public Boolean RefreshIEProxySettings()
{
System.Windows.Forms.WebBrowser oBrowser = new System.Windows.Forms.WebBrowser();
oBrowser.ScriptErrorsSuppressed = true;
CountedWait oCWTimer = new CountedWait(ref oBrowser, 4000);
while (true)
{
try
{
const int INTERNET_OPTION_PROXY_SETTINGS_CHANGED = 95;
const int INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY = 3;
Struct_INTERNET_PROXY_INFO struct_IPI;
if (iProxyPos >= BlackSEOps.Properties.Settings.Default.Proxies.Count)
iProxyPos = 0;
String sProxy = BlackSEOps.Properties.Settings.Default.Proxies[iProxyPos];
iProxyPos++;
// Filling in structure
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy = Marshal.StringToHGlobalAnsi(sProxy);
struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
// Allocating memory
IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
// Converting structure to IntPtr
Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));
Marshal.FreeHGlobal(struct_IPI.proxy);
Marshal.FreeHGlobal(struct_IPI.proxyBypass);
Marshal.FreeCoTaskMem(intptrStruct);
InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY_SETTINGS_CHANGED, IntPtr.Zero, 0);
oBrowser.Navigate("http://kreuzerkrieg.dyndns.info/SiteMap.xml");
if (oCWTimer.Wait(15))
{
return true;
}
else
{
//System.Console.WriteLine("Proxy \"" + sProxy + "\" appears to be dead trying next one.");
}
}
catch (UnauthorizedAccessException uex)
{
throw new UnauthorizedAccessException("RefreshIEProxySettings thrown an exception", uex);
}
catch (AccessViolationException ex)
{
throw new AccessViolationException("RefreshIEProxySettings has thrown an exception", ex);
}
catch (Exception ex)
{
throw new Exception("RefreshIEProxySettings thrown an exception", ex);
}
}
}
public HtmlDocument loadDocument(ref System.Windows.Forms.WebBrowser oBrowser, String sURL)
{
CountedWait oCWTimer = new CountedWait(ref oBrowser, 3000);
while (true)
{
try
{
oBrowser.Navigate(sURL);
if (oCWTimer.Wait(10))
{
return oBrowser.Document;
}
else
{
//System.Console.WriteLine("Proxy timeout, switching to next one.");
oWININET.RefreshIEProxySettings();
}
}
catch (UnauthorizedAccessException uex)
{
throw new UnauthorizedAccessException("..::" + this.GetType().Name + "::..loadDocument has thrown an exception.", uex);
}
catch (AccessViolationException ex)
{
throw new AccessViolationException("..::" + this.GetType().Name + "::..loadDocument has thrown an exception.", ex);
}
catch (Exception ex)
{
System.Console.WriteLine("..::" + this.GetType().Name + "::..loadDocument thrown an exception, reason: " + ex.Message + "\n" + ex.StackTrace + ", switching proxy");
oWININET.RefreshIEProxySettings();
}
}
}
protected void NavigateToSite(HtmlElement oLink, ref WebBrowser oBrowser)
{
CountedWait oCWTimer = new CountedWait(ref oBrowser, 3000);
while (true)
{
try
{
sSiteToNavigate = oLink.GetAttribute("href");
oLink.InvokeMember("click");
if (oCWTimer.Wait(10))
{
bSiteFound = true;
TimedWait oTimedWait = new TimedWait(oRandomizer.Next(10000, 30000));
oTimedWait.Wait();
return;
}
else
{
//System.Console.WriteLine("Proxy timeout, switching to next one.");
wininet.RefreshIEProxySettings();
}
}
catch (UnauthorizedAccessException ex)
{
throw new UnauthorizedAccessException("..::" + this.GetType().Name + "::..NavigateToSite thrown an exception", ex);
}
catch (AccessViolationException ex)
{
throw new AccessViolationException("..::" + this.GetType().Name + "::..NavigateToSite thrown an exception", ex);
}
catch (Exception ex)
{
System.Console.WriteLine("..::" + this.GetType().Name + "::..NavigateToSite thrown an exception, reason: " + ex.Message + ", switching proxy");
wininet.RefreshIEProxySettings();
}
}
}
protected void __Go2FormNSubmitQuery(ref System.Windows.Forms.WebBrowser oBrowser, String sQuery, String sUrl, String sInputId, String sBtnId)
{
CountedWait oCWTimer = new CountedWait(ref oBrowser, 3000);
Int32 iErrorCount = 0;
while (true)
{
try
{
HtmlDocument oDocument = oDocLoader.loadDocument(ref oBrowser, sUrl);
HtmlElement oQueryInput = oDocument.GetElementById(sInputId);
HtmlElement oQuerySubmit = oDocument.GetElementById(sBtnId);
if (oQueryInput == null || oQuerySubmit == null)
{
throw new Exception("Submition form elements not found, retrying");
}
oQueryInput.InvokeMember("click");
oQueryInput.InvokeMember("focus");
oQueryInput.SetAttribute("value", sQuery);
oQuerySubmit.InvokeMember("click");
if (oCWTimer.Wait(10))
{
TimedWait oTimedWait = new TimedWait(oRandomizer.Next(10000, 30000));
oTimedWait.Wait();
return;
}
else
{
//System.Console.WriteLine("Proxy timeout, switching to next one.");
wininet.RefreshIEProxySettings();
}
iErrorCount = 0;
}
catch (UnauthorizedAccessException ex)
{
throw new UnauthorizedAccessException("Unauthorized access to HTML properties, aborting operation", ex);
}
catch (AccessViolationException ex)
{
throw new AccessViolationException("Access Violation, aborting operation", ex);
}
catch (Exception ex)
{
System.Console.WriteLine("..::" + this.GetType().Name + "::..__Go2FormNSubmitQuery thrown an exception, reason: " + ex.Message + ", switching proxy");
wininet.RefreshIEProxySettings();
}
finally
{
iErrorCount++;
if (iErrorCount > 10)
{
throw new Exception("Too much errors in __Go2FormNSubmitQuery, aborting...");
}
}
}
}
protected void GoToNextPage(HtmlElement oLink, ref WebBrowser oBrowser)
{
CountedWait oCWTimer = new CountedWait(ref oBrowser, 3000);
while (true)
{
try
{
// Below line added to rise UnauthorizedAccessException in case something went wrong
String sHREF = oLink.GetAttribute("href");
oLink.InvokeMember("click");
if (oCWTimer.Wait(10))
{
TimedWait oTimedWait = new TimedWait(oRandomizer.Next(8000, 14000));
oTimedWait.Wait();
return;
}
else
{
//System.Console.WriteLine("Proxy timeout, switching to next one.");
wininet.RefreshIEProxySettings();
}
}
catch (UnauthorizedAccessException ex)
{
throw new UnauthorizedAccessException("Unauthorized access to HTML properties, aborting operation", ex);
}
catch (AccessViolationException ex)
{
throw new AccessViolationException("Access Violation, aborting operation", ex);
}
catch (Exception ex)
{
System.Console.WriteLine("..::" + this.GetType().Name + "::..GoToNextPage thrown an exception, reason: " + ex.Message + ", switching proxy");
wininet.RefreshIEProxySettings();
}
}
}
