94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
#pragma once
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enum HttpRequestType
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{
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HttpGet = 0,
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HttpPost,
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};
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//枚举下载状态
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enum DownloadState
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{
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HttpLoading = 0,
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HttpFialed,
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HttpFinished,
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};
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/******************************************************
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*定义错误信息
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*
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******************************************************/
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enum HttpInterfaceError
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{
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HttpErrorSuccess = 0, //成功
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HttpErrorInit, //初始化失败
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HttpErrorConnect, //连接HTTP服务器失败
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HttpErrorSend, //发送请求失败
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HttpErrorQuery, //查询HTTP请求头失败
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HttpError404, //页面不存在
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HttpErrorIllegalUrl, //无效的URL
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HttpErrorCreateFile, //创建文件失败
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HttpErrorDownload, //下载失败
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HttpErrorQueryIP, //获取域名对应的地址失败
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HttpErrorSocket, //套接字错误
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HttpErrorUserCancel, //用户取消下载
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HttpErrorBuffer, //文件太大，缓冲区不足
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HttpErrorHeader, //HTTP请求头错误
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HttpErrorParam, //参数错误，空指针，空字符……
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HttpErrorWriteFile, //写入文件失败
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HttpErrorUnknow, //未知错误
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};
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//下载的回调
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class IHttpCallback
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{
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public:
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virtual void OnDownloadCallback(void* pParam, DownloadState state, double nTotalSize, double nLoadSize) = 0;
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virtual bool IsNeedStop() = 0;
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};
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//定义每次读取数据的缓冲区大小 4KB
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#define READ_BUFFER_SIZE 4096
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//内存中设置的缓冲区大小 8M
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#define DOWNLOAD_BUFFER_SIZE (8*1024*1024)
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//回调参数信息
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struct HttpParamsData
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{
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void* lpparam;//自定义数据
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IHttpCallback* callback;//回调函数
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HttpInterfaceError errcode;//错误码
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};
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//定义常用http头名称
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#define HEADER_USER_AGENT "User-Agent"
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#define HEADER_CONNECTION "Connection"
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#define HEADER_ACCEPT "Accept"
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#define HEADER_ACCEPT_ENCODING "Accept-Encoding"
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#define HEADER_ACCEPT_LANGUAGE "Accept-Language"
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#define HEADER_CONTENT_TYPE "Content-Type"
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#define HEADER_HOST "Host"
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#define HEADER_RANGE "Range"
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#define HEADER_LOCATION "Location"
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#define HEADER_CONTENT_LENGTH "Content-Length"
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//默认HTTP版本
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static const char default_http_version[] = "HTTP/1.1";
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//定义默认的userAgent
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static const char default_user_agent[] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.4044.92 Safari/537.36";
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//默认接收类型
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static const char default_accept[] = "*/*";
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//默认保持连接
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static const char default_connection[] = "Keep-Alive";
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//默认语言
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static const char default_language[] = "zh-CN,zh;q=0.9";
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//HTTP协议换行符
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static const char http_newline[] = "\r\n";
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