html#type-writer">Seq.writer</a></span> <span class="arrow">&#45;&gt;</span></span> <span><span>string <a href="../../Seq/index.html#type-t">Seq.t</a></span> <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span>)</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span class="type-var">'a</span> <a href="#type-handler">handler</a></span></span></code></div><div class="spec-doc"><p><code>bidirectional_streaming ~f write read</code> sets up the sending and receiving logic using 