Gary Chen created NET-699:
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Summary: FTPClient storeFile() method return false because cannot
open socket
Key: NET-699
URL: https://issues.apache.org/jira/browse/NET-699
Project: Commons Net
Issue Type: Bug
Components: FTP
Affects Versions: 3.6
Reporter: Gary Chen
Fix For: 3.6
Attachments: image-2021-04-16-14-44-26-858.png
Currently we're using common-pool to store those ftpClient, and sometimes the
storeFile() method return false with reply "200 send noop successfully".
{code:java}
primary:
host: nycsdevfeed.rrdev.dev.reuters.com
port: 21
userName: anonymous
password: anonymous
role: 0
baseDir: /
tempFolder: temp/
controlEncoding: UTF-8
useEPSVWithIPv4: false
passiveMode: true
dataTimeout: 20000 #ms, transfer command timeout in passive mode
connectTimeout: 10000 #ms, socket connection timeout
fileType: 2
bufferSize: 524288 #512 * 1024
controlKeepAliveTimeout: 110 #seconds, keep control command alive, send a
NOOP approximately every 5 mins
controlKeepAliveReplyTimeout: 45000
maxTotal: 5 #max total object in pool, default 8
maxIdle: 5 #max idle object in pool, default 8
minIdle: 2 #min idle object in pool, default 0
testOnCreate: true #verify the validateObject when create object to pool
testOnReturn: true #verify the validateObject when return object to pool
testOnBorrow: true #verify the validateObject when borrow object to pool
testWhileIdle: true #verify the validateObject when evict thread return
false(no need to remove idle object)
timeBetweenEvictionRunsMillis: 60000 #check the idle object every 60 seconds
softMinEvictableIdleTimeMillis: 120000 #keep the minIdle count idle object,
remove the redundant idle object
numTestsPerEvictionRun: 5 #evict thread will pick up 10 object to verify
blockWhenExhausted: true #if there is no more idle object, block the thread
until maxWaitMillis
maxWaitMillis: -1 #if there is no more idle object, it will throw
NoSuchElementException; -1 means always wait
{code}
This is the connection poo setting for FtpClient.
and we found that code in FTPClient._openDataConnection_()
even the pasv() method return 227, but here still return null, then storeFile()
return false with 200 noop reply.
!image-2021-04-16-14-44-26-858.png!
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