sctpclient02.c

来自「unix网络编程第一卷socket编程书上的全部源代码」· C语言 代码 · 共 45 行

#include	"unp.h"

int
main(int argc, char **argv)
{
	int sock_fd;
	struct sockaddr_in servaddr;
	struct sctp_event_subscribe evnts;
	int echo_to_all=0;
	char byemsg[10];

	if(argc < 2)
		err_quit("Missing host argument - use '%s host [echo]'\n",
		       argv[0]);
	if(argc > 2) {
		printf("Echoing messages to all streams\n");
		echo_to_all = 1;
	}
        sock_fd = Socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
	bzero(&servaddr, sizeof(servaddr));
	servaddr.sin_family = AF_INET;
	servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
	servaddr.sin_port = htons(SERV_PORT);
	Inet_pton(AF_INET, argv[1], &servaddr.sin_addr);

	bzero(&evnts, sizeof(evnts));
	evnts.sctp_data_io_event = 1;
	Setsockopt(sock_fd,IPPROTO_SCTP, SCTP_EVENTS,
		   &evnts, sizeof(evnts));
/* include modified_client02 */
	if(echo_to_all == 0)
		sctpstr_cli(stdin,sock_fd,(SA *)&servaddr,sizeof(servaddr));
	else
		sctpstr_cli_echoall(stdin,sock_fd,(SA *)&servaddr,sizeof(servaddr));
	strcpy(byemsg,"goodbye");
	Sctp_sendmsg(sock_fd, byemsg, strlen(byemsg), 
		     (SA *)&servaddr, sizeof(servaddr), 
		     0,
		     MSG_ABORT,
		     0, 0, 0);
	Close(sock_fd);
/* end modified_client02 */
	return(0);
}