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net/server_event.lua @ 8528:67311cda0625
net.server_select: Better detection of errors for outgoing connections
On connection failure, a socket is marked readable and writable. So
to detect initial connection failures (connection refused, etc.) we
now watch for sockets becoming readable during initial connection,
and also read from readable sockets before writing to writable
sockets.
This should fix 'onconnect' being called for outgoing connections
that actually failed.
author | Matthew Wild <mwild1@gmail.com> |
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date | Fri, 23 Feb 2018 15:30:00 +0000 |
parent | 8384:4a5c6f6214ee |
child | 8529:257fd322fc9f |
rev | line source |
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1 --[[ |
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2 |
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3 |
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4 server.lua based on lua/libevent by blastbeat |
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5 |
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6 notes: |
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7 -- when using luaevent, never register 2 or more EV_READ at one socket, same for EV_WRITE |
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8 -- you cant even register a new EV_READ/EV_WRITE callback inside another one |
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9 -- to do some of the above, use timeout events or something what will called from outside |
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10 -- dont let garbagecollect eventcallbacks, as long they are running |
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11 -- when using luasec, there are 4 cases of timeout errors: wantread or wantwrite during reading or writing |
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13 --]] |
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14 -- luacheck: ignore 212/self 431/err 211/ret |
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15 |
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16 local SCRIPT_NAME = "server_event.lua" |
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17 local SCRIPT_VERSION = "0.05" |
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18 local SCRIPT_AUTHOR = "blastbeat" |
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19 local LAST_MODIFIED = "2009/11/20" |
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20 |
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21 local cfg = { |
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22 MAX_CONNECTIONS = 100000, -- max per server connections (use "ulimit -n" on *nix) |
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23 MAX_HANDSHAKE_ATTEMPTS= 1000, -- attempts to finish ssl handshake |
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24 HANDSHAKE_TIMEOUT = 60, -- timeout in seconds per handshake attempt |
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25 MAX_READ_LENGTH = 1024 * 1024 * 1024 * 1024, -- max bytes allowed to read from sockets |
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26 MAX_SEND_LENGTH = 1024 * 1024 * 1024 * 1024, -- max bytes size of write buffer (for writing on sockets) |
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27 ACCEPT_QUEUE = 128, -- might influence the length of the pending sockets queue |
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28 ACCEPT_DELAY = 10, -- seconds to wait until the next attempt of a full server to accept |
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29 READ_TIMEOUT = 60 * 60 * 6, -- timeout in seconds for read data from socket |
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30 WRITE_TIMEOUT = 180, -- timeout in seconds for write data on socket |
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31 CONNECT_TIMEOUT = 20, -- timeout in seconds for connection attempts |
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32 CLEAR_DELAY = 5, -- seconds to wait for clearing interface list (and calling ondisconnect listeners) |
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33 READ_RETRY_DELAY = 1e-06, -- if, after reading, there is still data in buffer, wait this long and continue reading |
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34 DEBUG = true, -- show debug messages |
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35 } |
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36 |
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37 local pairs = pairs |
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38 local select = select |
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39 local require = require |
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40 local tostring = tostring |
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41 local setmetatable = setmetatable |
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42 |
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43 local t_insert = table.insert |
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44 local t_concat = table.concat |
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45 local s_sub = string.sub |
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47 local coroutine_wrap = coroutine.wrap |
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48 local coroutine_yield = coroutine.yield |
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49 |
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50 local has_luasec, ssl = pcall ( require , "ssl" ) |
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51 local socket = require "socket" |
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52 local levent = require "luaevent.core" |
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53 |
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54 local socket_gettime = socket.gettime |
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55 local getaddrinfo = socket.dns.getaddrinfo |
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56 |
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57 local log = require ("util.logger").init("socket") |
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58 |
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59 local function debug(...) |
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60 return log("debug", ("%s "):rep(select('#', ...)), ...) |
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61 end |
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62 -- local vdebug = debug; |
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63 |
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64 local bitor = ( function( ) -- thx Rici Lake |
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65 local hasbit = function( x, p ) |
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66 return x % ( p + p ) >= p |
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67 end |
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68 return function( x, y ) |
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69 local p = 1 |
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70 local z = 0 |
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71 local limit = x > y and x or y |
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72 while p <= limit do |
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73 if hasbit( x, p ) or hasbit( y, p ) then |
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74 z = z + p |
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75 end |
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76 p = p + p |
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77 end |
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78 return z |
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79 end |
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80 end )( ) |
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81 |
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82 local base = levent.new( ) |
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83 local addevent = base.addevent |
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84 local EV_READ = levent.EV_READ |
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85 local EV_WRITE = levent.EV_WRITE |
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86 local EV_TIMEOUT = levent.EV_TIMEOUT |
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87 local EV_SIGNAL = levent.EV_SIGNAL |
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88 |
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89 local EV_READWRITE = bitor( EV_READ, EV_WRITE ) |
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90 |
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91 local interfacelist = { } |
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92 |
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93 -- Client interface methods |
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94 local interface_mt = {}; interface_mt.__index = interface_mt; |
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95 |
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96 -- Private methods |
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97 function interface_mt:_close() |
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98 return self:_destroy(); |
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99 end |
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100 |
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101 function interface_mt:_start_connection(plainssl) -- called from wrapclient |
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102 local callback = function( event ) |
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103 if EV_TIMEOUT == event then -- timeout during connection |
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104 self.fatalerror = "connection timeout" |
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105 self:ontimeout() -- call timeout listener |
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106 self:_close() |
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107 debug( "new connection failed. id:", self.id, "error:", self.fatalerror ) |
