原文網址： http://www.cnblogs.com/csdev

Networkcomms 是一款C# 語言編寫的TCP/UDP通訊框架  作者是英國人  以前是收費的 目前作者已經開源  許可是:Apache License v2

開源地址是:https://github.com/MarcFletcher/NetworkComms.Net

 public enum ConnectionState
    {
        /// <summary>
        /// The state of this connection is undefined. This is the starting state of new connections.
        /// 未定義   初始狀態
        /// </summary>
        Undefined,

        /// <summary>
        /// The connection is in the process of being established/initialised.
        /// 建立中
        /// </summary>
        Establishing,

        /// <summary>
        /// The connection has been successfully established.
        /// 建立完成
        /// </summary>
        Established,

        /// <summary>
        /// The connection has been shutdown.
        /// 關閉
        /// </summary>
        Shutdown
    }

這各類是個列舉類，用來判定連線的狀態