sctp_check_notify.c

unix网络编程第一卷socket编程书上的全部源代码

#include	"unp.h"

void
check_notification(int sock_fd,char *recvline,int rd_len)
{
	union sctp_notification *snp;
	struct sctp_assoc_change *sac;
	struct sockaddr_storage *sal,*sar;
	int num_rem, num_loc;

	snp = (union sctp_notification *)recvline;
	if(snp->sn_header.sn_type == SCTP_ASSOC_CHANGE) {
		sac = &snp->sn_assoc_change;
		if((sac->sac_state == SCTP_COMM_UP) ||
		   (sac->sac_state == SCTP_RESTART)) {
			num_rem = sctp_getpaddrs(sock_fd,sac->sac_assoc_id,&sar);
			printf("There are %d remote addresses and they are:\n",
			       num_rem);
			sctp_print_addresses(sar,num_rem);
			sctp_freepaddrs(sar);

			num_loc = sctp_getladdrs(sock_fd,sac->sac_assoc_id,&sal);
			printf("There are %d local addresses and they are:\n",
			       num_loc);
			sctp_print_addresses(sal,num_loc);
			sctp_freeladdrs(sal);
		}
	}

}