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net/server_event.lua @ 9340:368b092bf4bf
mod_storage_memory: Fix saving of remaining items during deletion
All data is compiled into functions that return new copies in order to
prevent mutation of stored data.
This has downsides.
Also an ugly hack.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 22 Sep 2018 16:03:50 +0200 |
parent | 8983:23f66f04e216 |
child | 9385:58fe099043ed |
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 can't 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 -- don't 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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12 |
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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 = 14 * 60, -- 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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46 |
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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 EV_READWRITE == event then |
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110 if self.readcallback(event) == -1 then |
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111 -- Fatal error occurred |
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112 return -1; |
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113 end |
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114 end |
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115 if plainssl and has_luasec then -- start ssl session |
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116 self:starttls(self._sslctx, true) |
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117 else -- normal connection |
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118 self:_start_session(true) |
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119 end |
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120 debug( "new connection established. id:", self.id ) |
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121 end |
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122 self.eventconnect = nil |
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123 return -1 |
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124 end |
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125 self.eventconnect = addevent( base, self.conn, EV_READWRITE, callback, cfg.CONNECT_TIMEOUT ) |
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126 return true |
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127 end |
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128 function interface_mt:_start_session(call_onconnect) -- new session, for example after startssl |
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129 if self.type == "client" then |
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130 local callback = function( ) |
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131 self:_lock( false, false, false ) |
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132 --vdebug( "start listening on client socket with id:", self.id ) |
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133 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback |
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134 if call_onconnect then |
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135 self:onconnect() |
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136 end |
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137 self.eventsession = nil |
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138 return -1 |
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139 end |
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140 self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 ) |
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141 else |
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142 self:_lock( false ) |
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143 --vdebug( "start listening on server socket with id:", self.id ) |
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144 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback ) -- register callback |
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145 end |
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146 return true |
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147 end |
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148 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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149 --vdebug( "starting ssl session with client id:", self.id ) |
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150 local _ |
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151 _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks! |
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152 _ = self.eventwrite and self.eventwrite:close( ) |
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153 self.eventread, self.eventwrite = nil, nil |
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154 local err |
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155 self.conn, err = ssl.wrap( self.conn, self._sslctx ) |
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156 if err then |
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157 self.fatalerror = err |
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158 self.conn = nil -- cannot be used anymore |
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159 if call_onconnect then |
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160 self.ondisconnect = nil -- don't call this when client isn't really connected |
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161 end |
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162 self:_close() |
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163 debug( "fatal error while ssl wrapping:", err ) |
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164 return false |
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165 end |
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166 self.conn:settimeout( 0 ) -- set non blocking |
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167 local handshakecallback = coroutine_wrap(function( event ) |
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168 local _, err |
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169 local attempt = 0 |
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170 local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPTS |
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171 while attempt < maxattempt do -- no endless loop |
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172 attempt = attempt + 1 |
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173 debug( "ssl handshake of client with id:"..tostring(self)..", attempt:"..attempt ) |
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174 if attempt > maxattempt then |
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175 self.fatalerror = "max handshake attempts exceeded" |
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176 elseif EV_TIMEOUT == event then |
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177 self.fatalerror = "timeout during handshake" |
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178 else |
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179 _, err = self.conn:dohandshake( ) |
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180 if not err then |
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181 self:_lock( false, false, false ) -- unlock the interface; sending, closing etc allowed |
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182 self.send = self.conn.send -- caching table lookups with new client object |
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183 self.receive = self.conn.receive |
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184 if not call_onconnect then -- trigger listener |
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185 self:onstatus("ssl-handshake-complete"); |
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186 end |
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187 self:_start_session( call_onconnect ) |
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188 debug( "ssl handshake done" ) |
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189 self.eventhandshake = nil |
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190 return -1 |
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191 end |
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192 if err == "wantwrite" then |
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193 event = EV_WRITE |
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194 elseif err == "wantread" then |
