DataIn Event

Fired when data is received.

Syntax

ANSI (Cross Platform)
virtual int FireDataIn(MCastDataInEventParams *e);

typedef struct {
  const char *Datagram;
  int lenDatagram;
  const char *SourceAddress;
  int SourcePort;
  int reserved;
} MCastDataInEventParams;

Unicode (Windows)
virtual INT FireDataIn(MCastDataInEventParams *e);

typedef struct {
  LPCSTR Datagram;
  INT lenDatagram;
  LPCWSTR SourceAddress;
  INT SourcePort;
  INT reserved;
} MCastDataInEventParams;
- (void)onDataIn:(NSData*)datagram :(NSString*)sourceAddress :(int)sourcePort;
#define EID_MCAST_DATAIN 1

virtual INT IPWORKS_CALL FireDataIn(LPSTR &lpDatagram, INT &lenDatagram, LPSTR &lpszSourceAddress, INT &iSourcePort);

Remarks

The DataIn event is fired every time a new datagram is received.

Datagram contains the packet as sent by the remote host.

SourceAddress contains the IP number (Internet address) of the remote host, and SourcePort contains the port from which the packet originated.

Note that events are not re-entrant. Performing time consuming operations within this event will prevent it from firing again in a timely manner and may impact overall performance.

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IPWorks 2020 C++ Edition - Version 20.0 [Build 8307]