/// <summary>
/// Completes the execution of an asynchronous query operation.
/// </summary>
/// <param name="ar">The async result returned by <see cref="BeginQuery" />.</param>
/// <returns>The query response message.</returns>
/// <remarks>
/// <note>
/// Each call to <see cref="BeginQuery" /> must be matched with
/// a call to EndQuery.
/// </note>
/// </remarks>
public Msg EndQuery(IAsyncResult ar)
{
var arQuery = (AsyncResult)ar;
arQuery.Wait();
try
{
if (arQuery.Exception != null)
{
throw arQuery.Exception;
}
#if TRACE
if (error != null)
{
query._Trace(base.Router, 2, "Q/R Finish", null, "Exception: {0}", error.ToString());
}
else
{
var sb = new StringBuilder(512);
sb.Append("\r\nResponse:\r\n\r\n");
response._TraceDetails(base.Router, sb);
query._Trace(base.Router, 2, "Q/R Finish", "", sb.ToString());
}
#endif
Assertion.Test(error != null || response != null, "Either an error or a response should be present.");
if (error != null)
{
Helper.Rethrow(error);
throw null;
}
else
{
return(response);
}
}
finally
{
arQuery.Dispose();
}
}