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108 else |
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109 if plainssl and has_luasec then -- start ssl session |
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110 self:starttls(self._sslctx, true) |
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111 else -- normal connection |
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112 self:_start_session(true) |
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113 end |
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114 debug( "new connection established. id:", self.id ) |
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115 end |
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116 self.eventconnect = nil |
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117 return -1 |
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118 end |
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119 self.eventconnect = addevent( base, self.conn, EV_WRITE, callback, cfg.CONNECT_TIMEOUT ) |
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120 return true |
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121 end |
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122 function interface_mt:_start_session(call_onconnect) -- new session, for example after startssl |
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123 if self.type == "client" then |
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124 local callback = function( ) |
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125 self:_lock( false, false, false ) |
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126 --vdebug( "start listening on client socket with id:", self.id ) |
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127 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback |
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128 if call_onconnect then |
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129 self:onconnect() |
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130 end |
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131 self.eventsession = nil |
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132 return -1 |
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133 end |
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134 self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 ) |
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135 else |
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136 self:_lock( false ) |
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137 --vdebug( "start listening on server socket with id:", self.id ) |
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138 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback ) -- register callback |
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139 end |
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140 return true |
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141 end |
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142 function interface_mt:_start_ssl(call_onconnect) -- old socket will be destroyed, therefore we have to close read/write events first |
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143 --vdebug( "starting ssl session with client id:", self.id ) |
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144 local _ |
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145 _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks! |
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146 _ = self.eventwrite and self.eventwrite:close( ) |
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147 self.eventread, self.eventwrite = nil, nil |
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148 local err |
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149 self.conn, err = ssl.wrap( self.conn, self._sslctx ) |
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150 if err then |
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151 self.fatalerror = err |
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152 self.conn = nil -- cannot be used anymore |
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153 if call_onconnect then |
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154 self.ondisconnect = nil -- dont call this when client isnt really connected |
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155 end |
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156 self:_close() |
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157 debug( "fatal error while ssl wrapping:", err ) |
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158 return false |
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159 end |
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160 self.conn:settimeout( 0 ) -- set non blocking |
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161 local handshakecallback = coroutine_wrap(function( event ) |
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162 local _, err |
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163 local attempt = 0 |
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164 local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPTS |
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165 while attempt < maxattempt do -- no endless loop |
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166 attempt = attempt + 1 |
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167 debug( "ssl handshake of client with id:"..tostring(self)..", attempt:"..attempt ) |
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168 if attempt > maxattempt then |
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169 self.fatalerror = "max handshake attempts exceeded" |
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170 elseif EV_TIMEOUT == event then |
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171 self.fatalerror = "timeout during handshake" |
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172 else |
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173 _, err = self.conn:dohandshake( ) |
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174 if not err then |
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175 self:_lock( false, false, false ) -- unlock the interface; sending, closing etc allowed |
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176 self.send = self.conn.send -- caching table lookups with new client object |
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177 self.receive = self.conn.receive |
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178 if not call_onconnect then -- trigger listener |
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179 self:onstatus("ssl-handshake-complete"); |
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180 end |
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181 self:_start_session( call_onconnect ) |
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182 debug( "ssl handshake done" ) |
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183 self.eventhandshake = nil |
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184 return -1 |
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185 end |
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186 if err == "wantwrite" then |
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187 event = EV_WRITE |
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188 elseif err == "wantread" then |
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189 event = EV_READ |
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190 else |
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191 debug( "ssl handshake error:", err ) |
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192 self.fatalerror = err |
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193 end |
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194 end |
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195 if self.fatalerror then |
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196 if call_onconnect then |
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197 self.ondisconnect = nil -- dont call this when client isnt really connected |
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198 end |
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199 self:_close() |
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200 debug( "handshake failed because:", self.fatalerror ) |
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201 self.eventhandshake = nil |
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202 return -1 |
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203 end |
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204 event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT ) -- yield this monster... |
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205 end |
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206 end |
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207 ) |
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208 debug "starting handshake..." |
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209 self:_lock( false, true, true ) -- unlock read/write events, but keep interface locked |
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210 self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT ) |
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211 return true |
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212 end |
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213 function interface_mt:_destroy() -- close this interface + events and call last listener |
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214 debug( "closing client with id:", self.id, self.fatalerror ) |
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215 self:_lock( true, true, true ) -- first of all, lock the interface to avoid further actions |
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216 local _ |
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217 _ = self.eventread and self.eventread:close( ) |
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218 if self.type == "client" then |
