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.
-Dave
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