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:bob@biloxi.example.com SIP/2.0
Via: SIP/2.0/TCP client.atlanta.example.com:5060;branch=z9hG4bK74bf9
Max-Forwards: 70
From: Alice sip:alice@atlanta.example.com;tag=9fxced76sl
To: Bob sip:bob@biloxi.example.com
Call-ID: 3848276298220188511@atlanta.example.com
P-MyHeader: myHeaderValue
CSeq: 2 INVITE

Thanks a lot for your help !