Tue, 13 Jan 2009 22:37:07 +0500
modulemanager: Added reload support, with callbacks for saving and restoring state
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1 | --[[ |
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2 | |
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3 | server.lua by blastbeat of the luadch project |
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4 | |
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5 | re-used here under the MIT/X Consortium License |
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6 | |
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7 | Modifications (C) 2008 Matthew Wild, Waqas Hussain |
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8 | ]]-- |
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9 | |
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10 | ----------------------------------// DECLARATION //-- |
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11 | |
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12 | --// constants //-- |
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13 | |
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14 | local STAT_UNIT = 1 / ( 1024 * 1024 ) -- mb |
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15 | |
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16 | --// lua functions //-- |
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17 | |
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18 | local function use( what ) return _G[ what ] end |
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19 | |
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20 | local type = use "type" |
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21 | local pairs = use "pairs" |
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22 | local ipairs = use "ipairs" |
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23 | local tostring = use "tostring" |
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24 | local collectgarbage = use "collectgarbage" |
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25 | |
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26 | --// lua libs //-- |
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27 | |
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28 | local table = use "table" |
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29 | local coroutine = use "coroutine" |
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30 | |
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31 | --// lua lib methods //-- |
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32 | |
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33 | local table_concat = table.concat |
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34 | local table_remove = table.remove |
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35 | local string_sub = use'string'.sub |
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36 | local coroutine_wrap = coroutine.wrap |
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37 | local coroutine_yield = coroutine.yield |
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38 | local print = print; |
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39 | local out_put = function () end --print; |
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40 | local out_error = print; |
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41 | |
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42 | --// extern libs //-- |
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43 | |
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44 | local luasec = select(2, pcall(require, "ssl")) |
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45 | local luasocket = require "socket" |
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46 | |
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47 | --// extern lib methods //-- |
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48 | |
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49 | local ssl_wrap = ( luasec and luasec.wrap ) |
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50 | local socket_bind = luasocket.bind |
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51 | local socket_select = luasocket.select |
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52 | local ssl_newcontext = ( luasec and luasec.newcontext ) |
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53 | |
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54 | --// functions //-- |
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55 | |
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56 | local loop |
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57 | local stats |
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58 | local addtimer |
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59 | local closeall |
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60 | local addserver |
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61 | local firetimer |
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62 | local closesocket |
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63 | local removesocket |
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64 | local wrapserver |
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65 | local wraptcpclient |
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66 | local wrapsslclient |
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67 | |
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68 | --// tables //-- |
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69 | |
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70 | local listener |
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71 | local readlist |
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72 | local writelist |
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73 | local socketlist |
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74 | local timelistener |
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75 | |
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76 | --// simple data types //-- |
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77 | |
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78 | local _ |
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79 | local readlen = 0 -- length of readlist |
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80 | local writelen = 0 -- lenght of writelist |
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81 | |
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82 | local sendstat= 0 |
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83 | local receivestat = 0 |
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84 | |
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85 | ----------------------------------// DEFINITION //-- |
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86 | |
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87 | listener = { } -- key = port, value = table |
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88 | readlist = { } -- array with sockets to read from |
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89 | writelist = { } -- arrary with sockets to write to |
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90 | socketlist = { } -- key = socket, value = wrapped socket |
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91 | timelistener = { } |
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92 | |
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93 | stats = function( ) |
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94 | return receivestat, sendstat |
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95 | end |
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96 | |
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97 | wrapserver = function( listener, socket, ip, serverport, mode, sslctx, wrapper_function ) -- this function wraps a server |
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98 | |
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99 | local dispatch, disconnect = listener.listener, listener.disconnect -- dangerous |
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100 | |
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101 | local wrapclient, err |
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102 | |
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103 | out_put("Starting a new server on "..tostring(serverport).." with ssl: "..tostring(sslctx)); |
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104 | if sslctx then |
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105 | if not ssl_newcontext then |
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106 | return nil, "luasec not found" |
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107 | end |
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108 | if type( sslctx ) ~= "table" then |
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109 | out_error "server.lua: wrong server sslctx" |
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110 | return nil, "wrong server sslctx" |
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111 | end |
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112 | sslctx, err = ssl_newcontext( sslctx ) |
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113 | if not sslctx then |
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114 | err = err or "wrong sslctx parameters" |
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115 | out_error( "server.lua: ", err ) |
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116 | return nil, err |
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117 | end |
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118 | end |
