making-a-put.js

  var client = http.createClient(u.port || (u.protocol === "https:" ? 443 : 80), u.hostname);
  var request = client.request("PUT", u.pathname, headers);
  request.write(what, "utf8");
  request.addListener("response", function (response) {
      if (response.statusCode !== 200) return cb(new Error(
        "Status code " + response.statusCode + " from PUT "+where));
      var data = "";
      response
        .setBodyEncoding("utf8")
        .addListener("data", function (chunk) { data += chunk })
        .addListener("end", function () {
          try {
            data = JSON.parse(data);
          } catch (ex) {
            return cb(ex);
          }
          if (data.error) return cb(new Error(data.error));
          cb(null, data);
        });
    });
  request.close();