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219 _ = self.eventwrite and self.eventwrite:close( ) |
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220 _ = self.eventhandshake and self.eventhandshake:close( ) |
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221 _ = self.eventstarthandshake and self.eventstarthandshake:close( ) |
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222 _ = self.eventconnect and self.eventconnect:close( ) |
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223 _ = self.eventsession and self.eventsession:close( ) |
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224 _ = self.eventwritetimeout and self.eventwritetimeout:close( ) |
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225 _ = self.eventreadtimeout and self.eventreadtimeout:close( ) |
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226 -- call ondisconnect listener (wont be the case if handshake failed on connect) |
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227 _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) |
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228 _ = self.conn and self.conn:close( ) -- close connection |
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229 _ = self._server and self._server:counter(-1); |
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230 self.eventread, self.eventwrite = nil, nil |
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231 self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil |
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232 self.readcallback, self.writecallback = nil, nil |
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233 else |
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234 self.conn:close( ) |
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235 self.eventread, self.eventclose = nil, nil |
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236 self.interface, self.readcallback = nil, nil |
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237 end |
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238 interfacelist[ self ] = nil |
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239 return true |
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240 end |
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241 |
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242 function interface_mt:_lock(nointerface, noreading, nowriting) -- lock or unlock this interface or events |
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243 self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting |
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244 return nointerface, noreading, nowriting |
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245 end |
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246 |
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247 --TODO: Deprecate |
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248 function interface_mt:lock_read(switch) |
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249 if switch then |
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250 return self:pause(); |
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251 else |
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252 return self:resume(); |
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253 end |
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254 end |
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255 |
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256 function interface_mt:pause() |
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257 return self:_lock(self.nointerface, true, self.nowriting); |
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258 end |
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259 |
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260 function interface_mt:resume() |
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261 self:_lock(self.nointerface, false, self.nowriting); |
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262 if self.readcallback and not self.eventread then |
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263 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback |
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264 return true; |
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265 end |
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266 end |
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267 |
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268 function interface_mt:counter(c) |
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269 if c then |
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270 self._connections = self._connections + c |
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271 end |
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272 return self._connections |
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273 end |
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274 |
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275 -- Public methods |
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276 function interface_mt:write(data) |
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277 if self.nowriting then return nil, "locked" end |
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278 --vdebug( "try to send data to client, id/data:", self.id, data ) |
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279 data = tostring( data ) |
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280 local len = #data |
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281 local total = len + self.writebufferlen |
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282 if total > cfg.MAX_SEND_LENGTH then -- check buffer length |
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283 local err = "send buffer exceeded" |
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284 debug( "error:", err ) -- to much, check your app |
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285 return nil, err |
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286 end |
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287 t_insert(self.writebuffer, data) -- new buffer |
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288 self.writebufferlen = total |
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289 if not self.eventwrite then -- register new write event |
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290 --vdebug( "register new write event" ) |
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291 self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT ) |
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292 end |
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293 return true |
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294 end |
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295 function interface_mt:close() |
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296 if self.nointerface then return nil, "locked"; end |
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297 debug( "try to close client connection with id:", self.id ) |
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298 if self.type == "client" then |
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299 self.fatalerror = "client to close" |
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300 if self.eventwrite then -- wait for incomplete write request |
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301 self:_lock( true, true, false ) |
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302 debug "closing delayed until writebuffer is empty" |
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303 return nil, "writebuffer not empty, waiting" |
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304 else -- close now |
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305 self:_lock( true, true, true ) |
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306 self:_close() |
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307 return true |
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308 end |
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309 else |
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310 debug( "try to close server with id:", tostring(self.id)) |
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311 self.fatalerror = "server to close" |
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312 self:_lock( true ) |
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313 self:_close( 0 ) |
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314 return true |
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315 end |
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316 end |
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318 function interface_mt:socket() |
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319 return self.conn |
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320 end |
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321 |
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322 function interface_mt:server() |
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323 return self._server or self; |
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324 end |
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326 function interface_mt:port() |
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327 return self._port |
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328 end |
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330 function interface_mt:serverport() |
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331 return self._serverport |
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332 end |
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333 |
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334 function interface_mt:ip() |
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335 return self._ip |
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336 end |
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337 |
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338 function interface_mt:ssl() |
