using System;
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using System.Diagnostics;
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namespace Bro.Common.Link
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{
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/// <summary>
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/// 设备的连接基类
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/// </summary>
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public abstract class LinkBase
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{
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// 默认保存数据缓存长度
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public const int DFT_BUFF_LEN = 4096;
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// 连接对象接收缓存大小
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public const int DFT_SEND_BUFF_LEN = 4096;
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// 连接对象发送缓存大小
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public const int DFT_RECV_BUFF_LEN = 4096;
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// 连接描述
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public string Desp { get;set;}
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// 初始化状态
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public bool IsInit { get;set; }
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// 连接状态
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public bool IsConn { get;set;}
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// 接收缓存长度
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public int BufferLen { get;set;}
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// 接收缓存大小
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public int SendBuffLen { get;set;}
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// 发送缓存大小
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public int RecvBuffLen { get;set;}
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// 接收缓存
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protected byte[] rcvBuf = null;
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// 连接状态
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public LinkBase()
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{
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Desp = this.GetType().Name;
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IsInit = false;
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IsConn = false;
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SendBuffLen = DFT_SEND_BUFF_LEN;
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RecvBuffLen = DFT_RECV_BUFF_LEN;
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BufferLen = DFT_BUFF_LEN;
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}
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/// <summary>
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/// 连接初始化
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/// </summary>
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/// <returns></returns>
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public virtual bool Init()
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{
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if ( IsInit )
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{
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return true;
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}
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try
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{
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rcvBuf = new byte[BufferLen];
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return true;
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}
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catch(Exception ex)
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{
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Trace.TraceError("Link:{0} Init fail, ex:{1}-{2}", this.Desp, ex.Message, ex.StackTrace);
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}
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return false;
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}
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/// <summary>
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/// 打开连接
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/// </summary>
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/// <returns></returns>
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public abstract bool Open();
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/// <summary>
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/// 关闭连接
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/// </summary>
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public abstract void Close();
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/// <summary>
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/// 销毁
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/// </summary>
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public abstract void Fnit();
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/// <summary>
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/// 接收数据
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/// </summary>
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/// <param name="rcvBuf"></param>
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/// <param name="offset"></param>
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/// <returns></returns>
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public abstract int Recv(byte[] rcvBuf, int offset);
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/// <summary>
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/// 发送数据
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/// </summary>
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/// <param name="sndBuf"></param>
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/// <returns></returns>
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public abstract bool Send(byte[] sndBuf, int offset, int len);
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}
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}
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