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119 | |
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120 | if wrapper_function then |
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121 | wrapclient = wrapper_function |
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122 | elseif sslctx then |
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123 | wrapclient = wrapsslclient |
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124 | else |
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125 | wrapclient = wraptcpclient |
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126 | end |
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127 | |
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128 | local accept = socket.accept |
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129 | local close = socket.close |
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130 | |
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131 | --// public methods of the object //-- |
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132 | |
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133 | local handler = { } |
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134 | |
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135 | handler.shutdown = function( ) end |
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136 | |
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137 | --[[handler.listener = function( data, err ) |
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138 | return ondata( handler, data, err ) |
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139 | end]] |
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140 | handler.ssl = function( ) |
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141 | return sslctx and true or false |
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142 | end |
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143 | handler.close = function( closed ) |
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144 | _ = not closed and close( socket ) |
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145 | writelen = removesocket( writelist, socket, writelen ) |
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146 | readlen = removesocket( readlist, socket, readlen ) |
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147 | socketlist[ socket ] = nil |
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148 | handler = nil |
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149 | end |
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150 | handler.ip = function( ) |
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151 | return ip |
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152 | end |
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153 | handler.serverport = function( ) |
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154 | return serverport |
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155 | end |
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156 | handler.socket = function( ) |
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157 | return socket |
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158 | end |
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159 | handler.receivedata = function( ) |
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160 | local client, err = accept( socket ) -- try to accept |
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161 | if client then |
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162 | local ip, clientport = client:getpeername( ) |
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163 | client:settimeout( 0 ) |
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164 | local handler, client, err = wrapclient( listener, client, ip, serverport, clientport, mode, sslctx ) -- wrap new client socket |
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165 | if err then -- error while wrapping ssl socket |
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166 | return false |
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167 | end |
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168 | out_put( "server.lua: accepted new client connection from ", ip, ":", clientport ) |
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169 | return dispatch( handler ) |
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170 | elseif err then -- maybe timeout or something else |
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171 | out_put( "server.lua: error with new client connection: ", err ) |
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172 | return false |
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173 | end |
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174 | end |
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175 | return handler |
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176 | end |
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177 | |
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178 | wrapsslclient = function( listener, socket, ip, serverport, clientport, mode, sslctx ) -- this function wraps a ssl cleint |
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179 | |
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180 | local dispatch, disconnect = listener.listener, listener.disconnect |
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181 | |
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182 | --// transform socket to ssl object //-- |
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183 | |
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184 | local err |
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185 | socket, err = ssl_wrap( socket, sslctx ) -- wrap socket |
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186 | if err then |
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187 | out_put( "server.lua: ssl error: ", err ) |
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188 | return nil, nil, err -- fatal error |
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189 | end |
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190 | socket:settimeout( 0 ) |
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191 | |
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192 | --// private closures of the object //-- |
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193 | |
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194 | local writequeue = { } -- buffer for messages to send |
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195 | |
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196 | local eol, fatal_send_error, wants_closing |
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197 | |
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198 | local sstat, rstat = 0, 0 |
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199 | |
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200 | --// local import of socket methods //-- |
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201 | |
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202 | local send = socket.send |
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203 | local receive = socket.receive |
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204 | local close = socket.close |
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205 | --local shutdown = socket.shutdown |
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206 | |
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207 | --// public methods of the object //-- |
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208 | |
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209 | local handler = { } |
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210 | |
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211 | handler.getstats = function( ) |
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212 | return rstat, sstat |
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213 | end |
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214 | |
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215 | handler.listener = function( data, err ) |
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216 | return listener( handler, data, err ) |
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217 | end |
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218 | handler.ssl = function( ) |
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219 | return true |
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220 | end |
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221 | handler.send = function( _, data, i, j ) |
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222 | return send( socket, data, i, j ) |
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223 | end |
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224 | handler.receive = function( pattern, prefix ) |
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225 | return receive( socket, pattern, prefix ) |
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226 | end |
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227 | handler.shutdown = function( pattern ) |
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228 | --return shutdown( socket, pattern ) |
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229 | end |
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230 | handler.close = function( closed ) |
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231 | if eol and not fatal_send_error then |
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232 | -- There is data in the buffer, and we haven't experienced |
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233 | -- an error trying to send yet, so we'll flush the buffer now |
