Hello,

since update from 4.9.40 to version 5.5.0 FTP connection via HTTP-Proxy does not work anymore. Error message: (No such host is know)

"Unhandled FTP login error: System.Net.Sockets.SocketException: No such host is known
at System.Net.Dns.GetAddrInfo(String name)
at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
at System.Net.Dns.GetHostEntry(String hostNameOrAddress)
at SBSocket.__Global.ResolveHostName(String Address, Boolean UseIPv6)
at SBSocket.TElSocket.AsyncConnect(Int32 Timeout)
at SBSocket.TElSocket.Connect(Int32 Timeout)
at SBSimpleFTPS.TElSimpleFTPSClient.ConnectViaProxy()
at SBSimpleFTPS.TElSimpleFTPSClient.Open()
at OBOKIIHBDBPMCFALPGECCIFHCDJPEDKODDGK.OBNIPPAGHDDHPOBHOGBJLEANJJPFMKFFKJEF.JDBIEFJDGLPICBBAHNBGLAMEELCOMLELLFNE(ConnectionClass , Boolean )"

is received. It seems that VC is not using the proxy!
Please help.

Regards.
Peter

Seems like a DNS resolution error rather than proxy error. Are you using an IP on the proxy settings?

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I tried hostname and ip for the proxy setting aswell as for the ftp-server. At all cases it is not connecting! With VC 4.9.40 there is no problem connecting the ftp-server.

Thanks, we are investigating this and will soon come back with some result.

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Please try this version and see if it works better for you - please come back with result. Thanks.

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Thanks, for your quick respsonse.
Now i can logon, but i can not download anything:

250 CWD command successful.

TYPE A
200 Type set to A.

PASV
227 Entering Passive Mode (xxx,xxx,xxx,xxx,118,43).

LIST
425 Can't open data connection.

I tried "Use proxy for data-channel" switch on / off in Proxy-Settings. "Data Connection Type" is set to PASV, the encryption options are not checked.
At VC 49.40 the "Data Connection Type" is also set to PASV and transfer is working.

PS: The "Explorer" feature in connection settings is still not working (error msg: no such host)

We are still investigating this and will get back to you.

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Please let us know which proxy server you are using.

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We use NetCache v6.0.5 as HTTP Proxy.

Please this version which has exposed some new settings:


1. Check "Use proxy for data channel" in proxy settings
2. Uncheck "Automatically adjust passive..." in Extra settings of the connection

Please let us know if this works better.

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Now downloading through our proxy is working.

Thanks for the feedback.

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