System.Net.WebClient unreasonably slow

by

I had that problem with WebRequest. Try setting Proxy = null;

    WebClient wc = new WebClient();
    wc.Proxy = null;

By default WebClient, WebRequest try to determine what proxy to use from IE settings, sometimes it results in like 5 sec delay before the actual request is sent.

This applies to all classes that use WebRequest, including WCF services with HTTP binding.
In general you can use this static code at application startup:

WebRequest.DefaultWebProxy = null;

More Related Contents:

  1. Best way to reverse a string
  2. String vs. StringBuilder
  3. How slow are .NET exceptions?
  4. How to get object size in memory? [duplicate]
  5. Benchmarking small code samples in C#, can this implementation be improved?
  6. Does C# optimize the concatenation of string literals?
  7. Is String.Contains() faster than String.IndexOf()?
  8. LINQ: Not Any vs All Don’t
  9. What is the real overhead of try/catch in C#?
  10. String interning in .Net Framework – What are the benefits and when to use interning
  11. Why is LINQ .Where(predicate).First() faster than .First(predicate)?
  12. C# / F# Performance comparison
  13. How does extern work in C#?
  14. How performant is StackFrame?
  15. How to force a number to be in a range in C#? [duplicate]
  16. Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
  17. Performance of Find() vs. FirstOrDefault() [duplicate]
  18. Does String.GetHashCode consider the full string or only part of it?
  19. How do I measure how long a function is running?
  20. Warm-up when calling methods in C#
  21. LINQ performance FAQ
  22. Is it better to execute many sql commands with one connection, or reconnect every time?
  23. Why is my C# program faster in a profiler?
  24. When to use pointers in C#/.NET?
  25. When to change the Generate Serialization Assembly value?
  26. Slow SoapHttpClientProtocol constructor
  27. Getting the location from a WebClient on a HTTP 302 Redirect?
  28. Does any one know of a faster method to do String.Split()?
  29. Heap versus Stack allocation implications (.NET)
  30. Why subsequent direct method call is much faster than the first call?

Leave a Comment