title: test the TCP channel created via adb
body: <p>I have created a TCP channel  like:</p>
  
  <pre><code>adb forward tcp:5000 tcp:6000
  adb reverse tcp:6000 tcp:7000
  </code></pre>
  
  <p>I wanted to send a text massage from my android device and see it on my host.</p>
  
  <p>I have no access to <code>netcat</code>. </p>
  
  <p>Thanks</p>