| 2640 | |
| 2641 | template <typename BindOrConnect> |
| 2642 | socket_t create_socket(const std::string &host, const std::string &ip, int port, |
| 2643 | int address_family, int socket_flags, bool tcp_nodelay, |
| 2644 | SocketOptions socket_options, |
| 2645 | BindOrConnect bind_or_connect) { |
| 2646 | // Get address info |
| 2647 | const char *node = nullptr; |
| 2648 | struct addrinfo hints; |
| 2649 | struct addrinfo *result; |
| 2650 | |
| 2651 | memset(&hints, 0, sizeof(struct addrinfo)); |
| 2652 | hints.ai_socktype = SOCK_STREAM; |
| 2653 | hints.ai_protocol = 0; |
| 2654 | |
| 2655 | if (!ip.empty()) { |
| 2656 | node = ip.c_str(); |
| 2657 | // Ask getaddrinfo to convert IP in c-string to address |
| 2658 | hints.ai_family = AF_UNSPEC; |
| 2659 | hints.ai_flags = AI_NUMERICHOST; |
| 2660 | } else { |
| 2661 | if (!host.empty()) { node = host.c_str(); } |
| 2662 | hints.ai_family = address_family; |
| 2663 | hints.ai_flags = socket_flags; |
| 2664 | } |
| 2665 | |
| 2666 | #ifndef _WIN32 |
| 2667 | if (hints.ai_family == AF_UNIX) { |
| 2668 | const auto addrlen = host.length(); |
| 2669 | if (addrlen > sizeof(sockaddr_un::sun_path)) return INVALID_SOCKET; |
| 2670 | |
| 2671 | auto sock = socket(hints.ai_family, hints.ai_socktype, hints.ai_protocol); |
| 2672 | if (sock != INVALID_SOCKET) { |
| 2673 | sockaddr_un addr{}; |
| 2674 | addr.sun_family = AF_UNIX; |
| 2675 | std::copy(host.begin(), host.end(), addr.sun_path); |
| 2676 | |
| 2677 | hints.ai_addr = reinterpret_cast<sockaddr *>(&addr); |
| 2678 | hints.ai_addrlen = static_cast<socklen_t>( |
| 2679 | sizeof(addr) - sizeof(addr.sun_path) + addrlen); |
| 2680 | |
| 2681 | fcntl(sock, F_SETFD, FD_CLOEXEC); |
| 2682 | if (socket_options) { socket_options(sock); } |
| 2683 | |
| 2684 | if (!bind_or_connect(sock, hints)) { |
| 2685 | close_socket(sock); |
| 2686 | sock = INVALID_SOCKET; |
| 2687 | } |
| 2688 | } |
| 2689 | return sock; |
| 2690 | } |
| 2691 | #endif |
| 2692 | |
| 2693 | auto service = std::to_string(port); |
| 2694 | |
| 2695 | if (getaddrinfo(node, service.c_str(), &hints, &result)) { |
| 2696 | #if defined __linux__ && !defined __ANDROID__ |
| 2697 | res_init(); |
| 2698 | #endif |
| 2699 | return INVALID_SOCKET; |