Invalid 431 response when server is paused
julien at trigofacile.com
Wed Jan 4 20:21:10 UTC 2012
>> If I understand well the code, I see that the first command you send
>> is MODE STREAM, just after the initial greeting response. Unless
>> you receive 203, CAPABILITIES is sent. I believe it is a workaround
>> for Cyclone (probably amongst other servers).
> Yes. It seems a bit pointless to check CAPABILITIES if MODE STREAM
> failed, but the code was already there, so...
If a server supports CAPABILITIES, I believe it will also support MODE
STREAM. Sending CAPABILITIES when MODE STREAM fails is therefore
pointless, as you say, but who knows, maybe in a (far) future, it will
be useful again owing to the following note in RFC 4644;
2.3. MODE STREAM Command
Servers MUST accept the
MODE STREAM command for backwards compatibility with legacy clients
that don't use the CAPABILITIES discovery command.
NOTE: This command may be removed from a future version of this
specification, therefore clients are urged to transition to the
CAPABILITIES command wherever possible.
> if we connect to an nnrpd that happens to allow posting from
> us, we'll start injecting articles via nnrpd's IHAVE, which could be
> unfortunate (or at least, be really slow, while appearing to work).
An advantage of nnrpd's IHAVE is that it can benefit from the native
STARTTLS extension nnrpd has (and therefore also compression TLS can
do), or SASL authentication.
All of that is of course possible if RT/NTS supports it.
I know stunnel can be used with innd as a way to use an encrypted
connection... Anyway, I was only giving you a possible use for nnrpd's
Is nnrpd's IHAVE "*really* slow"? (I have not benchmarked it; I ask in
case you already compared it to innd's IHAVE and had figures.)
> (I recall some confusion about whether a line that starts
> with "." but has further text on it should be escaped or not.)
A confusion in an existing document?
RFC 3977 seems clear:
3.1.1. Multi-line Data Blocks
3. If any line of the data block begins with the "termination octet"
("." or %x2E), that line MUST be "dot-stuffed" by prepending an
additional termination octet to that line of the block.
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