[Users] Content-type in PUBLISH request

i started to experiment with sending PUBLISH requests using pua_mi module. if i understood correctly from RFC 3903, PUBLISH request should contain a content-type header, such as Content-Type: application/pidf+xml PUBLISH request sent via pua_mi does not contain any content-type header. should one be added so that the receiver of PUBLISH request could know how to decode the body? another question related to this is, what event packages does openser presence server support? i assume that it supports "presence" event package (where content type usually is pidf+xml), but how about "message-summary" event package (RFC 3842) that could be used to publish message waiting events? -- juha