Alex Rivera | Logout

Encoding trouble with HttpWebResponse

Asked 2008-10-22T21:17:05.373
29

Here is a snippet of the code :

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(request.RawUrl);
WebRequest.DefaultWebProxy = null;//Ensure that we will not loop by going again in the proxy
HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
string charSet = response.CharacterSet;
Encoding encoding;
if (String.IsNullOrEmpty(charSet))
encoding = Encoding.Default;
else
encoding = Encoding.GetEncoding(charSet);

StreamReader resStream = new StreamReader(response.GetResponseStream(), encoding);
return resStream.ReadToEnd();

The problem is if I test with : http://www.google.fr

All "é" are not displaying well. I have try to change ASCII to UTF8 and it still display wrong. I have tested the html file in a browser and the browser display the html text well so I am pretty sure the problem is in the method I use to download the html file.

What should I change?

removed dead ImageShack link

Update 1: Code and test file changed

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1 Answer

17

In case you don't want to download the page twice, I slightly modified Alex's code using How do I put a WebResponse into a memory stream?. Here's the result

public static string DownloadString(string address)
{
    string strWebPage = "";
    // create request
    System.Net.WebRequest objRequest = System.Net.HttpWebRequest.Create(address);
    // get response
    System.Net.HttpWebResponse objResponse;
    objResponse = (System.Net.HttpWebResponse)objRequest.GetResponse();
    // get correct charset and encoding from the server's header
    string Charset = objResponse.CharacterSet;
    Encoding encoding = Encoding.GetEncoding(Charset);

    // read response into memory stream
    MemoryStream memoryStream;
    using (Stream responseStream = objResponse.GetResponseStream())
    {
        memoryStream = new MemoryStream();

        byte[] buffer = new byte[1024];
        int byteCount;
        do
        {
            byteCount = responseStream.Read(buffer, 0, buffer.Length);
            memoryStream.Write(buffer, 0, byteCount);
        } while (byteCount > 0);
    }

    // set stream position to beginning
    memoryStream.Seek(0, SeekOrigin.Begin);

    StreamReader sr = new StreamReader(memoryStream, encoding);
    strWebPage = sr.ReadToEnd();

    // Check real charset meta-tag in HTML
    int CharsetStart = strWebPage.IndexOf("charset=");
    if (CharsetStart > 0)
    {
        CharsetStart += 8;
        int CharsetEnd = strWebPage.IndexOfAny(new[] { ' ', '\"', ';' }, CharsetStart);
        string RealCharset =
               strWebPage.Substring(CharsetStart, CharsetEnd - CharsetStart);

        // real charset meta-tag in HTML differs from supplied server header???
        if (RealCharset != Charset)
        {
            // get correct encoding
            Encoding CorrectEncoding = Encoding.GetEncoding(RealCharset);

            
answered 2012-03-23T15:25:53.323

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