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195 event = EV_READ |
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196 else |
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197 debug( "ssl handshake error:", err ) |
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198 self.fatalerror = err |
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199 end |
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200 end |
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201 if self.fatalerror then |
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202 if call_onconnect then |
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203 self.ondisconnect = nil -- don't call this when client isn't really connected |
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204 end |
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205 self:_close() |
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206 debug( "handshake failed because:", self.fatalerror ) |
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207 self.eventhandshake = nil |
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208 return -1 |
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209 end |
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210 event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT ) -- yield this monster... |
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211 end |
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212 end |
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213 ) |
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214 debug "starting handshake..." |
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215 self:_lock( false, true, true ) -- unlock read/write events, but keep interface locked |
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216 self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT ) |
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217 return true |
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218 end |
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219 function interface_mt:_destroy() -- close this interface + events and call last listener |
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220 debug( "closing client with id:", self.id, self.fatalerror ) |
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221 self:_lock( true, true, true ) -- first of all, lock the interface to avoid further actions |
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222 local _ |
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223 _ = self.eventread and self.eventread:close( ) |
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224 if self.type == "client" then |
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225 _ = self.eventwrite and self.eventwrite:close( ) |
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226 _ = self.eventhandshake and self.eventhandshake:close( ) |
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227 _ = self.eventstarthandshake and self.eventstarthandshake:close( ) |
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228 _ = self.eventconnect and self.eventconnect:close( ) |
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229 _ = self.eventsession and self.eventsession:close( ) |
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230 _ = self.eventwritetimeout and self.eventwritetimeout:close( ) |
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231 _ = self.eventreadtimeout and self.eventreadtimeout:close( ) |
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232 -- call ondisconnect listener (won't be the case if handshake failed on connect) |
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233 _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) |
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234 _ = self.conn and self.conn:close( ) -- close connection |
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235 _ = self._server and self._server:counter(-1); |
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236 self.eventread, self.eventwrite = nil, nil |
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237 self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil |
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238 self.readcallback, self.writecallback = nil, nil |
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239 else |
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240 self.conn:close( ) |
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241 self.eventread, self.eventclose = nil, nil |
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242 self.interface, self.readcallback = nil, nil |
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243 end |
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244 interfacelist[ self ] = nil |
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245 return true |
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246 end |
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247 |
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248 function interface_mt:_lock(nointerface, noreading, nowriting) -- lock or unlock this interface or events |
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249 self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting |
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250 return nointerface, noreading, nowriting |
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251 end |
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252 |
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253 --TODO: Deprecate |
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254 function interface_mt:lock_read(switch) |
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255 if switch then |
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256 return self:pause(); |
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257 else |
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258 return self:resume(); |
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259 end |
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260 end |
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261 |
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262 function interface_mt:pause() |
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263 return self:_lock(self.nointerface, true, self.nowriting); |
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264 end |
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265 |
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266 function interface_mt:resume() |
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267 self:_lock(self.nointerface, false, self.nowriting); |
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268 if self.readcallback and not self.eventread then |
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269 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback |
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270 return true; |
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271 end |
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272 end |
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273 |
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274 function interface_mt:counter(c) |
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275 if c then |
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276 self._connections = self._connections + c |
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277 end |
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278 return self._connections |
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279 end |
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280 |
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281 -- Public methods |
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282 function interface_mt:write(data) |
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283 if self.nowriting then return nil, "locked" end |
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284 --vdebug( "try to send data to client, id/data:", self.id, data ) |
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285 data = tostring( data ) |
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286 local len = #data |
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287 local total = len + self.writebufferlen |
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288 if total > cfg.MAX_SEND_LENGTH then -- check buffer length |
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289 local err = "send buffer exceeded" |
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290 debug( "error:", err ) -- to much, check your app |
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291 return nil, err |
