84     struct msghdr       msg;  in transmitPacket()  local
105     msg.msg_name       = &peerAddr;  in transmitPacket()
106     msg.msg_namelen    = sizeof(peerAddr);  in transmitPacket()
107     msg.msg_control    = control;  in transmitPacket()
108     msg.msg_controllen = static_cast<decltype(msg.msg_controllen)>(sizeof(control));  in transmitPacket()
109     msg.msg_iov        = &iov;  in transmitPacket()
110     msg.msg_iovlen     = 1;  in transmitPacket()
111     msg.msg_flags      = 0;  in transmitPacket()
116         cmsg             = CMSG_FIRSTHDR(&msg);  in transmitPacket()
130         cmsg             = CMSG_NXTHDR(&msg, cmsg);  in transmitPacket()
144     msg.msg_controllen = static_cast<socklen_t>(controlLength);  in transmitPacket()
146     msg.msg_controllen           = controlLength;  in transmitPacket()
149     rval = sendmsg(aFd, &msg, 0);  in transmitPacket()
168     struct msghdr       msg;  in receivePacket()  local
174     msg.msg_name       = &peerAddr;  in receivePacket()
175     msg.msg_namelen    = sizeof(peerAddr);  in receivePacket()
176     msg.msg_control    = control;  in receivePacket()
177     msg.msg_controllen = sizeof(control);  in receivePacket()
178     msg.msg_iov        = &iov;  in receivePacket()
179     msg.msg_iovlen     = 1;  in receivePacket()
180     msg.msg_flags      = 0;  in receivePacket()
182     rval = recvmsg(aFd, &msg, 0);  in receivePacket()
186 …  for (struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); cmsg != nullptr; cmsg = CMSG_NXTHDR(&msg, cmsg))  in receivePacket()