C++模拟爱奇艺web视频上传

c++模拟爱奇艺web视频上传

说明

此次学习的是HTTP的post协议，使用使用multipart form-data上传文件。

理解HTTP消息头（五）——使用multipart/form-data上传文件

写的比较好的一篇帖子 https://www.cnblogs.com/liqiu/archive/2013/05/24/3096378.html

HTTP1.1封装

简单封装了HTTP1.1的get和post，实现http的长连接模式，实现发送和数据接收。简单实现了socket的复用。

Get封装

c++ bool HttpConnect::getData1_1(std::string host, std::string path, std::string get_content) { //GET请求方式 std::stringstream stream; stream << "GET " << path << "?" << get_content; stream << " HTTP/1.1\r\n"; stream << "Accept: */*\r\n"; stream << "Host: " << host << "\r\n"; stream << "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3\r\n"; stream << "Connection: Keep-Alive\r\n\r\n"; return socketHttp(host, stream.str()); }

post封装

c++ void HttpConnect::postData(std::string host, std::string path, std::string post_content) { //POST请求方式 std::stringstream stream; stream << "POST " << path; stream << " HTTP/1.1\r\n"; stream << "Host: " << host << "\r\n"; stream << "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3\r\n"; stream << "Content-Type: application/x-www-form-urlencoded\r\n"; stream << "Content-Length: " << post_content.length() << "\r\n\r\n"; stream << post_content.c_str(); socketHttp(host, stream.str()); }

C++ 模拟POST，multipart/form-data格式上传

```c++ long nFileSize = 0; char * pFileBuf = ReadFileBuf(g_strfile.c_str(),&nFileSize); g_filesize = nFileSize;

int nCount = g_filesize/65536;
int nLeave = g_filesize%65536;

for(int i =0;i< nCount+1;i++)
{
    __int64 dwTime = GetSysTimeMicros()/1000;

    std::string strBoundary = GetRamdomBoundary();

    std::string strConBoundary = "--" + strBoundary;

    std::stringstream  contentStram;
    contentStram << strConBoundary  << "\r\n";
    contentStram << "Content-Disposition: form-data; name=\"file_id\"\r\n\r\n";
    contentStram << g_file_id << "\r\n";

    contentStram << strConBoundary << "\r\n";
    contentStram << "Content-Disposition: form-data; name=\"file_size\"\r\n\r\n";
    contentStram << g_filesize << "\r\n";

    contentStram << strConBoundary << "\r\n";
    contentStram << "Content-Disposition: form-data; name=\"range\"\r\n\r\n";

    int nStart = 0;
    nStart = i* 65536;
    int nLast = 0;
    int nSendSize = 0;
    if (i != nCount)
    {
        nLast = nStart + 65535;
        nSendSize = 65536;
    }
    else
    {
        if (nLeave == 0)
            break;
        nLast = nStart + nLeave - 1;
        nSendSize = nLeave;
    }

    //contentStram << "0-65535" << "\r\n";
    contentStram << nStart << "-" << nLast << "\r\n";

    contentStram << strConBoundary << "\r\n";
    contentStram << "Content-Disposition: form-data; name=\"file\"; filename=\"blob\"\r\n";
    //contentStram << "Content-Type: application/octet-stream\r\n\r\n";
    contentStram << "Content-Type: video/mp4\r\n\r\n";

    std::string strContentData = contentStram.str();
    strContentData.append(pFileBuf+nStart,nSendSize);
    strContentData.append("\r\n");
    strContentData.append(strConBoundary);
    strContentData.append("--\r\n\r\n");
    int nContentLen = strContentData.size();


    //////////////////////////////////////////////////////////////
    std::stringstream streamPost;
    streamPost << "POST /upload?t=" << dwTime << " HTTP/1.1\r\n";
    streamPost << "Accept: */*\r\n";
    streamPost << "Content-Type: multipart/form-data; boundary="<<strBoundary<<"\r\n";
    streamPost << "User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)\r\n";
    streamPost << "Host: "<< host << "\r\n";
    streamPost << "DNT: 1\r\n";
    streamPost << "Connection: keep-alive\r\n";
    streamPost << "Cache-Control: no-cache\r\n";
    streamPost << g_cookie << "\r\n";
    streamPost << "Content-Length: " << nContentLen << "\r\n\r\n";

    std::string PostContent = streamPost.str();
    int nHeadSize = PostContent.size();
    PostContent.append(strContentData.c_str(),nContentLen);
    int nPostSize = PostContent.size();
    if (http.socketHttp(host,PostContent) == false)
    {
        AfxMessageBox(_T("发包失败！"));
        break;
    }
    else
    {
        std::string strGetResult = http.GetLastRequestResult();

        std::wstring wStr;
        Transcode::UTF8_to_Unicode(strGetResult.c_str(), strGetResult.size(), wStr);
        const wchar_t* pData = wStr.c_str();
        OutputDebugString(pData);
    }
}

```