Thank you for your prompt reply jwcarman :) I will look into Commons VFS library. I am however not sure if I will be able to use this library in my source code as this code has been around for many years. If this library does what I need it to do, I will see if I can integrate it into the existing code.
Any ideas on the questions I posted in my original message? Thank you. jwcarman wrote: > > To simplify your code, I'd suggest using the Commons VFS library. > > On Tue, Sep 2, 2008 at 9:01 AM, chitraa <[EMAIL PROTECTED]> wrote: >> >> Hi all, >> >> Although the subject of this message indicates that the Exception I am >> getting is a java thing, I am using the apache.commons.net package and >> have >> a suspicion that it could be related to this library. >> >> Here's a bit about my program. My program makes a TCPIP connection to >> other >> machines and uses the FTP protocol to retrieve files to download on the >> remote machine. I am using the apache.commons.net.FtpClient java class to >> provide me with an interface that allows me to connect to the remote >> machine, log on, list the files that are on the remote computer and >> download >> all the files that I need. >> >> I have written my own implementation for >> apache.commons.net.SocketFactory. >> Also, I have ensured that when I connect to a machine and open a socket, >> I >> disconnect when I am done with the connection. >> >> After 2 days, I get this exception: >> >> java.net.SocketException: No buffer space available (maximum connections >> reached?): listen failed >> at java.net.PlainSocketImpl.socketListen(Native Method) >> at java.net.PlainSocketImpl.listen(Unknown Source) >> at java.net.ServerSocket.bind(Unknown Source) >> at java.net.ServerSocket.<init>(Unknown Source) >> at >> com.mypackage.TimeoutSettingServerSocketProxy.<init>TimeoutSettingServerSocketProxy.java:28) >> at >> com.mypackage.MySocketFactory.createServerSocket(RedflexSocketFactory.java:69) >> at >> org.apache.commons.net.ftp.FTPClient._openDataConnection_(FTPClient.java:475) >> at org.apache.commons.net.ftp.FTPClient.retrieveFile(FTPClient.java:1285) >> >> After running a few test programs, I realised that this was because the >> server was having too many open connections. I have checked my program >> and I >> have closed all open sockets. So, I was wondering if there is an issue >> with >> apache.commons.net? Does FTPClient open up a ServerSocket without closing >> it? >> >> Also, whats interesting is that once this exception has been thrown, I >> get >> disconnected from the machine. Reconnecting to it will obviously throw >> the >> exception again. However, when I connect to other machines, it throws the >> same exception: >> >> Failed to connect to 192.168.1.2 No buffer space available (maximum >> connections reached?): connect >> >> If the 'no buffer space available' is thrown because of too many open >> connections on the server, why can't I connect to other servers (which >> don't >> have many open connections). Why does the client (my machine) throw that >> same exception when trying to connect to OTHER machines? >> >> Thank you. >> Kind regards, >> Chitra >> -- >> View this message in context: >> http://www.nabble.com/The-java.net.SocketException%3A-No-buffer-space-available-%28maximum-connections-reached-%29%3A-listen-failed-Exception-tp19269806p19269806.html >> Sent from the Commons - User mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/The-java.net.SocketException%3A-No-buffer-space-available-%28maximum-connections-reached-%29%3A-listen-failed-Exception-tp19269806p19270674.html Sent from the Commons - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
