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c#web-serviceswindows-8windows-phoneportable-class-library

I'm getting 403 with HttpClient on Portable Class Library


I have a PCL, WP and WinStore projects. In the PCL project I have a class with this method:

    private async Task<string> GetIpAddress()
    {
        const string url = "http://www.ip-adress.com/";
        const string buscar = "<h3>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("</h3>", StringComparison.Ordinal));
        return IpAddress;
    }

When I invoke the method on the Windows Phone project works perfectly, but not in the Windows Store project. Instead, I'm getting this error message:

Message 403


Solution

  • It seems you need credentials and to point at the api instead , that's why its "Forbiden"

    Try calling it like a browser : from this other question "HttpClient Request like browser"

    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<string> 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();
        }
    }
    

    //Note :I commented out the compression,