On 11/03/11 12:13, Guy Bashkansky wrote:
I'm trying to implement the If-Unmodified-Since (IUMS) capability in Squid 2.x. When a client IUMS request comes, I raise a new request flag iums, store the iums time, and send an IMS request to the origin. When the origin response comes back, I modify the store entry memory objectâs reply status according to the IUMS time logic in both httpProcessReplyHeader() and clientHandleIMSReply(). This works either when the IUMS precondition is satisfied (then I send 200 to client, instead of 304 typically) or for the cache *hit only* when the IUMS precondition is unsatisfied (then I send 412 to client, instead of 200 typically). However, when the IUMS precondition is unsatisfied upon cache *miss*, the origin's 200 response is still being sent to client, even after I modify the store entry memory objectâs reply status to 412 in httpProcessReplyHeader(). I cannot figure out how and when the status is being restored back to 200.
On MISS the client reply is passed through. There may be an IMS check there somewhere that need updating. The reply status should be updated at the point of either parsing the status line, or completed parsing the reply headers.
Iâve set gdb data-watch breakpoints over the store entry memory objectâs reply status. But then, later during the execution, gdb reports watchpoint expression error: bad address. Iâm stuck now, and would really appreciate any help. Thanks.
Amos -- Please be using Current Stable Squid 2.7.STABLE9 or 3.1.11 Beta testers wanted for 3.2.0.5
