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From "Himanshu Mittal (JIRA)" <>
Subject [jira] [Commented] (CAMEL-8860) Too many connection in TIME_WAIT when tempfilename is set in the FTP producer URI.
Date Tue, 07 Jul 2015 13:31:04 GMT


Himanshu Mittal commented on CAMEL-8860:

Hi Grzegorz Grzybek,

I am using {{vsftp version 2.2.2 with camel 2.14. }}
Could it be an issue with the ftp server ?

In above comments you have mentioned that even without {{tempfileName}} in URI you are seeing
1000 connection in TIME_WAIT and you have {{disconnect=false}} set in URI. 
With this configuration it should not have opened 1000 connection in TIME_WAIT. That means
sockets are not re-used . I am not sure whether my understanding is correct here.

Do you have any other alternative to avoid these many connection ?

> Too many connection in TIME_WAIT when tempfilename is set in the FTP producer URI.
> ----------------------------------------------------------------------------------
>                 Key: CAMEL-8860
>                 URL:
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-ftp
>    Affects Versions: 2.14.0
>            Reporter: Himanshu Mittal
>            Assignee: Grzegorz Grzybek
>         Attachments: NetStat_NoTempFIle.PNG, NetStat_Passive_False.PNG, NetStat_Passive_true.PNG,
Passive_false.log, Passive_false_NoTempFile.log, Passive_true.log, ResultWithOutTempFileName.log,
ResultWithTempfileName.log, Result_With_tempfileName_FTPServer_Connection_Count.PNG, Result_Without_tempfilename.PNG,
> So many connections remain in TIME_WAIT state while configuring a FTP producer route
with tempfilename property in FTP producer. 
> Files are writen using producer template.
> Producertemplate.sendBodyAndHeader(producerURI, Exchange.FILE_NAME, fileName) to write
file to destination. 
> Producer URI : {{ftp://<USER@MACHINE_ADDRESS>//?password=RAW(PASSWORD)&binary=true&passiveMode=false&delete=true&pollStrategy=#ConsumerPollStrategy&disconnect=false&tempFileName=/temp/hello.tmp&initialDelay=10&throwExceptionOnConnectFailed=true&reconnectDelay=10&maximumReconnectAttempts=0&maxMessagesPerPoll=100&readLock=changed&readLockCheckInterval=500&readLockMinLength=1&sendEmptyMessageWhenIdle=true}}
> fileName: {{file.tmp}}
> We are writing ~ 2000 files . First files are written to temp directory then moved to
destination. Connections opened for tempfiles are not re used to write temporary files and
we run out of connection after writing 1000 files. 
> Route resumes once connections are released. 
> Is there a way we can  reuse connection to write temporary files also.
> Once tempfilename is removed from the configuration then single connection is used for
ftp transfer.

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