Function handle_client

app/server/http.cpp:263–276

        std::ostringstream header;
        header << std::hex << data.size() << "\r\n";
        send_all(socket_, header.str());
        send_all(socket_, std::string(data));
        send_all(socket_, "\r\n");
    }

    void finish() {
        send_all(socket_, "0\r\n\r\n");
    }

private:
    SocketHandle socket_;
};

UniqueSocket bind_listen_socket(const std::string & host, int port) {
    UniqueSocket socket_handle(socket(AF_INET, SOCK_STREAM, 0));
    if (socket_handle.get() == kInvalidSocket) {
        throw std::runtime_error("could not create listen socket");