Mikael created NET-687:
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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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