commons-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From sebb <seb...@gmail.com>
Subject Re: commons-net sending FTP not working on EC2 server
Date Fri, 12 Oct 2012 01:44:34 GMT
On 11 October 2012 13:40, David Hoffer <dhoffer6@gmail.com> wrote:
> This is what I see from the listener.
>
> 220 Serv-U FTP Server v12.1 ready...
> USER *******
> 331 User name okay, need password.
> PASS *******
> 230 User logged in, proceed.
> PORT 10,144,154,209,143,212
>
> What does that PORT line mean?  Is that the incoming ports that must
> be open?  Why does it use so many ports?  Is that a fixed set or is
> this configurable?

This is just how FTP handles IP addresses and ports, search for

"FTP PORT command"

> -Dave
>
> On Thu, Oct 11, 2012 at 6:13 AM, David Hoffer <dhoffer6@gmail.com> wrote:
>> Thanks for the reply and info.
>>
>> How do I set it in Active mode?  I don't see a method to do this.  I
>> do see these:
>>
>> setActiveExternalIPAddress()
>> setActivePortRange()
>>
>> But those seem to imply they are used if already in active mode...not
>> clear how to do that.
>>
>> I have added the ProtocolCommandListener I'll see what it report.
>>
>> Does anyone know what ports must be open for this to work?
>>
>> -Dave
>>
>> On Thu, Oct 11, 2012 at 2:29 AM, sebb <sebbaz@gmail.com> wrote:
>>> On 11 October 2012 04:27, David Hoffer <dhoffer6@gmail.com> wrote:
>>>> I just moved an app over to an EC2 server and I'm having trouble
>>>> sending data via FTP.  This has worked for years on a different Linux
>>>> server, the new one is Linux too just on Amazon EC2.
>>>>
>>>> The code is really simple...basically...
>>>>
>>>> FTPClient ftp = new FTPClient();
>>>> ftp.login(username, password);
>>>> ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(fileBytes);
>>>> OutputStream os = ftp.storeFileStream(fileName);
>>>>
>>>> byte buf[] = new byte[8192];
>>>> int bytesRead = byteArrayInputStream.read(buf);
>>>> while (bytesRead != -1) {
>>>>        os.write(buf, 0, bytesRead);
>>>>        bytesRead = byteArrayInputStream.read(buf);
>>>> }
>>>> byteArrayInputStream.close();
>>>> os.close();
>>>> ftp.completePendingCommand();
>>>> ftp.logout();
>>>>
>>>> when I debug it...it blocks forever at the call to storeFileStream().
>>>> When it runs while not debugging I get a SocketException (Connection
>>>> time out)...not sure if at same line or another such as os.write()..
>>>>
>>>> I was using version 3.0.1, I just upgraded to 3.1 to see if that would
>>>> help but it has the same problem.  The only difference I can think of
>>>> is that the old server was using Java 6 the new one is Java 7.  One
>>>> other thing that is different is that the EC2 has most ports blocked,
>>>> I've opened port 21 and UDP/DNS.  Is there any other ports that are
>>>> needed for FTP?
>>>>
>>>> What might be causing this?  I'm completely stuck not knowing where to
>>>> look at this point.
>>>
>>> Most likely there is a port that is not open.
>>>
>>> Try using active FTP mode; that may work better, or may cause issues
>>> if there is a dumb NAT box in the way.
>>>
>>> Try adding a protocol command listener:
>>>
>>> ftp.addProtocolCommandListener(new PrintCommandListener(new
>>> PrintWriter(System.out), true));
>>>
>>>> -Dave
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
>>>> For additional commands, e-mail: user-help@commons.apache.org
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
>>> For additional commands, e-mail: user-help@commons.apache.org
>>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
> For additional commands, e-mail: user-help@commons.apache.org
>

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
For additional commands, e-mail: user-help@commons.apache.org


Mime
View raw message