Sending the same chunk for 20*20 chunks

login.js

var dump=serv.world.dump();
    var begin=1;
    var total=20;
    var x,z;
    for(x=-begin;x<begin;x++)
      for(z=-begin;z<begin;z++) {
        player._client.write('map_chunk', {
          x: x,
          z: z,
          groundUp: true,
          bitMap: 0xffff,
          chunkData: dump
        });
      }

    var adds=[];
    for(x=-total;x<total;x++)
      for(z=-total;z<total;z++) {
        if(x>=-begin && x<begin && z>=-begin && z<begin) continue;
        (function(x,z) {
          adds.push(function () {
            console.log("plop " + x + " " + z);
            player._client.write('map_chunk', {
              x: x,
              z: z,
              groundUp: true,
              bitMap: 0xffff,
              chunkData: dump
            });
          });
        })(x,z);
      }
    setTimeout(function(){
      var i=0;
      function next()
      {
        if(adds.length>i) {
          setTimeout(next, 100);
          adds[i]();
        }
        i++;
      }
      next();
    },10000);