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339 return self._usingssl |
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340 end |
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341 interface_mt.clientport = interface_mt.port -- COMPAT server_select |
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343 function interface_mt:type() |
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344 return self._type or "client" |
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345 end |
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347 function interface_mt:connections() |
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348 return self._connections |
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349 end |
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351 function interface_mt:address() |
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352 return self.addr |
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353 end |
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354 |
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355 function interface_mt:set_sslctx(sslctx) |
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356 self._sslctx = sslctx; |
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357 if sslctx then |
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358 self.starttls = nil; -- use starttls() of interface_mt |
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359 else |
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360 self.starttls = false; -- prevent starttls() |
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361 end |
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362 end |
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363 |
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364 function interface_mt:set_mode(pattern) |
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365 if pattern then |
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366 self._pattern = pattern; |
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367 end |
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368 return self._pattern; |
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369 end |
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371 function interface_mt:set_send(new_send) -- luacheck: ignore 212 | |
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372 -- No-op, we always use the underlying connection's send |
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373 end |
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374 |
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375 function interface_mt:starttls(sslctx, call_onconnect) |
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376 debug( "try to start ssl at client id:", self.id ) |
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377 local err |
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378 self._sslctx = sslctx; |
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379 if self._usingssl then -- startssl was already called |
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380 err = "ssl already active" |
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381 end |
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382 if err then |
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383 debug( "error:", err ) |
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384 return nil, err |
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385 end |
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386 self._usingssl = true |
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387 self.startsslcallback = function( ) -- we have to start the handshake outside of a read/write event |
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388 self.startsslcallback = nil |
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389 self:_start_ssl(call_onconnect); |
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390 self.eventstarthandshake = nil |
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391 return -1 |
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392 end |
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393 if not self.eventwrite then |
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394 self:_lock( true, true, true ) -- lock the interface, to not disturb the handshake |
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395 self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 ) -- add event to start handshake |
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396 else |
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397 -- wait until writebuffer is empty |
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398 self:_lock( true, true, false ) |
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399 debug "ssl session delayed until writebuffer is empty..." |
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400 end |
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401 self.starttls = false; |
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402 return true |
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403 end |
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404 |
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405 function interface_mt:setoption(option, value) |
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406 if self.conn.setoption then |
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407 return self.conn:setoption(option, value); |
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408 end |
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409 return false, "setoption not implemented"; |
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410 end |
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411 |
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412 function interface_mt:setlistener(listener) |
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413 self:ondetach(); -- Notify listener that it is no longer responsible for this connection |
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414 self.onconnect = listener.onconnect; |
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415 self.ondisconnect = listener.ondisconnect; |
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416 self.onincoming = listener.onincoming; |
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417 self.ontimeout = listener.ontimeout; |
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418 self.onreadtimeout = listener.onreadtimeout; |
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419 self.onstatus = listener.onstatus; |
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420 self.ondetach = listener.ondetach; |
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421 self.ondrain = listener.ondrain; |
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422 end |
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423 |
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424 -- Stub handlers |
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425 function interface_mt:onconnect() |
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426 end |
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427 function interface_mt:onincoming() |
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428 end |
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429 function interface_mt:ondisconnect() |
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430 end |
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431 function interface_mt:ontimeout() |
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432 end |
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433 function interface_mt:onreadtimeout() |
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434 self.fatalerror = "timeout during receiving" |
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435 debug( "connection failed:", self.fatalerror ) |
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436 self:_close() |
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437 self.eventread = nil |
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438 end |
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439 function interface_mt:ondrain() |
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440 end |
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441 function interface_mt:ondetach() |
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442 end |
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443 function interface_mt:onstatus() |
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444 end |
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445 |
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446 -- End of client interface methods |
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447 |
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448 local function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface |
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449 --vdebug("creating client interfacce...") |
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450 local interface = { |
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451 type = "client"; |
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452 conn = client; |
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453 currenttime = socket_gettime( ); -- safe the origin |
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454 writebuffer = {}; -- writebuffer |
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455 writebufferlen = 0; -- length of writebuffer |
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456 send = client.send; -- caching table lookups |
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457 receive = client.receive; |
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458 onconnect = listener.onconnect; -- will be called when client disconnects |
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459 ondisconnect = listener.ondisconnect; -- will be called when client disconnects |
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460 onincoming = listener.onincoming; -- will be called when client sends data |
