private async Task WriteAsync(Socket socket, PipeReader reader, Func <LdapRequestMessage, LdapRequestMessage> packetCallback, Action <LdapException> errorCallback, CancellationToken cancellationToken)
{
try
{
while (socket.Connected)
{
var result = await reader.ReadAsync(cancellationToken);
var buffer = result.Buffer;
bool success;
do
{
success = false;
if (TryReadTagAndLength(buffer, out var tagLength))
{
if (buffer.Length >= tagLength)
{
var ldap = ReadLdapMessage(buffer.Slice(0, tagLength));
ldap = packetCallback(ldap);
await WriteLdapMessage(socket, ldap, cancellationToken).ConfigureAwait(false);
buffer = buffer.Slice(tagLength);
success = true;
}
else if (tagLength > MaxMessageSize)
{
//maybe increase pipe size https://github.com/dotnet/corefx/issues/30689
throw new LdapException(ResultCode.UnwillingToPerform, "MaxMessageSize exceeded");
}
}
} while (success && buffer.Length > 2);
if (result.IsCompleted)
{
break;
}
reader.AdvanceTo(buffer.Start, buffer.End);
}
reader.Complete();
}
catch (LdapException ex)
{
errorCallback(ex);
socket.Close();
reader.Complete(ex);
}
catch (SocketException ex)
{
socket.Close();
reader.Complete(ex);
}
catch (OperationCanceledException ex)
{
socket.Close();
reader.Complete(ex);
}
catch (ObjectDisposedException ex)
{
if (ex.ObjectName != socket.GetType().FullName)
{
socket.Close();
}
if (ex.ObjectName != reader.GetType().FullName)
{
reader.Complete(ex);
}
}
}