On Tue, Jan 06, 2004 at 03:37:21PM -0000, Richard.Townsend@edl.uk.eds.com wrote:

Hi Andrew,

I have tried to follow the code in FTPClient.

You're brave ;)

It looks like the _openDataConnection() method is responsible for sending the PORT/PASV before the RETR. However, I'm not sure how it could be safely modified to send a REST between the two requests.

You've found the right spot -- but as you've probably noticed, it's probably the hairiest code in the entire class.

I need this facility to be able to resume a partial download when transferring large files over an unreliable comms link.

Would you or another of Twisted experts be able to help make this change?

I've attached a completely untested patch! Let me know how it goes. -Andrew.

On Tue, Jan 06, 2004 at 03:37:21PM -0000, Richard.Townsend@edl.uk.eds.com wrote:

Hi Andrew,

I have tried to follow the code in FTPClient.

You're brave ;)

It looks like the _openDataConnection() method is responsible for sending the PORT/PASV before the RETR. However, I'm not sure how it could be safely modified to send a REST between the two requests.

You've found the right spot -- but as you've probably noticed, it's probably the hairiest code in the entire class.

I need this facility to be able to resume a partial download when transferring large files over an unreliable comms link.

Would you or another of Twisted experts be able to help make this change?

I've attached a completely untested patch! Let me know how it goes. -Andrew.