[reSIProcate] no Contact allowed in MESSAGE

[John Gregg <jgregg@xxxxxxxxx>]

As per RFC 3428, section 4:

MESSAGE requests do not initiate dialogs.  User Agents MUST NOT
   insert Contact header fields into MESSAGE requests.

Accordingly, I think the following change should be made to 
Dialog::makeRequest() (diff from Dialog.cxx, version 1.9.6 attached):

   request.remove(h_Contacts);
   if (method != MESSAGE) // RFC 3428, section 4: no Contact allowed in 
MESSAGE
   {
request.header(h_Contacts).push_front(mLocalContact);
   }

Index: Dialog.cxx
===================================================================
--- Dialog.cxx	(revision 27435)
+++ Dialog.cxx	(working copy)
@@ -1010,7 +1010,10 @@
    request.remove(h_Replaces);
 
    request.remove(h_Contacts);
-   request.header(h_Contacts).push_front(mLocalContact);
+   if (method != MESSAGE) // RFC 3428, section 4: no Contact allowed in MESSAGE
+   {
+       request.header(h_Contacts).push_front(mLocalContact);
+   }
 
    request.header(h_CSeq).method() = method;
    request.header(h_MaxForwards).value() = 70;