internal override IAsyncResult BeginExecuteUrl(
String url, String method, String childHeaders,
bool sendHeaders,
bool addUserIndo, IntPtr token, String name, String authType,
byte[] entity,
AsyncCallback cb, Object state) {
if (_ecb == IntPtr.Zero || // after done with session
_asyncResultOfExecuteUrl != null || // another ExecuteUrl in progress
(sendHeaders && HeadersSent())) // asked to send headers, but already sent them
{
throw new InvalidOperationException(SR.GetString(SR.Cannot_execute_url_in_this_context));
}
if (entity != null && entity.Length > 0) {
int ret = UnsafeNativeMethods.EcbGetExecUrlEntityInfo(entity.Length, entity, out _entity);
if (ret != 1) {
throw new HttpException(SR.GetString(SR.Failed_to_execute_url));
}
}
Debug.Trace("ExecuteUrl", "ISAPIWorkerRequestInProcForIIS6.BeginExecuteUrl: url=\"" + url + "\".");
HttpAsyncResult ar = new HttpAsyncResult(cb, state);
_asyncResultOfExecuteUrl = ar;
_executeUrlCompletionCallback = new ISAPIAsyncCompletionCallback(OnExecuteUrlCompletion);
_rootedThis = GCHandle.Alloc(this); // root for the duration of ExecuteUrl
int rc;
try {
ar.MarkCallToBeginMethodStarted();
rc = UnsafeNativeMethods.EcbExecuteUrlUnicode(_ecb,
url, method, childHeaders,
sendHeaders,
addUserIndo, token, name, authType,
_entity,
_executeUrlCompletionCallback);
}
finally {
ar.MarkCallToBeginMethodCompleted();
}
if (rc != 1) {
if (_entity != IntPtr.Zero) {
UnsafeNativeMethods.EcbFreeExecUrlEntityInfo(_entity);
}
_rootedThis.Free();
_asyncResultOfExecuteUrl = null;
Debug.Trace("ExecuteUrl", "ISAPIWorkerRequestInProcForIIS6.BeginExecuteUrl: failed!");
throw new HttpException(SR.GetString(SR.Failed_to_execute_url));
}
if (sendHeaders) {
// ExecuteUrl will send headers, worker request should not
_headersSentFromExecuteUrl = true;
}
return ar;
}
