Diff: LPC1768/api/UDPSocket.h

Revision:

0:3edcfa3aba71

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPC1768/api/UDPSocket.h	Sat Jul 21 04:09:54 2012 +0000
@@ -0,0 +1,128 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+/** \file
+UDP Socket header file
+*/
+
+#ifndef UDPSOCKET_H
+#define UDPSOCKET_H
+
+#include "core/net.h"
+#include "core/host.h"
+//Essentially it is a safe interface to NetUdpSocket
+
+///UDP Socket error codes
+enum UDPSocketErr
+{
+  __UDPSOCKET_MIN = -0xFFFF,
+  UDPSOCKET_SETUP, ///<UDPSocket not properly configured
+  UDPSOCKET_IF, ///<Interface has problems, does not exist or is not initialized
+  UDPSOCKET_MEM, ///<Not enough mem
+  UDPSOCKET_INUSE, ///<Interface / Port is in use
+//...
+  UDPSOCKET_OK = 0 ///<Success
+};
+
+///UDP Socket Event(s)
+enum UDPSocketEvent //Only one event here for now, but keeps that model in case we need to implement some others
+{
+  UDPSOCKET_READABLE, ///<Data in buf
+};
+
+class NetUdpSocket;
+enum NetUdpSocketEvent;
+
+///This is a simple UDP Socket class
+/**
+  This class exposes an API to deal with UDP Sockets
+*/
+class UDPSocket
+{
+public:
+  ///Creates a new socket
+  UDPSocket();
+  
+  ///Closes and destroys socket
+  ~UDPSocket(); //close()
+  
+  ///Binds the socket to local host or a multicast address
+  UDPSocketErr bind(const Host& me);
+  
+  ///Sends data
+  /*
+  @param pHost : host to send data to
+  @return a negative error code or the number of bytes transmitted
+  */
+  int /*if < 0 : UDPSocketErr*/ sendto(const char* buf, int len, Host* pHost);
+  
+  ///Receives data
+  /*
+  @param pHost : host from which this piece of data comes from
+  @return a negative error code or the number of bytes received
+  */
+  int /*if < 0 : UDPSocketErr*/ recvfrom(char* buf, int len, Host* pHost);
+
+  /* TODO NTH : printf / scanf helpers that call send/recv */
+
+  ///Closes socket
+  UDPSocketErr close();
+
+  //Callbacks
+  ///Setups callback
+  /**
+  @param pMethod : callback function
+  */  
+  void setOnEvent( void (*pMethod)(UDPSocketEvent) );
+  
+  class CDummy;
+  ///Setups callback
+  /**
+  @param pItem : instance of class on which to execute the callback method
+  @param pMethod : callback method
+  */
+  template<class T> 
+  void setOnEvent( T* pItem, void (T::*pMethod)(UDPSocketEvent) )
+  {
+    m_pCbItem = (CDummy*) pItem;
+    m_pCbMeth = (void (CDummy::*)(UDPSocketEvent)) pMethod;
+  }
+  
+  ///Disables callback
+  void resetOnEvent();
+
+protected:
+  void onNetUdpSocketEvent(NetUdpSocketEvent e);
+  UDPSocketErr checkInst();
+
+private:
+  NetUdpSocket* m_pNetUdpSocket;
+  
+  CDummy* m_pCbItem;
+  void (CDummy::*m_pCbMeth)(UDPSocketEvent);
+  
+  void (*m_pCb)(UDPSocketEvent);
+
+};
+
+#endif