测量互联网速度而不保存远程文件

Question

I am writing an internet speed measurer. I want to measure internet speed without saving remote file to either file or memory - I need fetch the data and forget it, so it seems that WebClient and StreamReader is not good for it (maybe i should inherit them and override some private methods). How to make it?

Answer 1

I think that when writing such a system you should also select exactly which size of file you want to download. Anyway, you can maybe download parts of the file if the "very large" or "infinite" size is a problem. You can maybe use HttpWebRequest.AddRange http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.addrange.aspx

Answer 2

You can use System.Net.WebRequest to measure the throughput, using asynchronous calls to capture the data as it is being read.

The MSDN example code for WebRequest.BeginGetResponse shows one method for using the asynchronous methods to read the data from a remote file as it is being received. The example stores the response data in a StringBuilder , but you can skip that since you're not actually interested in the data itself.

I added some timing code to their example and tested it against a couple of large file downloads, seems to do the job you need it for.