[Users] $rt setting avp to the "To" header instead of the "Refer-To" header

[Kanakatti Mahesh Subramanya]

Given the following packet

REFER sip:9546236300 at 69.25.47.137:5090 SIP/2.0
Via: SIP/2.0/UDP 192.168.28.118;branch=z9hG4bK5eb7146d4B8F8EA4
From: <sip:mahesh.aptela at 66.23.129.213>;tag=AB447651-36547B1E
To: "operator.aptela" <sip:9546236300 at 69.25.47.137:5090>;tag=as6c1b062a
Route: <sip:66.23.129.213;ftag=as6c1b062a;lr=on>
CSeq: 2 REFER
Call-ID: 688b089d4b10573715a49690228f1586 at 69.25.47.137
Contact: <sip:mahesh.aptela at 192.168.28.118>
User-Agent: PolycomSoundPointIP-SPIP_500-UA/1.4.1
Refer-To: sip:7100 at flareon.aptela.com:5060
Referred-By: <sip:mahesh.aptela at 66.23.129.213>
Max-Forwards: 70
Content-Length: 0


avp_printf() sets $rt to "sip:9546236300 at 69.25.47.137:5090" instead of 
"sip:7100 at flareon.aptela.com:5060"

trace follows

When you run
avp_write("$hdr[Refer-To]", "$savedRefer");
avp_print();
you get

2(5034) DEBUG:                 id=<65>
 2(5034) DEBUG:                 val_str=<sip:7100 at flareon.aptela.com:5060>

When you run
avp_printf("$savedRefer", "$rt");
avp_print();
you get

 2(5034) DEBUG:                 id=<65>
 2(5034) DEBUG:                 val_str=<sip:9546236300 at 69.25.47.137:5090>


t
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