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Cory Benfield
1aec5d7d0e
Motivation: Currently when either we or the server send Connection: close, we correctly do not return that connection to the pool. However, we rely on the server actually performing the connection closure: we never call close() ourselves. This is unnecessarily optimistic: a server may absolutely fail to close this connection. To protect our own file descriptors, we should make sure that any connection we do not return the pool is closed. Modifications: If we think a connection is closing when we release it, we now call close() on it defensively. Result: We no longer leak connections when the server fails to close them. Fixes #324.