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234 | handler._dispatchdata(); |
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235 | if eol then |
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236 | -- and there is *still* data in the buffer |
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237 | -- we'll give up for now, and close later |
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238 | wants_closing = true; |
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239 | return; |
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240 | end |
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241 | end |
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242 | close( socket ) |
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243 | writelen = ( eol and removesocket( writelist, socket, writelen ) ) or writelen |
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244 | readlen = removesocket( readlist, socket, readlen ) |
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245 | socketlist[ socket ] = nil |
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246 | out_put "server.lua: closed handler and removed socket from list" |
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247 | end |
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248 | handler.ip = function( ) |
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249 | return ip |
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250 | end |
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251 | handler.serverport = function( ) |
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252 | return serverport |
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253 | end |
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254 | handler.clientport = function( ) |
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255 | return clientport |
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256 | end |
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257 | |
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258 | handler.write = function( data ) |
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259 | if not eol then |
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260 | writelen = writelen + 1 |
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261 | writelist[ writelen ] = socket |
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262 | eol = 0 |
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263 | end |
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264 | eol = eol + 1 |
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265 | writequeue[ eol ] = data |
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266 | end |
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267 | handler.writequeue = function( ) |
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268 | return writequeue |
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269 | end |
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270 | handler.socket = function( ) |
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271 | return socket |
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272 | end |
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273 | handler.mode = function( ) |
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274 | return mode |
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275 | end |
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276 | handler._receivedata = function( ) |
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277 | local data, err, part = receive( socket, mode ) -- receive data in "mode" |
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278 | if not err or ( err == "timeout" or err == "wantread" ) then -- received something |
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279 | local data = data or part or "" |
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280 | local count = #data * STAT_UNIT |
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281 | rstat = rstat + count |
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282 | receivestat = receivestat + count |
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283 | --out_put( "server.lua: read data '", data, "', error: ", err ) |
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284 | return dispatch( handler, data, err ) |
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285 | else -- connections was closed or fatal error |
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286 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
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287 | handler.close( ) |
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288 | disconnect( handler, err ) |
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289 | writequeue = nil |
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290 | handler = nil |
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291 | return false |
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292 | end |
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293 | end |
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294 | handler._dispatchdata = function( ) -- this function writes data to handlers |
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295 | local buffer = table_concat( writequeue, "", 1, eol ) |
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296 | local succ, err, byte = send( socket, buffer ) |
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297 | local count = ( succ or 0 ) * STAT_UNIT |
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298 | sstat = sstat + count |
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299 | sendstat = sendstat + count |
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300 | out_put( "server.lua: sended '", buffer, "', bytes: ", succ, ", error: ", err, ", part: ", byte, ", to: ", ip, ":", clientport ) |
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301 | if succ then -- sending succesful |
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302 | --writequeue = { } |
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303 | eol = nil |
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304 | writelen = removesocket( writelist, socket, writelen ) -- delete socket from writelist |
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305 | if wants_closing then |
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306 | handler.close(); |
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307 | end |
528
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308 | return true |
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309 | elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write |
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310 | buffer = string_sub( buffer, byte + 1, -1 ) -- new buffer |
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311 | writequeue[ 1 ] = buffer -- insert new buffer in queue |
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312 | eol = 1 |
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313 | return true |
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314 | else -- connection was closed during sending or fatal error |
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315 | fatal_send_error = true; |
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316 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
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317 | handler.close( ) |
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318 | disconnect( handler, err ) |
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319 | writequeue = nil |
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320 | handler = nil |
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321 | return false |
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322 | end |
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323 | end |
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324 | |
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325 | -- // COMPAT // -- |
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326 | |
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327 | handler.getIp = handler.ip |
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328 | handler.getPort = handler.clientport |
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329 | |
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330 | --// handshake //-- |
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331 | |
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332 | local wrote |
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333 | |
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334 | handler.handshake = coroutine_wrap( function( client ) |
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335 | local err |
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336 | for i = 1, 10 do -- 10 handshake attemps |
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337 | _, err = client:dohandshake( ) |
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338 | if not err then |
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339 | out_put( "server.lua: ssl handshake done" ) |
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340 | writelen = ( wrote and removesocket( writelist, socket, writelen ) ) or writelen |
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341 | handler.receivedata = handler._receivedata -- when handshake is done, replace the handshake function with regular functions |
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342 | handler.dispatchdata = handler._dispatchdata |
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343 | return dispatch( handler ) |
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344 | else |
