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void Cmyregdlg::onbnclickedbutton1 ()//get cookie {//TODO: Add control Notification Handler code here//Build login form data char *action= "/d/u
    Pload/"; Char *headers= "accept:image/gif, Image/x-xbitmap, Image/jpeg, Image/pjpeg, Application/x-shockwave-flash, */*\r\n" "A ccept-language:zh-cn\r\n "//" Accept-encoding:gzip, deflate\r\n "" user-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
 
    SV1) \ r \ n "" host:192.168.0.21\r\n "" connection:keep-alive\r\n\r\n ";
CString szheaders (headers); szheaders=headers;//.
 
    Format (HEADERS,NREADLENGTH,SID); chttpfile* pFile = pconnection->openrequest (chttpconnection::http_verb_get,action,null,1,null,null,internet_ flag_no_cookies| internet_flag_keep_connection|
    Internet_flag_no_auto_redirect);
    Pfile->sendrequest (Szheaders,null,null);
    Szheaders.releasebuffer ();
    CString header ("");//Get landing results in header pfile->queryinfo (http_query_raw_headers_crlf,header,0);
    Pfile->close ();
    Delete PFile; int I=hEader.
    Find ("Set-cookie:");
        if (i>=0) {i+=12; Cookie1_value=header. Mid (I,header.
         Find (";", I)-i); int J=header.
        Find ("Set-cookie:", i);
            if (j>=0) {j+=12; Cookie2_value=header. Mid (J,header.
        Find (";", j)-j); }} header.
    ReleaseBuffer (); UpdateData (FALSE);//update} void Cmyregdlg::onbnclickedbutton2 ()//get formhash {//TODO: In this Add control notification handler code int Nrea
    dlength = 0; Build login form data char *action= "/d/upload/register.php?infloat=yes&handlekey=register&inajax=1&ajaxtarget=f
    Win_content_register "; Char *headers= "Accept: */*\r\n" "accept-language:zh-cn\r\n" "referer:http://127.0.0.1/d/upload/\r\n" "Accept -encoding:gzip, deflate\r\n "" user-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
 
    SV1) \ r \ n "" host:127.0.0.1\r\n "" connection:keep-alive\r\n "" Cookie:%s\r\n\r\n ";
    CString szheaders; Szheaders.format (Headers,cookIe1_value,cookie2_value); chttpfile* pFile = pconnection->openrequest (chttpconnection::http_verb_get,action,null,1,null,null,internet_ flag_no_cookies| internet_flag_keep_connection|
    Internet_flag_no_auto_redirect);
    Pfile->sendrequest (Szheaders,null,null);
 
    Szheaders.releasebuffer ();
    CString data ("");//Get Landing Results page Char szbuff[1025];
       while (1) {nreadlength = Pfile->read (Szbuff, 1024);
       if (nreadlength==0) break;
       szbuff[nreadlength]= ' + ';
    Data=data+szbuff;
    } pfile->close ();
 
    Delete PFile; int I=data.
    Find ("Formhash");
        if (i>=0) {i+=17; Formhash_value=data. Mid (I,data.
        Find ("\" ", I)-i);
    UpdateData (NULL); } data.
 
ReleaseBuffer (); } void Cmyregdlg::onbnclickedbutton3 ()//go to register {//TODO: Add control Notification Handler code here//Build login form data char *acti
    On= "/d/upload//register.php?regsubmit=yes&inajax=1"; Char *headers= "Accept:image/gif, Image/x-xbitmap,Image/jpeg, Image/pjpeg, Application/x-shockwave-flash, */*\r\n "" referer:http://127.0.0.1/d/upload/index.php\r\n " "Accept-language:zh-cn\r\n" "content-type:application/x-www-form-urlencoded\r\n"//"Accept-encoding:gzip, DE Flate\r\n "" user-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) \ r \ n "" host:127.0.0.1\r\n "" Content-length:%d\r\n "" connection:keep-alive\r\n "" cache-control:no-c Ache\r\n "" Cookie:%s;
 
    %s\r\n ";
    Char *form1= "formhash=%s"; Char *form2= "&referer=http%3A%2F%2F127.0.0.1%2Fd%2Fupload%2findex.php&handlekey=register& Activationauth=&username=test2&password=test&password2=test&email=test2@mail.com®submit=%cc%e1
    %BD%BB ";
    CString Formdata; Formdata.
    Format (Form1,formhash_value); Formdata.
    Append (Form2); int Nreadlength=formdata.
 
    GetLength ();
    CString szheaders;
 
    Szheaders.format (Headers,nreadlength,cookie1_value,cookie2_value);    chttpfile* PFile =Pconnection->openrequest (chttpconnection::http_verb_post,action,null,1,null,null,internet_flag_no_cookies| internet_flag_keep_connection|
    Internet_flag_no_auto_redirect); Pfile->sendrequest (Szheaders, (LPVOID) formdata.
     
    GetBuffer (), nreadlength);
    Szheaders.releasebuffer (); Formdata.
 
    ReleaseBuffer ();
    CString data ("");//Get Landing Results page Char szbuff[1025];
       while (1) {nreadlength = Pfile->read (Szbuff, 1024);
       if (nreadlength==0) break;
       szbuff[nreadlength]= ' + ';
    Data=data+szbuff;
    } pfile->close ();
    Delete PFile; int I=data.
Find ("cdata[");
        cdata[the user name has been registered] if (i>=0) {i+=6; AfxMessageBox (data. Mid (I,data.
    Find ("]", i)-i)); }//if (data. Find ("The user name is already registered") AfxMessageBox ("already exists.")
    "); M_data.
    Setwindowtexta (data); Data.
 
ReleaseBuffer ();
} CInternetSession * session;//Global const int ntimeout = 3000; Session. SetOption (Internet_option_connect_timeout, ntimeout); Wait delay between retries SESsion.   SetOption (Internet_option_connect_retries, 3); The retry count//////above is the session preparation pconnection=session.
GetHttpConnection (Server,port);//Request Pconnection->close ();
Delete pconnection; pconnection=null;//close connection at the end of the request, but do not close the session at this time, more requests can be made: pconnection=session.
GetHttpConnection (Server,port);//Request Pconnection->close ();
Delete pconnection;

pconnection=null;//closes the connection after the request is completed, but does not close the session when all requests are completed session->close (); You do not need to analyze the cookie data as above, because the session is automatically saved and forwarded.