[asterisk-bugs] [JIRA] (ASTERISK-21759) chan_sip creates a new local tag (from-tag) for every register message

[Matt Jordan (JIRA)]

Matt Jordan created ASTERISK-21759:
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             Summary: chan_sip creates a new local tag (from-tag) for every register message
                 Key: ASTERISK-21759
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21759
             Project: Asterisk
          Issue Type: Bug
          Components: Channels/chan_sip/Registration
            Reporter: Pawel Pierscionek
            Severity: Minor


refreshing from-tag for each register message - even within the same dialog is against RFC. 

****** ADDITIONAL INFORMATION ******

from-tag should be consistent within a dialog otherwise some SIP validators/firewalls/proper proxies might drop  the register message as it does not follow RFC. 

sipXecs is such an example. 

removing the chan_sip.c line that contains the comment
"create a new local tag for every register attempt" seems to solve the problem. 


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