Presently, the wsgi server allows persist connections. Hence even after
the response is sent to the client, it doesn't close the client socket
connection. Because of this problem, the green thread is not released
back to the pool.
In order to close the client socket connection explicitly after the
response is sent and read successfully by the client, you simply have to
set keepalive to False when you create a wsgi server.
Icehouse backport note: socket_timeout was dropped, it was introduced
in 0.14[*] and Icehouse eventlet lower bound is 0.13
[*] 7d4916f014
DocImpact:
Added wsgi_keep_alive option (default=True).
SecurityImpact
Closes-Bug: #1361360
Change-Id: I3a361d6590d1800b85791f23ac1cdfd79815341b
(cherry picked from commit 8e7a0dbb12)
4cdbefc202