试图写一个IRC客户端，但很难找到一个关于代码和连接协议的好资源
本文关键字：一个 代码 于代码 连接 协议 资源 很难 IRC 客户端 | 更新日期: 2023-09-27 18:17:47
我已经看过RFC，但我仍然在挣扎。我已经用c#写了一个基本的客户端，但是我找不到如何正确连接的文档。
一旦我连接并传输NICK和USER信息，我需要加入一个通道。如果我立即执行JOIN，什么也不会发生——可能是因为执行得太快了。我不得不延迟它，但我不知道我需要等待哪个命令才能知道是否可以继续。
我得到这样的东西:
:irc.fish.net注意AUTH:正在查找主机名…
和
:irc.fish.net 001 FishBot:Welcome
以及代码为002,003,005,251,252等的东西，但我在网上找不到任何地方告诉我这些是什么。
所以我的两个基本问题是:你发送JOIN响应是为了什么，我在哪里可以找到上面的IRC代码对应的代码?RFC文档毫无用处!
RFC文档当然不是无用的!您是正确的，您需要先发送USER，然后再发送NICK。您正在获得的NOTICE是IRC服务器试图通过称为IDENTD的协议连接回您的PC。这是一个相对简单的协议，但它的目的是想知道连接到服务器的主机上的程序是否正在使用服务器拥有的本地/远程端口。
很可能，您的防火墙阻止了这一点(并且您可能没有运行IDENTD服务器)。这不是一个大问题，尽管一个成熟的IRC客户机将实现它。你可以在这里找到更多信息。这涉及到更多的细节。实现起来相对简单。
如果无法连接到您，大多数IRC服务器将放弃，我已经忘记了确切的副作用(它已经有一段时间了)，但是您要注意的下一个消息是MOTD_START/MOTD/MOTD_END和ERR_NOMOTD。只有在之后您已经收到了当天消息的结尾，或者处理了ERR_NOMOTD(没有一个)，您才能使用JOIN来加入通道。
^(?:[:@]([^''s]+) )?([^''s]+)(?: ((?:[^:''s][^''s]* ?)*))?(?: ?:(.*))?$
IRC rfc列出了所有可能的代码及其含义。我不明白你为什么认为它们没用。你引用了哪些?
编辑
我为了IRC查阅了我以前的c++代码，这样我就可以多帮点忙了。连接后，它进入一个阶段(我已经标记)协商:
谈判阶段:
- 如果已设置服务器密码，则发送
PASS mypassword。 - 发送
USER命令 - 进入昵称协商阶段
- 等待
ERR_NOMOTD,END_OFMOTD。直到其中一个到来，你还没有"正式连接"。
协商昵称阶段:
完全有可能在连接期间，您想要使用的昵称已被使用。因此客户端应该:
- 发出
NICK命令 - 如果您收到
ERR_NICKINUSE响应，请再次发出。如果您没有更多的昵称可以使用，您可以紧急救助或提示用户另一个。
其他需要考虑的事情:
- 查找
PING命令。服务器将在您空闲时发送此消息。将其作为高优先级处理，并返回带有服务器提供的数据的PONG。如果不这样做将确保您断开连接，并且当您在测试IRC客户端时，这可能是一种痛苦。
奖金有趣/strong>
这是我的IRC命令的枚举，你应该能够很容易地把它放在c#中:
// reply ids
enum Reply
{
RplNone = 0,
// Initial
RplWelcome = 001, // :Welcome to the Internet Relay Network <nickname>
RplYourHost = 002, // :Your host is <server>, running version <ver>
RplCreated = 003, // :This server was created <datetime>
RplMyInfo = 004, // <server> <ver> <usermode> <chanmode>
RplMap = 005, // :map
RplEndOfMap = 007, // :End of /MAP
RplMotdStart = 375, // :- server Message of the Day
RplMotd = 372, // :- <info>
RplMotdAlt = 377, // :- <info> (some)
RplMotdAlt2 = 378, // :- <info> (some)
RplMotdEnd = 376, // :End of /MOTD command.
RplUModeIs = 221, // <mode>
// IsOn/UserHost
RplUserHost = 302, // :userhosts
RplIsOn = 303, // :nicknames
// Away
RplAway = 301, // <nick> :away
RplUnAway = 305, // :You are no longer marked as being away
RplNowAway = 306, // :You have been marked as being away
// WHOIS/WHOWAS
RplWhoisHelper = 310, // <nick> :looks very helpful DALNET
RplWhoIsUser = 311, // <nick> <username> <address> * :<info>
RplWhoIsServer = 312, // <nick> <server> :<info>
RplWhoIsOperator = 313, // <nick> :is an IRC Operator
RplWhoIsIdle = 317, // <nick> <seconds> <signon> :<info>
RplEndOfWhois = 318, // <request> :End of /WHOIS list.
RplWhoIsChannels = 319, // <nick> :<channels>
RplWhoWasUser = 314, // <nick> <username> <address> * :<info>
RplEndOfWhoWas = 369, // <request> :End of WHOWAS
RplWhoReply = 352, // <channel> <username> <address> <server> <nick> <flags> :<hops> <info>
RplEndOfWho = 315, // <request> :End of /WHO list.
