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                                        Introduction 
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                                        IRC Commands 
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                                        ACCESS 
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                                        ADMIN 
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                                        AUTH 
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                                        AWAY 
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                                        BATCH 
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                                        CAP 
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                                        CAPTCHA 
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                                        CHATHISTORY 
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                                        CHGPASS 
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                                        CONNECT 
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                                        CONTACT 
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                                        CREATE 
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                                        DATA 
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                                        DEVICE 
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                                        DIE 
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                                        EVENT 
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                                        INFO 
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                                        INVITE 
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                                        IRCX 
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                                        ISIRCX 
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                                        ISON 
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                                        JOIN 
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                                        KICK 
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                                        KILL 
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                                        LINKS 
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                                        LIST 
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                                        LISTX 
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                                        LUSERS 
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                                        MEMO 
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                                        MODE 
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                                        MOTD 
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                                        NAMES 
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                                        NICK 
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                                        NOTICE 
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                                        OBJECT 
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                                        OPER 
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                                        PART 
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                                        PASS 
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                                        PING 
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                                        PONG 
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                                        PRIVMSG 
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                                        PROP 
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                                        QUIT 
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                                        REGISTER 
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                                        REHASH 
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                                        REPLY 
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                                        REQUEST 
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                                        RESET 
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                                        SAJOIN 
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                                        SAMODE 
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                                        SANICK 
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                                        SAPART 
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                                        SILENCE 
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                                        SQUIT 
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                                        STATS 
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                                        STOP 
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                                        TAGMSG 
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                                        TIME 
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                                        TOPIC 
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                                        TRANSCRIPT 
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                                        UMODE2 
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                                        UNREGISTER 
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                                        USER 
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                                        USERHOST 
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                                        USERS 
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                                        VERIFY 
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                                        VERSION 
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                                        WALLOPS 
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                                        WATCH 
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                                        WHISPER 
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                                        WHO 
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                                        WHOIS 
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                                        WHOWAS 
PING
The PING command is used to test the presence of an active client or server connection.
Ping Request
Usage: PING <server1> [<server2>]<server1> The server to be pinged.
<server2> An optional second server, used when pinging between two servers.
The server receiving a PING command must respond with a PONG command, using the same server arguments. This is used to verify that the connection is still active and responsive.
(See section 4.6.2 of RFC 1459, 3.7.2 of RFC 2812)