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292 end |
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293 t_insert(self.writebuffer, data) -- new buffer |
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294 self.writebufferlen = total |
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295 if not self.eventwrite then -- register new write event |
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296 --vdebug( "register new write event" ) |
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297 self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT ) |
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298 end |
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299 return true |
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300 end |
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301 function interface_mt:close() |
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302 if self.nointerface then return nil, "locked"; end |
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303 debug( "try to close client connection with id:", self.id ) |
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304 if self.type == "client" then |
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305 self.fatalerror = "client to close" |
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306 if self.eventwrite then -- wait for incomplete write request |
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307 self:_lock( true, true, false ) |
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308 debug "closing delayed until writebuffer is empty" |
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309 return nil, "writebuffer not empty, waiting" |
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310 else -- close now |
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311 self:_lock( true, true, true ) |
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312 self:_close() |
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313 return true |
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314 end |
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315 else |
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316 debug( "try to close server with id:", tostring(self.id)) |
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317 self.fatalerror = "server to close" |
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318 self:_lock( true ) |
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319 self:_close( 0 ) |
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320 return true |
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321 end |
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322 end |
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324 function interface_mt:socket() |
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325 return self.conn |
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326 end |
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327 |
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328 function interface_mt:server() |
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329 return self._server or self; |
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330 end |
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332 function interface_mt:port() |
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333 return self._port |
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334 end |
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336 function interface_mt:serverport() |
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337 return self._serverport |
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338 end |
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339 |
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340 function interface_mt:ip() |
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341 return self._ip |
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342 end |
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343 |
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344 function interface_mt:ssl() |
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345 return self._usingssl |
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346 end |
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347 interface_mt.clientport = interface_mt.port -- COMPAT server_select |
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349 function interface_mt:type() |
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350 return self._type or "client" |
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351 end |
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353 function interface_mt:connections() |
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354 return self._connections |
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355 end |
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357 function interface_mt:address() |
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358 return self.addr |
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359 end |
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360 |
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361 function interface_mt:set_sslctx(sslctx) |
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362 self._sslctx = sslctx; |
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363 if sslctx then |
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364 self.starttls = nil; -- use starttls() of interface_mt |
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365 else |
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366 self.starttls = false; -- prevent starttls() |
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367 end |
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368 end |
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369 |
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370 function interface_mt:set_mode(pattern) |
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371 if pattern then |
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372 self._pattern = pattern; |
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373 end |
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374 return self._pattern; |
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375 end |
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377 function interface_mt:set_send(new_send) -- luacheck: ignore 212 | |
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378 -- No-op, we always use the underlying connection's send |
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379 end |
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380 |
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381 function interface_mt:starttls(sslctx, call_onconnect) |
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382 debug( "try to start ssl at client id:", self.id ) |
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383 local err |
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384 self._sslctx = sslctx; |
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385 if self._usingssl then -- startssl was already called |
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386 err = "ssl already active" |
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387 end |
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388 if err then |
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389 debug( "error:", err ) |
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390 return nil, err |
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391 end |
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392 self._usingssl = true |
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393 self.startsslcallback = function( ) -- we have to start the handshake outside of a read/write event |
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394 self.startsslcallback = nil |
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395 self:_start_ssl(call_onconnect); |
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396 self.eventstarthandshake = nil |
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397 return -1 |
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398 end |
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399 if not self.eventwrite then |
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400 self:_lock( true, true, true ) -- lock the interface, to not disturb the handshake |
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401 self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 ) -- add event to start handshake |
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402 else |
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403 -- wait until writebuffer is empty |
