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支持 rfc3261 section-12.2.1.1

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xugo
2025-09-13 21:01:45 +08:00
parent 40fa98dc98
commit 74c64b062d
1 changed files with 13 additions and 1 deletions
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14
pkg/gbs/sip/request.go
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@@ -78,7 +78,19 @@ func NewRequestFromResponse(method string, inviteResponse *Response) *Request {
CopyHeaders("Call-ID", inviteResponse, ackRequest)
cseq, _ := inviteResponse.CSeq()
cseq.MethodName = method
cseq.SeqNo++
// https://www.rfc-editor.org/rfc/rfc3261.html#section-12.2.1.1
// The Call-ID of the request MUST be set to the Call-ID of the dialog.
// Requests within a dialog MUST contain strictly monotonically
// increasing and contiguous CSeq sequence numbers (increasing-by-one)
// in each direction (excepting ACK and CANCEL of course, whose numbers
// equal the requests being acknowledged or cancelled). Therefore, if
// the local sequence number is not empty, the value of the local
// sequence number MUST be incremented by one, and this value MUST be
// placed into the CSeq header field.
if !(method == MethodACK || method == MethodCancel) {
cseq.SeqNo++
}
ackRequest.AppendHeader(cseq)
ackRequest.SetSource(inviteResponse.Destination())
ackRequest.SetDestination(inviteResponse.Source())