136     struct msghdr header;  in sendOnInterface()  local
137     memset(&header, 0, sizeof(header));  in sendOnInterface()
143     header.msg_name = &addr;  in sendOnInterface()
144     header.msg_namelen = sizeof(addr);  in sendOnInterface()
145     header.msg_iov = &iov;  in sendOnInterface()
146     header.msg_iovlen = 1;  in sendOnInterface()
147     header.msg_control = &controlData;  in sendOnInterface()
148     header.msg_controllen = sizeof(controlData);  in sendOnInterface()
150     struct cmsghdr* controlHeader = CMSG_FIRSTHDR(&header);  in sendOnInterface()
159     ssize_t status = ::sendmsg(mSocketFd, &header, 0);  in sendOnInterface()
220     struct msghdr header;  in sendRawUdp()  local
221     memset(&header, 0, sizeof(header));  in sendRawUdp()
222     header.msg_name = &dest;  in sendRawUdp()
223     header.msg_namelen = sizeof(dest);  in sendRawUdp()
224     header.msg_iov = iov;  in sendRawUdp()
225     header.msg_iovlen = sizeof(iov) / sizeof(iov[0]);  in sendRawUdp()
227     ssize_t res = ::sendmsg(mSocketFd, &header, 0);  in sendRawUdp()
237     struct msghdr header;  in receiveFromInterface()  local
238     memset(&header, 0, sizeof(header));  in receiveFromInterface()
242     header.msg_iov = &iov;  in receiveFromInterface()
243     header.msg_iovlen = 1;  in receiveFromInterface()
244     header.msg_control = &controlData;  in receiveFromInterface()
245     header.msg_controllen = sizeof(controlData);  in receiveFromInterface()
247     ssize_t bytesRead = ::recvmsg(mSocketFd, &header, 0);  in receiveFromInterface()
252     if (header.msg_controllen >= sizeof(struct cmsghdr)) {  in receiveFromInterface()
253         for (struct cmsghdr* ctrl = CMSG_FIRSTHDR(&header);  in receiveFromInterface()
255              ctrl = CMSG_NXTHDR(&header, ctrl)) {  in receiveFromInterface()