How to log request inputstream with HttpModule, then reset InputStream position

user_21966 0
Viewed 19031

I am trying to log the contents of an http request, using an IHttpModule like so:

public class LoggingModule : IHttpModule
{
    public void Init(HttpApplication context)
    {
        context.BeginRequest += ContextBeginRequest;
    }

    private void ContextBeginRequest(object sender, EventArgs e)
    {
        var request = ((HttpApplication)sender).Request;
        string content;

        using (var reader = new StreamReader(request.InputStream))
        {
            content = reader.ReadToEnd();
        }

        LogRequest(content)
    }
}

The problem is that after reading the input stream to the end, the InputStream seems to have either disappeared or more likely, the cursor is at the end of the stream.

I have tried request.InputStream.Position = 0; and request.InputStream.Seek(0, SeekOrigin.Begin); but neither work.

inputstream httpmodule .net
6 Answers

Yes the StreamReader will close the supplied stream.

If you're on >v4.5, use a StreamReader constructor that leaves the stream open.

using (var reader = new StreamReader(request.InputStream, Encoding.UTF8, true, 1024, true))
{
    content = reader.ReadToEnd();
}
Ivan_Hamilton_47290

this answer did not work. it returns an array that contains null values.

        var bytes = new byte[request.InputStream.Length];
        request.InputStream.Read(bytes, 0, bytes.Length);
        request.InputStream.Position = 0;
        string content = Encoding.ASCII.GetString(bytes);

because the input stream consumed.

user_2593320
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