title: Change internal data with Rserve
body: <p>I have a large data.frame loaded to memory in an R instance on one machine, and I'm using Rserve to allow access to this data from remote clients. I would like to be able to remotely make changes to the data.frame, like adding a column or changing a value, and I would like these changes to be available to other clients. </p>
  
  <pre><code># server side
  &gt; xxx&lt;-data.frame(a=1:3,b=4:6)
  &gt; run.Rserve(port = 6311, ...)
  
  # client side
  &gt; cc&lt;-RSconnect(port=6311, ...)
  &gt; RSeval(cc,'xxx$c&lt;-7:9')
  &gt; RSeval(cc,'xxx')
    a b c
  1 1 4 7
  2 2 5 8
  3 3 6 9
  </code></pre>
  
  <p>However, when I connect with a second client it does not see the changes:</p>
  
  <pre><code># another client
  &gt; cc2&lt;-RSconnect(port=6311, ...)
  &gt; RSeval(cc2,'xxx')
    a b
  1 1 4
  2 2 5
  3 3 6
  </code></pre>
  
  <p>When the server is stopped the internal data is also unchanged. The changes are only available to the client that made them, not really what I need. </p>
  
  <p>Is there some way to make this work?</p>