doc/storage.txt | 30 ++++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/doc/storage.txt b/doc/storage.txt
index 8e76382..0aa6d9d 100644
@@ -18,6 +18,7 @@ Meta file Example
Meta file Keys/Values details
@@ -31,3 +32,32 @@ state: The message local state, possible values can be:
- "received": m-Retrieve.Conf PDU downloaded and successfully
- "draft": m-Send.Req PDU ready for sending.
- "sent": m-Send.Req PDU successfully sent.
+message_id: this is the value provided in the M-Send.conf PDU (assigned by MMSC
+in response to a M-Send.req message), this entry will only be created upon
+M-Send.conf message reception if the delivery report was requested.
+For sent messages, a group [delivery_status] could take place in addition to
+[info] if delivery report is requested.
+In this group, every recipient has a MMS Delivery status value which can be one
+of the following:
+ - "none": no report has been received yet.
+ - "expired": recipient did not retrieve the MMS before expiration.
+ - "retrieved": MMS successfully retrieved by the recipient.
+ - "rejected": recipient rejected the MMS.
+ - "deferred": recipient decided to retrieve the MMS at a later time.
+ - "indeterminate": cannot determine if the MMS reached its destination.
+ - "forwarded": recipient forwarded the MMS without retrieving it first.
+ - "unreachable": recipient is not reachable.
+Example of a sent_message meta file with delivery report requested