16 lines
361 B
C
16 lines
361 B
C
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include "socket.h"
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#include "byte.h"
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int socket_mcleave4(int s,const char ip[4])
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{
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struct ip_mreq opt;
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byte_copy(&opt.imr_multiaddr.s_addr,4,ip);
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byte_zero(&opt.imr_interface.s_addr,4);
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return setsockopt(s,IPPROTO_IP,IP_DROP_MEMBERSHIP,&opt,sizeof opt);
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}
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