Parse error at the message level

Hello All,

I was wondering about the correct behavior when a parse error at the
Message level is encountered (i.e. before any transaction request or
reply was parsed).

For example, consider the following message:

    !/3 [XXX 123.123.123.4]:55555
    T = 5 {
      ...
    }

This message should fail parsing, as it contains an illegal mId.


Option 1 is to reply with a message containing only an error descriptor.
Error code #410 seems the most appropriate. It should look something
like this:

    MEGACO/3 [124.124.124.222]:55555
    Error = 410 { "Incorrect identifier: [XXX 123.123.123.4]" }


Option 2 is to simply ignore the offending message and not generate any
reply. One (weak) corroboration to this approach is that the definition
of error #410 is "The transaction request(s) has been disregarded due to
a syntax error..."; and when parsing is aborted it is not known whether
the message contains any transaction requests.


My personal preference is option 1.

Thanks,
Elad