Another crash/hangup/lockup where IO was dropping all connections more or less at once:
I had the following three threads connected:
IO -> IO
(19:06:05) [i] [IO_703 -> IO_703] myfile1.r02 4,3 Mbytes/8,41(s)/814,95Kbps
(19:06:05) [IO_703] CPSV
(19:06:05) [IO_703] 227 Entering Passive Mode (1,1,1,1,59,178)
(19:06:05) [IO_703] PORT 1,1,1,1,59,178
(19:06:05) [IO_703] 200 PORT command successful.
(19:06:05) [IO_703] STOR myfile1.r01
(19:06:05) [IO_703] 150 Opening BINARY mode data connection for myfile1.r01 using SSL/TLS.
(19:06:05) [IO_703] RETR myfile1.r01
(19:06:06) [IO_703] 150 Opening BINARY mode data connection for myfile1.r01 (14648 bytes) using SSL/TLS.
(19:06:22) [IO_703] 426 Connection closed: The specified network name is no longer available.
(19:06:22) [IO_703] CPSV
(19:06:22) [IO_703] 227 Entering Passive Mode (1,1,1,1,63,77)
(19:06:22) [IO_703] CPSV
(19:06:22) [IO_703] 227 Entering Passive Mode (1,1,1,1,64,179)
(19:06:22) [IO_703] CPSV
(19:06:22) [IO_703] 227 Entering Passive Mode (1,1,1,1,67,161)
(19:06:22) [IO_703] Connecting to IO_703
(19:06:22) [IO_703] Resolving IO_703.dns.com...
(19:06:22) [IO_703] IO_703.dns.com => 2.2.2.2
(19:06:22) [IO_703] Connecting to 2.2.2.2:21
(19:06:22) [IO_703] Connection Reset by Peer(10054)
DR -> IO
(19:05:25) [i] [DRFTPD -> IO_703] myfile2.r45 4,3 Mbytes/3,91(s)/442,39Kbps
(19:05:25) [DRFTPD] PRET RETR myfile2.r44
(19:05:25) [DRFTPD] 200 OK, will use master for upcoming transfer
(19:05:25) [DRFTPD] CPSV
(19:05:25) [DRFTPD] 227 Entering Passive Mode (1,1,1,1,119,108).
(19:05:25) [IO_703] PORT 1,1,1,1,119,108
(19:05:26) [IO_703] 200 PORT command successful.
(19:05:26) [IO_703] STOR myfile2.r44
(19:05:26) [IO_703] 150 Opening BINARY mode data connection for myfile2.r44 using SSL/TLS.
(19:05:26) [DRFTPD] RETR myfile2.r44
(19:05:26) [DRFTPD] 150 File status okay; about to open data connection from master.
(19:06:21) [DRFTPD] 426- Connection reset by peer: socket write error
(19:06:21) [DRFTPD] 426 Connection reset by peer: socket write error
(19:06:21) [DRFTPD] PRET RETR myfile2.r44
(19:06:21) [DRFTPD] 200 OK, will use master for upcoming transfer
(19:06:21) [DRFTPD] CPSV
(19:06:21) [DRFTPD] 227 Entering Passive Mode (1,1,1,1,125,249).
(19:06:21) [IO_703] Connecting to IO_703
(19:06:21) [IO_703] Resolving IO_703.dns.com...
(19:06:21) [IO_703] IO_703.dns.com => 2.2.2.2
(19:06:21) [IO_703] Connecting to 2.2.2.2:21
(19:06:21) [IO_703] Connection Reset by Peer(10054)
Moving directory
(19:04:56) [IO_703] RNFR Subdir
(19:04:56) [IO_703] 350 Directory exists, ready for destination name.
(19:04:56) [IO_703] RNTO /ROOT/Mydir/Subdir
(19:04:56) [IO_703] 250 RNTO command successful.
(19:04:56) [IO_703] PASV
(19:04:57) [IO_703] 227 Entering Passive Mode (2,2,2,2,60,17)
(19:04:57) [IO_703] Opening data connection IP: 2.2.2.2 PORT: 15377
(19:04:57) [IO_703] LIST
(19:04:57) [IO_703] 150 Opening ASCII mode data connection for directory listing using SSL/TLS.
(19:04:57) [IO_703] Encryption algorithm: TLSv1 DES-CBC3-SHA-168
(19:04:59) [IO_703] 226-[UL: 1GB] [DL: 1GB] [Speed: 1.3KB/s] [Free: 1MB]
(19:04:59) [IO_703] 226 [Section: DEFAULT] [Credits: 150.0MB] [Ratio: Leech]
(19:04:59) [IO_703] List Complete: 3*129 bytes in 0,47 seconds (10,67KB/s)
(19:05:05) [IO_703] CWD .
(19:05:06) [IO_703] 250 CWD command successful.
(19:05:06) [IO_703] PWD
(19:05:06) [IO_703] 257 "/ROOT" is current directory.
(19:05:11) [IO_703] RNFR Subdir3
(19:05:11) [IO_703] 350 Directory exists, ready for destination name.
(19:05:11) [IO_703] RNTO /ROOT/Mydir3/Subdir3
(19:05:12) [IO_703] 250 RNTO command successful.
(19:05:12) [IO_703] PASV
(19:05:12) [IO_703] 227 Entering Passive Mode (2,2,2,2,56,136)
(19:05:12) [IO_703] Opening data connection IP: 2.2.2.2 PORT: 14472
(19:05:12) [IO_703] LIST
(19:05:12) [IO_703] 150 Opening ASCII mode data connection for directory listing using SSL/TLS.
(19:05:15) [IO_703] Encryption algorithm: TLSv1 DES-CBC3-SHA-168
(19:05:16) [IO_703] 226-[UL: 1GB] [DL: 1GB] [Speed: 1KB/s] [Free: 1MB]
(19:05:16) [IO_703] 226 [Section: DEFAULT] [Credits: 1MB] [Ratio: 1]
(19:05:16) [IO_703] List Complete: 72*984 bytes in 0,56 seconds (74,77KB/s)
(19:05:36) [IO_703] CWD .
(19:05:36) [IO_703] 250 CWD command successful.
(19:05:36) [IO_703] PWD
(19:05:36) [IO_703] 257 "/ROOT" is current directory.
(19:05:51) [IO_703] CWD .
(19:05:51) [IO_703] 250 CWD command successful.
(19:05:51) [IO_703] PWD
(19:05:51) [IO_703] 257 "/ROOT" is current directory.
(19:06:06) [IO_703] CWD .
(19:06:06) [IO_703] 250 CWD command successful.
(19:06:06) [IO_703] PWD
(19:06:06) [IO_703] 257 "/ROOT" is current directory.
(19:06:17) [IO_703] RNFR Subdir2
(19:06:18) [IO_703] 350 Directory exists, ready for destination name.
(19:06:18) [IO_703] RNTO /ROOT/Mydir2/Subdir2
(19:06:21) [IO_703] Connecting to IO_703
(19:06:21) [IO_703] Resolving IO_703.dns.com...
(19:06:21) [IO_703] IO_703.dns.com => 2.2.2.2
(19:06:21) [IO_703] Connecting to 2.2.2.2:21
(19:06:21) [IO_703] Connection Reset by Peer(10054)
Notice the timestamps, where io decided to just drop all connections, and not allow any new ones to be made..
*Edit: After some minutes, io was back on again - and it had created a crashlog - so now there's something to debug!