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404 self:_lock( true, true, false ) |
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405 debug "ssl session delayed until writebuffer is empty..." |
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406 end |
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407 self.starttls = false; |
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408 return true |
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409 end |
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410 |
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411 function interface_mt:setoption(option, value) |
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412 if self.conn.setoption then |
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413 return self.conn:setoption(option, value); |
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414 end |
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415 return false, "setoption not implemented"; |
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416 end |
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417 |
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418 function interface_mt:setlistener(listener) |
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419 self:ondetach(); -- Notify listener that it is no longer responsible for this connection |
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420 self.onconnect = listener.onconnect; |
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421 self.ondisconnect = listener.ondisconnect; |
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422 self.onincoming = listener.onincoming; |
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423 self.ontimeout = listener.ontimeout; |
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424 self.onreadtimeout = listener.onreadtimeout; |
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425 self.onstatus = listener.onstatus; |
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426 self.ondetach = listener.ondetach; |
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427 self.ondrain = listener.ondrain; |
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428 end |
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429 |
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430 -- Stub handlers |
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431 function interface_mt:onconnect() |
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432 end |
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433 function interface_mt:onincoming() |
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434 end |
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435 function interface_mt:ondisconnect() |
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436 end |
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437 function interface_mt:ontimeout() |
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438 end |
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439 function interface_mt:onreadtimeout() |
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440 self.fatalerror = "timeout during receiving" |
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441 debug( "connection failed:", self.fatalerror ) |
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442 self:_close() |
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443 self.eventread = nil |
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444 end |
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445 function interface_mt:ondrain() |
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446 end |
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447 function interface_mt:ondetach() |
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448 end |
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449 function interface_mt:onstatus() |
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450 end |
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451 |
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452 -- End of client interface methods |
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453 |
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454 local function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface |
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455 --vdebug("creating client interfacce...") |
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456 local interface = { |
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457 type = "client"; |
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458 conn = client; |
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459 currenttime = socket_gettime( ); -- safe the origin |
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460 writebuffer = {}; -- writebuffer |
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461 writebufferlen = 0; -- length of writebuffer |
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462 send = client.send; -- caching table lookups |
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463 receive = client.receive; |
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464 onconnect = listener.onconnect; -- will be called when client disconnects |
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465 ondisconnect = listener.ondisconnect; -- will be called when client disconnects |
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466 onincoming = listener.onincoming; -- will be called when client sends data |
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467 ontimeout = listener.ontimeout; -- called when fatal socket timeout occurs |
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468 onreadtimeout = listener.onreadtimeout; -- called when socket inactivity timeout occurs |
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469 ondrain = listener.ondrain; -- called when writebuffer is empty |
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470 ondetach = listener.ondetach; -- called when disassociating this listener from this connection |
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471 onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS) |
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472 eventread = false, eventwrite = false, eventclose = false, |
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473 eventhandshake = false, eventstarthandshake = false; -- event handler |
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474 eventconnect = false, eventsession = false; -- more event handler... |
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475 eventwritetimeout = false; -- even more event handler... |
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476 eventreadtimeout = false; |
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477 fatalerror = false; -- error message |
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478 writecallback = false; -- will be called on write events |
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479 readcallback = false; -- will be called on read events |
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480 nointerface = true; -- lock/unlock parameter of this interface |
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481 noreading = false, nowriting = false; -- locks of the read/writecallback |
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482 startsslcallback = false; -- starting handshake callback |
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483 position = false; -- position of client in interfacelist |
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484 |
7336
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485 -- Properties |
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486 _ip = ip, _port = port, _server = server, _pattern = pattern, |
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487 _serverport = (server and server:port() or nil), |
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488 _sslctx = sslctx; -- parameters |
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489 _usingssl = false; -- client is using ssl; |
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490 } |
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491 if not has_luasec then interface.starttls = false; end |
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492 interface.id = tostring(interface):match("%x+$"); |
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493 interface.writecallback = function( event ) -- called on write events |
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494 --vdebug( "new client write event, id/ip/port:", interface, ip, port ) |
