Hello,

My "monitoring" application checks the status of other web services to make sure they are up and able to respond by sending HTTP requests to them every so often.

The problem is - if one of the web services falls into a "locked" state and doesn't respond - so does the monitoring application! I've isolated it down the SendRequest() call - it just gets stuck and hangs for what appears to be forever (didn't release overnight). I've set just about every timeout I can find, but nothing seems to be working. Help!

//Create Internet Session object//
CInternetSession* m_pSession = new CInternetSession();

if (m_pSession == NULL)
{
CString sError = "Unable to create new CInternetSession object";
MonitorLog(sError);
return FALSE;
}

//Set Every time out I can find//

m_pSession->SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 5000);
m_pSession->SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT, 5000);
m_pSession->SetOption(INTERNET_OPTION_SEND_TIMEOUT, 5000);
m_pSession->SetOption(INTERNET_OPTION_CONNECT_BACKOFF, 5000);
m_pSession->SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT, 5000);
m_pSession->SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 5000);
m_pSession->SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);

CHttpConnection* m_pServer = NULL;
CHttpFile* m_pFile = NULL;

//Make the HTTP Connection (works)//

MonitorLog("Making HTTP Connection");
m_pServer = m_pSession->GetHttpConnection(strServerName, nPort);
if (! m_pServer)
{
CString sError = "Failed to Connect to Server : " + strServerName;
MonitorLog(sError);
goto FAIL;
}

//Open request (works)//

MonitorLog("Opening Request");
m_pFile = m_pServer->OpenRequest(CHttpConnection::HTTP_VERB_GET, strObject,NULL, 1, NULL, NULL, INTERNET_FLAG_EXISTING_CONNECT | INTERNET_FLAG_NO_AUTO_REDIRECT | INTERNET_FLAG_RELOAD | INTERNET_FLAG_NO_CACHE_WRITE | INTERNET_FLAG_SECURE | INTERNET_FLAG_IGNORE_CERT_DATE_INVALID | INTERNET_FLAG_IGNORE_CERT_CN_INVALID);
if (! m_pFile)
{
CString sError = "Failed to Open Request : " + strObject;
MonitorLog(sError);
goto FAIL;
}

//Sending Request (HANGS IF SERVICE IS LOCKED!!!!!)//

MonitorLog("Sending Request");
if (!(m_pFile->SendRequest()))
{
CString sError = "Failed to Send Request to Server";
MonitorLog(sError);
goto FAIL;
}