able, 0 on timeout, -0 if an error occurred.</span></div> <div class="line"><a name="l00000"></a><span class="lineno">   00</span>&#000;<span class="comment"> *</span></div> <div class="line"><a name="l00000"></a><span class="lineno">   00</span>&#000;<span class="comment"> * @note</span></div> <div class="line"><a name="l00000"></a><span class="lineno">   00</span>&#000;<span class="comment"> *  