[http call] api call

[Alice52]

core: so can get request detail by fiddler

1. URI: may lead to 404 http code
2. Header: may lead to 400 http code
3. Method: may lead to 405 http code
4. Body: may lead to 400 http code

this issue is trace Http Call processor and method

1. HttpClient, can using Named Client

   • 404:

     • this URI is specify, it's BaseAddress must be endwith /
     • and relative uri must not be start with /

   • 400

     • DateTime is strange in .net framework, it must be formatted like this /Date(12346464)/
     • so must SerializeObject by DateFormatHandling.MicrosoftDateFormat

   • 500

     • can call target service success, but service error

   • sample

   // startip.cs
   services.AddHttpClient(ClientsConstants.TABLE_SERVICE_CLIENT, client =>
   {
       client.BaseAddress = new Uri(TableServiceConfig.GetSection("BaseUrl").Value);
       // this will get Misused header name error
       // client.DefaultRequestHeaders.Add(RequestHeaders.CONTENT_TYPE, RequestHeaders.JSON_CONTENT);
       client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
       client.Timeout = TimeSpan.FromMilliseconds(Convert.ToInt32(TableServiceConfig.GetSection("Timeout").Value));
   });
   
   // service class
   var jsonBody = JsonUtil.SerializeObject(new AutoRollRequestBody(tableId, gamingDay), DateFormatHandling.MicrosoftDateFormat);
   
   var client = _clientFactory.CreateClient(ClientsConstants.TABLE_SERVICE_CLIENT);
   StringContent content = new StringContent(jsonBody);
   content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
   var response = client.PostAsync(ServiceURLConstants.TABLE_SERVICE_PATH, content).Result;
   
   response.EnsureSuccessStatusCode();
   return JsonUtil.DeserializeObject<ReceiveTableInventory>(response.Content.ReadAsStringAsync().Result);

2. RestClient: same issue with HttpClient

   • request body: addJsonBody()

   • sample

   public static IRestResponse Post(string requestPath, int timeout, object jsonBody, IDictionary<string, string> headerParams, string clientPath)
   {
       var request = new RestRequest(requestPath, Method.POST) { Timeout = timeout };
       request.AddHeader(RequestHeaders.CONTENT_TYPE, RequestHeaders.JSON_CONTENT);
       request.RequestFormat = DataFormat.Json;
   
       if (headerParams != null && headerParams.Count > 0)
       {
           foreach (string key in headerParams.Keys)
           {
               request.AddHeader(key, headerParams[key]);
           }
       }
   
       if (jsonBody != null)
       {
           request.AddJsonBody(jsonBody);
       }
       var client = new RestClient(clientPath);
       return client.Execute(request);
   }

---

reference

1. https://d-fens.ch/2014/04/12/httpclient-and-how-to-use-headers-content-type-and-postasync/
2. https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-requests?view=aspnetcore-2.2

[Alice52]

8