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Frank Ch. Eigler
0b454c7e19
PR27701 implemented curl handle reuse in debuginfod_client objects, but with an unexpected bug. Server responses returning an error "latched" because the curl_easy handles for error cases weren't all systematically removed from the curl multi handle. This prevented their proper re-addition the next time. This version of the code simplfies matters by making only the curl curl_multi handle long-lived. This turns out to be enough, because it can maintain a pool of long-lived http/https connections and related data, and lend them out to short-lived curl_easy handles. This mode handles errors or hung downloads even better, because the easy handles don't undergo complex state transitions between reuse. A new test case confirms this correction via the federating debuginfod instance (cleaning caches between subtests to make sure http* is being used and reused). Signed-off-by: Frank Ch. Eigler <fche@redhat.com>