I meet an very stange issue when using JSch to do sFTP download.
When my program start up, it can download a file (about 2G) in 20 seconds;
After one day, the download time increases to about one minute;
After four or five days, the downlaod time increases to about five minutes;
If I restarted my program, it can download the file in 20 seconds.
When my program downloads slowly, other program can download in a normal speed.
With wireshark log, you can find RTT increases as time went on.
Other backgroud: OS: CentOS 6.8 JRE: 1.8 JSch: 0.1.51 and 0.1.54
Do you have any idea about this issue?
Thanks.