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345 | out_put( "server.lua: error during ssl handshake: ", err ) |
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346 | if err == "wantwrite" then |
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347 | if wrote == nil then |
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348 | writelen = writelen + 1 |
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349 | writelist[ writelen ] = client |
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350 | wrote = true |
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351 | end |
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352 | end |
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353 | coroutine_yield( handler, nil, err ) -- handshake not finished |
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354 | end |
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355 | end |
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356 | _ = err ~= "closed" and close( socket ) |
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357 | handler.close( ) |
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358 | disconnect( handler, err ) |
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359 | writequeue = nil |
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360 | handler = nil |
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361 | return false -- handshake failed |
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362 | end |
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363 | ) |
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364 | handler.receivedata = handler.handshake |
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365 | handler.dispatchdata = handler.handshake |
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366 | |
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367 | handler.handshake( socket ) -- do handshake |
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368 | |
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369 | socketlist[ socket ] = handler |
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370 | readlen = readlen + 1 |
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371 | readlist[ readlen ] = socket |
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372 | |
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373 | return handler, socket |
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374 | end |
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375 | |
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376 | wraptlsclient = function( listener, socket, ip, serverport, clientport, mode, sslctx ) -- this function wraps a tls cleint |
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377 | |
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378 | local dispatch, disconnect = listener.listener, listener.disconnect |
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379 | |
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380 | --// transform socket to ssl object //-- |
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381 | |
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382 | local err |
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383 | |
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384 | socket:settimeout( 0 ) |
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385 | --// private closures of the object //-- |
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386 | |
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387 | local writequeue = { } -- buffer for messages to send |
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388 | |
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389 | local eol, fatal_send_error, wants_closing |
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390 | |
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391 | local sstat, rstat = 0, 0 |
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392 | |
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393 | --// local import of socket methods //-- |
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394 | |
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395 | local send = socket.send |
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396 | local receive = socket.receive |
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397 | local close = socket.close |
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398 | --local shutdown = socket.shutdown |
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399 | |
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400 | --// public methods of the object //-- |
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401 | |
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402 | local handler = { } |
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403 | |
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404 | handler.getstats = function( ) |
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405 | return rstat, sstat |
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406 | end |
519
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407 | |
528
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408 | handler.listener = function( data, err ) |
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409 | return listener( handler, data, err ) |
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410 | end |
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411 | handler.ssl = function( ) |
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412 | return false |
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413 | end |
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414 | handler.send = function( _, data, i, j ) |
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415 | return send( socket, data, i, j ) |
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416 | end |
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417 | handler.receive = function( pattern, prefix ) |
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418 | return receive( socket, pattern, prefix ) |
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419 | end |
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420 | handler.shutdown = function( pattern ) |
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421 | --return shutdown( socket, pattern ) |
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422 | end |
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423 | handler.close = function( closed ) |
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424 | if eol and not fatal_send_error then |
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425 | -- There is data in the buffer, and we haven't experienced |
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426 | -- an error trying to send yet, so we'll flush the buffer now |
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427 | handler._dispatchdata(); |
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428 | if eol then |
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429 | -- and there is *still* data in the buffer |
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430 | -- we'll give up for now, and close later |
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431 | wants_closing = true; |
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432 | return; |
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433 | end |
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434 | end |
528
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435 | close( socket ) |
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436 | writelen = ( eol and removesocket( writelist, socket, writelen ) ) or writelen |
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437 | readlen = removesocket( readlist, socket, readlen ) |
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438 | socketlist[ socket ] = nil |
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439 | out_put "server.lua: closed handler and removed socket from list" |
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440 | end |
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441 | handler.ip = function( ) |
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442 | return ip |
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443 | end |
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444 | handler.serverport = function( ) |
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445 | return serverport |
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446 | end |
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447 | handler.clientport = function( ) |
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448 | return clientport |
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449 | end |
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450 | |
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451 | handler.write = function( data ) |
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452 | if not eol then |
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453 | writelen = writelen + 1 |
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454 | writelist[ writelen ] = socket |
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455 | eol = 0 |
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456 | end |
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457 | eol = eol + 1 |
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458 | writequeue[ eol ] = data |
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459 | end |
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460 | handler.writequeue = function( ) |
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461 | return writequeue |