RplUserIPs = 307, // :userips UNDERNET
RplUserIP = 340, // <nick> :<nickname>=+<user>@<IP.address> UNDERNET
// List
RplListStart = 321, // Channel :Users Name
RplList = 322, // <channel> <users> :<topic>
RplListEnd = 323, // :End of /LIST
RplLinks = 364, // <server> <hub> :<hops> <info>
RplEndOfLinks = 365, // <mask> :End of /LINKS list.
// Post-Channel Join
RplUniqOpIs = 325,
RplChannelModeIs = 324, // <channel> <mode>
RplChannelUrl = 328, // <channel> :url DALNET
RplChannelCreated = 329, // <channel> <time>
RplNoTopic = 331, // <channel> :No topic is set.
RplTopic = 332, // <channel> :<topic>
RplTopicSetBy = 333, // <channel> <nickname> <time>
RplNamReply = 353, // = <channel> :<names>
RplEndOfNames = 366, // <channel> :End of /NAMES list.
// Invitational
RplInviting = 341, // <nick> <channel>
RplSummoning = 342,
// Channel Lists
RplInviteList = 346, // <channel> <invite> <nick> <time> IRCNET
RplEndOfInviteList = 357, // <channel> :End of Channel Invite List IRCNET
RplExceptList = 348, // <channel> <exception> <nick> <time> IRCNET
RplEndOfExceptList = 349, // <channel> :End of Channel Exception List IRCNET
RplBanList = 367, // <channel> <ban> <nick> <time>
RplEndOfBanList = 368, // <channel> :End of Channel Ban List
// server/misc
RplVersion = 351, // <version>.<debug> <server> :<info>
RplInfo = 371, // :<info>
RplEndOfInfo = 374, // :End of /INFO list.
RplYoureOper = 381, // :You are now an IRC Operator
RplRehashing = 382, // <file> :Rehashing
RplYoureService = 383,
RplTime = 391, // <server> :<time>
RplUsersStart = 392,
RplUsers = 393,
RplEndOfUsers = 394,
RplNoUsers = 395,
RplServList = 234,
RplServListEnd = 235,
RplAdminMe = 256, // :Administrative info about server
RplAdminLoc1 = 257, // :<info>
RplAdminLoc2 = 258, // :<info>
RplAdminEMail = 259, // :<info>
RplTryAgain = 263, // :Server load is temporarily too heavy. Please wait a while and try again.
// tracing
RplTraceLink = 200,
RplTraceConnecting = 201,
RplTraceHandshake = 202,
RplTraceUnknown = 203,
RplTraceOperator = 204,
RplTraceUser = 205,
RplTraceServer = 206,
RplTraceService = 207,
RplTraceNewType = 208,
RplTraceClass = 209,
RplTraceReconnect = 210,
RplTraceLog = 261,
RplTraceEnd = 262,
// stats
RplStatsLinkInfo = 211, // <connection> <sendq> <sentmsg> <sentbyte> <recdmsg> <recdbyte> :<open>
RplStatsCommands = 212, // <command> <uses> <bytes>
RplStatsCLine = 213, // C <address> * <server> <port> <class>
RplStatsNLine = 214, // N <address> * <server> <port> <class>
RplStatsILine = 215, // I <ipmask> * <hostmask> <port> <class>
RplStatsKLine = 216, // k <address> * <username> <details>
RplStatsPLine = 217, // P <port> <??> <??>
RplStatsQLine = 222, // <mask> :<comment>
RplStatsELine = 223, // E <hostmask> * <username> <??> <??>
RplStatsDLine = 224, // D <ipmask> * <username> <??> <??>
RplStatsLLine = 241, // L <address> * <server> <??> <??>
RplStatsuLine = 242, // :Server Up <num> days, <time>
RplStatsoLine = 243, // o <mask> <password> <user> <??> <class>
RplStatsHLine = 244, // H <address> * <server> <??> <??>
RplStatsGLine = 247, // G <address> <timestamp> :<reason>
RplStatsULine = 248, // U <host> * <??> <??> <??>
RplStatsZLine = 249, // :info
RplStatsYLine = 218, // Y <class> <ping> <freq> <maxconnect> <sendq>
RplEndOfStats = 219, // <char> :End of /STATS report
RplStatsUptime = 242,
// GLINE
RplGLineList = 280, // <address> <timestamp> <reason> UNDERNET
RplEndOfGLineList = 281, // :End of G-line List UNDERNET
// Silence
RplSilenceList = 271, // <nick> <mask> UNDERNET/DALNET
RplEndOfSilenceList = 272, // <nick> :End of Silence List UNDERNET/DALNET
// LUser
RplLUserClient = 251, // :There are <user> users and <invis> invisible on <serv> servers
RplLUserOp = 252, // <num> :operator(s) online
RplLUserUnknown = 253, // <num> :unknown connection(s)
RplLUserChannels = 254, // <num> :channels formed
RplLUserMe = 255, // :I have <user> clients and <serv> servers
RplLUserLocalUser = 265, // :Current local users: <curr> Max: <max>
RplLUserGlobalUser = 266, // :Current global users: <curr> Max: <max>
