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yhirose
801bf2e0d2
The event loop reads through open_stream(), which takes the socket out
of the Client, so the client_.stop() in stop() could not reach it.
stop(), and the destructor with it, waited until the server sent
something or the read timeout passed, 300 seconds by default.
Shutting the socket down from stop() does not wake a read waiting in
WSAPoll on Windows, so 3744227 was reverted. A stream now takes an
interrupt check instead: while one is set, it waits for data in 100 ms
slices and gives up once the check returns true, as the server's
keep-alive wait does with its flag. SSEClient sets one that turns true
when stop() is called. Streams without one wait as before.
SSEIntegrationTest.ManualStop now ends its stream with the fixture's
flag. Its server outlives the test body, and the faster stop() let the
stream read a local of the body that had returned.
