udpsource.c

一个很好的unix网络编程框架

#include "etcp.h"
int main( int argc, char **argv )
{
	struct sockaddr_in peer;
	SOCKET s;
	int rc;
	int datagrams;
	int dgramsz = 1440;
	char buf[ 1440 ];

	INIT();
	datagrams = atoi( argv[ 2 ] );
	if ( argc > 3 )
		dgramsz = atoi( argv[ 3 ] );
	s = udp_client( argv[ 1 ], "9000", &peer );
	while ( datagrams-- > 0 )
	{
		rc = sendto( s, buf, dgramsz, 0,
			( struct sockaddr * )&peer, sizeof( peer ) );
		if ( rc <= 0 )
			error( 0, errno, "sendto failed" );
	}
	sendto( s, "", 0, 0,
		( struct sockaddr * )&peer, sizeof( peer ) );
	EXIT( 0 );
}