使用socks4 socks5 http代理的客户端

大家好，又见面了，我是你们的朋友全栈君。

///定义的结构
struct sock4req1
{

    char VN;
    char CD;
    unsigned short Port;
    unsigned long IPAddr;
    char other[1];
};

struct sock4ans1
{

    char VN;
    char CD;
};

struct sock5req1
{

    char Ver;
    char nMethods;
    char Methods[255];
};

struct sock5ans1
{

    char Ver;
    char Method;
};

struct sock5req2
{

    char Ver;
    char Cmd;
    char Rsv;
    char Atyp;
    unsigned long IPAddr;
    unsigned short Port;
   
//    char other[1];
};

struct sock5ans2
{

    char Ver;
    char Rep;
    char Rsv;
    char Atyp;
    char other[1];
};

struct authreq
{

    char Ver;
    char Ulen;
    char Name[255];
    char PLen;
    char Pass[255];
};

struct authans
{

    char Ver;
    char Status;
};

///
///代码片段
void CTestDlg::OnSocks4()
{

    CString m_sError;
    ClientSock.Create();

    //Socks4代理服务器端口及地址
    //if( !ClientSock.Connect( “195.65.215.38”,1080) )
    if( !ClientSock.Connect( “192.168.123.194”,1080) )
    {

        m_sError = _T(“不能连接到代理服务器!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }

    char buff[100];
    memset(buff,0,100);
    struct sock4req1 *m_proxyreq;
    m_proxyreq = (struct sock4req1 *)buff;
    m_proxyreq->VN = 4;
    m_proxyreq->CD = 1;
    m_proxyreq->Port = ntohs(21);
    m_proxyreq->IPAddr = inet_addr(“219.201.39.50”);
    strcpy(m_proxyreq->other , “”);
    ClientSock.Send(buff,9);
    struct sock4ans1 *m_proxyans;
    m_proxyans = (struct sock4ans1 *)buff;
    memset(buff,0,100);
    ClientSock.Receive(buff,100);
    if(m_proxyans->VN != 0 || m_proxyans->CD != 90)
    {

        m_sError = _T(“通过代理连接主站不成功!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }

//连接已经建立,发送及接收数据
    memset(buff,0,100);
    strcpy(buff,”Hello!”);
    ClientSock.Send(buff,sizeof(buff));
    memset(buff,0,100);
    ClientSock.Receive(buff,100);
    MessageBox(buff);
    ClientSock.Close();
       
}

void CTestDlg::OnSocks5()
{

    // TODO: Add your control notification handler code here
    //http://my.nbip.net/homepage/nblulei/ttdl/sockdllb.htm
   
    CString m_sError;
    ClientSock.Create();
    //Socks5代理服务器端口及地址
    //if( !ClientSock.Connect(“61.238.12.84”,12654) )
    if( !ClientSock.Connect(“192.168.123.194”,1080) )
    {

        m_sError = _T(“不能连接到代理服务器!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }
    char buff[600];
    struct sock5req1 *m_proxyreq1;
    m_proxyreq1 = (struct sock5req1 *)buff;
    m_proxyreq1->Ver = 5;
    m_proxyreq1->nMethods = 2;
    m_proxyreq1->Methods[0] = 0;
    m_proxyreq1->Methods[1] = 2;
    ClientSock.Send(buff,4);
    struct sock5ans1 *m_proxyans1;
    m_proxyans1 = (struct sock5ans1 *)buff;
    memset(buff,0,600);
    ClientSock.Receive(buff,600);
    if(m_proxyans1->Ver != 5 || (m_proxyans1->Method!=0 && m_proxyans1->Method!=2))
    {

        m_sError = _T(“通过代理连接主站不成功!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }
    if(m_proxyans1->Method == 2)
    {

        int nUserLen = strlen(“alon”);
        int nPassLen = strlen(“alon”);
        struct authreq *m_authreq = {0};
        m_authreq = (struct authreq *)buff;
        m_authreq->Ver = 1;
        m_authreq->Ulen = nUserLen;
        strcpy(m_authreq->Name,”alon”);
        m_authreq->PLen = nPassLen;
        strcpy(m_authreq->Pass,”alon”);
        ClientSock.Send(buff,513);
        struct authans *m_authans;
        m_authans = (struct authans *)buff;
        memset(buff,0,600);
        ClientSock.Receive(buff,600);
        if(m_authans->Ver != 1 || m_authans->Status != 0)
        {

            m_sError = _T(“代理服务器用户验证不成功!”);
            ClientSock.Close();
            MessageBox(m_sError);
            return ;
        }
    }
    struct sock5req2 *m_proxyreq2;
    m_proxyreq2 = (struct sock5req2 *)buff;
    m_proxyreq2->Ver = 5;
    m_proxyreq2->Cmd = 1;
    m_proxyreq2->Rsv = 0;
    m_proxyreq2->Atyp = 1;
    m_proxyreq2->IPAddr = inet_addr(“219.201.39.50”);
    m_proxyreq2->Port = ntohs(21);
   