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461 ontimeout = listener.ontimeout; -- called when fatal socket timeout occurs |
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462 onreadtimeout = listener.onreadtimeout; -- called when socket inactivity timeout occurs |
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463 ondrain = listener.ondrain; -- called when writebuffer is empty |
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464 ondetach = listener.ondetach; -- called when disassociating this listener from this connection |
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465 onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS) |
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466 eventread = false, eventwrite = false, eventclose = false, |
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467 eventhandshake = false, eventstarthandshake = false; -- event handler |
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468 eventconnect = false, eventsession = false; -- more event handler... |
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469 eventwritetimeout = false; -- even more event handler... |
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470 eventreadtimeout = false; |
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471 fatalerror = false; -- error message |
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472 writecallback = false; -- will be called on write events |
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473 readcallback = false; -- will be called on read events |
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474 nointerface = true; -- lock/unlock parameter of this interface |
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475 noreading = false, nowriting = false; -- locks of the read/writecallback |
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476 startsslcallback = false; -- starting handshake callback |
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477 position = false; -- position of client in interfacelist |
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478 |
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479 -- Properties |
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480 _ip = ip, _port = port, _server = server, _pattern = pattern, |
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481 _serverport = (server and server:port() or nil), |
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482 _sslctx = sslctx; -- parameters |
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483 _usingssl = false; -- client is using ssl; |
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484 } |
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485 if not has_luasec then interface.starttls = false; end |
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486 interface.id = tostring(interface):match("%x+$"); |
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487 interface.writecallback = function( event ) -- called on write events |
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488 --vdebug( "new client write event, id/ip/port:", interface, ip, port ) |
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489 if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then -- leave this event |
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490 --vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror ) |
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491 interface.eventwrite = false |
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492 return -1 |
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493 end |
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494 if EV_TIMEOUT == event then -- took too long to write some data to socket -> disconnect |
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495 interface.fatalerror = "timeout during writing" |
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496 debug( "writing failed:", interface.fatalerror ) |
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497 interface:_close() |
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498 interface.eventwrite = false |
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499 return -1 |
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500 else -- can write :) |
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501 if interface._usingssl then -- handle luasec |
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502 if interface.eventreadtimeout then -- we have to read first |
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503 local ret = interface.readcallback( ) -- call readcallback |
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504 --vdebug( "tried to read in writecallback, result:", ret ) |
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505 end |
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506 if interface.eventwritetimeout then -- luasec only |
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507 interface.eventwritetimeout:close( ) -- first we have to close timeout event which where regged after a wantread error |
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508 interface.eventwritetimeout = false |
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509 end |
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510 end |
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511 interface.writebuffer = { t_concat(interface.writebuffer) } |
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512 local succ, err, byte = interface.conn:send( interface.writebuffer[1], 1, interface.writebufferlen ) |
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513 --vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte ) |
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514 if succ then -- writing succesful |
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515 interface.writebuffer[1] = nil |
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516 interface.writebufferlen = 0 |
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517 interface:ondrain(); |
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518 if interface.fatalerror then |
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519 debug "closing client after writing" |
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520 interface:_close() -- close interface if needed |
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521 elseif interface.startsslcallback then -- start ssl connection if needed |
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522 debug "starting ssl handshake after writing" |
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523 interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 ) |
7399 | 524 elseif interface.writebufferlen ~= 0 then |
7394 | 525 -- data possibly written from ondrain |
526 return EV_WRITE, cfg.WRITE_TIMEOUT | |
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527 elseif interface.eventreadtimeout then |
7385 | 528 return EV_WRITE, cfg.WRITE_TIMEOUT |
529 end | |
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530 interface.eventwrite = nil |
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531 return -1 |
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532 elseif byte and (err == "timeout" or err == "wantwrite") then -- want write again |
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533 --vdebug( "writebuffer is not empty:", err ) |
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534 interface.writebuffer[1] = s_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer |
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535 interface.writebufferlen = interface.writebufferlen - byte |
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536 if "wantread" == err then -- happens only with luasec |
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537 local callback = function( ) |
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538 interface:_close() |
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539 interface.eventwritetimeout = nil |
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540 return -1; |
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541 end |
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542 interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT ) -- reg a new timeout event |
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543 debug( "wantread during write attempt, reg it in readcallback but dont know what really happens next..." ) |
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544 -- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent |
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545 return -1 |
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546 end |
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547 return EV_WRITE, cfg.WRITE_TIMEOUT |
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548 else -- connection was closed during writing or fatal error |
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549 interface.fatalerror = err or "fatal error" |
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550 debug( "connection failed in write event:", interface.fatalerror ) |
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551 interface:_close() |
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552 interface.eventwrite = nil |
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553 return -1 |
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554 end |
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555 end |
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556 end |
7224 | 557 |
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558 interface.readcallback = function( event ) -- called on read events |
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559 --vdebug( "new client read event, id/ip/port:", tostring(interface.id), tostring(ip), tostring(port) ) |
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560 if interface.noreading or interface.fatalerror then -- leave this event |
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561 --vdebug( "leaving this event because:", tostring(interface.noreading or interface.fatalerror) ) |
