我在便携式类库中使用HttpClient获得403

我有一个PCL，WP和WinStore项目。 在PCL项目中，我有一个使用此方法的类：

private async Task GetIpAddress() { const string url = "http://www.ip-adress.com/"; const string buscar = "
Your IP address is:"; var client = new HttpClient(); var data = await client.GetStringAsync(url); if (data.IndexOf(buscar, StringComparison.Ordinal) <= -1) return; var IpAddress = data.Remove(0, data.IndexOf(buscar, StringComparison.Ordinal) + buscar.Length + 1); IpAddress = IpAddress.Remove(IpAddress.IndexOf("
", StringComparison.Ordinal)); return IpAddress; } 

当我在Windows Phone项目上调用该方法时，工作完美，但不在Windowsapp store项目中。 相反，我收到此错误消息：

Answer 1

看来你需要凭据并指向api，这就是为什么它的“Forbiden”

尝试像浏览器一样调用它：从另一个问题“ HttpClient请求像浏览器 ”

 void Main() { GetIP("http://www.ip-adress.com/"); } async void GetIP(string url){ try{ "Looking Up".Dump("OK"); var x = await GetResponse(url); x.Dump(); } catch(Exception e){ e.Dump("Problems:"); } } private static async Task GetResponse(string url) { var httpClient = new HttpClient(); httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml"); httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate"); httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"); httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1"); var response = await httpClient.GetAsync(new Uri(url)); response.EnsureSuccessStatusCode(); using (var responseStream = await response.Content.ReadAsStreamAsync()) //using (var decompressedStream = new System.IO.Compression.GZipStream(responseStream, CompressionMode.Decompress)) using (var streamReader = new StreamReader(responseStream)) { return streamReader.ReadToEnd(); } } 

//注意：我评论了压缩，