index > Network Class Library (System.Net) > How to set encoding of the send data of an HttpWebRequest

How to set encoding of the send data of an HttpWebRequest

result = file_get_contents(
 mosms_url
 + "?username=" + mosms_username
 + "&password=" + mosms_password
 + "&type=" + "text"
 + "&nr=" + m_View.PhoneNr
 + "&data=" + mosms_data
);
private String file_get_contents(String url)
{
 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url) ;
 WebResponse response = request.GetResponse();
 Stream stream = response.GetResponseStream();
 StreamReader streamReader = new StreamReader(stream);
 string responseText = streamReader.ReadToEnd();
 streamReader.Close();
 stream.Close();
 response.Close();
 return responseText;
}
//Tried with these lines without success.
request.SendChunked = true;
request.TransferEncoding = "ISO-8859-1";

One part of my application connects to an sms/text-service.
You provide a few variables, send the data over a HttpWebRequest and get a responseif it was a successful sending.
The messages are sent with encoding ISO 8859-1 and it is what I have a problem with since I dont exactly know how to provide this encoding to them.
I have tried to set the encoding as the last two lines in the code block, but that failed.
When calling response.GetResponseStream();
I got an exception that complained about SendChunked has to be true although I had set that property.
I feel that I am missing something essential, any help is highly appreciated.sandsater

Mattias Sandsäter

I laborated with that without any success.
However, I realized that the only thing I had to do to get it work was

Encoding enc = Encoding.GetEncoding("ISO-8859-1");
String encData = HttpUtility.UrlEncode(sms_data, enc);

So now it works with all kinds of characters in the message.

sandsater

Proposed As Answer byTratcherMSFTWednesday, September 02, 2009 5:17 PM
Marked As Answer byReymarx GeredaMSFT, OwnerWednesday, September 02, 2009 10:09 PM

Mattias Sandsäter

From looking at your code, it seems that you are posting the data as Query parameters of the URL. In that case, TransferEncoding & SendChunked are not needed.

These are only needed if you are sending data in the entity body, and need to specify a transfer encoding.

If you had to send data in entity body, you can encode it with ISO-8859-1 as follows:

Encoding enc = Encoding.GetEncoding("ISO-8859-1");
int index = url.IndexOf("?");
byte [] body = null;
if (index != -1)
{
    String query = url.Substring(index);
    body = enc.GetBytes(query);
}

Stream requestStream = request.GetRequestStream();
requestStream.Write(body, 0, body.Length);
requestStream.Close();

HttpWebResponse response = ...

feroze
--
My blog

Feroze Daud

I laborated with that without any success.
However, I realized that the only thing I had to do to get it work was

Encoding enc = Encoding.GetEncoding("ISO-8859-1");
String encData = HttpUtility.UrlEncode(sms_data, enc);

So now it works with all kinds of characters in the message.

sandsater

Proposed As Answer byTratcherMSFTWednesday, September 02, 2009 5:17 PM
Marked As Answer byReymarx GeredaMSFT, OwnerWednesday, September 02, 2009 10:09 PM

Mattias Sandsäter

You can use google to search for other answers

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