No timestamp on BYE

Hello Everyone,

Anyone knows why there’s no date parameter on the BYE session? Thanks. I need the timestamp for both handshakes.

INVITE sip:16193926034@168.215.247.130 SIP/2.0
Via: SIP/2.0/UDP 3.1.193.59:5060;branch=z9hG4bK26889577;rport
Max-Forwards: 70
From: "V9261251140038352211" <sip:+16199401099@3.1.193.59>;tag=as14f1cf81
To: <sip:16193926034@168.215.247.130>
Contact: <sip:+16199401099@3.1.193.59:5060>
Call-ID: 38be8d8672cd1b891fa6abfb7b7f5fbf@3.1.193.59:5060
CSeq: 102 INVITE
User-Agent: Asterisk PBX 13.21.0-vici
Date: Thu, 26 Sep 2019 16:51:21 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Remote-Party-ID: "V9261251140038352211" <sip:+16199401099@3.1.193.59>;party=calling;privacy=off;screen=no
Content-Type: application/sdp
Content-Length: 265
BYE sip:16193926034@168.215.247.130:5060 SIP/2.0
Via: SIP/2.0/UDP 3.1.193.59:5060;branch=z9hG4bK133badef;rport
Route: <sip:168.215.247.130:5060;lr>,<sip:sansay1313999796rdb126985@67.221.8.52:5060;lr;transport=udp>
Max-Forwards: 70
From: "V9261251140038352211" <sip:+16199401099@3.1.193.59>;tag=as14f1cf81
To: <sip:16193926034@168.215.247.130>;tag=sansay1313999796rdb126985
Call-ID: 38be8d8672cd1b891fa6abfb7b7f5fbf@3.1.193.59:5060
CSeq: 103 BYE
User-Agent: Asterisk PBX 13.21.0-vici
Content-Length: 0

Date is an optional header there, and chan_sip does not place it into the BYE. Doing so would require modifying it.

Thanks for the info.

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