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https://issues.apache.org/jira/browse/FTPSERVER-521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17743698#comment-17743698
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Roberto Deandrea commented on FTPSERVER-521:
--------------------------------------------
Can you please comment about this issue ?
> Failure connecting to Apache FTP/S server from curl command negotiating TLS
> 1.3 protocol version
> ------------------------------------------------------------------------------------------------
>
> Key: FTPSERVER-521
> URL: https://issues.apache.org/jira/browse/FTPSERVER-521
> Project: FtpServer
> Issue Type: Bug
> Components: Server
> Affects Versions: 1.1.4
> Environment: Operating System: Linux x64
> uname -a
> Linux ITTO-62117757H 5.19.0-46-generic #47~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC
> Wed Jun 21 15:35:31 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
> curl client used:
> curl -V
> curl 7.81.0 (x86_64-pc-linux-gnu) libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11
> brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2)
> libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.14
> Release-Date: 2022-01-05
> Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps
> mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
> Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6
> Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets zstd
> JRE used :
> usr/lib/jvm/jdk8u372-b07-jre/bin/java -version
> openjdk version "1.8.0_372"
> OpenJDK Runtime Environment (Temurin)(build 1.8.0_372-b07)
> OpenJDK 64-Bit Server VM (Temurin)(build 25.372-b07, mixed mode)
> Reporter: Roberto Deandrea
> Priority: Major
> Attachments: EmbeddingFtpServer.java, curl.log, ftpserver.log
>
>
> I do not succeed connecting curl to Apache FTPS/S server negotiating TLS11.3
> protocol version (curl forcing TLS 1.2 works fine without any problems).
> I reproduced the problem with minor changed to EmbeddingFtpServer.java source
> attached to the jira.
> In the attached file curl.log you can find the curl client log.
> From curl.log it seems that the TLS 1.3 hanshake ended succesfully, but the
> client does not receive a reply to the subsequent USER command, times out and
> closes the connection.
> * TLSv1.3 (OUT), TLS handshake, Finished (20)
> SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
> > USER spazio
> * TLSv1.2 (IN), TLS header, Supplemental data (23):
> * TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
> * server response timeout
> * Closing connection 0
>
> Do you think this is a problem in the Apache FTPS Server code or inside the
> JSSE layer of the JRE ?
>
> Thank you in advance for your cooperation.
> Roberto Deandrea
>
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