FutureSync<void> TransportSocketCache::disconnect(MessageSocketPtr socket)
{
Promise<void> promiseSocketRemoved;
{
auto syncDisconnectInfos = _disconnectInfos.synchronize();
// TODO: Remove Promise<void>{} when get rid of VS2013.
syncDisconnectInfos->push_back(DisconnectInfo{socket, Promise<void>{}});
promiseSocketRemoved = syncDisconnectInfos->back().promiseSocketRemoved;
}
// We wait that the socket has been disconnected _and_ the `disconnected`
// signal has been received by the cache.
FutureBarrier<void> barrier;
barrier.addFuture(promiseSocketRemoved.future());
barrier.addFuture(socket->disconnect());
Promise<void> promise;
return barrier.future().then([=](const std::vector<Future<void>>& v) mutable {
const auto isInError = [](const Future<void>& f) {
return f.hasError();
};
if (std::any_of(begin(v), end(v), isInError))
{
promise.setError("disconnect error");
return;
}
promise.setValue(0);
});
}
