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"use strict";
const BinaryInputStream = Components.Constructor(
"@mozilla.org/binaryinputstream;1",
"nsIBinaryInputStream",
"setInputStream"
);
const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
var httpserver = new HttpServer();
// Test the handling of a cache revalidation with mismatching last-modified
// headers. If we get such a revalidation the cache entry should be purged.
// see bug 717350
// In this test the wrong data is from 11-16-1994 with a value of 'A',
// and the right data is from 11-15-1994 with a value of 'B'.
// the same URL is requested 3 times. the first time the wrong data comes
// back, the second time that wrong data is revalidated with a 304 but
// a L-M header of the right data (this triggers a cache purge), and
// the third time the right data is returned.
var listener_3 = {
// this listener is used to process the the request made after
// the cache invalidation. it expects to see the 'right data'
QueryInterface: ChromeUtils.generateQI([
"nsIStreamListener",
"nsIRequestObserver",
]),
onStartRequest: function test_onStartR(request) {},
onDataAvailable: function test_ODA(request, inputStream, offset, count) {
var data = new BinaryInputStream(inputStream).readByteArray(count);
Assert.equal(data[0], "B".charCodeAt(0));
},
onStopRequest: function test_onStopR(request, status) {
httpserver.stop(do_test_finished);
},
};
XPCOMUtils.defineLazyGetter(this, "listener_2", function () {
return {
// this listener is used to process the revalidation of the
// corrupted cache entry. its revalidation prompts it to be cleaned
QueryInterface: ChromeUtils.generateQI([
"nsIStreamListener",
"nsIRequestObserver",
]),
onStartRequest: function test_onStartR(request) {},
onDataAvailable: function test_ODA(request, inputStream, offset, count) {
var data = new BinaryInputStream(inputStream).readByteArray(count);
// This is 'A' from a cache revalidation, but that reval will clean the cache
// because of mismatched last-modified response headers
Assert.equal(data[0], "A".charCodeAt(0));
},
onStopRequest: function test_onStopR(request, status) {
request.QueryInterface(Ci.nsIHttpChannel);
var chan = NetUtil.newChannel({
uri: "http://localhost:" + httpserver.identity.primaryPort + "/test1",
loadUsingSystemPrincipal: true,
});
chan.asyncOpen(listener_3);
},
};
});
XPCOMUtils.defineLazyGetter(this, "listener_1", function () {
return {
// this listener processes the initial request from a empty cache.
// the server responds with the wrong data ('A')
QueryInterface: ChromeUtils.generateQI([
"nsIStreamListener",
"nsIRequestObserver",
]),
onStartRequest: function test_onStartR(request) {},
onDataAvailable: function test_ODA(request, inputStream, offset, count) {
var data = new BinaryInputStream(inputStream).readByteArray(count);
Assert.equal(data[0], "A".charCodeAt(0));
},
onStopRequest: function test_onStopR(request, status) {
request.QueryInterface(Ci.nsIHttpChannel);
var chan = NetUtil.newChannel({
uri: "http://localhost:" + httpserver.identity.primaryPort + "/test1",
loadUsingSystemPrincipal: true,
});
chan.asyncOpen(listener_2);
},
};
});
function run_test() {
do_get_profile();
evict_cache_entries();
httpserver.registerPathHandler("/test1", handler);
httpserver.start(-1);
var port = httpserver.identity.primaryPort;
var chan = NetUtil.newChannel({
uri: "http://localhost:" + port + "/test1",
loadUsingSystemPrincipal: true,
});
chan.asyncOpen(listener_1);
do_test_pending();
}
var iter = 0;
function handler(metadata, response) {
iter++;
if (metadata.hasHeader("If-Modified-Since")) {
response.setStatusLine(metadata.httpVersion, 304, "Not Modified");
response.setHeader("Last-Modified", "Tue, 15 Nov 1994 12:45:26 GMT", false);
} else {
response.setStatusLine(metadata.httpVersion, 200, "OK");
response.setHeader("Cache-Control", "max-age=0", false);
if (iter == 1) {
// simulated wrong response
response.setHeader(
"Last-Modified",
"Wed, 16 Nov 1994 00:00:00 GMT",
false
);
response.bodyOutputStream.write("A", 1);
}
if (iter == 3) {
// 'correct' response
response.setHeader(
"Last-Modified",
"Tue, 15 Nov 1994 12:45:26 GMT",
false
);
response.bodyOutputStream.write("B", 1);
}
}
}
|
