PHP FTP functionality not working on just one server.

[scott.stephan]

Here's the rub: On one of our hosted sites, anything FTP'ed via PHP FTP functions will not work. I wrote a small program to test this:

 

<?php
// set up basic connection
$ftp_server="ftp.ftp.ftp";
$conn_id = ftp_connect($ftp_server); 
$ftp_user_name="ftp";
$ftp_user_pass="ftp";
$destination_file="/ftp/web/content/ftptest/testfromftpserver.txt";
$source_file="test.txt";
// login with username and password
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); 

// check connection
if ((!$conn_id) || (!$login_result)) { 
        echo "FTP connection has failed!";
        echo "Attempted to connect to $ftp_server for user $ftp_user_name"; 
        exit; 
    } else {
        echo "Connected to $ftp_server, for user $ftp_user_name";
    }

// upload the file
$upload = ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY); 

// check upload status
if (!$upload) { 
        echo "FTP upload has failed!";
    } else {
        echo "Uploaded $source_file to $ftp_server as $destination_file";
    }

// close the FTP stream 
ftp_close($conn_id); 
?>

 

Names changed to protect the innocent .

 

Anyhow, I had 3 servers I was testing with. We'll call them A, B and Problem.

 

A->B is fine. B->A is fine.

 

Problem->A or Problem->B, I get "Connected to ftp.ftp.ftp, for user ftp FTP upload has failed!". It also takes about 45 seconds to return the error, whereas in A->B or vice versa it takes about 5 seconds to get a success result.

 

I'm guessing this could be a server configuration error, or a php.ini thing, but I'm stumped. Thoughts?

[ldougherty]

Have you tried to make sure you have connectivity between the problem server and the other servers?  IE telnet serverA 21 from SSH to see if you can gain access?

[scott.stephan]

It has been quite awhile since I was around SSH. Anyway, I managed to open a session, pop into TelNet and it seemed like any attempt to OPEN or PING another server ended either with an outright refusal (Unable, Connection refused) or dead air.

 

Thoughts?