I finally dug up the obscure command from MSDN that fixes this: ServicePointManager.DnsRefreshTimeout = 0; As I unwound all the weird things I’d tried previously, I discovered one other setting that I need along with the one above; on the request object, turn off keep-alive: request.KeepAlive = false;
::1 is the loopback address in IPv6. Think of it as the IPv6 version of 127.0.0.1. See http://en.wikipedia.org/wiki/Localhost
The page you’re trying to download as a string is encoded using charset=EUC-JP, also known as Japanese (EUC) (CodePage 51932). This is clearly set in the page headers. Why is the string returned by WebClient.DownloadString encoded using the wrong encoder? The MSDN Docs state this: This method retrieves the specified resource. After it downloads the … Read more
Using .NET 4.5 (or .NET 4.0 by adding the Microsoft.Net.Http package from NuGet) there is an easier way to simulate form requests. Here is an example: private async Task<System.IO.Stream> Upload(string actionUrl, string paramString, Stream paramFileStream, byte [] paramFileBytes) { HttpContent stringContent = new StringContent(paramString); HttpContent fileStreamContent = new StreamContent(paramFileStream); HttpContent bytesContent = new ByteArrayContent(paramFileBytes); using … Read more