megaco_compact_text???

Hakan Mattsson <>
Thu Mar 4 12:44:22 CET 2004


Oops, I forgot to cc the list.

/Håkan

---------- Forwarded message ----------
Date: Thu, 4 Mar 2004 10:07:52 +0100 (MET)
From: Hakan Mattsson <>
To: Carlos Rodríguez Alcalá Villagra <>
Subject: Re: megaco_compact_text???

On Wed, 3 Mar 2004, Carlos Rodríguez Alcalá Villagra wrote:

Carlos> With which it gives a syntax error, i guess that the error is in 'MEGACO/1'  that it must that be '!/1' ??

No, it is the profile that is erroneous, enclosed printouts below.
The profile must contain a name and a version separated by a slash:

   serviceChangeProfile = ProfileToken EQUAL NAME SLASH Version

I think that the easiest way to debug these kinds of errors is to use
built-in debug support in the Megaco application. The sequence chart
tool 'et' is quite powerful.

BTW, even if you use the compact text encoder in the megaco
application it will decode both short and long keywords. It is
only the encoder that will be using the short message style.

/Håkan

---
Håkan Mattsson
Ericsson
High Availability Software, DBMS Internals
http://www.erlang.org/~hakan/


1> M = "MEGACO/1 [192.168.0.108]:0
T=1 {
C= - {
SC=ROOT {
SV {
MT=RS,
AD=0,
V=1,
PF=TGW1,
RE=\"901 MGCold BOOT\", 19700101T0002}}}}".
2> megaco_compact_text_encoder:decode_message([], list_to_binary(M)).
{error,[{reason,{8,megaco_text_parser,{bad_profile,"tgw1"}}},
        {token,[{'SafeChars',1,"megaco/1"},
                {'LSBRKT',1},
                {'SafeChars',1,"192.168.0.108"},
                {'RSBRKT',1},
                {'COLON',1},
                {'SafeChars',1,"0"},
                {'SEP',1},
                {'TransToken',1,"t"},
                {'EQUAL',1},
                {'SafeChars',1,"1"},
                {'LBRKT',1},
                {'CtxToken',2,"c"},
                {'EQUAL',2},
                {'SafeChars',2,"-"},
                {'LBRKT',2},
                {'ServiceChangeToken',3,"sc"},
                {'EQUAL',3},
                {'SafeChars',3,"root"},
                {'LBRKT',3},
                {'ServicesToken',4,"sv"},
                {'LBRKT',4},
                {'MethodToken'|...},
                {...}|...]},
        {chars,<<77,69,71,65,67,79,47,49,32,91,49,57,50,46,49,54,56,46,48,46,49,48,...>>}]}
3> M2 = "MEGACO/1 [192.168.0.108]:0
T=1 {
C= - {
SC=ROOT {
SV {
MT=RS,
AD=0,
V=1,
PF=TGW1/42,
RE=\"901 MGCold BOOT\", 19700101T0002}}}}".
4> megaco_compact_text_encoder:decode_message([], list_to_binary(M2)).
{ok,{'MegacoMessage',asn1_NOVALUE,
                     {'Message',1,
                                {ip4Address,{'IP4Address',[192,168,0,108],0}},
                                {transactions,
                                    [{transactionRequest,
                                         {'TransactionRequest',
                                             1,
                                             [{'ActionRequest',
                                                  0,
                                                  asn1_NOVALUE,
                                                  asn1_NOVALUE,
                                                  [...]}]}}]}}}}



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