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495 if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then -- leave this event |
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496 --vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror ) |
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497 interface.eventwrite = false |
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498 return -1 |
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499 end |
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500 if EV_TIMEOUT == event then -- took too long to write some data to socket -> disconnect |
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501 interface.fatalerror = "timeout during writing" |
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502 debug( "writing failed:", interface.fatalerror ) |
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503 interface:_close() |
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504 interface.eventwrite = false |
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505 return -1 |
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506 else -- can write :) |
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507 if interface._usingssl then -- handle luasec |
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508 if interface.eventreadtimeout then -- we have to read first |
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509 local ret = interface.readcallback( ) -- call readcallback |
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510 --vdebug( "tried to read in writecallback, result:", ret ) |
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511 end |
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512 if interface.eventwritetimeout then -- luasec only |
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513 interface.eventwritetimeout:close( ) -- first we have to close timeout event which where regged after a wantread error |
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514 interface.eventwritetimeout = false |
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515 end |
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516 end |
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517 interface.writebuffer = { t_concat(interface.writebuffer) } |
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518 local succ, err, byte = interface.conn:send( interface.writebuffer[1], 1, interface.writebufferlen ) |
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519 --vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte ) |
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520 if succ then -- writing successful |
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521 interface.writebuffer[1] = nil |
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522 interface.writebufferlen = 0 |
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523 interface:ondrain(); |
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524 if interface.fatalerror then |
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525 debug "closing client after writing" |
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526 interface:_close() -- close interface if needed |
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527 elseif interface.startsslcallback then -- start ssl connection if needed |
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528 debug "starting ssl handshake after writing" |
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529 interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 ) |
7399 | 530 elseif interface.writebufferlen ~= 0 then |
7394 | 531 -- data possibly written from ondrain |
532 return EV_WRITE, cfg.WRITE_TIMEOUT | |
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533 elseif interface.eventreadtimeout then |
7385 | 534 return EV_WRITE, cfg.WRITE_TIMEOUT |
535 end | |
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536 interface.eventwrite = nil |
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537 return -1 |
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538 elseif byte and (err == "timeout" or err == "wantwrite") then -- want write again |
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539 --vdebug( "writebuffer is not empty:", err ) |
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540 interface.writebuffer[1] = s_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer |
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541 interface.writebufferlen = interface.writebufferlen - byte |
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542 if "wantread" == err then -- happens only with luasec |
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543 local callback = function( ) |
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544 interface:_close() |
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545 interface.eventwritetimeout = nil |
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546 return -1; |
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547 end |
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548 interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT ) -- reg a new timeout event |
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549 debug( "wantread during write attempt, reg it in readcallback but don't know what really happens next..." ) |
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550 -- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent |
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551 return -1 |
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552 end |
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553 return EV_WRITE, cfg.WRITE_TIMEOUT |
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554 else -- connection was closed during writing or fatal error |
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555 interface.fatalerror = err or "fatal error" |
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556 debug( "connection failed in write event:", interface.fatalerror ) |
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557 interface:_close() |
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558 interface.eventwrite = nil |
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559 return -1 |
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560 end |
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561 end |
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562 end |
7224 | 563 |
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564 interface.readcallback = function( event ) -- called on read events |
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565 --vdebug( "new client read event, id/ip/port:", tostring(interface.id), tostring(ip), tostring(port) ) |
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566 if interface.noreading or interface.fatalerror then -- leave this event |
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567 --vdebug( "leaving this event because:", tostring(interface.noreading or interface.fatalerror) ) |
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568 interface.eventread = nil |
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569 return -1 |
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570 end |
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571 if EV_TIMEOUT == event and not interface.conn:dirty() and interface:onreadtimeout() ~= true then |
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572 interface.fatalerror = "timeout during receiving" |
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573 debug( "connection failed:", interface.fatalerror ) |
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574 interface:_close() |
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575 interface.eventread = nil |
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576 return -1 -- took too long to get some data from client -> disconnect |
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577 end |
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578 if interface._usingssl then -- handle luasec |
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579 if interface.eventwritetimeout then -- ok, in the past writecallback was regged |
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580 local ret = interface.writecallback( ) -- call it |
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581 --vdebug( "tried to write in readcallback, result:", tostring(ret) ) |
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582 end |
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583 if interface.eventreadtimeout then |
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584 interface.eventreadtimeout:close( ) |
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585 interface.eventreadtimeout = nil |
