Examples of org.zoolu.sip.header.ViaHeader

org.zoolu.sip.header.ViaHeader
SIP Header Via. The Via header field indicates the transport used for the transaction and identifies the location where the response is to be sent.
When the UAC creates a request, it MUST insert a Via into that request. The protocol name and protocol version in the header field is SIP and 2.0, respectively.
The Via header field value MUST contain a branch parameter. This parameter is used to identify the transaction created by that request. This parameter is used by both the client and the server.
The branch parameter value MUST be unique across space and time for all requests sent by the UA. The exceptions to this rule are CANCEL and ACK for non-2xx responses. A CANCEL request will have the same value of the branch parameter as the request it cancels. An ACK for a non-2xx response will also have the same branch ID as the INVITE whose response it acknowledges.

         msg.setHeader(new Header(Loop_Tag,loop_tag));
         // check for loop
         if (!msg.hasRouteHeader()) 
         {  Vector v=msg.getVias().getHeaders();
            for (int i=0; i<v.size(); i++)
            {  ViaHeader vh=new ViaHeader((Header)v.elementAt(i));
               if (sip_provider.getViaAddress().equals(vh.getHost()) && sip_provider.getPort()==vh.getPort())
               {  // possible loop
                  if (!vh.hasBranch()) err_code=482;
                  else
                  {  // check branch
                     String branch=vh.getBranch();
                     if (branch.indexOf(loop_tag,branch.length()-loop_tag.length())>=0) err_code=482;
                  }
               }
            }
         }

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      }
      else proto=msg.getRequestLine().getAddress().getTransport();
      if (proto==null) proto=sip_provider.getDefaultTransport();
      
      // add Via
      ViaHeader via=new ViaHeader(proto,sip_provider.getViaAddress(),sip_provider.getPort());
      if (sip_provider.isRportSet()) via.setRport();
      String branch=sip_provider.pickBranch(msg);
      if (server_profile.loop_detection)
      {  String loop_tag=msg.getHeader(Loop_Tag).getValue();
         if (loop_tag!=null)
         {  msg.removeHeader(Loop_Tag);
            branch+=loop_tag;
         }
      }
      via.setBranch(branch);
      msg.addViaHeader(via);


      // decrement Max-Forwards
      MaxForwardsHeader maxfwd=msg.getMaxForwardsHeader();
      if (maxfwd!=null) maxfwd.decrement();

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   /** Processes the Proxy headers of the response.
     * Such headers are: Via, .. */
   protected Message updateProxingResponse(Message resp)
   {  printLog("inside updateProxingResponse(resp)",LogLevel.MEDIUM);
      ViaHeader vh=new ViaHeader((Header)resp.getVias().getHeaders().elementAt(0));
      if (vh.getHost().equals(sip_provider.getViaAddress())) resp.removeViaHeader();
      return resp;
   }

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     //transactions.put(acktc.getTransactionId(),acktc);
     acktc.request();


         Message req=tc.getRequestMessage();
         // select a new branch - rfc3261 says should be new on each request
         ViaHeader via=req.getViaHeader();
         req.removeViaHeader();
         via.setBranch(SipProvider.pickBranch());
         req.addViaHeader(via);
         req.setCSeqHeader(req.getCSeqHeader().incSequenceNumber());
         WwwAuthenticateHeader wah;
         if (code==401) wah=msg.getWwwAuthenticateHeader();
         else wah=msg.getProxyAuthenticateHeader();

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org.zoolu.sip.address.SipURL

org.zoolu.sip.dialog.ExtendedInviteDialog

org.zoolu.sip.provider.SipParser

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