// Errors
ErrNoSuchNick = 401, // <nickname> :No such nick
ErrNoSuchServer = 402, // <server> :No such server
ErrNoSuchChannel = 403, // <channel> :No such channel
ErrCannotSendToChan = 404, // <channel> :Cannot send to channel
ErrTooManyChannels = 405, // <channel> :You have joined too many channels
ErrWasNoSuchNick = 406, // <nickname> :There was no such nickname
ErrTooManyTargets = 407, // <target> :Duplicate recipients. No message delivered
ErrNoColors = 408, // <nickname> #<channel> :You cannot use colors on this channel. Not sent: <text> DALNET
ErrNoOrigin = 409, // :No origin specified
ErrNoRecipient = 411, // :No recipient given (<command>)
ErrNoTextToSend = 412, // :No text to send
ErrNoTopLevel = 413, // <mask> :No toplevel domain specified
ErrWildTopLevel = 414, // <mask> :Wildcard in toplevel Domain
ErrBadMask = 415,
ErrTooMuchInfo = 416, // <command> :Too many lines in the output, restrict your query UNDERNET
ErrUnknownCommand = 421, // <command> :Unknown command
ErrNoMotd = 422, // :MOTD File is missing
ErrNoAdminInfo = 423, // <server> :No administrative info available
ErrFileError = 424,
ErrNoNicknameGiven = 431, // :No nickname given
ErrErroneusNickname = 432, // <nickname> :Erroneus Nickname
ErrNickNameInUse = 433, // <nickname> :Nickname is already in use.
ErrNickCollision = 436, // <nickname> :Nickname collision KILL
ErrUnAvailResource = 437, // <channel> :Cannot change nickname while banned on channel
ErrNickTooFast = 438, // <nick> :Nick change too fast. Please wait <sec> seconds. (most)
ErrTargetTooFast = 439, // <target> :Target change too fast. Please wait <sec> seconds. DALNET/UNDERNET
ErrUserNotInChannel = 441, // <nickname> <channel> :They aren't on that channel
ErrNotOnChannel = 442, // <channel> :You're not on that channel
ErrUserOnChannel = 443, // <nickname> <channel> :is already on channel
ErrNoLogin = 444,
ErrSummonDisabled = 445, // :SUMMON has been disabled
ErrUsersDisabled = 446, // :USERS has been disabled
ErrNotRegistered = 451, // <command> :Register first.
ErrNeedMoreParams = 461, // <command> :Not enough parameters
ErrAlreadyRegistered= 462, // :You may not reregister
ErrNoPermForHost = 463,
ErrPasswdMistmatch = 464,
ErrYoureBannedCreep = 465,
ErrYouWillBeBanned = 466,
ErrKeySet = 467, // <channel> :Channel key already set
ErrServerCanChange = 468, // <channel> :Only servers can change that mode DALNET
ErrChannelIsFull = 471, // <channel> :Cannot join channel (+l)
ErrUnknownMode = 472, // <char> :is unknown mode char to me
ErrInviteOnlyChan = 473, // <channel> :Cannot join channel (+i)
ErrBannedFromChan = 474, // <channel> :Cannot join channel (+b)
ErrBadChannelKey = 475, // <channel> :Cannot join channel (+k)
ErrBadChanMask = 476,
ErrNickNotRegistered= 477, // <channel> :You need a registered nick to join that channel. DALNET
ErrBanListFull = 478, // <channel> <ban> :Channel ban/ignore list is full
ErrNoPrivileges = 481, // :Permission Denied- You're not an IRC operator
ErrChanOPrivsNeeded = 482, // <channel> :You're not channel operator
ErrCantKillServer = 483, // :You cant kill a server!
ErrRestricted = 484, // <nick> <channel> :Cannot kill, kick or deop channel service UNDERNET
ErrUniqOPrivsNeeded = 485, // <channel> :Cannot join channel (reason)
ErrNoOperHost = 491, // :No O-lines for your host
ErrUModeUnknownFlag = 501, // :Unknown MODE flag
ErrUsersDontMatch = 502, // :Cant change mode for other users
ErrSilenceListFull = 511 // <mask> :Your silence list is full UNDERNET/DALNET
}; // eo enum Reply
也许你看的是旧版本(RFC 1459)而不是当前版本(RFC 2812)的标准?
后者列出了第5节中的数字代码" responses ":
001 RPL_WELCOME
"Welcome to the Internet Relay Network
<nick>!<user>@<host>"
002 RPL_YOURHOST
"Your host is <servername>, running version <ver>"
003 RPL_CREATED
"This server was created <date>"
...
代码可以在本文档中找到，您指定的代码是:
- 002 RPL_YOURHOST "您的主机正在运行版本"
- 003 RPL_CREATED "此服务器已创建"
- 005 RPL_BOUNCE "Try server, port "
- 251 RPL_LUSERCLIENT ":服务器上有用户和服务"
- 252 RPL_LUSEROP ":operator online"