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586 end |
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587 end |
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588 local buffer, err, part = interface.conn:receive( interface._pattern ) -- receive buffer with "pattern" |
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589 --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) ) |
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590 buffer = buffer or part |
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591 if buffer and #buffer > cfg.MAX_READ_LENGTH then -- check buffer length |
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592 interface.fatalerror = "receive buffer exceeded" |
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593 debug( "fatal error:", interface.fatalerror ) |
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594 interface:_close() |
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595 interface.eventread = nil |
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596 return -1 |
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597 end |
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598 if err and ( err ~= "timeout" and err ~= "wantread" ) then |
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599 if "wantwrite" == err then -- need to read on write event |
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600 if not interface.eventwrite then -- register new write event if needed |
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601 interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT ) |
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602 end |
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603 interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT, |
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604 function( ) interface:_close() end, cfg.READ_TIMEOUT) |
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605 debug( "wantwrite during read attempt, reg it in writecallback but don't know what really happens next..." ) |
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606 -- to be honest i don't know what happens next, if it is allowed to first read, the write etc... |
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607 else -- connection was closed or fatal error |
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608 interface.fatalerror = err |
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609 debug( "connection failed in read event:", interface.fatalerror ) |
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610 interface:_close() |
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611 interface.eventread = nil |
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612 return -1 |
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613 end |
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614 else |
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615 interface.onincoming( interface, buffer, err ) -- send new data to listener |
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616 end |
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617 if interface.noreading then |
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618 interface.eventread = nil; |
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619 return -1; |
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620 end |
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621 if interface.conn:dirty() then -- still data left in buffer |
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622 return EV_TIMEOUT, cfg.READ_RETRY_DELAY; |
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623 end |
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624 return EV_READ, cfg.READ_TIMEOUT |
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625 end |
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626 |
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627 client:settimeout( 0 ) -- set non blocking |
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628 setmetatable(interface, interface_mt) |
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629 interfacelist[ interface ] = true -- add to interfacelist |
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630 return interface |
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631 end |
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632 |
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633 local function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface |
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634 debug "creating server interface..." |
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635 local interface = { |
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636 _connections = 0; |
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637 |
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638 type = "server"; |
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639 conn = server; |
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640 onconnect = listener.onconnect; -- will be called when new client connected |
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641 eventread = false; -- read event handler |
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642 eventclose = false; -- close event handler |
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643 readcallback = false; -- read event callback |
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644 fatalerror = false; -- error message |
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645 nointerface = true; -- lock/unlock parameter |
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646 |
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647 _ip = addr, _port = port, _pattern = pattern, |
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648 _sslctx = sslctx; |
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649 } |
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650 interface.id = tostring(interface):match("%x+$"); |
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651 interface.readcallback = function( event ) -- server handler, called on incoming connections |
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652 --vdebug( "server can accept, id/addr/port:", interface, addr, port ) |
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653 if interface.fatalerror then |
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654 --vdebug( "leaving this event because:", self.fatalerror ) |
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655 interface.eventread = nil |
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656 return -1 |
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657 end |
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658 local delay = cfg.ACCEPT_DELAY |
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659 if EV_TIMEOUT == event then |
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660 if interface._connections >= cfg.MAX_CONNECTIONS then -- check connection count |
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661 debug( "to many connections, seconds to wait for next accept:", delay ) |
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662 return EV_TIMEOUT, delay -- timeout... |
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663 else |
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664 return EV_READ -- accept again |
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665 end |
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666 end |
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667 --vdebug("max connection check ok, accepting...") |
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668 local client, err = server:accept() -- try to accept; TODO: check err |
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669 while client do |
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670 if interface._connections >= cfg.MAX_CONNECTIONS then |
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671 client:close( ) -- refuse connection |
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672 debug( "maximal connections reached, refuse client connection; accept delay:", delay ) |
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673 return EV_TIMEOUT, delay -- delay for next accept attempt |
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674 end |
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675 local client_ip, client_port = client:getpeername( ) |
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676 interface._connections = interface._connections + 1 -- increase connection count |
