// Returns next data from a buffer if possible
// If found, returns true; if not, false.
// If found, sets peer_id and dst
bool getFromBuffers(session_t &peer_id, SharedBuffer<u8> &dst);
// Returns next data from a buffer if possible
// If found, returns true; if not, false.
// If found, sets peer_id and dst
bool getFromBuffers(session_t &peer_id, SharedBuffer<u8> &dst);