CODEWITHSUNDEEP
phpsocketsportvps
Eugene
Eugene

Reputation: 85

Cannot connect to port on vps

My PHP script opens port using socket like:

$socket = stream_socket_server('tcp://127.0.0.1:' . $this->port, $errno, $errstr);

For example say port is 58889.

I cannot connect to port from telnet (Connection refused).

Here is what 'netstat -plunt' command shows:

tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      -               
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      -               
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:58889         0.0.0.0:*               LISTEN      13849/php       
tcp        0      0 127.0.0.1:58890         0.0.0.0:*               LISTEN      13841/php       
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      -               
tcp        0      0 127.0.0.1:58891         0.0.0.0:*               LISTEN      13857/php       
tcp6       0      0 :::22                   :::*                    LISTEN      -               
tcp6       0      0 :::25                   :::*                    LISTEN      -

There is no special firewall rules on hosting provider. How to fix it?

Upvotes: 1

Views: 1269

Answers (1)

Ryan Vincent
Ryan Vincent

Reputation: 4513

The issue is that the TCP server is only listening for connections on the localhost IP address.

This will only allow connections from the 'local' machine.

To specify to listen for connections on all the IP addresses on the machine, which will allow connections from external machines, then use an IP Address of '0.0.0.0' (IPv4):

stream_socket_server('tcp://0.0.0.0:' . $this->port, $errno, $errstr);

Upvotes: 2

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