我有一个ios xmpp客户端，我希望能够获取从iMessage（ichat）发送的图像。 我正在实施XEP-0137以便能够从iChat获取文件。
当User1使用iMessage将图像发送到用我的xmpp客户端登录的user2时，它得到了（我与这部分无关，我完全无法控制它，因为它是由Apple标准聊天应用程序创建的，我只是想处理这个消息）：
<message xmlns="jabber:client" from="user1@ejabberd.com/Sakj2019MacBookPro" to="user2@ejabberd.com"
type="chat" id="E399E1FF-8D8D-4220-83DD-B8615E6DF277">
<x xmlns="http://www.apple.com/xmpp/message-attachments">
<attachment id="1">
<sipub xmlns="http://jabber.org/protocol/sipub" from="user1@ejabberd.com/Sakj2019MacBookPro"
id="sipubid_7D0EF6A6" mime-type="binary/octet-stream" profile="http://jabber.org/protocol/si/profile/file-transfer">
<file xmlns="http://jabber.org/protocol/si/profile/file-transfer" xmlns:ichat="apple:profile:transfer-extensions"
name="small.png" size="1182" ichat:posixflags="000001A4" />
</sipub>
</attachment>
</x>
<body/>
<html xmlns="http://jabber.org/protocol/xhtml-im">
<body xmlns="http://www.w3.org/1999/xhtml"><img alt="small.png" src="message-attachments:1" width="144" height="144" />
</body>
</html>
<x xmlns="jabber:x:event">
<composing/>
</x>
<active xmlns="http://jabber.org/protocol/chatstates" />
</message>
收到此消息后，我处理它并根据http://xmpp.org/extensions/xep-0137.html向发送者（user1）发送IQ：
<iq type='get'
id='sipub-request-0'
from='user2@ejabberd.com/sdafz23123sdf'
to='user1@ejabberd.com/Sakj2019MacBookPro'>
<start xmlns='http://jabber.org/protocol/sipub'
id='sipubid_7D0EF6A6'/>
</iq>
但是我收到了这个错误： 发件人否认，因为禁止接收器
<iq type='error'
id='sipub-set-1'
from='user1@ejabberd.com/Sakj2019MacBookPro'
to='user2@ejabberd.com/sdafz23123sdf'>
<start xmlns='http://jabber.org/protocol/sipub'>sipubid_7D0EF6A6</start>
<error code='403' type='auth'>
<forbidden xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
</error>
</iq>
我尝试了不同的东西，但仍然没有运气！
这是我的ejabberd服务器日志的一部分，显示我正在获取图像：
2017-02-03 14:22:30.648 [debug] <0.23733.0>@ejabberd_receiver:process_data:284 Received XML on stream = <<"\r\n">>
2017-02-03 14:22:30.648 [debug] <0.23733.0>@shaper:update:120 State: {maxrate,1000,32.728263634574134,1486149717476774}, Size=2
M=1.0166363715950295, I=33171.384
2017-02-03 14:22:34.140 [debug] <0.23733.0>@ejabberd_receiver:process_data:284 Received XML on stream = <<60,109,101,115,115,97,103,101,32,116,111,61,34,98,101,115,97,116,45,108,100,110,64,101,106,97,98,98,101,114,100,45,100,101,118,46,109,111,114,103,105,105,106,46,99,111,109,34,32,116,121,112,101,61,34,99,104,97,116,34,32,105,100,61,34,69,51,57,57,69,49,70,70,45,56,68,56,68,45,52,50,50,48,45,56,51,68,68,45,66,56,54,49,53,69,54,68,70,50,55,55,34,62,60,120,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,119,119,119,46,97,112,112,108,101,46,99,111,109,47,120,109,112,112,47,109,101,115,115,97,103,101,45,97,116,116,97,99,104,109,101,110,116,115,34,62,60,97,116,116,97,99,104,109,101,110,116,32,105,100,61,34,49,34,62,60,115,105,112,117,98,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,106,97,98,98,101,114,46,111,114,103,47,112,114,111,116,111,99,111,108,47,115,105,112,117,98,34,32,102,114,111,109,61,34,116,109,103,97,100,109,105,110,64,101,106,97,98,98,101,114,100,45,100,101,118,46,109,111,114,103,105,105,106,46,99,111,109,47,66,101,115,97,116,226,128,153,115,32,77,97,99,66,111,111,107,32,80,114,111,34,32,105,100,61,34,115,105,112,117,98,105,100,95,55,68,48,69,70,54,65,54,34,32,109,105,109,101,45,116,121,112,101,61,34,98,105,110,97,114,121,47,111,99,116,101,116,45,115,116,114,101,97,109,34,32,112,114,111,102,105,108,101,61,34,104,116,116,112,58,47,47,106,97,98,98,101,114,46,111,114,103,47,112,114,111,116,111,99,111,108,47,115,105,47,112,114,111,102,105,108,101,47,102,105,108,101,45,116,114,97,110,115,102,101,114,34,62,60,102,105,108,101,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,106,97,98,98,101,114,46,111,114,103,47,112,114,111,116,111,99,111,108,47,115,105,47,112,114,111,102,105,108,101,47,102,105,108,101,45,116,114,97,110,115,102,101,114,34,32,120,109,108,110,115,58,105,99,104,97,116,61,34,97,112,112,108,101,58,112,114,111,102,105,108,101,58,116,114,97,110,115,102,101,114,45,101,120,116,101,110,115,105,111,110,115,34,32,110,97,109,101,61,34,115,109,97,108,108,46,112,110,103,34,32,115,105,122,101,61,34,49,49,56,50,34,32,105,99,104,97,116,58,112,111,115,105,120,102,108,97,103,115,61,34,48,48,48,48,48,49,65,52,34,47,62,60,47,115,105,112,117,98,62,10,60,47,97,116,116,97,99,104,109,101,110,116,62,10,60,47,120,62,10,60,98,111,100,121,62,60,47,98,111,100,121,62,10,60,104,116,109,108,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,106,97,98,98,101,114,46,111,114,103,47,112,114,111,116,111,99,111,108,47,120,104,116,109,108,45,105,109,34,62,60,98,111,100,121,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