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462 | end |
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463 | handler.socket = function( ) |
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464 | return socket |
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465 | end |
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466 | handler.mode = function( ) |
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467 | return mode |
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468 | end |
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469 | handler._receivedata = function( ) |
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470 | local data, err, part = receive( socket, mode ) -- receive data in "mode" |
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471 | if not err or ( err == "timeout" or err == "wantread" ) then -- received something |
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472 | local data = data or part or "" |
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473 | local count = #data * STAT_UNIT |
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474 | rstat = rstat + count |
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475 | receivestat = receivestat + count |
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476 | --out_put( "server.lua: read data '", data, "', error: ", err ) |
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477 | return dispatch( handler, data, err ) |
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478 | else -- connections was closed or fatal error |
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479 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
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480 | handler.close( ) |
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481 | disconnect( handler, err ) |
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482 | writequeue = nil |
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483 | handler = nil |
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484 | return false |
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485 | end |
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486 | end |
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487 | handler._dispatchdata = function( ) -- this function writes data to handlers |
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488 | local buffer = table_concat( writequeue, "", 1, eol ) |
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489 | local succ, err, byte = send( socket, buffer ) |
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490 | local count = ( succ or 0 ) * STAT_UNIT |
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491 | sstat = sstat + count |
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492 | sendstat = sendstat + count |
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493 | out_put( "server.lua: sended '", buffer, "', bytes: ", succ, ", error: ", err, ", part: ", byte, ", to: ", ip, ":", clientport ) |
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494 | if succ then -- sending succesful |
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495 | --writequeue = { } |
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496 | eol = nil |
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497 | writelen = removesocket( writelist, socket, writelen ) -- delete socket from writelist |
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498 | if handler.need_tls then |
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499 | out_put("server.lua: connection is ready for tls handshake"); |
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500 | handler.starttls(true); |
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501 | end |
630
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502 | if wants_closing then |
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503 | handler.close(); |
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504 | end |
528
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505 | return true |
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506 | elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write |
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507 | buffer = string_sub( buffer, byte + 1, -1 ) -- new buffer |
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508 | writequeue[ 1 ] = buffer -- insert new buffer in queue |
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509 | eol = 1 |
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510 | return true |
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511 | else -- connection was closed during sending or fatal error |
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512 | fatal_send_error = true; -- :( |
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513 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
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514 | handler.close( ) |
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515 | disconnect( handler, err ) |
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516 | writequeue = nil |
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517 | handler = nil |
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518 | return false |
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519 | end |
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520 | end |
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521 | |
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522 | handler.receivedata, handler.dispatchdata = handler._receivedata, handler._dispatchdata; |
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523 | -- // COMPAT // -- |
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524 | |
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525 | handler.getIp = handler.ip |
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526 | handler.getPort = handler.clientport |
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527 | |
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528 | --// handshake //-- |
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529 | |
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530 | local wrote, read |
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531 | |
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532 | handler.starttls = function (now) |
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533 | if not now then out_put("server.lua: we need to do tls, but delaying until later"); handler.need_tls = true; return; end |
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534 | out_put( "server.lua: attempting to start tls on "..tostring(socket) ) |
567 | 535 | local oldsocket = socket; |
528
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536 | socket, err = ssl_wrap( socket, sslctx ) -- wrap socket |
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537 | out_put("sslwrapped socket is "..tostring(socket)); |
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538 | if err then |
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539 | out_put( "server.lua: ssl error: ", err ) |
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540 | return nil, nil, err -- fatal error |
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541 | end |
567 | 542 | socket:settimeout(0); |
543 | ||
544 | -- Add the new socket to our system | |
545 | socketlist[ socket ] = handler | |
546 | readlen = readlen + 1 | |
547 | readlist[ readlen ] = socket | |
548 | ||
549 | -- Remove traces of the old socket | |
550 | readlen = removesocket( readlist, oldsocket, readlen ) | |
551 | socketlist [ oldsocket ] = nil; | |
552 | ||
528
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553 | send = socket.send |
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554 | receive = socket.receive |
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555 | close = socket.close |
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556 | handler.ssl = function( ) |
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557 | return true |
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558 | end |
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559 | handler.send = function( _, data, i, j ) |
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560 | return send( socket, data, i, j ) |
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561 | end |
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562 | handler.receive = function( pattern, prefix ) |
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563 | return receive( socket, pattern, prefix ) |
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564 | end |
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565 | |
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566 | handler.starttls = nil; |
564
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567 | handler.need_tls = nil |
528
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568 | |
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569 | handler.handshake = coroutine_wrap( function( client ) |
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570 | local err |
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571 | for i = 1, 10 do -- 10 handshake attemps |
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572 | _, err = client:dohandshake( ) |
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573 | if not err then |
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574 | out_put( "server.lua: ssl handshake done" ) |
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575 | writelen = ( wrote and removesocket( writelist, socket, writelen ) ) or writelen |
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576 | handler.receivedata = handler._receivedata -- when handshake is done, replace the handshake function with regular functions |
