Fix patching of is_connection_dropped from urllib3 (issue #468) #605
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Fix patching of is_connection_dropped from urllib3
With old patching method, urllib3 never detected TCP connections that
were closed by the server side. For example, persistent HTTP connection
that were closed by the server (e.g., due to timeout) were not
recognized as closed. Any following requests that attempted to reuse
the same, closed connection caused the following failure:
Fixes: #468