[Serusers] route to PSTN

[Tobias Lindgren]

Troy,

"==" means IS
"=~" means IS LIKE
eg. "abcd == abcd" is true, "abcd == bcd" is false, whereas "abcd =~
bcd" still is true.

The "^" is part of regular expressions and means "starts with", eg.
"^abcd" means "starts with abcd".

/T

McAvan, Troy-P29897 said the following on 2006-03-14 19:52:
> Tobias,
> 	Thank you for your time and explanation. For =~  what does this mean? Does the = means something particular, and then does the ~ means something particular as well? Also one last thing, what does the ^ mean?
> 
> Thanks again,
> Troy
> 
> -----Original Message-----
> From: Tobias Lindgren [mailto:tobias.lindgren at ip-only.se]
> Sent: Tuesday, March 14, 2006 11:48 AM
> To: McAvan, Troy-P29897
> Cc: serusers at lists.iptel.org
> Subject: Re: [Serusers] route to PSTN
> 
> 
> I'm far from an expert myselfe, but here goes.. (inlined in your text..):
> 
> Br,
> /T
> 
> McAvan, Troy-P29897 said the following on 2006-03-14 19:32:
>> Would it be possible for someone to explain what each line means?
>> if(method=="INVITE")
> - If the SIP request method is an "INVITE", proceed with the code
> between { and }.
>> {
>>    if(uri =~ "^sip9.*@.*")
> - If the URI-field in the SIP request starts with and is like
> <sip9><anything>@<anything> proceed.
>>    {
>>         rewritehostport("ipofmediatrix:port");
> - Rewrite the host and port part of the SIP uri, eg. this is what I
> would like to do to for example forward this INVITE to another destination.
>>         if(!t_relay())
> - Relay the message to the new destination specified with
> rewritehostport(). Remember this SIP-conversation and statefully
> inspection of all the following messages (transactions) following this
> INVITE (read more about t_relay in the "tm"-module README-file). If
> there is an error in any of the following transactions (eg. a 404 Not
> Found SIP message), proceed with this code snippet.
>>         {
>>             sl_reply_error();
> - Replay statelessly with the errormessage found in t_relay (in my
> example, 404 Not Found).
>>         };
>>     };
>> };  
>> 
>> I am not a software guy and it would be great if someone could explain it line by line possibly.
>> 
>> Troy
>> 
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