new test case

test/register04.sip

@@ -0,0 +1,11 @@
+REGISTER sip:iptel.org:5060 SIP/2.0
+To:poo [email protected]
+From: <sip:[email protected]>
+Call-ID: [email protected]
+CSeq: 4 REGISTER
+Via: SIP/2.0/UDP bat.iptel.org:5060
+User-Agent:  UbiquityUserAgent/4
+Expires: 0
+Content-Length: 0
+
+