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javaftpftp-clientapache-commons-net

Apache Commons FTP: isPositivePreliminary returns false (code 550)

I'm using Apache Commons' FTPClient to talk to an FTP server and upload some file. Inside the code, I discovered that the function isPositivePreliminary() returns false, because the reply code it gets is 550. The same code acts differently (with no problems) accessing other FTP sites.

However, when I try to open a regular FTP connection in shell with the same address, user and password - everything works just fine: going into passive mode, uploading and renaming a file.

So what gives? Why can't my code access it? I'm guessing it's something in the remote FTP configuration, but what do I need to tell my customer?

Solution

  • I know what it is (for future reference): Error 550 states that "The filename, directory name, or volume label syntax is incorrect.". In my code, I tried uploading a file that had colons in its name, which this particular FTP server didn't like.

    -dbg