ejabberd: can't seem to enable Stream Management - xmpp

Question

Heyo,
I'm having a bit of a headache trying to get Stream Management (XEP-0198) working in ejabberd 17.04 in Ubuntu 16.10, though I've had this problem since ejabberd 17.03, and in spite of searching just about everywhere, I can't seem to get find a straight answer beyond either explicitly adding stream_management: true to my config or leaving it out and letting that setting default to true. None of which seem to be offering any success, however.
My only indication that Stream Management isn't working at the moment is via the Android app Conversations, which lists the extension as Unavailable, though the app picks up the extension from another server just fine. I can't seem to see any errors in ejabberd's logs either, barring the one time I caused a syntax error that's since been corrected.
This is my current config (yes, I know, it's adapted form a sample and I need to clean some junk out):
##
### ejabberd configuration file
### Archipel Sample default condiguration
define_macro:
'CERT_LOCATION': "/certs/live/social.diskseven.com/ejabberd.pem"
'DH_PARAMS': "/certs/live/social.diskseven.com/dhparams.pem"
### =========
### DEBUGGING
# Increase this if you want sone insane erlang debug
loglevel: 3
### ================
### SERVED HOSTNAMES
# Change it for you FQDN
hosts:
- "xmpp.diskseven.com"
### ===============
### LISTENING PORTS
listen:
-
#it's a good idea to put xmlrpc behing a reverse proxy
#because you can't use tls directly, make it listen to localhost
ip: "::1"
# and read the Security section on the wiki
port: 4560
module: ejabberd_xmlrpc
access_commands:
xmlrpcaccess:
all : []
## ejabberd c2s
-
ip: "::"
port: 5222
stream_management: true
module: ejabberd_c2s
resend_on_timeout: if_offline
##
## If you installed a SSL
## certificate, specify the full path to the
## file and uncomment this line:
##
certfile: 'CERT_LOCATION'
starttls: true
starttls_required: true
ciphers: "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH"
protocol_options:
- "no_sslv2"
- "no_sslv3"
- "no_tlsv1"
- "no_tlsv1_1"
max_stanza_size: 65536000
shaper: c2s_shaper
access: c2s
## ejabbed s2s
-
ip: "::"
port: 5269
module: ejabberd_s2s_in
max_stanza_size: 65536000
## ejabberd http/s and websocket/s
-
ip: "::"
port: 5280
module: ejabberd_http
request_handlers:
"/xmpp": ejabberd_http_ws
# if you want to use starttls with websock
# the URI will be wss://
# please be sure that the certificate belong
# to a trusted AC in your browser
certfile: 'CERT_LOCATION'
dhfile: 'DH_PARAMS'
# tls: true
web_admin: true
http_bind: true
### ===
### S2S
s2s_access: all
s2s_use_starttls: required
s2s_certfile: 'CERT_LOCATION' #concantinated cert.
s2s_dhfile: 'DH_PARAMS'
s2s_ciphers: "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH"
s2s_protocol_options:
- "no_sslv2"
- "no_sslv3"
- "no_tlsv1"
- "no_tlsv1_1"
## domain_certfile: Specify a different certificate for each served hostname.
##
##host_config:
## "xmpp.diskseven.com":
## domain_certfile: 'CERT_LOCATION'
## "conference.xmpp.diskseven.com":
## domain_certfile: 'CERT_LOCATION'
### ==============
### AUTHENTICATION
auth_method: internal
### ===============
### TRAFFIC SHAPERS
shaper:
# in B/s
normal: 1000
fast: 50000000
### ====================
### ACCESS CONTROL LISTS
acl:
admin:
user:
- "admin": "xmpp.diskseven.com"
local:
user_regexp: ""
### ============
### ACCESS RULES
access:
max_user_sessions:
all: 5
local:
local: allow
c2s:
blocked: deny
all: allow
c2s_shaper:
admin: none
all: fast
s2s_shaper:
all: fast
s2s_access:
all: allow
announce:
admin: allow
configure:
admin: allow
muc_admin:
admin: allow
muc_create:
local: allow
muc:
all: allow
pubsub_createnode:
all: allow
register:
all: deny
xmlrpcaccess:
admin : allow
### Frequency of account registration
registration_timeout: 600
### ================
### DEFAULT LANGUAGE
language: "en"
### =======
### MODULES
modules:
mod_adhoc: []
mod_announce:
access: announce
mod_blocking: []
mod_caps: []
mod_client_state: []
mod_carboncopy: []
mod_configure: []
mod_disco: []
mod_http_bind:
max_inactivity: 400 # timeout valie for BOSH usefull for a large number of VM
mod_http_upload: []
mod_irc: []
mod_last: []
mod_mam: []
mod_muc:
host: "conference.#HOST#"
access: all
access_create: muc_create
access_persistent: muc_create
access_admin: muc_admin
mod_offline: []
mod_privacy: []
mod_private: []
mod_pubsub:
access_createnode: pubsub_createnode
ignore_pep_from_offline: true
last_item_cache: false
max_items_node: 1000
plugins:
- "flat"
- "hometree"
- "pep"
pep_mapping:
"urn:xmpp:microblog:0": "mb"
mod_ping:
send_pings: true
ping_interval: 60
ping_ack_timeout: 30
timeout_action: kill
mod_register:
access: register
mod_roster:
versioning: true
mod_shared_roster: []
mod_time: []
mod_vcard: []
mod_version: []
mod_admin_extra: []
# mod_fail2ban:
# c2s_auth_ban_lifetime: 1300
# c2s_max_auth_failures: 5

Answer 1

In ejabberd 17.03+ stream management is implemented as a separate module: mod_stream_mgmt. You should have read release notes ;)