NetMQ.Poller.ContainsSocket C# (CSharp) Method

        public bool ContainsSocket(NetMQSocket socket)
        {
            return m_sockets.Contains(socket);
        }

        /// <summary>
        /// Create a new instance of a Proxy (NetMQ.Proxy)
        /// with the given sockets to serve as a front-end, a back-end, and a control socket.
        /// </summary>
        /// <param name="frontend">the socket that messages will be forwarded from</param>
        /// <param name="backend">the socket that messages will be forwarded to</param>
        /// <param name="control">this socket will have messages also sent to it - you can set this to null if not needed</param>
        /// <param name="poller">an optional external poller to use within this proxy</param>
        /// <exception cref="InvalidOperationException"><paramref name="poller"/> is not <c>null</c> and either <paramref name="frontend"/> or <paramref name="backend"/> are not contained within it.</exception>
        public Proxy([NotNull] NetMQSocket frontend, [NotNull] NetMQSocket backend, [CanBeNull] NetMQSocket control = null, Poller poller = null)
        {
            if (poller != null)
            {
                if (!poller.ContainsSocket(backend) || !poller.ContainsSocket(frontend))
                {
                    throw new InvalidOperationException("When using an external poller, both the frontend and backend sockets must be added to it.");
                }

                m_externalPoller = true;
                m_poller         = poller;
            }

            m_frontend = frontend;
            m_backend  = backend;
            m_control  = control;
        }