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Add multicast helper function #841

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07dd872
Add multicast helper function
w-zz-w-zz-w Jun 20, 2026
5294336
fix void* to const char*
w-zz-w-zz-w Jun 20, 2026
ff7ec72
new file: text.txt
rorschach-py Jun 20, 2026
1365aec
deleted: text.txt
rorschach-py Jun 20, 2026
6c6c759
Revert " deleted: text.txt"
rorschach-py Jun 20, 2026
8346de8
Revert " new file: text.txt"
rorschach-py Jun 20, 2026
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52 changes: 52 additions & 0 deletions base/hsocket.h
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Original file line number Diff line number Diff line change
Expand Up @@ -283,6 +283,58 @@ HV_INLINE int so_linger(int sockfd, int timeout DEFAULT(1)) {
#endif
}

HV_INLINE int udp_multicast_loop(int sockfd, int value DEFAULT(1))
{
return setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_LOOP, (const char*)&value, sizeof(int));
}
HV_INLINE int udp_multicast_loop6(int sockfd, int value DEFAULT(1))
{
return setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (const char*)&value, sizeof(int));
}

HV_INLINE int udp_multicast_ttl(int sockfd, int value)
{
return setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, (const char*)&value, sizeof(int));
}
HV_INLINE int udp_multicast_ttl6(int sockfd, int value)
{
return setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (const char*)&value, sizeof(int));
}

HV_INLINE int udp_joingroup(int sockfd, const char* group_ip, const char* intf_ip DEFAULT(ANYADDR))
{
struct ip_mreq mreq;
inet_pton(AF_INET, group_ip, &mreq.imr_multiaddr);
inet_pton(AF_INET, intf_ip, &mreq.imr_interface);
return setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const char*)&mreq, sizeof(mreq));
}

HV_INLINE int udp_leavegroup(int sockfd, const char* group_ip, const char* intf_ip DEFAULT(ANYADDR))
{
struct ip_mreq mreq;
inet_pton(AF_INET, group_ip, &mreq.imr_multiaddr);
inet_pton(AF_INET, intf_ip, &mreq.imr_interface);
return setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const char*)&mreq, sizeof(mreq));
}

// intf_idx 填写字符串整数 为了和ipv4保持一致
HV_INLINE int udp_joingroup6(int sockfd, const char* group_ip, const char* intf_idx DEFAULT("0"))
{
struct ipv6_mreq mreq;
inet_pton(AF_INET6, group_ip, &mreq.ipv6mr_multiaddr);
mreq.ipv6mr_interface = atoi(intf_idx);
return setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, (const char*)&mreq, sizeof(mreq));
}

HV_INLINE int udp_leavegroup6(int sockfd, const char* group_ip, const char* intf_idx DEFAULT("0"))
{
struct ipv6_mreq mreq;
inet_pton(AF_INET6, group_ip, &mreq.ipv6mr_multiaddr);
mreq.ipv6mr_interface = atoi(intf_idx);
return setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, (const char*)&mreq, sizeof(mreq));
}


END_EXTERN_C

#endif // HV_SOCKET_H_