92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
#ifndef __ITransport_H__
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#define __ITransport_H__
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#include "Kernel\Sys.h"
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class ITransport;
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// 传输口数据到达委托。传入数据缓冲区地址和长度，如有反馈，仍使用该缓冲区，返回数据长度
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typedef uint (*TransportHandler)(ITransport* port, Buffer& bs, void* param, void* param2);
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// 帧数据传输接口
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// 实现者确保数据以包的形式传输，屏蔽数据的粘包和拆包
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class ITransport
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{
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private:
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TransportHandler _handler;
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void* _param;
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public:
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bool Opening; // 是否正在打开
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bool Opened; // 是否打开
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ushort MinSize; // 数据包最小大小
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ushort MaxSize; // 数据包最大大小
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// 初始化
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ITransport();
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// 析构函数确保关闭
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virtual ~ITransport();
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// 打开传输口
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bool Open();
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// 关闭传输口
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void Close();
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// 发送数据
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bool Write(const Buffer& bs);
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bool Write(const Buffer& bs, const void* opt);
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// 接收数据
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uint Read(Buffer& bs);
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//Buffer Read();
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// 注册回调函数
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virtual void Register(TransportHandler handler, void* param = nullptr);
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#if DEBUG
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//virtual const String ToString() const { return String("ITransport"); }
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#else
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//virtual const String ToString() const { return String(""); }
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#endif
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protected:
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virtual bool OnOpen() { return true; }
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virtual void OnClose() { }
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virtual bool OnWrite(const Buffer& bs) = 0;
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virtual bool OnWriteEx(const Buffer& bs, const void* opt);
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virtual uint OnRead(Buffer& bs) = 0;
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// 是否有回调函数
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bool HasHandler() { return _handler != nullptr; }
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// 引发数据到达事件
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virtual uint OnReceive(Buffer& bs, void* param);
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};
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// 数据口包装
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class PackPort : public Object, public ITransport
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{
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private:
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public:
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ITransport* Port; // 传输口
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PackPort();
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virtual ~PackPort();
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virtual void Set(ITransport* port);
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//virtual const String ToString() const { return String("PackPort"); }
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protected:
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virtual bool OnOpen();
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virtual void OnClose();
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virtual bool OnWrite(const Buffer& bs);
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virtual uint OnRead(Buffer& bs);
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static uint OnPortReceive(ITransport* sender, Buffer& bs, void* param, void* param2);
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};
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#endif
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