[reSIProcate] missing Max-Forwards in CANCEL

[Björn Andersson]

Mandatory header Max-Forwards missing in CANCEL.

/Björn

--- Helper.cxx.orig    2008-03-20 14:51:45.000000000 +0100
+++ Helper.cxx    2008-03-20 14:58:11.000000000 +0100
@@ -545,20 +545,21 @@
 SipMessage*
 Helper::makeCancel(const SipMessage& request)
 {
    assert(request.isRequest());
    assert(request.header(h_RequestLine).getMethod() == INVITE);
    SipMessage* cancel = new SipMessage;
 
    RequestLine rLine(CANCEL, 
request.header(h_RequestLine).getSipVersion());
    rLine.uri() = request.header(h_RequestLine).uri();
    cancel->header(h_RequestLine) = rLine;
+   cancel->header(h_MaxForwards).value() = 70;
    cancel->header(h_To) = request.header(h_To);
    cancel->header(h_From) = request.header(h_From);
    cancel->header(h_CallId) = request.header(h_CallId);
    if (request.exists(h_ProxyAuthorizations))
    {
       cancel->header(h_ProxyAuthorizations) = 
request.header(h_ProxyAuthorizations);
    }
    if (request.exists(h_Authorizations))
    {
       cancel->header(h_Authorizations) = request.header(h_Authorizations);
 
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