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function parseQueryString(str) {
var paramArray = str.split("&");
var regex = /^([^=]+)=(.*)$/;
var params = {};
for (var i = 0, sz = paramArray.length; i < sz; i++) {
var match = regex.exec(paramArray[i]);
if (!match) {
throw new Error("Bad parameter in queryString! '" + paramArray[i] + "'");
}
params[decodeURIComponent(match[1])] = decodeURIComponent(match[2]);
}
return params;
}
function handleRequest(request, response) {
response.setHeader("Cache-Control", "no-cache", false);
var params = parseQueryString(request.queryString);
var oldShared = getSharedState("shared-value");
response.setHeader("X-Old-Shared-Value", oldShared, false);
var newShared = params.newShared;
if (newShared !== undefined) {
setSharedState("shared-value", newShared);
response.setHeader("X-New-Shared-Value", newShared, false);
}
var oldPrivate = getState("private-value");
response.setHeader("X-Old-Private-Value", oldPrivate, false);
var newPrivate = params.newPrivate;
if (newPrivate !== undefined) {
setState("private-value", newPrivate);
response.setHeader("X-New-Private-Value", newPrivate, false);
}
}