566 | 577 | handler.dispatchdata = handler._dispatchdata; |
528
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578 | return true; |
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579 | else |
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580 | out_put( "server.lua: error during ssl handshake: ", err ) |
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581 | if err == "wantwrite" then |
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582 | if wrote == nil then |
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583 | writelen = writelen + 1 |
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584 | writelist[ writelen ] = client |
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585 | wrote = true |
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586 | end |
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587 | end |
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588 | coroutine_yield( handler, nil, err ) -- handshake not finished |
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589 | end |
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590 | end |
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591 | _ = err ~= "closed" and close( socket ) |
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592 | handler.close( ) |
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593 | disconnect( handler, err ) |
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594 | writequeue = nil |
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595 | handler = nil |
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596 | return false -- handshake failed |
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597 | end |
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598 | ) |
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599 | handler.receivedata = handler.handshake |
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600 | handler.dispatchdata = handler.handshake |
562
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601 | |
528
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602 | handler.handshake( socket ) -- do handshake |
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603 | end |
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604 | socketlist[ socket ] = handler |
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605 | readlen = readlen + 1 |
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606 | readlist[ readlen ] = socket |
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607 | |
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608 | return handler, socket |
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609 | end |
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610 | |
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611 | wraptcpclient = function( listener, socket, ip, serverport, clientport, mode ) -- this function wraps a socket |
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612 | |
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613 | local dispatch, disconnect = listener.listener, listener.disconnect |
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614 | |
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615 | --// private closures of the object //-- |
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616 | |
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617 | local writequeue = { } -- list for messages to send |
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618 | |
630
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619 | local eol, fatal_send_error, wants_closing |
528
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620 | |
620
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621 | socket:settimeout(0); |
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622 | |
528
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623 | local rstat, sstat = 0, 0 |
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624 | |
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625 | --// local import of socket methods //-- |
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626 | |
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627 | local send = socket.send |
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628 | local receive = socket.receive |
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629 | local close = socket.close |
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630 | local shutdown = socket.shutdown |
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631 | |
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632 | --// public methods of the object //-- |
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633 | |
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634 | local handler = { } |
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635 | |
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636 | handler.getstats = function( ) |
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637 | return rstat, sstat |
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638 | end |
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639 | |
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640 | handler.listener = function( data, err ) |
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641 | return listener( handler, data, err ) |
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642 | end |
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643 | handler.ssl = function( ) |
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644 | return false |
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645 | end |
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646 | handler.send = function( _, data, i, j ) |
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647 | return send( socket, data, i, j ) |
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648 | end |
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649 | handler.receive = function( pattern, prefix ) |
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650 | return receive( socket, pattern, prefix ) |
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|
651 | end |
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|
652 | handler.shutdown = function( pattern ) |
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653 | return shutdown( socket, pattern ) |
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654 | end |
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|
655 | handler.close = function( closed ) |
630
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656 | if eol and not fatal_send_error then |
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657 | -- There is data in the buffer, and we haven't experienced |
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658 | -- an error trying to send yet, so we'll flush the buffer now |
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659 | handler.dispatchdata(); |
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660 | if eol then |
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661 | -- and there is *still* data in the buffer |
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662 | -- we'll give up for now, and close later |
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663 | wants_closing = true; |
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664 | return; |
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Fix data loss when closing connection with a large write queue. Thanks albert :)
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|
665 | end |
e9336adb66e5
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|
666 | end |
528
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667 | _ = not closed and shutdown( socket ) |
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668 | _ = not closed and close( socket ) |
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669 | writelen = ( eol and removesocket( writelist, socket, writelen ) ) or writelen |
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670 | readlen = removesocket( readlist, socket, readlen ) |
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671 | socketlist[ socket ] = nil |
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|
672 | out_put "server.lua: closed handler and removed socket from list" |
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|
673 | end |
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674 | handler.ip = function( ) |
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675 | return ip |
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676 | end |
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677 | handler.serverport = function( ) |
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|
678 | return serverport |
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|
679 | end |
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680 | handler.clientport = function( ) |
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|
681 | return clientport |
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|
682 | end |
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683 | handler.write = function( data ) |
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684 | if not eol then |
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diff
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|
685 | writelen = writelen + 1 |
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|
686 | writelist[ writelen ] = socket |
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|
687 | eol = 0 |
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688 | end |
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|
689 | eol = eol + 1 |
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|
