std::size_t winrt_ssocket_service_base::do_get_endpoint()

in demo_example/asio/asio/detail/impl/winrt_ssocket_service_base.ipp [165:228]

• 62 lines of code
• 9 McCabe index (conditional complexity)

std::size_t winrt_ssocket_service_base::do_get_endpoint(
    const base_implementation_type& impl, bool local,
    void* addr, std::size_t addr_len, asio::error_code& ec) const
{
  if (!is_open(impl))
  {
    ec = asio::error::bad_descriptor;
    return addr_len;
  }

  try
  {
    std::string addr_string = winrt_utils::string(local
        ? impl.socket_->Information->LocalAddress->CanonicalName
        : impl.socket_->Information->RemoteAddress->CanonicalName);
    unsigned short port = winrt_utils::integer(local
        ? impl.socket_->Information->LocalPort
        : impl.socket_->Information->RemotePort);
    unsigned long scope = 0;

    switch (reinterpret_cast<const socket_addr_type*>(addr)->sa_family)
    {
    case ASIO_OS_DEF(AF_INET):
      if (addr_len < sizeof(sockaddr_in4_type))
      {
        ec = asio::error::invalid_argument;
        return addr_len;
      }
      else
      {
        socket_ops::inet_pton(ASIO_OS_DEF(AF_INET), addr_string.c_str(),
            &reinterpret_cast<sockaddr_in4_type*>(addr)->sin_addr, &scope, ec);
        reinterpret_cast<sockaddr_in4_type*>(addr)->sin_port
          = socket_ops::host_to_network_short(port);
        ec = asio::error_code();
        return sizeof(sockaddr_in4_type);
      }
    case ASIO_OS_DEF(AF_INET6):
      if (addr_len < sizeof(sockaddr_in6_type))
      {
        ec = asio::error::invalid_argument;
        return addr_len;
      }
      else
      {
        socket_ops::inet_pton(ASIO_OS_DEF(AF_INET6), addr_string.c_str(),
            &reinterpret_cast<sockaddr_in6_type*>(addr)->sin6_addr, &scope, ec);
        reinterpret_cast<sockaddr_in6_type*>(addr)->sin6_port
          = socket_ops::host_to_network_short(port);
        ec = asio::error_code();
        return sizeof(sockaddr_in6_type);
      }
    default:
      ec = asio::error::address_family_not_supported;
      return addr_len;
    }
  }
  catch (Platform::Exception^ e)
  {
    ec = asio::error_code(e->HResult,
        asio::system_category());
    return addr_len;
  }
}