The SIP RFC even states these headers SHOULD be included and that unknown headers should be ignored. On Wednesday, June 5, 2013, Michael Jerris wrote:
I think useless is incorrect here, at least for the Allow header.
On Jun 4, 2013, at 1:19 PM, Michael Collins <msc@freeswitch.org<javascript:_e({}, 'cvml', 'msc@freeswitch.org');>> wrote:
On Tue, Jun 4, 2013 at 3:46 AM, divyeshkamothi <dev.2981988@gmail.com<javascript:_e({}, 'cvml', 'dev.2981988@gmail.com');>
wrote:
it is not like that its working fine at customer end but its useless for customer so i was informed to remove.
IMHO it is a dangerous precedent to start messing with SIP headers and removing things that someone says is useless. It is a much better policy simply to ignore headers you don't use. In most cases that will be the safest way to go and will require the least amount of work.
-MC