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562 interface.eventread = nil |
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563 return -1 |
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564 end |
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565 if EV_TIMEOUT == event and not interface.conn:dirty() and interface:onreadtimeout() ~= true then |
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566 interface.fatalerror = "timeout during receiving" |
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567 debug( "connection failed:", interface.fatalerror ) |
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568 interface:_close() |
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569 interface.eventread = nil |
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570 return -1 -- took too long to get some data from client -> disconnect |
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571 end |
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572 if interface._usingssl then -- handle luasec |
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573 if interface.eventwritetimeout then -- ok, in the past writecallback was regged |
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574 local ret = interface.writecallback( ) -- call it |
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575 --vdebug( "tried to write in readcallback, result:", tostring(ret) ) |
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576 end |
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577 if interface.eventreadtimeout then |
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578 interface.eventreadtimeout:close( ) |
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579 interface.eventreadtimeout = nil |
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580 end |
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581 end |
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582 local buffer, err, part = interface.conn:receive( interface._pattern ) -- receive buffer with "pattern" |
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583 --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) ) |
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584 buffer = buffer or part |
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585 if buffer and #buffer > cfg.MAX_READ_LENGTH then -- check buffer length |
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586 interface.fatalerror = "receive buffer exceeded" |
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587 debug( "fatal error:", interface.fatalerror ) |
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588 interface:_close() |
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589 interface.eventread = nil |
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590 return -1 |
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591 end |
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592 if err and ( err ~= "timeout" and err ~= "wantread" ) then |
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593 if "wantwrite" == err then -- need to read on write event |
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594 if not interface.eventwrite then -- register new write event if needed |
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595 interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT ) |
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596 end |
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597 interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT, |
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598 function( ) interface:_close() end, cfg.READ_TIMEOUT) |
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599 debug( "wantwrite during read attempt, reg it in writecallback but dont know what really happens next..." ) |
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600 -- to be honest i dont know what happens next, if it is allowed to first read, the write etc... |
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601 else -- connection was closed or fatal error |
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602 interface.fatalerror = err |
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603 debug( "connection failed in read event:", interface.fatalerror ) |
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604 interface:_close() |
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605 interface.eventread = nil |
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606 return -1 |
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607 end |
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608 else |
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609 interface.onincoming( interface, buffer, err ) -- send new data to listener |
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610 end |
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611 if interface.noreading then |
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612 interface.eventread = nil; |
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613 return -1; |
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614 end |
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615 if interface.conn:dirty() then -- still data left in buffer |
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616 return EV_TIMEOUT, cfg.READ_RETRY_DELAY; |
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617 end |
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618 return EV_READ, cfg.READ_TIMEOUT |
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619 end |
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620 |
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621 client:settimeout( 0 ) -- set non blocking |
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622 setmetatable(interface, interface_mt) |
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623 interfacelist[ interface ] = true -- add to interfacelist |
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624 return interface |
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625 end |
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626 |
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627 local function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface |
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628 debug "creating server interface..." |
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629 local interface = { |
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630 _connections = 0; |
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631 |
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632 type = "server"; |
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633 conn = server; |
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634 onconnect = listener.onconnect; -- will be called when new client connected |
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635 eventread = false; -- read event handler |
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636 eventclose = false; -- close event handler |
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637 readcallback = false; -- read event callback |
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638 fatalerror = false; -- error message |
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639 nointerface = true; -- lock/unlock parameter |
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640 |
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641 _ip = addr, _port = port, _pattern = pattern, |
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642 _sslctx = sslctx; |
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643 } |
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644 interface.id = tostring(interface):match("%x+$"); |
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645 interface.readcallback = function( event ) -- server handler, called on incoming connections |
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646 --vdebug( "server can accept, id/addr/port:", interface, addr, port ) |
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647 if interface.fatalerror then |
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648 --vdebug( "leaving this event because:", self.fatalerror ) |
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649 interface.eventread = nil |
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650 return -1 |
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651 end |
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652 local delay = cfg.ACCEPT_DELAY |
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653 if EV_TIMEOUT == event then |
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654 if interface._connections >= cfg.MAX_CONNECTIONS then -- check connection count |
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655 debug( "to many connections, seconds to wait for next accept:", delay ) |
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656 return EV_TIMEOUT, delay -- timeout... |
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657 else |
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658 return EV_READ -- accept again |
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659 end |
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660 end |
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661 --vdebug("max connection check ok, accepting...") |
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662 local client, err = server:accept() -- try to accept; TODO: check err |
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663 while client do |
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664 if interface._connections >= cfg.MAX_CONNECTIONS then |
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665 client:close( ) -- refuse connection |
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666 debug( "maximal connections reached, refuse client connection; accept delay:", delay ) |
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667 return EV_TIMEOUT, delay -- delay for next accept attempt |
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668 end |
