diff options
Diffstat (limited to 'src/os/unix/ngx_udp_sendmsg_chain.c')
-rw-r--r-- | src/os/unix/ngx_udp_sendmsg_chain.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/os/unix/ngx_udp_sendmsg_chain.c b/src/os/unix/ngx_udp_sendmsg_chain.c index 275966c69..e9e6f7091 100644 --- a/src/os/unix/ngx_udp_sendmsg_chain.c +++ b/src/os/unix/ngx_udp_sendmsg_chain.c @@ -316,6 +316,71 @@ ngx_set_srcaddr_cmsg(struct cmsghdr *cmsg, struct sockaddr *local_sockaddr) return 0; } + +ngx_int_t +ngx_get_srcaddr_cmsg(struct cmsghdr *cmsg, struct sockaddr *local_sockaddr) +{ + +#if (NGX_HAVE_IP_RECVDSTADDR) + struct in_addr *addr; + struct sockaddr_in *sin; +#elif (NGX_HAVE_IP_PKTINFO) + struct in_pktinfo *pkt; + struct sockaddr_in *sin; +#endif + +#if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) + struct in6_pktinfo *pkt6; + struct sockaddr_in6 *sin6; +#endif + + + #if (NGX_HAVE_IP_RECVDSTADDR) + + if (cmsg->cmsg_level == IPPROTO_IP + && cmsg->cmsg_type == IP_RECVDSTADDR + && local_sockaddr->sa_family == AF_INET) + { + addr = (struct in_addr *) CMSG_DATA(cmsg); + sin = (struct sockaddr_in *) local_sockaddr; + sin->sin_addr = *addr; + + return NGX_OK; + } + +#elif (NGX_HAVE_IP_PKTINFO) + + if (cmsg->cmsg_level == IPPROTO_IP + && cmsg->cmsg_type == IP_PKTINFO + && local_sockaddr->sa_family == AF_INET) + { + pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); + sin = (struct sockaddr_in *) local_sockaddr; + sin->sin_addr = pkt->ipi_addr; + + return NGX_OK; + } + +#endif + +#if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) + + if (cmsg->cmsg_level == IPPROTO_IPV6 + && cmsg->cmsg_type == IPV6_PKTINFO + && local_sockaddr->sa_family == AF_INET6) + { + pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); + sin6 = (struct sockaddr_in6 *) local_sockaddr; + sin6->sin6_addr = pkt6->ipi6_addr; + + return NGX_OK; + } + +#endif + + return NGX_DECLINED; +} + #endif |