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using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
namespace DracWake.Core
{
public class WebClient : IWebClient
{
private readonly CookieContainer _cookies = new CookieContainer();
private HttpWebRequest CreateRequest(Uri uri)
{
var request = HttpWebRequest.CreateHttp(uri);
request.AllowAutoRedirect = false;
request.CookieContainer = _cookies;
SetHeaders(request);
var defaultValidator = System.Net.ServicePointManager.ServerCertificateValidationCallback;
request.ServerCertificateValidationCallback =
(sender, certificate, chain, sslPolicyErrors) =>
certificate.Subject.Contains("O=DO_NOT_TRUST, OU=Created by http://www.fiddler2.com")
|| (certificate.Subject == "CN=DRAC5 default certificate, OU=Remote Access Group, O=Dell Inc., L=Round Rock, S=Texas, C=US")
|| (defaultValidator != null && defaultValidator(request, certificate, chain, sslPolicyErrors));
return request;
}
private async Task<string> DecodeResponse(HttpWebResponse response)
{
foreach (System.Net.Cookie cookie in response.Cookies)
{
_cookies.Add(new Uri(response.ResponseUri.GetLeftPart(UriPartial.Authority)), cookie);
}
if (response.StatusCode == HttpStatusCode.Redirect)
{
var location = response.Headers[HttpResponseHeader.Location];
if (!string.IsNullOrEmpty(location))
return await Get(new Uri(location));
}
var stream = response.GetResponseStream();
var buffer = new System.IO.MemoryStream();
var block = new byte[65536];
var blockLength = 0;
do{
blockLength = stream.Read(block, 0, block.Length);
buffer.Write(block, 0, blockLength);
}
while(blockLength == block.Length);
return Encoding.UTF8.GetString(buffer.GetBuffer());
}
public async Task<string> Get(Uri uri)
{
var request = CreateRequest(uri);
var response = (HttpWebResponse) await request.GetResponseAsync();
return await DecodeResponse(response);
}
private void SetHeaders(HttpWebRequest request)
{
request.Accept = "text/html, application/xhtml+xml, */*";
request.UserAgent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)";
request.ContentType = "application/x-www-form-urlencoded";
request.Headers[HttpRequestHeader.AcceptLanguage] = "en-US,en;q=0.8,de-DE;q=0.5,de;q=0.3";
request.Headers[HttpRequestHeader.AcceptEncoding] = "gzip, deflate";
request.Headers[HttpRequestHeader.CacheControl] = "no-cache";
}
public async Task<string> Post(Uri uri, byte[] data)
{
var request = CreateRequest(uri);
request.Method = "POST";
request.GetRequestStream().Write(data, 0, data.Length);
var response = (HttpWebResponse) await request.GetResponseAsync();
return await DecodeResponse(response);
}
}
}