Examples of MaxForwardsHeader

javax.sip.header.MaxForwardsHeader

The Max-Forwards header field must be used with any SIP method to limit the number of proxies or gateways that can forward the request to the next downstream server. This can also be useful when the client is attempting to trace a request chain that appears to be failing or looping in mid-chain.

The Max-Forwards value is an integer in the range 0-255 indicating the remaining number of times this request message is allowed to be forwarded. This count is decremented by each server that forwards the request. The recommended initial value is 70.

This header field should be inserted by elements that can not otherwise guarantee loop detection. For example, a B2BUA should insert a Max-Forwards header field.

For Example:
Max-Forwards: 6 @author BEA Systems, NIST @version 1.2

org.zoolu.sip.header.MaxForwardsHeader

SIP Header Max-Forwards The Max-Forwards header field serves to limit the number of hops a request can transit on the way to its destination. It consists of an integer that is decremented by one at each hop. If the Max-Forwards value reaches 0 before the request reaches its destination, it will be rejected with a 483(Too Many Hops) error response. A default Max-Forwards value 70 is used.

                // Create a new Cseq header
                CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(1L,
                        Request.INVITE);


                // Create a new MaxForwardsHeader
                MaxForwardsHeader maxForwards = headerFactory
                        .createMaxForwardsHeader(70);


                // Create the request.
                Request request = messageFactory.createRequest(requestURI,
                        Request.INVITE, callIdHeader, cSeqHeader, fromHeader,

   
      int err_code=0;
      
      // Max-Forwads
      if (err_code==0) 
      {  MaxForwardsHeader mfh=msg.getMaxForwardsHeader();
         if (mfh!=null && mfh.getNumber()==0) err_code=483;
      }
      // Loops
      // Insert also a temporary Loop-Tag header field in order to correctly compose
      // the branch field when forwarding the message.
      // This behaviour has been choosen since the message validation is done

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Examples of MaxForwardsHeader

Examples of javax.sip.header.MaxForwardsHeader

Examples of org.zoolu.sip.header.MaxForwardsHeader