        <span class="phrase"><a name="beast.ref.boost__beast__websocket__seed_prng.preconditions"></a></span><a class="link" href="boost__beast__websocket__seed_prng.html#beast.ref.boost__beast__websocket__seed_prng.preconditions">Preconditions</a>
      </h5>
<p>
        This function may not be called after any websocket <a class="link" href="boost__beast__websocket__stream.html" title="websocket::stream"><code class="computeroutput"><span class="identifier">websocket</span><span class="special">::</span>