fix mixture of sync/async sockets in IOPubThread #1275
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all sockets are explicitly sync until/except we are in the coroutines that will await them - consistent behavior of send for child pipe and main process sockets - avoids unsafe assumption that send is greedy on async sockets - avoids potential issues creating async objects in one thread, then using them in another in a different event loop - always creates/uses the right types, regardless of input socket - address some typing lint
instead, keep same context but use `socket_class` kwarg to specify socket classes shadow context prevents cleanup of untracked sockets via ctx.destroy because it disconnects socket bookkeeping
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ok, actually all correct now, I think |
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all sockets are explicitly sync until/except we are in the coroutines that will await them, whereas there was an ambiguous mixture of sync and async sockets before
found while working on ipython/ipyparallel#895