[jira] [Created] (NET-687) FTP data connection error Unsupported or unrecognized SSL message. Probably another ssl_reuse session error ?

["Mikael (Jira)" <ji...@apache.org>]

Mikael created NET-687:
--------------------------

             Summary: FTP data connection error Unsupported or unrecognized SSL message. Probably another ssl_reuse session error ?
                 Key: NET-687
                 URL: https://issues.apache.org/jira/browse/NET-687
             Project: Commons Net
          Issue Type: Bug
          Components: FTP
    Affects Versions: 3.7
         Environment: Tested with JDK 8, 11, 13, 14
            Reporter: Mikael


After adding the self signed polynesie.cer certificate to JVM security (_jdk-x.x.x/lib/security_) :
{code:java}
keytool.exe -import -storepass "changeit" -keystore "./cacerts" -alias polynesie.cer -file ./polynesie.cer -noprompt{code}
 polynesie.cer obtained by copying certificate part from this command line result :

{{}}
{code:java}
openssl s_client -connect ftp0.gov.pf:21 -starttls ftp{code}
Trying to retrieve a file with ftpes :
{code:java}
java -cp commons-net-examples-3.5.jar;commons-net-3.5.jar examples/ftp/FTPClientExample -A -p TLS,false -e -b ftp0.gov.pf DataVRS/fiche_Station_VRS_VAI1.pdf fiche_Station_VRS_VAI1.pdf{code}
Produce this exception :
{code:java}
javax.net.ssl.SSLException: Unsupported or unrecognized SSL message
        at java.base/sun.security.ssl.SSLSocketInputRecord.handleUnknownRecord(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketInputRecord.decode(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at org.apache.commons.net.ftp.FTPSClient._openDataConnection_(FTPSClient.java:642)
        at org.apache.commons.net.ftp.FTPClient._retrieveFile(FTPClient.java:1907)
        at org.apache.commons.net.ftp.FTPClient.retrieveFile(FTPClient.java:1893)
        at testFTP2.FTPClientExample.main(FTPClientExample.java:513)
{code}
It is probably the same error of ssl_reuse session as NET-408.

Same try with ftp4j library reports this error :
{code:java}
code=522, message= SSL connection failed; session reuse required: see require_ssl_reuse option in vsftpd.conf man page
{code}
 



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