node_postdata.js

var http = require( 'http' ),
    parse = require( 'querystring' ).parse;

http.createServer( function( request, response ) {
    var body = ''; 
    request.on( 'data', function( chunk ) {
        body += chunk.toString( );
    } );  
    request.on( 'end', function( ) {
        console.info( parse( body ) );
    } );  
    response.writeHead( 200, { 'Content-Type': 'text/html' } );
    response.end( 'OK\n' );
} ).listen( 8824 );

console.log( 'Server running at http://127.0.0.1:8824' );