https - C# DownloadFileTaskAsync not downloading nested zip file -

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please c# newbie,

i'm trying download zipped files https site script task in ssis. each "external" zip file contains "internal" zip file, contains 3 txt files.

after extensive search, i've enhanced downloadfiletaskasync "await", ".wait()" , "while (webclient.isbusy) still manage download empty "external" zip file.

please me find way download full "external" file in way won't empty, contain "internal" zip , 3 txt files inside of it:

    public async void main()     {         webclient webclient = new webclient();         webclient.credentials = new networkcredential("myuser", "password", "https://example.com/login.htm");          webclient.downloadfiletaskasync(new uri("https://example.com/#/fromsender/external_20160706.zip"), @"c:\temp\test\external_20160706.zip").wait();         while (webclient.isbusy) thread.sleep(1000);          dts.taskresult = (int)scriptresults.success;     }

>

try one, add headers webclient:

public async void main() {     webclientex webclient = new webclientex();  // <= use webclientex     webclient.credentials = new networkcredential("myuser", "password", "https://example.com/login.htm");      // add headers here ------------     webclient.headers.add("user-agent", "mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, gecko) chrome/51.0.2704.79 safari/537.36");     webclient.headers.add("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");     webclient.headers.add("accept-language", "en-us,en;q=0.5");     webclient.headers.add("accept-encoding", "gzip, deflate");     webclient.headers.add("cache-control", "max-age=0");     webclient.headers.add("dnt", "1");     //------------------------------      webclient.downloadfiletaskasync(new uri("https://example.com/#/fromsender/external_20160706.zip"), @"c:\temp\test\external_20160706.zip").wait();     while (webclient.isbusy) thread.sleep(1000);      dts.taskresult = (int)scriptresults.success; }

and use class instead of webclient:

public class webclientex : webclient {     protected override webrequest getwebrequest(uri address)     {       var webrequest = (httpwebrequest) base.getwebrequest(address);       if (webrequest != null)       {         webrequest.automaticdecompression = decompressionmethods.gzip | decompressionmethods.deflate;       }       return webrequest;     } }

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