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669 local client_ip, client_port = client:getpeername( ) |
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670 interface._connections = interface._connections + 1 -- increase connection count |
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671 local clientinterface = handleclient( client, client_ip, client_port, interface, pattern, listener, sslctx ) |
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672 --vdebug( "client id:", clientinterface, "startssl:", startssl ) |
7224 | 673 if has_luasec and sslctx then |
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674 clientinterface:starttls(sslctx, true) |
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675 else |
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676 clientinterface:_start_session( true ) |
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677 end |
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678 debug( "accepted incoming client connection from:", client_ip or "<unknown IP>", client_port or "<unknown port>", "to", port or "<unknown port>"); |
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679 |
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680 client, err = server:accept() -- try to accept again |
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681 end |
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682 return EV_READ |
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683 end |
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684 |
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685 server:settimeout( 0 ) |
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686 setmetatable(interface, interface_mt) |
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688 interface:_start_session() |
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689 return interface |
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690 end |
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691 |
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692 local function addserver( addr, port, listener, pattern, sslctx, startssl ) -- TODO: check arguments |
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693 --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslctx or "nil", startssl or "nil") |
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694 if sslctx and not has_luasec then |
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695 debug "fatal error: luasec not found" |
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696 return nil, "luasec not found" |
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697 end |
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698 local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket |
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699 if not server then |
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700 debug( "creating server socket on "..addr.." port "..port.." failed:", err ) |
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701 return nil, err |
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diff
changeset
|
702 end |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
703 local interface = handleserver( server, addr, port, pattern, listener, sslctx, startssl ) -- new server handler |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
704 debug( "new server created with id:", tostring(interface)) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
705 return interface |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
706 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
707 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
708 local function wrapclient( client, ip, port, listeners, pattern, sslctx ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
709 local interface = handleclient( client, ip, port, nil, pattern, listeners, sslctx ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
710 interface:_start_connection(sslctx) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
711 return interface, client |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
712 --function handleclient( client, ip, port, server, pattern, listener, _, sslctx ) -- creates an client interface |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
713 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
714 |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
715 local function addclient( addr, serverport, listener, pattern, sslctx, typ ) |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
716 if sslctx and not has_luasec then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
717 debug "need luasec, but not available" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
718 return nil, "luasec not found" |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
719 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
720 if not typ then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
721 local addrinfo, err = getaddrinfo(addr) |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
722 if not addrinfo then return nil, err end |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
723 if addrinfo[1] and addrinfo[1].family == "inet6" then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
724 typ = "tcp6" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
725 else |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
726 typ = "tcp" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
727 end |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
728 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
729 local create = socket[typ] |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
730 if type( create ) ~= "function" then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
731 return nil, "invalid socket type" |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
732 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
733 local client, err = create() -- creating new socket |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
734 if not client then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
735 debug( "cannot create socket:", err ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
736 return nil, err |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
737 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
738 client:settimeout( 0 ) -- set nonblocking |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
739 local res, err = client:connect( addr, serverport ) -- connect |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
740 if res or ( err == "timeout" ) then |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
741 local ip, port = client:getsockname( ) |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
742 local interface = wrapclient( client, ip, serverport, listener, pattern, sslctx ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
743 debug( "new connection id:", interface.id ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
744 return interface, err |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
745 else |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
746 debug( "new connection failed:", err ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
747 return nil, err |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
748 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
749 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
750 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
751 local function loop( ) -- starts the event loop |
2333
ed824115becf
net.server_event: Return "quitting" on loop exit to be compatible with net.server_select, and give Prosody a way to know why the loop broke
Matthew Wild <mwild1@gmail.com>
parents:
2318
diff
changeset
|
752 base:loop( ) |
ed824115becf
net.server_event: Return "quitting" on loop exit to be compatible with net.server_select, and give Prosody a way to know why the loop broke
Matthew Wild <mwild1@gmail.com>
parents:
2318
diff
changeset
|
753 return "quitting"; |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
754 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
755 |
6850
41de00647ad3
server_event: Move local references to various functions to top of file
Kim Alvefur <zash@zash.se>
parents:
6849
diff
changeset
|
756 local function newevent( ... ) |
41de00647ad3
server_event: Move local references to various functions to top of file
Kim Alvefur <zash@zash.se>
parents:
6849
diff
changeset
|
757 return addevent( base, ... ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
758 end |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
759 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
760 local function closeallservers ( arg ) |
6849
0455b9686e16
server_event: Replace implementation of ordered set with a simple table set
Kim Alvefur <zash@zash.se>
parents:
6819
diff
changeset
|
761 for item in pairs( interfacelist ) do |
2334
4cedfeeaaed4
net.server_event: Fix closeallservers() to work correctly after the giant refactorizification
Matthew Wild <mwild1@gmail.com>
parents:
2333
diff
changeset
|
762 if item.type == "server" then |
4cedfeeaaed4
net.server_event: Fix closeallservers() to work correctly after the giant refactorizification
Matthew Wild <mwild1@gmail.com>
parents:
2333
diff
changeset
|
763 item:close( arg ) |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
764 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
765 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
766 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
767 |
2335
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
768 local function setquitting(yes) |
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
769 if yes then |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
770 -- Quit now |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
771 closeallservers(); |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
772 base:loopexit(); |
2335
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
773 end |
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
774 end |
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
775 |
4399
1b4161970842
net.server_event, net.server_select: Fixed some global pollution.