690 | writequeue[ eol ] = data |
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|
691 | end |
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|
692 | handler.writequeue = function( ) |
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diff
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|
693 | return writequeue |
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|
694 | end |
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|
695 | handler.socket = function( ) |
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|
696 | return socket |
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|
697 | end |
5fabb5aeed9d
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|
698 | handler.mode = function( ) |
5fabb5aeed9d
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|
699 | return mode |
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|
700 | end |
5fabb5aeed9d
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|
701 | |
5fabb5aeed9d
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|
702 | handler.receivedata = function( ) |
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703 | local data, err, part = receive( socket, mode ) -- receive data in "mode" |
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|
704 | if not err or ( err == "timeout" or err == "wantread" ) then -- received something |
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|
705 | local data = data or part or "" |
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diff
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|
706 | local count = #data * STAT_UNIT |
5fabb5aeed9d
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519
diff
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|
707 | rstat = rstat + count |
5fabb5aeed9d
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519
diff
changeset
|
708 | receivestat = receivestat + count |
562
04ee161d936b
Comment out debug logging for now
Matthew Wild <mwild1@gmail.com>
parents:
561
diff
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|
709 | --out_put( "server.lua: read data '", data, "', error: ", err ) |
528
5fabb5aeed9d
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diff
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|
710 | return dispatch( handler, data, err ) |
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diff
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|
711 | else -- connections was closed or fatal error |
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diff
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|
712 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
5fabb5aeed9d
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diff
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|
713 | handler.close( ) |
5fabb5aeed9d
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519
diff
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|
714 | disconnect( handler, err ) |
5fabb5aeed9d
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diff
changeset
|
715 | writequeue = nil |
5fabb5aeed9d
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parents:
519
diff
changeset
|
716 | handler = nil |
5fabb5aeed9d
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diff
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|
717 | return false |
5fabb5aeed9d
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519
diff
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|
718 | end |
5fabb5aeed9d
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parents:
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diff
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|
719 | end |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
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|
720 | |
5fabb5aeed9d
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|
721 | handler.dispatchdata = function( ) -- this function writes data to handlers |
5fabb5aeed9d
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519
diff
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|
722 | local buffer = table_concat( writequeue, "", 1, eol ) |
5fabb5aeed9d
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parents:
519
diff
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|
723 | local succ, err, byte = send( socket, buffer ) |
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519
diff
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|
724 | local count = ( succ or 0 ) * STAT_UNIT |
5fabb5aeed9d
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parents:
519
diff
changeset
|
725 | sstat = sstat + count |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
726 | sendstat = sendstat + count |
5fabb5aeed9d
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parents:
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diff
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|
727 | out_put( "server.lua: sended '", buffer, "', bytes: ", succ, ", error: ", err, ", part: ", byte, ", to: ", ip, ":", clientport ) |
5fabb5aeed9d
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parents:
519
diff
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|
728 | if succ then -- sending succesful |
5fabb5aeed9d
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parents:
519
diff
changeset
|
729 | --writequeue = { } |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
730 | eol = nil |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
731 | writelen = removesocket( writelist, socket, writelen ) -- delete socket from writelist |
630
e9336adb66e5
Fix data loss when closing connection with a large write queue. Thanks albert :)
Matthew Wild <mwild1@gmail.com>
parents:
620
diff
changeset
|
732 | if wants_closing then |
e9336adb66e5
Fix data loss when closing connection with a large write queue. Thanks albert :)
Matthew Wild <mwild1@gmail.com>
parents:
620
diff
changeset
|
733 | handler.close(); |
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Fix data loss when closing connection with a large write queue. Thanks albert :)
Matthew Wild <mwild1@gmail.com>
parents:
620
diff
changeset
|
734 | end |
528
5fabb5aeed9d
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parents:
519
diff
changeset
|
735 | return true |
5fabb5aeed9d
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parents:
519
diff
changeset
|
736 | elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
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parents:
519
diff
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|
737 | buffer = string_sub( buffer, byte + 1, -1 ) -- new buffer |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
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parents:
519
diff
changeset
|
738 | writequeue[ 1 ] = buffer -- insert new buffer in queue |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
739 | eol = 1 |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
740 | return true |
5fabb5aeed9d
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parents:
519
diff
changeset
|
741 | else -- connection was closed during sending or fatal error |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
742 | fatal_send_error = true; -- :'-( |
5fabb5aeed9d
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parents:
519
diff
changeset
|
743 | out_put( "server.lua: client ", ip, ":", clientport, " error: ", err ) |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
744 | handler.close( ) |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
745 | disconnect( handler, err ) |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
746 | writequeue = nil |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
747 | handler = nil |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
748 | return false |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
749 | end |
5fabb5aeed9d
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parents:
519
diff
changeset
|
750 | end |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
751 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
752 | -- // COMPAT // -- |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
753 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
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|
754 | handler.getIp = handler.ip |
5fabb5aeed9d
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parents:
519
diff
changeset
|
755 | handler.getPort = handler.clientport |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
756 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
757 | socketlist[ socket ] = handler |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
758 | readlen = readlen + 1 |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
759 | readlist[ readlen ] = socket |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
760 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
761 | return handler, socket |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
762 | end |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
763 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
764 | addtimer = function( listener ) |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
765 | timelistener[ #timelistener + 1 ] = listener |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
766 | end |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
767 | |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
768 | firetimer = function( listener ) |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
769 | for i, listener in ipairs( timelistener ) do |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
770 | listener( ) |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
771 | end |
5fabb5aeed9d
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Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
772 | end |
5fabb5aeed9d