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677 local clientinterface = handleclient( client, client_ip, client_port, interface, pattern, listener, sslctx ) |
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678 --vdebug( "client id:", clientinterface, "startssl:", startssl ) |
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680 clientinterface:starttls(sslctx, true) |
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681 else |
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682 clientinterface:_start_session( true ) |
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683 end |
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684 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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685 |
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686 client, err = server:accept() -- try to accept again |
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687 end |
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688 return EV_READ |
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689 end |
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690 |
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691 server:settimeout( 0 ) |
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692 setmetatable(interface, interface_mt) |
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694 interface:_start_session() |
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695 return interface |
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696 end |
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697 |
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698 local function addserver( addr, port, listener, pattern, sslctx, startssl ) -- TODO: check arguments |
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699 --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslctx or "nil", startssl or "nil") |
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700 if sslctx and not has_luasec then |
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701 debug "fatal error: luasec not found" |
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702 return nil, "luasec not found" |
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0d9ac472e58c
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Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
703 end |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
704 local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
705 if not server then |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
706 debug( "creating server socket on "..addr.." port "..port.." failed:", err ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
707 return nil, err |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
708 end |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
709 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
|
710 debug( "new server created with id:", tostring(interface)) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
711 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
|
712 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
713 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
714 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
|
715 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
|
716 interface:_start_connection(sslctx) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
717 return interface, client |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
718 --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
|
719 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
720 |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
721 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
|
722 if sslctx and not has_luasec then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
723 debug "need luasec, but not available" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
724 return nil, "luasec not found" |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
725 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
726 if not typ then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
727 local addrinfo, err = getaddrinfo(addr) |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
728 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
|
729 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
|
730 typ = "tcp6" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
731 else |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
732 typ = "tcp" |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
733 end |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
734 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
735 local create = socket[typ] |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
736 if type( create ) ~= "function" then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
737 return nil, "invalid socket type" |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
738 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
739 local client, err = create() -- creating new socket |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
740 if not client then |
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
741 debug( "cannot create socket:", err ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
742 return nil, err |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
743 end |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
744 client:settimeout( 0 ) -- set nonblocking |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
745 local res, err = client:connect( addr, serverport ) -- connect |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
746 if res or ( err == "timeout" ) then |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
747 local ip, port = client:getsockname( ) |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
748 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
|
749 debug( "new connection id:", interface.id ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
750 return interface, err |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
751 else |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
752 debug( "new connection failed:", err ) |
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
753 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
|
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 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
756 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
757 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
|
758 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
|
759 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
|
760 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
761 |
6850
41de00647ad3
server_event: Move local references to various functions to top of file
Kim Alvefur <zash@zash.se>
parents:
6849
diff
changeset
|
762 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
|
763 return addevent( base, ... ) |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
764 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
|
765 |
6851
1f1bed8ebc41
server_event: Remove needless scoping and indentation
Kim Alvefur <zash@zash.se>
parents:
6850
diff
changeset
|
766 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
|
767 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
|
768 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
|
769 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
|
770 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
771 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
772 end |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
773 |
2335
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
774 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
|
775 if yes then |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
776 -- Quit now |
8751
469f78fe1c3e
net.server_event: Don't close servers if just quitting the loop once
Matthew Wild <mwild1@gmail.com>
parents:
8728
diff
changeset
|
777 if yes ~= "once" then |
469f78fe1c3e
net.server_event: Don't close servers if just quitting the loop once
Matthew Wild <mwild1@gmail.com>
parents:
8728
diff
changeset
|
778 closeallservers(); |
469f78fe1c3e
net.server_event: Don't close servers if just quitting the loop once
Matthew Wild <mwild1@gmail.com>
parents:
8728
diff
changeset
|
779 end |
7336
0d9ac472e58c
server_event: Fix indentation (again)
Kim Alvefur <zash@zash.se>
parents:
7224
diff
changeset
|
780 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
|
781 end |
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
782 end |
060fb67cefd5
net.server_event: Add setquitting() function to be compatible with net.server_select
Matthew Wild <mwild1@gmail.com>
parents:
2334
diff
changeset
|
783 |
4399
1b4161970842
net.server_event, net.server_select: Fixed some global pollution.
