Dependents: SimpleLCDClock readCard2Twitter_http AnalogClock_StepperMotor_NTP ServoCamV1
Diff: if/net/netudpsocket.h
- Revision:
- 0:3717b703f76d
- Child:
- 1:e52ec2a24c6a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/if/net/netudpsocket.h Mon May 24 10:23:42 2010 +0000 @@ -0,0 +1,83 @@ +#ifndef NETUDPSOCKET_H +#define NETUDPSOCKET_H + +#include "net.h" +#include "host.h" + +#include <queue> +using std::queue; + +//Implements a Berkeley-like socket if +//Can be interfaced either to lwip or a Telit module + +enum NetUdpSocketErr +{ + __NETUDPSOCKET_MIN = -0xFFFF, + NETUDPSOCKET_SETUP, //NetUdpSocket not properly configured + NETUDPSOCKET_IF, //If has problems + NETUDPSOCKET_MEM, //Not enough mem + NETUDPSOCKET_INUSE, //If/Port is in use +//... + NETUDPSOCKET_OK = 0 +}; + +enum NetUdpSocketEvent //Only one lonely event here... but who knows, maybe some day there'll be another one! +{ + NETUDPSOCKET_READABLE, //Data in buf +}; + + +class NetUdpSocket +{ +public: + NetUdpSocket(); + virtual ~NetUdpSocket(); //close() + + virtual NetUdpSocketErr bind(const Host& me) = 0; + + virtual int /*if < 0 : NetUdpSocketErr*/ sendto(const char* buf, int len, Host* pHost) = 0; + virtual int /*if < 0 : NetUdpSocketErr*/ recvfrom(char* buf, int len, Host* pHost) = 0; + + /* TODO NTH : printf / scanf helpers that call send/recv */ + + virtual NetUdpSocketErr close() = 0; + + virtual NetUdpSocketErr poll() = 0; + + class CDummy; + //Callbacks + template<class T> + //Linker bug : Must be defined here :( + void setOnEvent( T* pItem, void (T::*pMethod)(NetUdpSocketEvent) ) + { + m_pCbItem = (CDummy*) pItem; + m_pCbMeth = (void (CDummy::*)(NetUdpSocketEvent)) pMethod; + } + + void resetOnEvent(); //Disable callback + +protected: + void queueEvent(NetUdpSocketEvent e); + void discardEvents(); + void flushEvents(); //to be called during polling + + Host m_host; + Host m_client; + + friend class Net; + int m_refs; + + bool m_closed; + bool m_removed; + +private: + //We do not want to execute user code in interrupt routines, so we queue events until the server is polled + //If we port this to a multithreaded OS, we could avoid this (however some functions here are not thread-safe, so beware ;) ) + void onEvent(NetUdpSocketEvent e); //To be called on poll + CDummy* m_pCbItem; + void (CDummy::*m_pCbMeth)(NetUdpSocketEvent); + queue<NetUdpSocketEvent> m_events; + +}; + +#endif