Another possibility is that dropping messages with long lines is an
explicit policy of the ALG, rather than just being a crappy
implementation. If so, then the responsibility lies with whoever set the
policy.
Thanks,
Paul
Paul Kyzivat wrote:
>
> Iñaki Baz Castillo wrote:
>> Hi, in case a SIP message (i.e. MESSAGE text/plain) contains a very
>> long line in the body (a long text with no line breaks), could it
>> become a problem?
>>
>> Unfortunately I've seen some SIP ALG routers dropping SIP messages if
>> they contain long lines in the message body, but I expect that is an
>> issue in the SIP ALG router itself.
>>
>> Any comment please? Thanks a lot.
>
> crappy implementations.
>
> They need to just get over it and do the right thing.
> There is one certainty about the length of lines, headers, parameters,
> etc.: None of them will be any longer than the message as a whole.
> If you have managed to read the message so you can parse it, you should
> be able to handle any piece of it without imposing length constraints
> that are not imposed by the syntax.
>
> Of course, in certain cases something may exceed some other
> uncontrollable bound on another part of the system. E.g. If your MESSAGE
> is being gatewayed to SMS which imposes its own limit on how long the
> content can be. But that is a different sort of a problem than an ALG
> barfing on the message.
>
> Thanks,
> Paul
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