我现在正在使用ejabberd作为聊天服务器。 我正在写一个客户聊天并注册新用户。 现在，我认识的一些协议注册一个新帐号， 如发送下面的命令来注册新用户：如何了解更多XMPP/Jabber命令
<iq type="set"><query xmlns="jabber:iq:register"><username>wfwfewegwegwewefg</username><password>wfwefwefwefwef</password></query></iq>
我的问题是： 我想学习更多的命令/协议交谈服务器。 那么我可以在哪里学到更多？ 例如，如何向服务器询问用户名是否存在。 如何让服务器取消注册用户。
我应该搜索什么关键词？ 我应该寻找Jabber XMPP协议还是什么？
如果您从管理员帐户发送查询来执行这些操作，请参阅XEP-0133: Service Administration，该文档基于XEP-0050: Ad-hoc commands。
如果你指的是从普通用户的角度更多，以及您通常无法看到，如果一个用户帐户存在（这将敞开大门，欢迎垃圾邮件发送者使用它的目录收获），但你可以注销的如果你拥有它，请参阅XEP-0077: In-band Registration了解更多信息。
http://xmpp.org/extensions/还有很多标准扩展适用于各种各样的东西 - 有些正在开发中，有些正在定型和稳定。
如果您使用ejabberd，有命令行实用程序ejabberdctl将解决您的问题。
[email protected]:~$ sudo /opt/ejabberd-2.1.8/bin/ejabberdctl
Usage: ejabberdctl [--node nodename] [--auth user host password] command [options]
Available commands in this ejabberd node:
backup file Store the database to backup file
connected_users List all established sessions
connected_users_number Get the number of established sessions
delete_expired_messages Delete expired offline messages from database
delete_old_messages days Delete offline messages older than DAYS
dump file Dump the database to text file
dump_table file table Dump a table to text file
export_piefxis dir Export data of all users in the server to PIEFXIS
files (XEP-0227)
export_piefxis_host dir host Export data of users in a host to PIEFXIS files
(XEP-0227)
get_loglevel Get the current loglevel
help [--tags [tag] | com?*] Show help (try: ejabberdctl help help)
import_dir file Import users data from jabberd14 spool dir
import_file file Import user data from jabberd14 spool file
import_piefxis file Import users data from a PIEFXIS file (XEP-0227)
incoming_s2s_number Number of incoming s2s connections on the node
install_fallback file Install the database from a fallback file
load file Restore the database from text file
mnesia [info] show information of Mnesia system
mnesia_change_nodename oldnodename newnodename oldbackup newbackup Change the erlang node name in a backup file
outgoing_s2s_number Number of outgoing s2s connections on the node
register user host password Register a user
registered_users host List all registered users in HOST
rename_default_nodeplugin Update PubSub table from old ejabberd trunk SVN to
2.1.0
reopen_log Reopen the log files
restart Restart ejabberd
restore file Restore the database from backup file
set_master nodename Set master node of the clustered Mnesia tables
status Get ejabberd status
stop Stop ejabberd
stop_kindly delay announcement Inform users and rooms, wait, and stop the server
unregister user host Unregister a user
update module Update the given module, or use the keyword: all
update_list List modified modules that can be updated
user_resources user host List user's connected resources
Examples:
ejabberdctl restart
ejabberdctl --node [email protected] restart
Commands to start an ejabberd node:
start Start an ejabberd node in server mode
debug Attach an interactive Erlang shell to a running ejabberd node
live Start an ejabberd node in live (interactive) mode
我发现书"XMPP: The Definitive Guide"很有用，可以获得协议及其术语的概述。之后的XEP作为参考是很好的。