Waqas Hussain <waqas20@gmail.com>
parents:
4377
diff
changeset
|
784 local function get_backend() |
8314
1d2149d84c72
net.server_event: Add "libevent" to backend description
Kim Alvefur <zash@zash.se>
parents:
7810
diff
changeset
|
785 return "libevent " .. base:method(); |
2340
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
786 end |
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
787 |
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
|
788 -- 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
|
789 -- 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
|
790 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
|
791 local function hook_signal(signal_num, handler) |
6856
489f4ae291bf
server_event: Remove unused argument [luacheck]
Kim Alvefur <zash@zash.se>
parents:
6855
diff
changeset
|
792 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
|
793 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
|
794 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
|
795 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
|
796 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
|
797 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
|
798 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
|
799 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
|
800 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
|
801 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
|
802 |
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
|
803 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
|
804 local sender_locked; |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5756
diff
changeset
|
805 |
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
|
806 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
|
807 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
|
808 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
|
809 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
|
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 |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5756
diff
changeset
|
812 |
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
|
813 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
|
814 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
|
815 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
|
816 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
|
817 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
|
818 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
|
819 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
|
820 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
changeset
|
821 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
|
822 |
6862
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
823 local function add_task(delay, callback) |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
824 local event_handle; |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
825 event_handle = base:addevent(nil, 0, function () |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
826 local ret = callback(socket_gettime()); |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
827 if ret then |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
828 return 0, ret; |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
829 elseif event_handle then |
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
830 return -1; |
6481
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
831 end |
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
832 end |
6862
7a81fb23de5d
server_event: Remove needless scoping around add_task
Kim Alvefur <zash@zash.se>
parents:
6861
diff
changeset
|
833 , 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
|
834 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
|
835 end |
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
836 |
8781
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
837 local function watchfd(fd, onreadable, onwriteable) |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
838 local handle = {}; |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
839 function handle:setflags(r,w) |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
840 if r ~= nil then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
841 if r and not self.wantread then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
842 self.wantread = base:addevent(fd, EV_READ, function () |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
843 onreadable(self); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
844 end); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
845 elseif not r and self.wantread then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
846 self.wantread:close(); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
847 self.wantread = nil; |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
848 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
849 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
850 if w ~= nil then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
851 if w and not self.wantwrite then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
852 self.wantwrite = base:addevent(fd, EV_WRITE, function () |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
853 onwriteable(self); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
854 end); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
855 elseif not r and self.wantread then |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
856 self.wantwrite:close(); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
857 self.wantwrite = nil; |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
858 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
859 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
860 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
861 handle:setflags(onreadable, onwriteable); |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
862 return handle; |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
863 end |
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
864 |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
865 return { |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
866 cfg = cfg, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
867 base = base, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
868 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
|
869 link = link, |
6853
a2cc477eb19b
server_event: Rename luaevent module variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents:
6852
diff
changeset
|
870 event = levent, |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
871 event_base = base, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
872 addevent = newevent, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
873 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
|
874 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
|
875 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
|
876 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
|
877 closeall = closeallservers, |
2340
b286d60cb4fc
net.server_event: Add get_backend() method
Matthew Wild <mwild1@gmail.com>
parents:
2336
diff
changeset
|
878 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
|
879 hook_signal = hook_signal, |
6481
dbc72cd1332e
Move timer code out of util.timer and into relevant net.server backends
daurnimator <quae@daurnimator.com>
parents:
6383
diff
changeset
|
880 add_task = add_task, |
8781
53178b6ba589
net.server: Add watchfd, a simple API for watching file descriptors
Kim Alvefur <zash@zash.se>
parents:
8751
diff
changeset
|
881 watchfd = watchfd, |
2318
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
882 |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
883 __NAME = SCRIPT_NAME, |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
884 __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
|
885 __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
|
886 __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
|
887 |
a831de056de3
net.server_select, net.server_event: Convert to unix line endings from Windows
Matthew Wild <mwild1@gmail.com>
parents:
2303
diff
changeset
|
888 } |