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    <p>With mscomm control exists the same problem. Work with async events always its harded. </p> <p>First that is my personal way of deal with it probably exist other way better. so it is one option more.</p> <p>I've run into this problem more than one times and it often i forget how deal with that. so that also be my personal reference</p> <p>First the idea</p> <pre><code>create time of expiration when it became to be reached the information should be complete </code></pre> <p>well we need understand how the events happen</p> <p>Graphic view that be the dead time, the dead time just is a time period</p> <p><img src="https://i.stack.imgur.com/hoNoh.png" alt="Dead Time view"></p> <p>Now in vb6 when async events happen also need to happen two actions in different instant but are tested in the same moment</p> <pre><code>Action #1 that action update the current time </code></pre> <p><img src="https://i.stack.imgur.com/Bjjy2.png" alt="Recurrent time"></p> <pre><code>Actions #2 that is limited to update the time current time for async event </code></pre> <p><img src="https://i.stack.imgur.com/ZwxMW.png" alt="update time for async event"></p> <pre><code>Both event are combined on one infinity loop method the purpose is check current time against the current time of async event </code></pre> <p><img src="https://i.stack.imgur.com/WhIM4.png" alt="verification for both counter times"></p> <p>Also we will need some utility for keep track of time i used the win api GetTickCount</p> <p>In mscomm also we will need add flag and string for know if some was received it for not wait so much in call to interface in the port</p> <p>Also that code can throw event it for reuse and isolate</p> <p>now see the skeleton of vb6 class</p> <pre><code>class Module SocketReceptorVb6 Private Declare Function GetTickCount Lib "kernel32" () As Long ' API tick withevents _tcpControll as Winsock private m_currentState As Eventstate 'is a enumerate Waiting, Receiving private m_currentTimeAsynEvent As Long ' current time for async event private m_buffer As String private m_timeOut as Long Public Event StreamReceived(ByVal stream As String) 'Event completed Property TimeOut private sub Class_Initialize() m_currentState = Waiting end sub sub tcpControl_DataArrival(bytesTotal) sub Receiving sub InitFlags End Class </code></pre> <p>well now look at the 3 methods more closely</p> <pre><code>InitFlags Method </code></pre> <p>That clean variables and prepare the ambient, see the content</p> <pre><code>m_currentState = Waiting //state of the process m_buffer = vbNullString //reset the buffer used for the information </code></pre> <p>  </p> <pre><code>tcpControl_DataArrival Method </code></pre> <p>That method have the next responsibilities</p> <pre><code> -update buffer -initialize infinity loop -update m_currentTimeAsynEvent </code></pre> <p>content of the method</p> <pre><code>Dim sBuff As String wskConnect.GetData sBuff, vbString m_buffer = m_buffer &amp; sBuff ' update time for Asyn Event m_currentTimeAsynEvent = GetTickCount() if m_currentState = Waiting then m_currentState = Receiving InfinityLoop() end if </code></pre> <p>  </p> <pre><code>InfinityLoop Method verify that the expiration time has been reached </code></pre> <p> </p> <pre><code>Content method Dim current_time As Long ' the time point o current time Do current_time = GetTickCount() ' timeout reach, exit of loop If current_time &gt; m_currentTimeAsynEvent + m_timeOut Then Exit Do End If DoEvents Loop RaiseEvent StreamReceived(m_buffer) InitFlags 'Reset flags and variables </code></pre> <p>Note: <strong>that code expected lead with a single stream not multiple socket responses</strong></p>
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