    ClientSock.Send(buff,sizeof(struct sock5req2));
    struct sock5ans2 *m_proxyans2;
    memset(buff,0,600);
    m_proxyans2 = (struct sock5ans2 *)buff;
    ClientSock.Receive(buff,600);
    if(m_proxyans2->Ver != 5 || m_proxyans2->Rep != 0)
    {

        m_sError = _T(“通过代理连接主站不成功!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }

//连接已经建立,发送及接收数据
    memset(buff,0,600);
    strcpy(buff,”Hello!”);
    ClientSock.Send(buff,sizeof(buff));
    memset(buff,0,600);
    ClientSock.Receive(buff,600);
    MessageBox(buff);
    ClientSock.Close();
}

void CTestDlg::OnHttp()
{

    // TODO: Add your control notification handler code here
    CString m_sError;
    ClientSock.Create();
    //if( !ClientSock.Connect(“61.145.123.202”,3128) )
    if( !ClientSock.Connect(“211.92.143.19”,3128) )
    //if( !ClientSock.Connect(“WWW.TOM.COM”,80) )
    {

        m_sError = _T(“不能连接到代理服务器!”);
        ClientSock.Close();
        MessageBox(m_sError);
        return ;
    }

    char buff[600] = {0};
//    sprintf( buff, “%s%s:%d%s”,”CONNECT “,”219.201.39.50″,21,” HTTP/1.1/r/nUser-Agent: MyApp/0.1/r/n/r/n”);
    sprintf( buff, “%s%s:%d%s”,”CONNECT “,”219.201.39.50″,21,” HTTP/1.1/r/nUser-Agent: CERN-LineMode/2.15 libwww/2.17b3/r/n/r/n”);
//    sprintf( buff, “%s%s:%d%s”,”CONNECT “,”www.tom.com”,80,” HTTP/1.1/r/nUser-Agent: CERN-LineMode/2.15 libwww/2.17b3/r/n/r/n”);
//    sprintf( buff, “%s%s”,”GET “,”HTTP://WWW.TOM.COM HTTP/1.1/r/n/r/n”);
   
    ClientSock.Send(buff,strlen(buff)); //发送请求
    memset(buff,0,600);
    ClientSock.Receive(buff,600);
    if(strstr(buff, “HTTP/1.0 200 Connection established”) == NULL) //连接不成功
    {

        m_sError = _T(“通过代理连接主站不成功!”);
        ClientSock.Close();
        return ;
    }

    /*    if( strstr(buff, “Error 403”) )
    {

        //return GoError(PROXYERROR_PROXYDISABLE);  //代理服务器拒绝请求
    }
   
    if( strstr(buff, “407 Proxy authentication required”) )  //需要身份验证
    {

        //return GoError(PROXYERROR_USERNAMEORPASSWORD);  //用户身份校检不成功
    }
    if( strstr(buff, “Connection refuesed”) )
    {

        //return GoError(PROXYERROR_CONNECTHOSTSERVER);  //通过代理连接主站不成功
    }
    if( strstr(buff, “Access Denied”) )
    {

        //return GoError(PROXYERROR_USERNAMEORPASSWORD);  //用户身份校检不成功
    }
    if(strstr(buff, “Connection refused by Remote Host”) )
    {

        //return GoError(PROXYERROR_CONNECTHOSTSERVER);  //通过代理连接主站不成功
    }
   
    ClientSock.Close();   
*/

//连接已经建立,发送及接收数据
    memset(buff,0,600);
    strcpy(buff,”Hello!”);
    ClientSock.Send(buff,sizeof(buff));
    memset(buff,0,600);
    ClientSock.Receive(buff,600);
    MessageBox(buff);
    ClientSock.Close();
   
   
}

/
///另附一些http的请求和返回
发送一：
CONNECT 61.135.158.91:80 HTTP/1.1
User-Agent: MyApp/0.1

发送二：
CONNECT 61.135.158.91:80 HTTP/1.1
User-Agent: CERN-LineMode/2.15 libwww/2.17b3

发送三：
CONNECT 127.0.0.1:2222 HTTP/1.0
User-agent: MyApp/1.0
Proxy-authorization: enter xxxxxx  

接收一：
HTTP/1.0 403 Forbidden
Server: Topproxy-2.0/
Mime-Version: 1.0
Date: Thu, 18 Nov 2004 16:37:53 GMT
Content-Type: text/html
Content-Length: 718
Expires: Thu, 18 Nov 2004 16:37:53 GMT
X-Squid-Error: ERR_ACCESS_DENIED 0
X-Cache: MISS fro

接收二：
HTTP/1.0 502 Proxy Error ( SSL port specified is not allowed.  )
Via: 1.0 PROXY
Pragma: no-cache
Cache-Control: no-cache
Content-Type: text/html

<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML//EN”>
<html>

<head>
<meta http-equiv=”Conten”

接收三：
HTTP/1.1 403 Forbidden
Date: Sat, 20 Nov 2004 14:33:13 GMT
Content-Length: 257
Content-Type: text/html
Server: NetCache appliance (NetApp/5.6R1D6)

<HTML>
<HEAD><TITLE>403 Forbidden</TITLE></HEAD>
<BODY>
<H1>Forbidden</H1>
<H4>