Total commander secure ftp5/4/2023 ![]() ![]() I quickly found that the above response is indicative of an active FTP session, in which the client specifies a data port for the server to initiate a data connection to. (you can print the server’s response with FTPSClient.addProtocolCommandListener(new PrintCommandListener(System.out))) Upon listing files in the DATA_FOLDER, I received the following from the server: PORT xxx,…,xxx With the Apache Commons class straight out of the box, I tried the following (where client is an FTPSClient, and 21 is the default FTPS server’s command port): nnect(host, 21) One vendor we began working with only supports data transfer over FTPS (no, not SFTP), a method we had not used in our data platform previously so I set about building some simple infrastructure to programmatically connect to an FTPS server and upload or download files. Here at Wealthfront, we like to automate this process as much as possible, so we set up periodic jobs that scrape, push and pull our data as needed (see 3 Ways to Integrate Third-Party Metrics into Your Data Platform). This post outlines my process for discovering the flaw and the steps I took to engineer a reliable patch if, however, you’ve been desperately Googling for solutions to “SSL session reuse required” and are on your last straw, you can jump ahead to the solution here.Īlthough we may not always like to admit it, no tech company is an island: we often find ourselves reliant on third party vendors for applications from marketing to compliance, and we need secure methods for transferring data between ourselves and these vendors. Several hours of debugging later, however, I realized to my dismay that the omnipotent Apache Commons did not support a major security feature required by most modern FTPS servers. “Good programmers write good code… Great programmers reuse great code.” Or so I told myself as I snagged an Apache Commons class to connect to a new vendor’s FTPS server. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |