AutoDiscoveryBroadcaster.h

00001 #ifndef AUTO_DISCOVERY_BROADCASTER_H
00002 #define AUTO_DISCOVERY_BROADCASTER_H
00003 
00004 #include "mbed.h"
00005 #include "UDPSocket.h"
00006 #include "BroadcastMessage.h"
00007 
00008 /*
00009     Class: AutoDiscoveryBroadcaster
00010     Periodically sends out hostname
00011     and IP address on UDP port 2010
00012 */
00013 class AutoDiscoveryBroadcaster {
00014 public:
00015     // Constructor: AutoDiscoveryBroadcaster
00016     // Creates the UDP sockets
00017     AutoDiscoveryBroadcaster();
00018     // Destructor: ~AutoDiscoveryBroadcaster
00019     // Deletes the UDP socket
00020     ~AutoDiscoveryBroadcaster();
00021     /*
00022         Function: start
00023         Starts periodically sending out the information datagrams
00024         Parameters:
00025             udpPort - The UDP port to send on (default 2010)
00026             period  - The period between broadcasts
00027      */
00028     void start(int udpPort=2010, int period=5);
00029     /*
00030         Function: stop
00031         Stops sending out the information datagrams
00032      */
00033     void stop();
00034 private:
00035     // Variable: udpSock
00036     // The UDP socket
00037     UDPSocket* udpSock;
00038     // Variable: running
00039     // Flag to indicate whether we're running or not
00040     char running;
00041     // Variable: ticker
00042     // Ticker used to periodically call broadcast()
00043     Ticker ticker;
00044     Host host;
00045     
00046     // Function: broadcast
00047     // The method that actually broadcasts the information
00048     // about this mbed
00049     void broadcast();
00050     
00051     BroadcastMessage msg;
00052 };
00053 
00054 #endif