,119,119,119,46,119,51,46,111,114,103,47,49,57,57,57,47,120,104,116,109,108,34,32,62,60,105,109,103,32,97,108,116,61,34,115,109,97,108,108,46,112,110,103,34,32,115,114,99,61,34,109,101,115,115,97,103,101,45,97,116,116,97,99,104,109,101,110,116,115,58,49,34,32,119,105,100,116,104,61,34,49,52,52,34,32,104,101,105,103,104,116,61,34,49,52,52,34,32,47,62,60,47,98,111,100,121,62,60,47,104,116,109,108,62,60,120,32,120,109,108,110,115,61,34,106,97,98,98,101,114,58,120,58,101,118,101,110,116,34,62,60,99,111,109,112,111,115,105,110,103,47,62,60,47,120,62,10,60,97,99,116,105,118,101,32,120,109,108,110,115,61,34,104,116,116,112,58,47,47,106,97,98,98,101,114,46,111,114,103,47,112,114,111,116,111,99,111,108,47,99,104,97,116,115,116,97,116,101,115,34,47,62,60,47,109,101,115,115,97,103,101,62,10>>
2017-02-03 14:22:34.141 [debug] <0.23733.0>@shaper:update:120 State: {maxrate,1000,16.394278152421222,1486149750648302}, Size=913
M=460.2729211476611, I=3492.751
这是我为user1获取的所有功能：
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="pubsub" type="pep"/>
<identity category="server" type="im" name="ejabberd"/>
<x xmlns="jabber:x:data" type="result">
<field var="FORM_TYPE" type="hidden">
<value>http://jabber.org/network/serverinfo</value>
</field>
</x>
<feature var="http://jabber.org/protocol/commands"/>
<feature var="http://jabber.org/protocol/disco#info"/>
<feature var="http://jabber.org/protocol/disco#items"/>
<feature var="http://jabber.org/protocol/offline"/>
<feature var="http://jabber.org/protocol/pubsub"/>
<feature var="http://jabber.org/protocol/pubsub#access-authorize"/>
<feature var="http://jabber.org/protocol/pubsub#access-open"/>
<feature var="http://jabber.org/protocol/pubsub#access-presence"/>
<feature var="http://jabber.org/protocol/pubsub#access-whitelist"/>
<feature var="http://jabber.org/protocol/pubsub#auto-create"/>
<feature var="http://jabber.org/protocol/pubsub#auto-subscribe"/>
<feature var="http://jabber.org/protocol/pubsub#collections"/>
<feature var="http://jabber.org/protocol/pubsub#config-node"/>
<feature var="http://jabber.org/protocol/pubsub#create-and-configure"/>
<feature var="http://jabber.org/protocol/pubsub#create-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#delete-items"/>
<feature var="http://jabber.org/protocol/pubsub#delete-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#filtered-notifications"/>
<feature var="http://jabber.org/protocol/pubsub#get-pending"/>
<feature var="http://jabber.org/protocol/pubsub#instant-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#item-ids"/>
<feature var="http://jabber.org/protocol/pubsub#last-published"/>
<feature var="http://jabber.org/protocol/pubsub#manage-subscriptions"/>
<feature var="http://jabber.org/protocol/pubsub#member-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#modify-affiliations"/>
<feature var="http://jabber.org/protocol/pubsub#outcast-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#persistent-items"/>
<feature var="http://jabber.org/protocol/pubsub#presence-notifications"/>
<feature var="http://jabber.org/protocol/pubsub#presence-subscribe"/>
<feature var="http://jabber.org/protocol/pubsub#publish"/>
<feature var="http://jabber.org/protocol/pubsub#publish-only-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#publisher-affiliation"/>
<feature var="http://jabber.org/protocol/pubsub#purge-nodes"/>
<feature var="http://jabber.org/protocol/pubsub#retract-items"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-affiliations"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-default"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-items"/>
<feature var="http://jabber.org/protocol/pubsub#retrieve-subscriptions"/>
<feature var="http://jabber.org/protocol/pubsub#shim"/>
<feature var="http://jabber.org/protocol/pubsub#subscribe"/>
<feature var="http://jabber.org/protocol/pubsub#subscription-notifications"/>
<feature var="https://apple.com/push"/>
<feature var="iq"/>
<feature var="jabber:iq:last"/>
<feature var="jabber:iq:privacy"/>
<feature var="jabber:iq:register"/>
<feature var="jabber:iq:version"/>
<feature var="msgoffline"/>
<feature var="presence"/>
<feature var="urn:xmpp:blocking"/>
<feature var="urn:xmpp:carbons:1"/>
<feature var="urn:xmpp:carbons:2"/>
<feature var="urn:xmpp:mam:0"/>
<feature var="urn:xmpp:mam:1"/>
<feature var="urn:xmpp:mam:tmp"/>
<feature var="urn:xmpp:ping"/>
<feature var="vcard-temp"/>
</query>
我认为缺少这些功能：
<feature var="http://jabber.org/protocol/bytestreams">
<feature var="http://jabber.org/protocol/si/profile/file-transfer">
<feature var="http://jabber.org/protocol/sipub">
任何想法如何在ejabberd中启用它们？