Save WebResponse as txt

Question

I'm looking for a method equivalent to Request.SaveAs in WebResponse. But I can't find it.

I want to store in txt file the headers and the body of a webresponse.

Do you know any technique to achieve it?

what are you trying to do, log all responses from your ASP.NET app ? — Antonio Bakula, Sep 10 '12 at 08:21
I deleted my previous comment, I will connect by WebRequest and use the GetResponse method — Alberto León, Sep 10 '12 at 08:41

sloth · Accepted Answer · 2012-09-10T08:46:33.427

9

There's no builtin way, but you can simply use the GetResponseStream method to get the responce stream and save it to a file.

Example:

WebRequest myRequest = WebRequest.Create("http://www.example.com");
using (WebResponse myResponse = myRequest.GetResponse())
using (StreamReader reader = new StreamReader(myResponse.GetResponseStream()))
{
    // use whatever method you want to save the data to the file...
    File.AppendAllText(filePath, myResponse.Headers.ToString());
    File.AppendAllText(filePath, reader.ReadToEnd());
}

Nonetheless, you can wrap it into an extension method

WebRequest myRequest = WebRequest.Create("http://www.example.com");
using (WebResponse myResponse = myRequest.GetResponse())
{
    myResponse.SaveAs(...)
}

...

public static class WebResponseExtensions
{
    public static void SaveAs(this WebResponse response, string filePath)
    {
        using (StreamReader reader = new StreamReader(response.GetResponseStream()))
        {
            File.AppendAllText(filePath, myResponse.Headers.ToString());
            File.AppendAllText(filePath, reader.ReadToEnd());
        }
    }
}

edited Sep 10 '12 at 08:46

answered Sep 10 '12 at 08:41

sloth

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Is a good way to do it. Why annidate the usings? Should be best run one using and later the second? – Alberto León Sep 10 '12 at 08:43
I think using StringBuilder you gain clearity and only writes one time to disk: `code` StringBuilder sb = new StringBuilder(); sb.Append(response.Headers.ToString()); sb.AppendLine(); sb.Append(responseTxt); File.AppendAllText(filePath, sb.ToString()); `code` – Alberto León Sep 10 '12 at 09:34
Note, this will buffer all the request in memory. You wouldn't be able to download files >512Mb on 32bit OS. And in this case you would "download it to swap first" – bohdan_trotsenko Jun 04 '16 at 21:20
There's a bigger problem with encoding too. – bohdan_trotsenko Jun 04 '16 at 21:20

score 1 · Answer 2 · answered Sep 10 '12 at 08:31

1

WebClient class have ResponseHeaders collection :

http://msdn.microsoft.com/en-us/library/system.net.webclient.responseheaders.aspx

answered Sep 10 '12 at 08:31

Antonio Bakula

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So you suggest make manually this task. Is not any Method or tecnique... Am I wrong? – Alberto León Sep 10 '12 at 08:35
yes, I am not aware of something that will do this automatically, why don't you use WebRequest and WebResponse ? – Antonio Bakula Sep 10 '12 at 08:36
I'm sorry, I'm not using Webclient, I'm using WebRequest and WebResponse. – Alberto León Sep 10 '12 at 08:40

Save WebResponse as txt

2 Answers2

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