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/*****************************************************************
*HTTP处理类，主要用于HTTP GET/POST、下载（支持重定向）功能
*Author： JelinYao
*Date： 2015/2/14 12:11
*Email： mailto://[email protected]
*/
/*****************************************************************
*/
#pragma once
#include <stdio.h>
#include <tchar.h>
#include <string>
using std::string;
using std::wstring;
enum HttpRequest
{
Hr_Post,
Hr_Get,
};
//枚举下载状态
enum DownloadState
{
DS_Loading = 0,
DS_Fialed,
DS_Finished,
};
/******************************************************
*定义错误信息
*
******************************************************/
enum HttpInterfaceError
{
Hir_Success = 0, //成功
Hir_InitErr, //初始化失败
Hir_ConnectErr, //连接HTTP服务器失败
Hir_SendErr, //发送请求失败
Hir_QueryErr, //查询HTTP请求头失败
Hir_404, //页面不存在
Hir_IllegalUrl, //无效的URL
Hir_CreateFileErr, //创建文件失败
Hir_DownloadErr, //下载失败
Hir_QueryIPErr, //获取域名对应的地址失败
Hir_SocketErr, //套接字错误
Hir_UserCancel, //用户取消下载
Hir_BufferErr, //文件太大，缓冲区不足
Hir_HeaderErr, //HTTP请求头错误
Hir_UnknowErr,
};
//下载的回调
class IHttpCallback
{
public:
virtual void OnDownloadCallback(void* pParam, DownloadState state, double nTotalSize, double nLoadSize) = 0;
virtual bool IsNeedStop() = 0;
};
class IHttpBase
{
public:
virtual void SetDownloadCallback(IHttpCallback* pCallback, void* pParam) = 0;
virtual bool DownloadFile(LPCWSTR lpUrl, LPCWSTR lpFilePath) = 0;
virtual bool DownloadToMem(LPCWSTR lpUrl, OUT void** ppBuffer, OUT int* nSize) = 0;
virtual void FreeInstance() = 0;
virtual HttpInterfaceError GetErrorCode() = 0;
};
////////////////////////////////////////////////////////////////////////////////////
//HTTP请求接口类
class IWininetHttp
:public IHttpBase
{
public:
//HTTP请求功能
virtual string Request(LPCSTR lpUrl, HttpRequest type, LPCSTR lpPostData = NULL, LPCSTR lpHeader = NULL) = 0;
virtual string Request(LPCWSTR lpUrl, HttpRequest type, LPCSTR lpPostData = NULL, LPCWSTR lpHeader = NULL) = 0;
virtual bool DownloadFile(LPCSTR pUrl, LPCSTR pSavePath) = 0;
};
///////////////////////////////////////////////////////////////////////////////////////
//HTTP socket类
class ISocketHttp
:public IHttpBase
{
public:
virtual LPCWSTR GetIpAddr()const = 0;
};
///////////////////////////////////////////////////////////////////////////////////////
//WinHttp类
class IWinHttp
: public IHttpBase
{
public:
virtual void SetTimeOut(int dwConnectTime, int dwSendTime, int dwRecvTime) = 0;
};
/////////////////////////////////////////////////////////////////////////////////
//DLL的导出函数声明
//#define LIB_DLL
#ifdef EXPORT_LIB//导出库
#ifdef LIB_DLL
#define LIB_FUN extern "C" __declspec(dllexport)
#else
#define LIB_FUN
#endif
#else//引用库
#ifdef LID_DLL
#define LIB_FUN extern "C" __declspec(dllimport)
#else
#define LIB_FUN
#endif
#endif
/***********************************************************
*声明导出函数部分
*
************************************************************
*/
enum HttpFlag
{
Hf_Socket = 0,
Hf_WinInet,
Hf_WinHttp,
};
LIB_FUN bool CreateInstance(IHttpBase** pBase, HttpFlag flag);