Waqas Hussain <waqas20@gmail.com>
parents:
4377
diff
changeset
|
776 local function get_backend() |
8314
1d2149d84c72
net.server_event: Add "libevent" to backend description
Kim Alvefur <zash@zash.se>
parents:
7810
diff
changeset
|
777 return "libevent " .. base:method(); |
2340
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
778 end |
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
779 |
2434
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
780 -- We need to hold onto the events to stop them |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
781 -- being garbage-collected |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
782 local signal_events = {}; -- [signal_num] -> event object |
4399
1b4161970842
net.server_event, net.server_select: Fixed some global pollution.
Waqas Hussain <waqas20@gmail.com>
parents:
4377
diff
changeset
|
783 local function hook_signal(signal_num, handler) |
6856
489f4ae291bf
server_event: Remove unused argument [luacheck]
Kim Alvefur <zash@zash.se>
parents:
6855
diff
changeset
|
784 local function _handler() |
2434
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
785 local ret = handler(); |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
786 if ret ~= false then -- Continue handling this signal? |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
787 return EV_SIGNAL; -- Yes |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
788 end |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
789 return -1; -- Close this event |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
790 end |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
791 signal_events[signal_num] = base:addevent(signal_num, EV_SIGNAL, _handler); |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
792 return signal_events[signal_num]; |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
793 end |
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
794 |
3003
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
795 local function link(sender, receiver, buffersize) |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
796 local sender_locked; |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5756
diff
changeset
|
797 |
3003
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
798 function receiver:ondrain() |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
799 if sender_locked then |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
800 sender:resume(); |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
801 sender_locked = nil; |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
802 end |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
803 end |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5756
diff
changeset
|
804 |
3003
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
805 function sender:onincoming(data) |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
806 receiver:write(data); |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
807 if receiver.writebufferlen >= buffersize then |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
808 sender_locked = true; |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
809 sender:pause(); |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
810 end |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
811 end |
6314
8029b8a5f37a
net.server_select/event: Switch sender mode to *a when reading, to make sure we get all available data
Matthew Wild <mwild1@gmail.com>
parents:
6047
diff
changeset
|
812 sender:set_mode("*a"); |
3003
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
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813 end |
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
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814 |
6862
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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diff
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|
815 local function add_task(delay, callback) |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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816 local event_handle; |
7a81fb23de5d
server_event: Remove needless scoping around add_task
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parents:
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changeset
|
817 event_handle = base:addevent(nil, 0, function () |
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server_event: Remove needless scoping around add_task
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parents:
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diff
changeset
|
818 local ret = callback(socket_gettime()); |
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server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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changeset
|
819 if ret then |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
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820 return 0, ret; |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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diff
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|
821 elseif event_handle then |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
822 return -1; |
6481
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
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diff
changeset
|
823 end |
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
824 end |
6862
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
825 , delay); |
6929
03bc9e197fcc
net.server_event: Return event handle from add_task so it can be closed by eg util.timer
Kim Alvefur <zash@zash.se>
parents:
6862
diff
changeset
|
826 return event_handle; |
6481
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
827 end |
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
828 |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
829 return { |
a831de056de3
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parents:
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diff
changeset
|
830 cfg = cfg, |
a831de056de3
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Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
831 base = base, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
832 loop = loop, |
3003
48871a549b4c
net.server_select, net.server_event: Add server.link() to link 2 connections with an intermediate buffer of the specified size
Matthew Wild <mwild1@gmail.com>
parents:
3002
diff
changeset
|
833 link = link, |
6853
a2cc477eb19b
server_event: Rename luaevent module variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents:
6852
diff
changeset
|
834 event = levent, |
2318
a831de056de3
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parents:
2303
diff
changeset
|
835 event_base = base, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
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parents:
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diff
changeset
|
836 addevent = newevent, |
a831de056de3
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parents:
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diff
changeset
|
837 addserver = addserver, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
838 addclient = addclient, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
839 wrapclient = wrapclient, |
2336
fb1d9d2444df
Rename closeallservers to closeall in the public API (same as net.server_select) and expose setquitting
Matthew Wild <mwild1@gmail.com>
parents:
2335
diff
changeset
|
840 setquitting = setquitting, |
fb1d9d2444df
Rename closeallservers to closeall in the public API (same as net.server_select) and expose setquitting
Matthew Wild <mwild1@gmail.com>
parents:
2335
diff
changeset
|
841 closeall = closeallservers, |
2340
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
842 get_backend = get_backend, |
2434
4403d4473783
net.server_event: Add server.hook_signal(signal_num, handler) to wrap libevent's signal-catching interface
Matthew Wild <mwild1@gmail.com>
parents:
2375
diff
changeset
|
843 hook_signal = hook_signal, |
6481
dbc72cd1332e
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daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
844 add_task = add_task, |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
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parents:
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diff
changeset
|
845 |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
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parents:
2303
diff
changeset
|
846 __NAME = SCRIPT_NAME, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
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parents:
2303
diff
changeset
|
847 __DATE = LAST_MODIFIED, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
848 __AUTHOR = SCRIPT_AUTHOR, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
849 __VERSION = SCRIPT_VERSION, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
850 |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
851 } |