How to extract an unrecognized SIP header with pyshark

[othomas-dev]

Hello,

Does someone know how to extract an unrecognized SIP header with pyshark ?

for instance, the header "P-MyHeader" below :

INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/TCP client.atlanta.example.com:5060;branch=z9hG4bK74bf9
Max-Forwards: 70
From: Alice sip:[email protected];tag=9fxced76sl
To: Bob sip:[email protected]
Call-ID: [email protected]
P-MyHeader: myHeaderValue
CSeq: 2 INVITE

Thanks a lot for your help !