Hello,
I see the following in res_pjsip_pubsub.c:
if (expires_header->ivalue == 0) {
ast_debug(1, "Subscription request from endpoint %s
rejected. Expiration of 0 is invalid\n",
ast_sorcery_object_get_id(endpoint));
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 400,
NULL, NULL, NULL);
return PJ_TRUE;
}
However, according to RFC 2365, value 0 is perfectly valid, and should
have the effect of ending the subscription.
A natural consequence of this scheme is that a SUBSCRIBE with an
"Expires" of 0 constitutes a request to unsubscribe from an event.
Or is my understanding wrong? Is there some other way to unsubscribe?
Best regards,
Nik
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