Method send

tests/host/ipc/ipc_client_test.cpp:100–102

    std::vector<std::vector<std::byte>> sends;

    void send(std::span<const std::byte> d) override {
        sends.emplace_back(d.begin(), d.end());
    }

    std::size_t receive(std::span<std::byte> dst) override {
        const std::size_t n = (std::min)(dst.size(), inbound.size() - pos);