| Tag Link | [Net->Listen] | Category | Networking |
|---|---|---|---|
| Type | Member | Source Available | Yes |
| Support | Preferred | Version | 7.0 |
| Change | Unchanged | Data Source | Any |
| Output Type | None | Security | None |
| Implementation | LCAPI | Sets | Lasso 8.5, Lasso 8.0, Lasso 7.0 |
[Net->Listen] is used to place a [Net] object into TCP listening mode. The [Net->Bind] tag must be used first to establish what port the connection should listen on. The [Net->Accept] tag can then be used to accept individual incoming connections.
<?LassoScript
Variable: 'Listener' = (Net);
$Listener->(Bind: 8000);
$Listener->(Listen);
Variable: 'Connection' = $Listener->Accept;
...
$Connection->Close;
$Listener->Close;
?>
No Parameters Required.
To listen for incoming TCP connections:
Use the [Net] type and its member tags to establish a TCP listener. The following example listens on port 80 for incoming TCP traffic. The [Net->Accept] tag returns a new connection and the IP address of the local machine and the remote machine are reported.
[Variable: 'myListener' = (Net)]
[$myListener->(Bind: 80)]
[$myListener->(Listen)]
[Variable: 'myConnecton' = $myListener->(Accept)]
Local: [Output: $myConnection->(LocalAddress)]
Remote: [Output: $myConnection->(RemoteAddress)]
[Variable: 'Input' = $myConnection->(Read: 32768)]
...
[$myConnection->(Close)]
[$myListener->(Close)]
Local: 127.0.0.1
Remote: www.example.com