title: Inet framework: Send message from one host to another
body: <p>I am new to Omnet++ and I am trying to simulate a Wifi network. I have successfully created a network consisting of an AP and some nodes and all the nodes are able to connect to the AP.</p>
  
  <p>What I want to do is that once all the nodes are connected to the AP, a node (based on its IP address) should send a message to another node in the network. I have created the .msg file with all the required fields and it is successfully compiled by the message compiler to the corresponding _m.h and _m.cc files. I want this message to be sent to the other node.
  How to proceed with this? Iknow it has to do something with the handleMessage() function but I can't find the file containing that function.</p>
  
  <p>Thanks in advance for any kind of help.</p>