virtual BOOL OnParseError( CHttpServerContext* pCtxt, int nCause );
Return Value
Nonzero error is successfully parsed; otherwise 0.
Parameters
pCtxt
A pointer to a CHttpServerContext object that contains an EXTENSION_CONTROL_BLOCK structure function dwHttpStatusCode. These status values are:
nCause
The cause of the error. Can be one of the following values:
| Enum type | Description |
| callOK | OnParseError handled the error. |
| callParamRequired | A required parameter was missing. |
| callBadParamCount | There were too many or too few parameters. |
| callBadCommand | The command name was not found. |
| callNoStackSpace | No stack space was available. |
| callNoStream | No CHtmlStream was available. |
| callMissingQuote | A parameter is missing a quote mark. |
| callMissingParams | No parameters were available. |
| callBadParam | A parameter had a bad format. |
Remarks
Called by the framework to parse errors. Once the error is identified, the message associated with the cause of the error is returned to the client either in an HTML stream or in a CHttpServerContext::WriteClient message.
Override this member function to customize the error parsing.
Example
The following code demonstrates how to handle various parsing errors in the ISAPI and notify users about them.
BOOL CMfcCookieExtension::OnParseError(CHttpServerContext* pCtxt, int nCause)
{
// TODO: Add your specialized code here and/or call the base class
ISAPITRACE1 ("Parser: %d\n", nCause);
switch (nCause)
{
case callOK:
ISAPITRACE ("No errors\n");
break;
case callParamRequired:
*pCtxt << "A required parameter was missing<br>";
break;
case callBadParamCount:
*pCtxt <<"There were too many or too few parameters<br>";
break;
case callBadCommand:
*pCtxt <<"The command name was not found<br>";
break;
case callNoStackSpace:
*pCtxt <<"No stack space was available<br>";
break;
case callNoStream:
*pCtxt <<"No CHtmlStream was available<br>";
break;
case callMissingQuote:
*pCtxt <<"A parameter had a bad format <br>";
break;
case callMissingParams:
*pCtxt <<"No parameters were available <br>";
break;
case callBadParam:
*pCtxt <<"A parameter had a bad format (ie, only one quote) <br>";
break;
}
// Return TRUE, because error was handled.
return TRUE;
}