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Posted to dev@shindig.apache.org by jo...@gmail.com on 2010/03/24 22:07:38 UTC
Treat Expires: as 0 (issue735041)
Reviewers: shindig.remailer_gmail.com,
Description:
Per RFC2616, section 14.21:
"HTTP/1.1 clients and caches MUST treat other invalid date formats,
especially including the value "0", as in the past (i.e., "already
expired")."
So if you see a Date header but you can't parse it you should return 0
not -1 from getExpiresTime. Unless parseRfc1123Date always returns
zero for dates it can't parse in which case you're already set.
Please review this at http://codereview.appspot.com/735041/show
Affected files:
java/gadgets/src/main/java/org/apache/shindig/gadgets/http/HttpResponse.java
java/gadgets/src/test/java/org/apache/shindig/gadgets/http/HttpResponseTest.java
Index:
java/gadgets/src/main/java/org/apache/shindig/gadgets/http/HttpResponse.java
===================================================================
---
java/gadgets/src/main/java/org/apache/shindig/gadgets/http/HttpResponse.java
(revision 922057)
+++
java/gadgets/src/main/java/org/apache/shindig/gadgets/http/HttpResponse.java
(working copy)
@@ -391,6 +391,12 @@
Date expiresDate = DateUtil.parseRfc1123Date(expires);
if (expiresDate != null) {
return expiresDate.getTime();
+ } else {
+ // Per RFC2616, 14.21
(http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.21):
+ // "HTTP/1.1 clients and caches MUST treat other invalid date
formats,
+ // especially including the value "0", as in the past
(i.e., "already
+ // expired")."
+ return 0;
}
}
return -1;
Index:
java/gadgets/src/test/java/org/apache/shindig/gadgets/http/HttpResponseTest.java
===================================================================
---
java/gadgets/src/test/java/org/apache/shindig/gadgets/http/HttpResponseTest.java
(revision 922057)
+++
java/gadgets/src/test/java/org/apache/shindig/gadgets/http/HttpResponseTest.java
(working copy)
@@ -289,6 +289,18 @@
// Second rounding makes this n-1.
assertTtlOk(maxAge, response);
}
+
+ @Test
+ public void testExpiresZeroValue() throws Exception {
+ HttpResponse response = new
HttpResponseBuilder().addHeader("Expires", "0").create();
+ assertEquals(0, roundToSeconds(response.getCacheExpiration()));
+ }
+
+ @Test
+ public void testExpiresUnknownValue() throws Exception {
+ HttpResponse response = new
HttpResponseBuilder().addHeader("Expires", "howdy").create();
+ assertEquals(0, roundToSeconds(response.getCacheExpiration()));
+ }
@Test
public void testMaxAgeNoDate() throws Exception {
@@ -388,16 +400,13 @@
@Test
public void testRetryAfter() {
HttpResponse response;
- String nowPlus60 =
DateUtil.formatRfc1123Date(System.currentTimeMillis() + 60 * 1000L);
- for (String date : Arrays.asList("60", nowPlus60)) {
- for (int rc : Arrays.asList(HttpResponse.SC_INTERNAL_SERVER_ERROR,
HttpResponse.SC_GATEWAY_TIMEOUT, HttpResponse.SC_BAD_REQUEST)) {
- response = new HttpResponseBuilder()
- .setHttpStatusCode(rc)
- .setHeader("Retry-After","60")
- .create();
- long ttl = response.getCacheTtl();
- assertTrue(ttl <= 60 * 1000L && ttl > 0);
- }
+ for (int rc : Arrays.asList(HttpResponse.SC_INTERNAL_SERVER_ERROR,
HttpResponse.SC_GATEWAY_TIMEOUT, HttpResponse.SC_BAD_REQUEST)) {
+ response = new HttpResponseBuilder()
+ .setHttpStatusCode(rc)
+ .setHeader("Retry-After","60")
+ .create();
+ long ttl = response.getCacheTtl();
+ assertTrue(ttl <= 60 * 1000L && ttl > 0);
}
}