/*   Here's a small example: it asks for a portbase and a destination and starts   sending packets to that destination.   IMPORTANT:   	This sample was written for unix-like environments. For a Windows   	platform, you'll need to perform Winsock initialisation through   	WSAStartup.*/#include <stdlib.h>#include <stdio.h>#include "rtpsession.h"#include "rtppacket.h"/*   This function checks if there was a RTP error. If so, it displays an error   message and exists.*/void checkerror(int rtperr){	if (rtperr < 0)	{		char *errstr;				// This function gets the error string for a certain error code		errstr = RTPGetErrorString(rtperr);				printf("Error:\n");		printf("%s\n",errstr);		exit(-1);	}}/*   The main routine*/int main(void){	RTPSession sess;	int portbase;	unsigned long destip;	int destport;	char ipstr[256];	int status,i;	char dummybuffer[1024];        /*           First, we'll ask for the necessary information        */			printf("Enter the local portbase\n");	scanf("%d",&portbase);	printf("\n");		printf("Enter the destination IP address\n");	scanf("%s",ipstr);	destip = inet_addr(ipstr);	if (destip == INADDR_NONE)	{		printf("Bad IP address specified\n");		return -1;	}		// The inet_addr function returns a value in network byte order, but	// we need the IP address in host byte order, so we use a call to	// ntohl	destip = ntohl(destip);		printf("Enter the destination port\n");	scanf("%d",&destport);		/*	   Now, we'll create a RTP session, set the destination, send some	   packets and poll for incoming data.	*/		status = sess.Create(portbase);		checkerror(status);		status = sess.AddDestination(destip,destport);	checkerror(status);		for (i = 1 ; i <= 10 ; i++)	{		printf("\nSending packet %d/10\n",i);				// send the packet		status = sess.SendPacket((void *)"1234567890",10,(unsigned char)0,false,10UL);		checkerror(status);				// poll for incoming data		status = sess.PollData();				// check incoming packets		if (sess.GotoFirstSourceWithData())		{			do			{				RTPPacket *pack;								while ((pack = sess.GetNextPacket()) != NULL)				{					// You can examine the data here					printf("Got packet !\n");										// we don't longer need the packet, so					// we'll delete it					delete pack;				}			} while (sess.GotoNextSourceWithData());		}				printf("Press enter to send the next packet\n");		gets(dummybuffer);	}		return 0;}