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function handleRequest(request, response) {
if (request.queryString == "") {
var etag = request.hasHeader("If-Match")
? request.getHeader("If-Match")
: null;
if (!etag || etag == getState("etag")) {
response.setStatusLine(request.httpVersion, 200, "Ok");
response.setHeader("Content-Type", "text/html");
response.setHeader("ETag", getState("etag"));
response.setHeader("Cache-control", "max-age=36000");
response.write(getState("etag"));
} else if (etag) {
response.setStatusLine(request.httpVersion, 412, "Precondition Failed");
}
} else {
var etag = request.queryString.match(/^etag=(.*)$/);
if (etag) {
setState("etag", etag[1]);
}
response.setStatusLine(request.httpVersion, 204, "No content");
}
}