Upgrading from 5.2.5 to 5.3.0 gives NPEx when connecting

Question

I'm using the multiprotocol client class, & I simply replaced the 525 jar in my classpath with the 530 version.

When I connect to a host using explicit FTPS (have not tried other protocols yet), I get the following NPEx:

ERROR [ConnectTask] 27 Sep 2018 22:27:30.068 : 1:Connect[dropbox-ssl.redhat.com:21] failed : null
java.lang.NullPointerException
        at com.enterprisedt.net.ftp.ssl.SSLFTPClient.enableCipherSuites(SSLFTPClient.java:1181)
        at com.enterprisedt.net.ftp.async.internal.ConnectFTPSETask.preConnectConfigure(ConnectFTPSETask.java:229)
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.connect(ConnectTask.java:153)
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.run(ConnectTask.java:216)
        at com.enterprisedt.net.ftp.async.internal.FTPTaskProcessor$b.run(FTPTaskProcessor.java:593)


java.lang.NullPointerException
        at com.enterprisedt.net.ftp.ssl.SSLFTPClient.enableCipherSuites(SSLFTPClient.java:1181)
        at com.enterprisedt.net.ftp.async.internal.ConnectFTPSETask.preConnectConfigure(ConnectFTPSETask.java:229)
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.connect(ConnectTask.java:153)
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.run(ConnectTask.java:216)
        at com.enterprisedt.net.ftp.async.internal.FTPTaskProcessor$b.run(FTPTaskProcessor.java:593)
ERROR [InternalConnectCallback] 27 Sep 2018 22:27:30.070 : Disconnected
null

ERROR [FTPTaskProcessor] 27 Sep 2018 22:27:30.070 : FTPThread[FTPThread_edt_1] - task 1:Connect[dropbox-ssl.redhat.com:21] failed : null
com.enterprisedt.net.ftp.async.internal.a
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.run(ConnectTask.java:271)
        at com.enterprisedt.net.ftp.async.internal.FTPTaskProcessor$b.run(FTPTaskProcessor.java:593)


com.enterprisedt.net.ftp.async.internal.a
        at com.enterprisedt.net.ftp.async.internal.ConnectTask.run(ConnectTask.java:271)
        at com.enterprisedt.net.ftp.async.internal.FTPTaskProcessor$b.run(FTPTaskProcessor.java:593)

If you need me to turn on debug level trace, or you need a simple testcase with source code to show what I'm doing, just let me know!

Answer 1

I've found the issue and it is a bug in our code. I've now fixed the bug and it is released as 5.3.1. Please download the release from our customer site and that should resolve it for you.