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/// @param limit The max number of file descriptors to wait for.
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/// @return A vector of the file descriptors that have activity.
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boost::shared_ptr<std::vector<struct pollfd> > waitForNetData(int limit, struct pollfd *fds);
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fd_set waitForNetData(int limit, fd_set data);
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fd_set waitForNetData(std::vector<int> &data);