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From "Sebb (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (NET-552) SocketTimeoutException connecting a FTP server via an HTTP Proxy
Date Thu, 08 Jan 2015 23:45:35 GMT

     [ https://issues.apache.org/jira/browse/NET-552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebb resolved NET-552.
----------------------
       Resolution: Fixed
    Fix Version/s: 3.4

> SocketTimeoutException connecting a FTP server via an HTTP Proxy
> ----------------------------------------------------------------
>
>                 Key: NET-552
>                 URL: https://issues.apache.org/jira/browse/NET-552
>             Project: Commons Net
>          Issue Type: Bug
>          Components: FTP
>    Affects Versions: 3.3
>         Environment: All
>            Reporter: Quentin Devriendt
>              Labels: FTP, HTTP, Proxy, SocketTimeout
>             Fix For: 3.4
>
>         Attachments: ftp.patch
>
>
> Randomly, we're experiencing SocketTimoutException when we connect an FTP via an Http
Proxy :
> {noformat}
> java.io.IOException: Timed out waiting for initial connect reply
> 	at org.apache.commons.net.ftp.FTP._connectAction_(FTP.java:403)
> 	at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:931)
> 	at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:925)
> 	at org.apache.commons.net.ftp.FTPHTTPClient.connect(FTPHTTPClient.java:144)
> Caused by: java.net.SocketTimeoutException: Read timed out
> 	at java.net.SocketInputStream.socketRead0(Native Method)
> 	at java.net.SocketInputStream.read(SocketInputStream.java:150)
> 	at java.net.SocketInputStream.read(SocketInputStream.java:121)
> 	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
> 	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
> 	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
> 	at java.io.InputStreamReader.read(InputStreamReader.java:184)
> 	at java.io.BufferedReader.fill(BufferedReader.java:161)
> 	at java.io.BufferedReader.read(BufferedReader.java:182)
> 	at org.apache.commons.net.io.CRLFLineReader.readLine(CRLFLineReader.java:58)
> 	at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:315)
> 	at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:295)
> 	at org.apache.commons.net.ftp.FTP._connectAction_(FTP.java:397)
> 	... 6 more
> {noformat}
> After analysis, I think the problem is that commons-net opens 2 BufferedReader on the
same InputStream : first in the FTPHTTPClient.tunnelHandshake method, and the second in FTP._connectAction()
method.
> If the first BufferedReader reads all datas in the socket, the second waits until SocketTimeout.



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