Hi,
Thank you for your answer.
In fact, after the pending STOP, nothing happens.
Here is an extract of the session where no command was sent after the STOR command (this customer is using a batch to send files one after the other and I guess the batch was waiting for the STOR command to finish before sending another file)
Code: Select all
[02] Tue, 17 May 2016 10:51:44 (0028642) Connected from xxx.xxx.xxx.xxx (local address xxx.xxx.xxx.xxx, port 21)
[04] Tue, 17 May 2016 10:51:44 (0028642) 220 Welcome to ftp.**********.com
[03] Tue, 17 May 2016 10:51:44 (0028642) USER **********
[04] Tue, 17 May 2016 10:51:44 (0028642) 331 Password required for **********
[03] Tue, 17 May 2016 10:51:44 (0028642) PASS **********
[04] Tue, 17 May 2016 10:51:44 (0028642) 230 User ********** logged in.
[03] Tue, 17 May 2016 10:51:44 (0028642) PASV
[04] Tue, 17 May 2016 10:51:44 (0028642) 227 Entering Passive Mode (xxx,xxx,xxx,xxx,40,154)
[03] Tue, 17 May 2016 10:51:44 (0028642) DELE /492764/492764_303592.jpg
[04] Tue, 17 May 2016 10:51:44 (0028642) 550 Invalid file name
[03] Tue, 17 May 2016 10:51:44 (0028642) TYPE I
[04] Tue, 17 May 2016 10:51:44 (0028642) 200 Type set to I
[03] Tue, 17 May 2016 10:51:44 (0028642) PORT xxx,xxx,xxx,xxx,166,77
[04] Tue, 17 May 2016 10:51:44 (0028642) 200 Port command successful
[03] Tue, 17 May 2016 10:51:44 (0028642) STOR /492764/492764_303592.jpg
[04] Tue, 17 May 2016 10:51:44 (0028642) 150 Opening BINARY mode data connection for file transfer.
[04] Tue, 17 May 2016 10:51:45 (0028642) 226 File received ok.Transfer bytes:77059Bytes;Average speed is:75.253KB/s
... many successfull STOR commands ...
[03] Tue, 17 May 2016 10:55:54 (0028642) PASV
[04] Tue, 17 May 2016 10:55:54 (0028642) 227 Entering Passive Mode (xxx,xxx,xxx,xxx,41,43)
[03] Tue, 17 May 2016 10:55:54 (0028642) DELE /246601/246601_29045-1.jpg
[04] Tue, 17 May 2016 10:55:54 (0028642) 550 Invalid file name
[03] Tue, 17 May 2016 10:55:54 (0028642) TYPE I
[04] Tue, 17 May 2016 10:55:54 (0028642) 200 Type set to I
[03] Tue, 17 May 2016 10:55:54 (0028642) PORT xxx,xxx,xxx,xxx,234,209
[04] Tue, 17 May 2016 10:55:54 (0028642) 200 Port command successful
[03] Tue, 17 May 2016 10:55:54 (0028642) STOR /246601/246601_29045-1.jpg
[02] Tue, 17 May 2016 11:00:54 (0028642) Closed session,disconnected from xxx.xxx.xxx.xxx
And her is another custormer with a batch wich send a delete command after two minutes without result and which generates a 451 error :
Code: Select all
[02] Wed, 20 Apr 2016 16:54:00 (0031707) Connected from xxx.xxx.xxx.xxx (local address xxx.xxx.xxx.xxx, port 21)
[04] Wed, 20 Apr 2016 16:54:00 (0031707) 220 Welcome to **********
[03] Wed, 20 Apr 2016 16:54:00 (0031707) USER *********
[04] Wed, 20 Apr 2016 16:54:00 (0031707) 331 Password required for ******
[03] Wed, 20 Apr 2016 16:54:00 (0031707) PASS **********
[04] Wed, 20 Apr 2016 16:54:00 (0031707) 230 User ********** logged in.
[03] Wed, 20 Apr 2016 16:54:01 (0031707) PASV
[04] Wed, 20 Apr 2016 16:54:01 (0031707) 227 Entering Passive Mode (xxx,xxx,xxx,xxx,238,190)
[03] Wed, 20 Apr 2016 16:54:01 (0031707) TYPE I
[04] Wed, 20 Apr 2016 16:54:01 (0031707) 200 Type set to I
[03] Wed, 20 Apr 2016 16:54:01 (0031707) STOR AV1427-1.jpg
[04] Wed, 20 Apr 2016 16:54:01 (0031707) 150 Opening BINARY mode data connection for file transfer.
[04] Wed, 20 Apr 2016 16:54:01 (0031707) 226 File received ok.Transfer bytes:85252Bytes;Average speed is:83.254KB/s
[03] Wed, 20 Apr 2016 16:54:01 (0031707) SIZE AV1427-1.jpg
[04] Wed, 20 Apr 2016 16:54:01 (0031707) 213 85252
[03] Wed, 20 Apr 2016 16:54:32 (0031707) PASV
[04] Wed, 20 Apr 2016 16:54:32 (0031707) 227 Entering Passive Mode (xxx,xxx,xxx,xxx,240,70)
[03] Wed, 20 Apr 2016 16:54:32 (0031707) STOR vv920-2.jpg
[04] Wed, 20 Apr 2016 16:54:32 (0031707) 150 Opening BINARY mode data connection for file transfer.
[04] Wed, 20 Apr 2016 16:54:32 (0031707) 226 File received ok.Transfer bytes:77558Bytes;Average speed is:75.740KB/s
[03] Wed, 20 Apr 2016 16:54:32 (0031707) SIZE vv920-2.jpg
[04] Wed, 20 Apr 2016 16:54:32 (0031707) 213 77558
... many successfull STOR commands ...
[03] Wed, 20 Apr 2016 16:54:32 (0031707) PASV
[04] Wed, 20 Apr 2016 16:54:32 (0031707) 227 Entering Passive Mode (xxx,xxx,xxx,xxx,240,71)
[03] Wed, 20 Apr 2016 16:54:32 (0031707) STOR vv920-3.jpg
[03] Wed, 20 Apr 2016 16:56:02 (0031707) DELE vk3092-1.jpg
[04] Wed, 20 Apr 2016 16:56:02 (0031707) 451 Another command is currently pending, please try again later.
...
[03] Wed, 20 Apr 2016 16:56:03 (0031707) QUIT
[04] Wed, 20 Apr 2016 16:56:03 (0031707) 451 Another command is currently pending, please try again later.
[04] Wed, 20 Apr 2016 16:56:03 (0031707) 221 Goodbye.
[02] Wed, 20 Apr 2016 16:56:03 (0031707) Closed session,disconnected from xxx.xxx.xxx.xxx
As you can see, in both case, there is no error or disconnection.
And this really started to happen after upgrade and with different customers.