buffer-to-from-string.js

var b = new Buffer(256*256)
for (var i = 0 ; i < 256*256 ; i ++) {
  b[i] = i % 256
}
var s = b.toString("binary")
var b2 = new Buffer(s, "binary")
for (var i = 0 ; i < 256*256 ; i ++) {
  if (b2[i] !== i) console.error("error at 0x"+i.toString(16))
}