smsapi/NativeHttpClientHelper.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Collections.Specialized;
   4 using System.IO;
   5 using System.Linq;
   6 using System.Net.Http;
   7 using System.Threading;
   8 using System.Threading.Tasks;
   9
  10 namespace SMSApi.Api
  11 {
  12     public static class NativeHttpClientHelper
  13     {
  14         public static async Task<HttpResponseEntity> SendRequest(
  15             this HttpClient httpClient,
  16             RequestMethod method,
  17             string uri,
  18             NameValueCollection body = null,
  19             Dictionary<string, Stream> files = null,
  20             CancellationToken cancellationToken = default
  21         )
  22         {
  23             HttpContent httpContent;
  24
  25             switch (method)
  26             {
  27                 case RequestMethod.GET:
  28                     var getResponse = await httpClient.GetAsync(uri, cancellationToken);
  29
  30                     return new HttpResponseEntity(getResponse.Content.ReadAsStreamAsync(), getResponse.StatusCode);
  31                 case RequestMethod.POST:
  32                     httpContent = ConvertNameValueCollectionToHttpContent(body, files);
  33                     var postResponse = await httpClient.PostAsync(uri, httpContent, cancellationToken);
  34
  35                     return new HttpResponseEntity(postResponse.Content.ReadAsStreamAsync(), postResponse.StatusCode);
  36                 case RequestMethod.PUT:
  37                     httpContent = ConvertNameValueCollectionToHttpContent(body, files);
  38                     var putResponse = await httpClient.PutAsync(uri, httpContent, cancellationToken);
  39
  40                     return new HttpResponseEntity(putResponse.Content.ReadAsStreamAsync(), putResponse.StatusCode);
  41                 case RequestMethod.DELETE:
  42                     var deleteResult = await httpClient.DeleteAsync(uri, cancellationToken);
  43
  44                     return new HttpResponseEntity(deleteResult.Content.ReadAsStreamAsync(), deleteResult.StatusCode);
  45                 default:
  46                     throw new ArgumentOutOfRangeException(nameof(method), method, null);
  47             }
  48         }
  49
  50         private static HttpContent ConvertNameValueCollectionToHttpContent(
  51             NameValueCollection collection,
  52             Dictionary<string, Stream> files = null
  53         )
  54         {
  55             var contentCollectionKeys = collection.AllKeys;
  56
  57             var contentCollection = contentCollectionKeys
  58                 .Select(key => new KeyValuePair<string, string>(key, collection[key]))
  59                 .ToList();
  60             var formUrlEncodedContent = new FormUrlEncodedContent(contentCollection);
  61
  62             if (files == null) return formUrlEncodedContent;
  63
  64             var multipartContent = new MultipartFormDataContent();
  65
  66             foreach (var keyValuePair in contentCollection)
  67                 multipartContent.Add(new StringContent(keyValuePair.Value), keyValuePair.Key);
  68
  69             files
  70                 .ToList()
  71                 .ForEach(pair => multipartContent.Add(new StreamContent(pair.Value), "file", pair.Key));
  72
  73             return multipartContent;
  74         }
  75     }
  76 }