> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Arno Garrels > Sent: 30 March 2007 19:58 > To: ICS support mailing > Subject: Re: [twsocket] Questions about FTPClient > > Arnau Font wrote: > >> > >> Also, I'm having trouble with slow transmissions. When a download > >> lasts more > >> than 20 minutes the component seems to freeze, > > Does "freeze" mean that the GUI is not repainted? > > >> and the component > >> remains in > >> ftpWaitingResponse. > > If the GUI _is repainted, I guess a router/proxy problem. > I recently experienced the same in a non-FTP application. > We solved it by sending some 'real' keepalive bytes from > our client application in regular intervals, triggered by a timer. > The problem with TFtpCli however is that you cannot send a command > while another command is still waiting for a reply. So my only > idea is to try to send some raw, fake FTP-command thru > FtpCli.ControlSocket.SendStr() to keep the control connection > alive, some command that does not require a data socket. > > >> It seems that it doesn't receive the confirmation > >> (FServerSaidDone still remains at false). I suspect that, as the > >> control > >> socket is idle all this time, some device closes it and I can't > >> receive the > >> server confirmation, I only get the DataSocketGetSessionClosed event. > >> > >> I'm behind an ISA Server, I suppose that it closes the control > >> socket, as it > >> isn't sending anything. How can I avoid that? > > > > In latest downloads there's a new public property KeepAliveSecs to > > enable keepalive packets on the control socket, this should avoid > > the connection from being closed on inactivity. > > > > I've downloaded the lastest v6 beta, but is still doesn't work. I've > > set the > > keepalivesecs to 60. Should I change any other property? > > So obviously those keepalive packets do not reset the timeout (where > ever it happens) however sending some bytes may help, see above. >
Try sending the NOOP command periodically whilst downloading/uploading. Most servers should support this. Not sure how the component will handle the response if it's waiting for the response from the GET/PUT though. Dan -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
