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6f1ecc8df7
* streamline socket read/write hot path This avoids some unnecessary memory copying on the hot path of noise / mplex, as well as getting rid of a few futures - profiling shows that this is one of the main culprits of small memory allocations, which makes sense - this is where gossip fan-out happens. * fewer futures (and corresponding closures) when sending lpchannel messages * avoid data copies when encrypting and framing noise messages * avoid copying tuple when reading noise data (poor c codegen) * fix setting eof flag in secure read * write noise frames in one go ...and closing secure socket once is enough