I have a Base class for Webservice request, my code is working before in my Xamarin Android Application but now I got an error. I already .Dispose() the httpclient after getting the response and also .Disponse() the HttpResponseMessage Variable inside my request function.
NOTE: "https://book.sogohotel.com" is only a dummy domain because I don't want to expose the real IP or Site
I have 2 Async Method.
public async Task GetAvailableRooms(){
await GetToken();
await GetRooms(Token);
}
After getting the token then hitting the GetRoom() I got the Socket Exception
I try to sent requests using POSTMAN but I get the response without ERROR.
System.Net.Sockets.SocketException(0x80004005): No such host is known
at System.Net.Http.ConnectHelper.ConnectAsync(System.String host, System.Int32 port, System.Threading.CancellationToken cancellationToken)[0x000c8] in /Users/builder/jenkins/workspace/archive-mono/2019-08/android/release/external/corefx/src/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/ConnectHelper.cs:65 }
Does anyone encounter this before especially Xamarin Mobile Developer?
Heres my Base class code:
using MyApp.Mobile.Client.APIService.Helper;
using MyApp.Mobile.Client.Common.Constants;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
namespace MyApp.Mobile.Client.APIService.Base
{
public class ApiServiceBase
{
public static string AppBaseAddress = @"https://book.sogohotel.com";
private Uri BaseAddress = new Uri(AppBaseAddress);
public static string AccessToken { get; set; }
public HttpClient httpClient { get; set; }
public ApiServiceBase()
{
this.httpClient = new HttpClient() { BaseAddress = BaseAddress };
this.httpClient.Timeout = TimeSpan.FromSeconds(60);
this.httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
}
/// <summary>
/// GetRequestAsync method handles the Get Request sent to API and returns a type HttpContent.
/// </summary>
/// <param name="requestUri"></param>
/// <returns>HttpContent</returns>
public async Task<HttpContent> GetRequestAsync(string requestUri)
{
HttpResponseMessage requestResponse = new HttpResponseMessage();
try
{
if (!string.IsNullOrEmpty(AccessToken))
{
this.httpClient.DefaultRequestHeaders.Add("x-session-token", AccessToken);
}
requestResponse = await this.httpClient.GetAsync(requestUri);
if (requestResponse.IsSuccessStatusCode)
{
//Dev Hint: This clause statement represents that the Get action has been processed successfully.
}
else if (requestResponse.StatusCode == HttpStatusCode.InternalServerError)
{
//Dev Hint: This clause statement represents that the Get action has encountered InternalServer Error.
}
else if (requestResponse.StatusCode == HttpStatusCode.Unauthorized)
{
//Dev Hint: This clause statement represents that the Get action has encountered Unauthorized Error.
}
}
catch (TaskCanceledException)
{
//Dev Hint: Need to throw or log the encountered TaskCanceledException.
}
catch (HttpRequestException e)
{
throw e.InnerException;
//Dev Hint: Need to throw or log the encountered HttpRequestException.
}
catch (Exception)
{
//Dev Hint: Need to throw or log the encountered General Exception.
}
var content = requestResponse?.Content;
requestResponse.Dispose();
httpClient.Dispose();
return content;
}
public async Task<T> GetRequestWithResponseAsync<T>(string requestUri)
{
try
{
var response = await GetRequestAsync(requestUri);
var responseContent = response.ReadAsStringAsync().Result;
if (response == null)
return default(T);
var responseResult = JsonConvert.DeserializeObject<T>(responseContent);
return responseResult;
}
catch (Exception e)
{
//Dev Hint: Need to throw or log the encountered General Exception.
throw e;
}
}
public async Task<IEnumerable<T>> GetRequestWithResponseListAsync<T>(string requestUri)
{
try
{
var response = await GetRequestAsync(requestUri);
var responseContent = response.ReadAsStringAsync().Result;
if (response == null)
return default(IEnumerable<T>);
var responseResult = JsonConvert.DeserializeObject<IEnumerable<T>>(responseContent);
return responseResult;
}
catch(JsonException je)
{
// JsonConvert.DeserializeObject error
// Dev Hint: Need to throw or log the encountered General Exception.
throw je;
}
catch (Exception e)
{
//Dev Hint: Need to throw or log the encountered General Exception.
throw e;
}
}
/// <summary>
/// PostRequestAsync method handles the Post Request sent to API and returns a type HttpContent.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="requestUri"></param>
/// <param name="content"></param>
/// <returns>HttpContent</returns>
public async Task<HttpContent> PostRequestAsync<T>(string requestUri, T content)
{
string jsonString = string.Empty;
StringContent stringJsonContent = default(StringContent);
HttpResponseMessage requestResponse = new HttpResponseMessage();
try
{
if (!string.IsNullOrEmpty(AccessToken))
{
this.httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", AccessToken);
}
jsonString = JsonConvert.SerializeObject(content);
stringJsonContent = new StringContent(jsonString, Encoding.UTF8, "application/json");
requestResponse = await this.httpClient.PostAsync(requestUri, stringJsonContent);
if (requestResponse.IsSuccessStatusCode)
{
//Dev Hint: This clause statement represents that the Get action has been processed successfully.
}
else if (requestResponse.StatusCode == HttpStatusCode.InternalServerError)
{
//Dev Hint: This clause statement represents that the Get action has encountered InternalServer Error.
}
else if (requestResponse.StatusCode == HttpStatusCode.Unauthorized)
{
//Dev Hint: This clause statement represents that the Get action has encountered Unauthorized Error.
}
}
catch (TaskCanceledException)
{
//Dev Hint: Need to throw or log the encountered TaskCanceledException.
}
catch (HttpRequestException)
{
//Dev Hint: Need to throw or log the encountered HttpRequestException.
}
catch (Exception)
{
//Dev Hint: Need to throw or log the encountered General Exception.
}
var responseContent = requestResponse?.Content;
requestResponse.Dispose();
httpClient.Dispose();
return responseContent;
}
public async Task<string> GetSessionTokenAsync()
{
HttpResponseMessage requestResponse = new HttpResponseMessage();
try
{
requestResponse = await this.httpClient.PostAsync(EndPoints.GetSessionToken, null);
if (requestResponse.IsSuccessStatusCode)
{
//Dev Hint: This clause statement represents that the Get action has been processed successfully.
var result = requestResponse.Headers.GetValues("x-session-token");
return result.FirstOrDefault();
}
else if (requestResponse.StatusCode == HttpStatusCode.InternalServerError)
{
//Dev Hint: This clause statement represents that the Get action has encountered InternalServer Error.
}
else if (requestResponse.StatusCode == HttpStatusCode.Unauthorized)
{
//Dev Hint: This clause statement represents that the Get action has encountered Unauthorized Error.
}
}
catch (TaskCanceledException a)
{
//Dev Hint: Need to throw or log the encountered TaskCanceledException.
}
catch (HttpRequestException b)
{
//Dev Hint: Need to throw or log the encountered HttpRequestException.
}
catch (Exception c)
{
//Dev Hint: Need to throw or log the encountered General Exception.
}
return requestResponse.StatusCode.ToString();
}
}
}
