Simple use of CInternetSession

1. Simple use of CInternetSession

CInternetSession session;

CHttpFile *file = NULL;

CString strURL = "http://www.20abcd.com";

CString strhtml = ""; Storing Web page data

try{

File = (chttpfile*) session. OpenURL (strURL);

}catch (CInternetException * m_pexception) {

File = NULL;

m_pexception->m_dwerror;

M_pexception->delete ();

Session. Close ();

MessageBox ("CInternetException");

}

CString StrLine;

if (file!= NULL) {

while (File->readstring (strLine)!= NULL) {

strHTML + = StrLine;

}

}else{

MessageBox ("fail");

}

Session. Close ();

File->close ();

Delete file;

File = NULL;

2. CInternetSession's proxy and timeout usage

CInternetSession session;

CHttpFile *file = NULL;

Internet_proxy_info Proxyinfo;

Proxyinfo.dwaccesstype = Internet_open_type_proxy;

Proxyinfo.lpszproxy = "211.104.243.73:8080";

Proxyinfo.lpszproxybypass = NULL;

Session. SetOption (Internet_option_proxy, (LPVOID) &proxyinfo,

sizeof (Internet_proxy_info));

Session.      SetOption (Internet_option_connect_timeout, 5000); 5-Second Connection timeout

Session.           SetOption (internet_option_send_timeout, 1000); 1-Second Send timeout

Session.        SetOption (internet_option_receive_timeout, 7000); 7-Second Receive timeout

Session.     SetOption (internet_option_data_send_timeout, 1000); 1-Second Send timeout

Session.       SetOption (internet_option_data_receive_timeout, 7000); 7-Second Receive timeout

Session.          SetOption (internet_option_connect_retries, 1); 1 Times retry

try{

File = (chttpfile*) session. OpenURL ("http://www.163.com", 1,

internet_flag_transfer_ascii| internet_flag_reload| Internet_flag_dont_cache);

}catch (CInternetException * m_pexception) {

File = NULL;

m_pexception->m_dwerror;

M_pexception->delete ();

Session. Close ();

MessageBox ("CInternetException");

Return

}

CString StrLine;

if (file!= NULL) {

while (File->readstring (strLine)!= NULL) {

MessageBox (StrLine);

}

}else{

MessageBox ("fail");

}

File->close ();

Session. Close ();

3. Post use of CInternetSession

CInternetSession m_inetsession (_t ("session"),

0,

Internet_open_type_preconfig,

Null

Null

Internet_flag_dont_cache); Set no buffering

chttpconnection* pserver = NULL;

chttpfile* pFile = NULL;

CString strhtml = "";

CString strrequest = "name=123&pwd=321\r\n"; Post past Data

CString strheaders = "Accept: */*\r\nreferer:http://www.goodwaiter.com/\r\naccept-language:zh-cn\r\ncontent-type: Application/x-www-form-urlencoded\r\naccept-encoding:gzip, deflate\r\nuser-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon. NET CLR 1.1.4322;. NET CLR 2.0.50727) ";

try{

Internet_port Nport; Port

nport=80;

PServer = M_inetsession.gethttpconnection ("www.goodwaiter.com", nport);

PFile = Pserver->openrequest (Chttpconnection::http_verb_post, "/");

Pfile->addrequestheaders (strheaders);

Pfile->sendrequestex (Strrequest.getlength ());

Pfile->writestring (strrequest); There are "Name=aaa&name2=bbb&" in important-->m_request.

Pfile->endrequest ();

DWORD Dwret;

Pfile->queryinfostatuscode (Dwret);

if (Dwret = = HTTP_STATUS_OK) {

CString StrLine;

while ((Nread = pfile->readstring (strLine)) >0)

{

strHTML + = StrLine;

}

}

Delete PFile;

Delete PServer;

}

catch (cinternetexception* e) {

e->m_dwcontext;

}