Merged revisions 200946 via svnmerge from

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  r200946 | dvossel | 2009-06-16 11:03:30 -0500 (Tue, 16 Jun 2009) | 32 lines
  
  SIP transport type issues
  
  What this patch addresses:
  1. ast_sip_ouraddrfor() by default binds to the UDP address/port
  reguardless if the sip->pvt is of type UDP or not.  Now when no
  remapping is required, ast_sip_ouraddrfor() checks the sip_pvt's
  transport type, attempting to set the address and port to the
  correct TCP/TLS bindings if necessary.
  2.  It is not necessary to send the port number in the Contact
  header unless the port is non-standard for the transport type.
  This patch fixes this and removes the todo note.
  3.  In sip_alloc(), the default dialog built always uses transport
  type UDP.  Now sip_alloc() looks at the sip_request (if present)
  and determines what transport type to use by default.
  4.  When changing the transport type of a sip_socket, the file
  descriptor must be set to -1 and in some cases the tcptls_session's
  ref count must be decremented and set to NULL.  I've encountered
  several issues associated with this process and have created a function,
  set_socket_transport(), to handle the setting of the socket type.
  
  
  (closes issue #13865)
  Reported by: st
  Patches:
        dont_add_port_if_tls.patch uploaded by Kristijan (license 753)
        13865.patch uploaded by mmichelson (license 60)
        tls_port_v5.patch uploaded by vrban (license 756)
        transport_issues.diff uploaded by dvossel (license 671)
  Tested by: mmichelson, Kristijan, vrban, jmacz, dvossel
  
  Review: https://reviewboard.asterisk.org/r/278/
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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@200992 f38db490-d61c-443f-a65b-d21fe96a405b

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