WebClient FTP / 502错误

Question

我收到一个502错误，应该是一个简单的请求。

WebClient webClient = new WebClient();
SourceURL = string.Format(@"ftp://{0}/{1}", "ftp.cmegroup.com", "settle/nymex_option.csv"); //used field names ... but these are the values
webclient.Credentials = new NetworkCredential(@"anonymous", @"anonymous@anonymous.com");
webClient.DownloadFile(new Uri(SourceURL), "c:\temp\temp.dat");

我通过fiddler捕获了传出请求，该请求在原始检查器中如下所示：

GET ftp://anonymous:anonymous%40anonymous.com@ftp.cmegroup.com/settle/nymex_option.csv HTTP/1.1
Host: ftp.cmegroup.com
Proxy-Connection: Keep-Alive

寻找从哪里开始找出到底是怎么回事的想法.

Answer 1

如果您的GET中有%40，则应该是a：

option.csv

或

option.csv