProxy = true;
                }

                // request

                using (HttpClient client = new HttpClient(handler))
                {
                    Task task = client.PostAsync(uri, formContent);

                    return task.Result;
                }
            }
        }
    }


    class ProxyInfo
    {
        public string Url { get; }

        public string Id { get; }

        public string Pass { get; }

        public ProxyInfo(string url,string id,string pass)
        {
            if(url == null || id == null || pass == null)
            {
                throw new ArgumentException("引数不正");
            }

            this.Url = url;
            this.Id = id;
            this.Pass = pass;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            string url = "http://localhost:3000/aa";
            var bodys = "{\"aa\":\"bbbbb\",\"dddsa\":\"deee\"}";

            var qs = new Dictionary<string, string>();
            qs.Add("ffff", "ggg g");

            var res = HttpClientSim.PostJson(url, new Dictionary<string, string>(), qs, bodys, null);

            Console.WriteLine(res.StatusCode);
        }
    }
}

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