[reSIProcate] SDP Contents not getting created.....

[Alan Hawrylyshen]

On 2005.12.10, at 02:57 , John Draper wrote:
>
>
>>
>> - Don’t build SDP as ASCII, use the API in the SdpContents class.
>
> I would if I knew how,  or could find some example code that does  
> this.  I did find
> the BasicCall.cxx code,  but I couldn't figure out how to use %s  
> string substitution,
> and had asked list people this very question, but got no volunteers  
> to tell me how,
> so I'm stumbling along trying things until I get it right.
>


testSdp.cxx --
   sdp.session().connection().getAddress() = Data("10.1.1.1");
etc.

>> - Just because a test driver messes around with ASCII to  
>> SdpContents  conversion doesn’t mean it’s a good idea.
>
> I'm sure it isn't,  I just don't know better because I haven't  
> found out how to do things, so I'm having
> to do a lot of experimenting, and am now (FINALLY) able to break  
> the program at key places with the source level
> debugger and examine data.  I just recently got to this level of  
> progress, and it's now made it a lot easier for me to analyse whats  
> going on.
>
> For instance,  in my application,  my recipient has a SIP address  
> pointing to a domain that is NOT
> the SIP server.  They (my company) are not using DNS SRV,  but I  
> figured out that I can
> do this....   to.param(p_maddr) = "213.167.79.25";  to force it to  
> use this IP as the SIP
> server I want.   I don't know if this is the "proper" way to do  
> this,  but it does work,
> and I'm sending out the proper INVITE message and it goes to the  
> right server,  but when
> I ommitted this statement, it went to our web site,  because the  
> code tried
> to resolve the "domain.com" domain name,  which pointed to their  
> web server, which
> obviously not where I want to sent the INVITE request.
>
> If you've read my earlier postings,  you'll see my asking for the  
> proper way to do this.
>
>> - Read the Data class definition, it covers Data manipulation  
>> (which  you almost never need) adequately.
>
> I have....  over and over.  But I couldn't figure out how to  
> specify string substitution
> by inserting an IP address into a %s format using the construct in  
> the BasicCall.cxx.
>

Because %foo is a C-ism and this stack is C++. Learn how to use  
std::string, resip::Data is quite similar in many ways.

> Care to tell me how?   I would like to code this properly of  
> course...  I only did it that
> way because I couldn't think of any other way to do it.  The test  
> code does not need
> to do string substitution like I do.
>

You don't either -- see testSdp.cxx or SdpContents for the methods /  
etc.