 sock (return from <code>write</code>)</li>
<li>socketErrorSetSockOpt: failure in BSD setsockopt function</li>
</ul>

          </section>
          <section class="section task-group-section">
            <div class="task-group">
              <ul>
                <li class="item">
                  <div>
                    <code>
                    <a name="/s:FOCC13SwiftDSSocket13SwiftDSSocket11SocketError9ErrorKind16socketErrorFCNTLFMS2_S2_"></a>
                    <a name="//apple_ref/swift/Element/