Function ReceiveFrom

engine/dlib/src/dlib/socket_posix.cpp:491–531

    }

    Result ReceiveFrom(Socket socket, void* buffer, int length, int* received_bytes,
                       Address* from_addr, uint16_t* from_port)
    {
        int result = 0;
        *received_bytes = 0;

        if (IsSocketIPv4(socket))
        {
            struct sockaddr_in sock_addr = { 0 };
            socklen_t addr_len = sizeof(sock_addr);

            result = recvfrom(socket, buffer, length, 0, (struct sockaddr*) &sock_addr, &addr_len);
            if (result >= 0)
            {
                from_addr->m_family = dmSocket::DOMAIN_IPV4;
                *IPv4(from_addr) = sock_addr.sin_addr.s_addr;
                *from_port = ntohs(sock_addr.sin_port);
                *received_bytes = result;
            }
        }
#if !defined(DM_IPV6_UNSUPPORTED)
        else if (IsSocketIPv6(socket))
        {
            struct sockaddr_in6 sock_addr = { 0 };
            socklen_t addr_len = sizeof(sock_addr);

            result = recvfrom(socket, buffer, length, 0, (struct sockaddr*) &sock_addr, &addr_len);
            if (result >= 0)
            {
                from_addr->m_family = dmSocket::DOMAIN_IPV6;
                memcpy(IPv6(from_addr), &sock_addr.sin6_addr, sizeof(struct in6_addr));
                *from_port = ntohs(sock_addr.sin6_port);
                *received_bytes = result;
            }
        }
#endif // no ipv6
        else
        {
            dmLogError("Failed to receive from remote host, unsupported address family!");
            return RESULT_AFNOSUPPORT;
        }

        return result >= 0 ? RESULT_OK : NativeToResultCompat(DM_SOCKET_ERRNO);
    }