Seems the M2-Version has a timeout issue or i configured something
wrong. The control connection times out even if there is a data
connection open and a transfer running.
For testing i set all timeout values to 10 seconds.
1. Open a connection to the ftp server
2. do some browsing to a directory
3. Start a file transfer with a big file
4. Control Connection times out after 10 seconds , Data transfer is
still runnig fine and finishes Ok
5. Control Connection is gone after file transfer
Thats my config file. I have set very short timeout-values so it is easy
to reproduce the error. You can also use bigger timeout values and a
very big file to test.
<?xml version="1.0" encoding="UTF-8"?>
<server xmlns="http://mina.apache.org/ftpserver/spring/v1";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://mina.apache.org/ftpserver/spring/v1
http://mina.apache.org/ftpserver/ftpserver-1.0.xsd";
id="proxsys-ftpd"
max-logins="100"
anon-enabled="false"
max-anon-logins="0"
max-login-failures="3"
login-failure-delay="500">
<listeners>
<nio-listener name="default" port="21" idle-timeout="10">
<data-connection idle-timeout="10">
<active enabled="true"/>
<passive ports="1024-1032"/>
</data-connection>
</nio-listener>
</listeners>
</server>
