BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  IdFTP1->List problem          BorlandTalk.com Forum Index -> C++ Builder (Internet Socket) View previous topic :: View next topic   Author Message David Ayre Guest Posted: Wed Feb 14, 2007 7:18 pm    Post subject: IdFTP1->List problem Hi, I am using Indy 9 with BDS 2006 but have found a problem with the ftp module when I use IdFTP1->List(SL,"",false); If there is nothing in the folder it crashes. What can I do to avoid this? Cheers, David Back to top Remy Lebeau (TeamB) Guest Posted: Thu Feb 15, 2007 12:02 am    Post subject: Re: IdFTP1->List problem "David Ayre" <davidcayre (AT) ntlworld (DOT) com> wrote in message news:45d30c11$1 (AT) newsgroups (DOT) borland.com... Quote: I am using Indy 9 with BDS 2006 but have found a problem with the ftp module when I use IdFTP1->List(SL,"",false); If there is nothing in the folder it crashes. The server is likely sending back a faulty reply. Look at the "Indy FTP Response Codes for NLST" discussion in the "borland.public.delphi.internet.winsock" newsgroup from last night. Gambit Back to top David Ayre Guest Posted: Thu Feb 15, 2007 4:07 pm    Post subject: Re: IdFTP1->List problem "Remy Lebeau \(TeamB\)" <no.spam (AT) no (DOT) spam.com> wrote: Quote: "David Ayre" <davidcayre (AT) ntlworld (DOT) com> wrote in message news:45d30c11$1 (AT) newsgroups (DOT) borland.com... I am using Indy 9 with BDS 2006 but have found a problem with the ftp module when I use IdFTP1->List(SL,"",false); If there is nothing in the folder it crashes. The server is likely sending back a faulty reply. Look at the "Indy FTP Response Codes for NLST" discussion in the "borland.public.delphi.internet.winsock" newsgroup from last night. Gambit I've had a look at the NLST discussion but couldn't glean anything that would help me. If the server gives the wrong response to IdFTP1->List(SL,"",false); for an empty folder, how can I detect this and continue, ignoring the List(), which would then be unnecessary? David Back to top Tom Guest Posted: Thu Feb 15, 2007 8:41 pm    Post subject: Re: IdFTP1->List problem Quote: If the server gives the wrong response to IdFTP1->List(SL,"",false); for an empty folder, how can I detect this and continue, Indy uses Exceptions therefore if a bad response is received an exception should be thrown. That being the case you need to use try/catch to catch the exceptions and deal with them accordingly. If an exception isn't thrown, you should check the response code that is returned and determine your action from there. Regards, Tom Back to top Remy Lebeau (TeamB) Guest Posted: Thu Feb 15, 2007 11:38 pm    Post subject: Re: IdFTP1->List problem "David Ayre" <davidcayre (AT) ntlworld (DOT) com> wrote in message news:45d430c5$1 (AT) newsgroups (DOT) borland.com... Quote: I've had a look at the NLST discussion but couldn't glean anything that would help me. Then I suggest you use a packet sniffer, such as Ethereal, to find out exactly what the server is sending. Gambit Back to top David Ayre Guest Posted: Fri Feb 16, 2007 12:57 am    Post subject: Re: IdFTP1->List problem "Tom" <tom (AT) nospam (DOT) net> wrote: Quote: If the server gives the wrong response to IdFTP1->List(SL,"",false); for an empty folder, how can I detect this and continue, Indy uses Exceptions therefore if a bad response is received an exception should be thrown. That being the case you need to use try/catch to catch the exceptions and deal with them accordingly. If an exception isn't thrown, you should check the response code that is returned and determine your action from there. Regards, Tom Thanks Tom, I thought something like that would do it, but I'm not sure how to set it out. Could you possibly give me a code example. Cheers, David Back to top Tom Guest Posted: Fri Feb 16, 2007 7:53 am    Post subject: Re: IdFTP1->List problem David, Without knowing the exact exception that's being thrown, I can only give you a general try catch example. Once you get the exception name I would only catch that exception so you can deal with any others that may show up accordlingly. try { IdFTP1->List(SL, "", false); } catch (Exception &e) { // This will catch every exception and handle them the same // way. If you have different exceptions coming up, you need to // catch them separately by using the proper names. // IE: catch (EIdSocketError &e) or catch (EIdProtocolReplyError) // If you need to do something special, put that code here. // otherwise the error message will disappear. Please remember // that the error will still be shown if you're using the debugger. } Regards, Tom Back to top David Ayre Guest Posted: Fri Feb 16, 2007 8:25 pm    Post subject: Re: IdFTP1->List problem Thanks Tom, That seems to have solved the problem. Cheers, David "Tom" <tom (AT) nospam (DOT) net> wrote: Quote: David, Without knowing the exact exception that's being thrown, I can only give you a general try catch example. Once you get the exception name I would only catch that exception so you can deal with any others that may show up accordlingly. try { IdFTP1->List(SL, "", false); } catch (Exception &e) { // This will catch every exception and handle them the same // way. If you have different exceptions coming up, you need to // catch them separately by using the proper names. // IE: catch (EIdSocketError &e) or catch (EIdProtocolReplyError) // If you need to do something special, put that code here. // otherwise the error message will disappear. Please remember // that the error will still be shown if you're using the debugger. } Regards, Tom Back to top David Ayre Guest Posted: Mon Feb 19, 2007 1:06 am    Post subject: Re: IdFTP1->List problem "Remy Lebeau \(TeamB\)" <no.spam (AT) no (DOT) spam.com> wrote: Quote: "David Ayre" <davidcayre (AT) ntlworld (DOT) com> wrote in message news:45d430c5$1 (AT) newsgroups (DOT) borland.com... I've had a look at the NLST discussion but couldn't glean anything that would help me. Then I suggest you use a packet sniffer, such as Ethereal, to find out exactly what the server is sending. Gambit Thanks Remy, Ive downloaded that and got it going. In the meantime I just put the List() into a try/catch and allowed it to ingore the return when there was an empty folder. Now I can check the return and make it more specific. Thanks for your help. 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