WSO2 EI611 FTP url for inboundendpoint FILE invalid, throws error

WSO2 EI611 FTP url for inboundendpoint FILE invalid, throws error

[2017-10-31 18:38:43,008] [] ERROR - FilePollingConsumer Repeatedly failed to resolve the file URI: ftp://username":@"servername/folder/folder/folder/ org.apache.commons.vfs2.FileSystemException: Invalid absolute URI "ftp://username":@"servername/folder/folder/folder/".

Caused by: org.apache.commons.vfs2.FileSystemException: Expecting / to follow the hostname in URI "ftp://username":***@"servername/folder/folder/folder/".

试了几个选项,还是不行。我使用了以前 Whosebug WSO2 帖子和产品文档中的 FTP url syntax/format,但没有用。我在做什么蠢事?

在 FTP URL 中添加 vfs.passive=true 神奇。 FTP 入站端点工作正常。