我正在使用XMPP处理即时消息应用。我想在添加朋友时搜索用户以确定用户是否存在。我在http://xmpp.org/extensions/xep-0055.html上阅读了XEP-0055,并发送了iq,如示例1.请求搜索字段。然后我收到了以下回复:
<iq xmlns="jabber:client" type="result" id="search2" from="search.127.0.0.1" to="admin@127.0.0.1/iPhone">
<query xmlns="jabber:iq:search">
<instructions>
The following fields are available for searching. Wildcard (*) characters are allowed as part of the query.
</instructions>
<first></first>
<last></last>
<nick></nick>
<email></email>
<x xmlns="jabber:x:data" type="form">
<title>
Advanced User Search
</title>
<instructions>
The following fields are available for searching. Wildcard (*) characters are allowed as part of the query.
</instructions>
<field var="FORM_TYPE" type="hidden">
<value>jabber:iq:search</value>
</field>
<field var="search" type="text-single" label="Search">
<required></required>
</field>
<field var="Username" type="boolean" label="Username">
<value>1</value>
</field>
<field var="Name" type="boolean" label="Name">
<value>1</value>
</field>
<field var="Email" type="boolean" label="Email">
<value>1</value>
</field>
</x>
</query>
</iq>
我想搜索字段&#34;用户名&#34;我发送了iq
<iq type="set" to="search.127.0.0.1" id="search2" from="admin@127.0.0.1" xml:lang="en"><query xmlns="jabber:iq:search"><Username>gq</Username></query></iq>
但我收到了错误回复
<iq xmlns="jabber:client" type="error" id="search2" from="search.127.0.0.1" to="admin@127.0.0.1/iPhone"><error code="400" type="modify"><bad-request xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"></bad-request></error></iq>
我知道iq的格式一定是错的。但我真的不知道它应该是什么格式。任何人都可以搞清楚吗?