Fix GPL'ing MIT/X licensed code :)
Matthew Wild <mwild1@gmail.com>
parents:
519
diff
changeset
|
773 | |
658
1952fdcf1017
Fix specifying ports in config, and SSL support
Matthew Wild <mwild1@gmail.com>
parents:
657
diff
changeset
|
774 | addserver = function( listeners, port, addr, mode, sslctx, wrapper_function ) -- this function provides a way for other scripts to reg a server |
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775 | local err |
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776 | if type( listeners ) ~= "table" then |
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777 | err = "invalid listener table" |
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|
778 | else |
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779 | for name, func in pairs( listeners ) do |
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780 | if type( func ) ~= "function" then |
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781 | --err = "invalid listener function" |
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|
782 | break |
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|
783 | end |
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|
784 | end |
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785 | end |
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|
786 | if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then |
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787 | err = "invalid port" |
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788 | elseif listener[ port ] then |
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789 | err= "listeners on port '" .. port .. "' already exist" |
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790 | elseif sslctx and not luasec then |
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791 | err = "luasec not found" |
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792 | end |
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|
793 | if err then |
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794 | out_error( "server.lua: ", err ) |
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|
795 | return nil, err |
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|
796 | end |
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|
797 | addr = addr or "*" |
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|
798 | local server, err = socket_bind( addr, port ) |
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799 | if err then |
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|
800 | out_error( "server.lua: ", err ) |
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801 | return nil, err |
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|
802 | end |
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|
803 | local handler, err = wrapserver( listeners, server, addr, port, mode, sslctx, wrapper_function ) -- wrap new server socket |
528
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804 | if not handler then |
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|
805 | server:close( ) |
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|
806 | return nil, err |
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|
807 | end |
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|
808 | server:settimeout( 0 ) |
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|
809 | readlen = readlen + 1 |
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|
810 | readlist[ readlen ] = server |
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|
811 | listener[ port ] = listeners |
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|
812 | socketlist[ server ] = handler |
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|
813 | out_put( "server.lua: new server listener on ", addr, ":", port ) |
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|
814 | return true |
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|
815 | end |
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|
816 | |
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|
817 | removesocket = function( tbl, socket, len ) -- this function removes sockets from a list |
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818 | for i, target in ipairs( tbl ) do |
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819 | if target == socket then |
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820 | len = len - 1 |
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821 | table_remove( tbl, i ) |
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|
822 | return len |
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|
823 | end |
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824 | end |
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825 | return len |
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826 | end |
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|
827 | |
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828 | closeall = function( ) |
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829 | for sock, handler in pairs( socketlist ) do |
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830 | handler.shutdown( ) |
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831 | handler.close( ) |
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832 | socketlist[ sock ] = nil |
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833 | end |
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|
834 | writelist, readlist, socketlist = { }, { }, { } |
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835 | end |
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|
836 | |
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837 | closesocket = function( socket ) |
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838 | writelen = removesocket( writelist, socket, writelen ) |
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839 | readlen = removesocket( readlist, socket, readlen ) |
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840 | socketlist[ socket ] = nil |
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|
841 | socket:close( ) |
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842 | end |
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843 | |
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844 | loop = function( ) -- this is the main loop of the program |
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845 | --signal_set( "hub", "run" ) |
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846 | repeat |
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847 | local read, write, err = socket_select( readlist, writelist, 1 ) -- 1 sec timeout, nice for timers |
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848 | for i, socket in ipairs( write ) do -- send data waiting in writequeues |
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849 | local handler = socketlist[ socket ] |
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|
850 | if handler then |
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851 | handler.dispatchdata( ) |
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852 | else |
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853 | closesocket( socket ) |
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|
854 | out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen |
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855 | end |
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856 | end |
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857 | for i, socket in ipairs( read ) do -- receive data |
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858 | local handler = socketlist[ socket ] |
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859 | if handler then |
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860 | handler.receivedata( ) |
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861 | else |
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862 | closesocket( socket ) |
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|
863 | out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen |
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864 | end |
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865 | end |
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866 | firetimer( ) |
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867 | until false |
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868 | return |
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869 | end |
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|
870 | |
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|
871 | ----------------------------------// BEGIN //-- |
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872 | |
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873 | ----------------------------------// PUBLIC INTERFACE //-- |
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874 | |
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|
875 | return { |
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876 | |
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|
877 | add = addserver, |
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878 | loop = loop, |
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879 | stats = stats, |
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880 | closeall = closeall, |
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881 | addtimer = addtimer, |
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882 | wraptcpclient = wraptcpclient, |
658
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|
883 | wrapsslclient = wrapsslclient, |
528
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884 | wraptlsclient = wraptlsclient, |
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885 | } |