Attempts to begin hosting a HTTP server on the given port. The port is a number from 1 to 65535, but 80 is the default for HTTP.

HTTP is the insecure variant of the protocol that websites use, e.g. http://google.com. It can be used without buying a SSL certificate that the secure variant HTTPS requires.


It is possible to connect to the server on the machine it's on, using http://localhost:port/ in a browser. Likewise, you can use an IP, including using a local IP, to access it over LAN.

Refer to the Hosting a server topic to expose your server to outside your LAN.


Be aware Lacewing Webserver has its source code lost, and is a security risk, as it has plenty of bugs that can be exploited.


Running a Host action twice on the same port will result in a repeating error:

Socket error – Error accepting – The I/O operation has been aborted because of either a thread exit or an application request. (995)