Socket_00 - a first simple LuaSocket Script

"Socket_00" tests the successful integration of the LuaSocket package and (for that purpose) determines both the numeric IP address and the symbolic host name of the local system.

The program itself is extremely simple and does not need any further explanation. However, upon invocation, it may take several seconds for the "DNS lookup" to terminate (either successfully or unsuccessfully).

"Socket_00" should be invoked without any command line arguments

  lua Socket_00.lua

and - after a brief pause of reasoning - produces output similar to the following:

  Socket_00 - tries to retrieve the local host name or IP address

  trying 'tohostname("127.0.0.1")'...(may block for several seconds)
  ...failed, reason: "unable to resolve host name"

  trying 'toip("localhost")'...(may block for several seconds)
    Address      = 127.0.0.1
    canonic name =        ksat24
    alias list   = (empty)
    address list = 127.0.0.1

The actual display may vary considerably from system to system.

Source Code

The source code of this example is available for download:

• Socket_00.lua (ASCII-Datei, 4591 Bytes)

References