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<tt>Hi Louis,<br>
<br>
The b2b_reply route is invoked for int incoming reply. This reply
is internally consumed and another one is generated on the other
side of the B2B (basically there are two back 2 back transactions).<br>
<br>
The new reply (on A side) is built based on information from the
incoming reply (on B side) - considering that the original INVITE
went from A to B.<br>
<br>
So, any change you do on incoming rely will be discards because a
new reply is to be built on the other side. Headers (as a whole)
may propagate via "custom_headers" parameters. Otherwise, whatever
append_hf() you do in b2b_reply will be lost (not translated to
the other side).<br>
<br>
Even more, the Contact has a special treatment as it is completely
rebuilt by the B2B - old Contact hdr is discarded and a new one
(pointing to B2B) is added in the outbound reply. So your changes
over the incoming contact do conflict with the changed the B2B
module does over the contact.<br>
<br>
In my test, having "contact" in the "custom_headers" and doing
remove_hf()+append_hf() on a contact on b2b_reply, results in two
Contact headers :<br>
- the one removed, added and carried via custom header (from
the incoming reply)<br>
- the one built and added internally by the B2B, pointing to
it self<br>
<br>
So, remove_hf() actually works, but you end up with that conflict
in having you and the B2B changing both the Contact hdr.<br>
<br>
As I understand, your goal is to preserve the username part in B2B
right ?<br>
<br>
Best regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 15.10.2015 21:40, Louis Rochon
wrote:<br>
</div>
<blockquote
cite="mid:5E14682204D78E488EC3435C01D723E3015CFF2E3819@SolaMail.solacom.com"
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">remove_hf
doesn't seem to work in route[b2b_reply]….Running OpenSIPS
1.11.5 on CentOS 6.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">This
problem started when I discovered that b2b_init_requests
removes the user part of the URI in the Contact: field.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">To
correct that, did a bit of scripting to correct the outgoing
invite:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">First,
handle contacts manually:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">modparam("b2b_logic",
"custom_headers",
"Priority;Calluid;Geolocation;Geolocation-Routing;Contact")<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">Second,
check out the incoming INVITE, and modify the host part to
be the OpenSIPs server itself (192.168.130.105):<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(ContactURI)=$ct.fields(uri);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(ContactURIHost)=$(var(ContactURI){uri.host});<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(ContactURIUser)=$(var(ContactURI){uri.user});<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(regedit)="/"+$(var(ContactURIHost))+"/192.168.130.105/g";<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(URIwSub)=$(var(ContactURI){re.subst,$var(regedit)});<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">Third,
in local_route, remove the incoming contact and replace with
my own:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">remove_hf("Contact");<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">append_hf("Contact:
$var(URIwSub)\r\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">Fourth,
send off the invite downstream (to 192.168.131.203):<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">b2b_init_request("FailOver",
<a class="moz-txt-link-rfc2396E" href="mailto:sip:$tU@192.168.131.203">"sip:$tU@192.168.131.203"</a>);<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">All
this works! Great, but the reply route, not:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">route[b2b_reply]
{<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">
xlog("b2b_reply Route ($ci)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">###Debug
Code<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Protocol
of received message: $pr\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Body
of request/reply: $rb\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Return
Code: $rc\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Request
Method: $rm\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Reply
Reason: $rr\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Reply
Status: $rs\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Transport
protocol of original R-URI: $oP\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Transport
protocol of R-URI: $rP\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Transport
protocol of destination uri: $dP\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Destination
set: $ds\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Destination
uri: $du\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:URI
of From header: $fu\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Domain
in request's original R-URI: $od\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New""
lang="FR-CA">xlog(">>>>>B2BRR:Request's
original URI: $ou\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Username
in request's original URI: $oU\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Domain
in URI of 'To' header: $td\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Complete
Request URI: $ru\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Username
in Request URI: $rU\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Username
in URI of 'To' header: $tU\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Surname
in URI of 'From' header : $fU\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
name:$ct.fields(name)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
uri:$ct.fields(uri)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
q param:$ct.fields(q)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
expires:$ct.fields(expires)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
methods:$ct.fields(methods)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:Contact
params:$ct.fields(params)\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(ContactURIRR)=$ct.fields(uri);<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(ContactURIHostRR)=$(var(ContactURIRR){uri.host});<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(regeditRR)="/"+$(var(ContactURIHostRR))+"/192.168.130.105/g";<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">$var(URIwSubRR)=$(var(ContactURIRR){re.subst,$var(regeditRR)});<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">if(remove_hf("Contact"))<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">{<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:removed
Contact\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">}
else {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:1.0in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">xlog(">>>>>B2BRR:DID
NOT removed Contact\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">};<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">#<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">#
xlog("Substituted Contact URI Variable Reply
Route:$var(URIwSubRR)\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">append_hf("Contact:
$var(URIwSubRR)\r\n");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">#replace_body_all("Contact",
"BlaBla");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">}<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">So
in route[b2b_reply], do the same treatment as in the invite.
The xlog says that it did remove the Contact, but it’s still
there, according to wireshark. The append_hf works fine, but
the remove_hf never works. I end up with 2 Contact.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New"">Any
ideas?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span
style="font-size:12.0pt;font-family:"Courier New"">
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA">Louis
Rochon</span></b><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA">Senior
Systems Designer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA">Solacom
Technologies<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA">819 205
8100 ext. 274<o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA"><a
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<p class="MsoNormal"><span style="font-family:"Courier
New";mso-fareast-language:EN-CA" lang="FR-CA"> <o:p></o:p></span></p>
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<pre wrap="">_______________________________________________
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