prosody
8fc3c06f922d
doc/net.server.lua

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doc/net.server.lua @ 12319:8fc3c06f922d

prosodyctl: check dns: List discovered addresses for diagnostic purposes It is very common to get the "unknown address" warning with this command, but people do not always understand it, or know how to debug it. Now we clearly show the addresses that prosodyctl discovered.
author Matthew Wild <mwild1@gmail.com>
date Wed, 02 Mar 2022 16:02:42 +0000
parent 9846:9a0da809ed4a
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1 -- Prosody IM
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2 -- Copyright (C) 2014,2016 Daurnimator
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6
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7 --luacheck: ignore
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8
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9 --[[
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10 This file is a template for writing a net.server compatible backend.
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11 ]]
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12
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13 --[[
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14 Read patterns (also called modes) can be one of:
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15 - "*a": Read as much as possible
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16 - "*l": Read until end of line
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17 ]]
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18
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19 --- Handle API
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20 local handle_mt = {};
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21 local handle_methods = {};
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22 handle_mt.__index = handle_methods;
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23
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24 function handle_methods:set_mode(new_pattern)
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25 end
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26
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27 function handle_methods:setlistener(listeners)
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28 end
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29
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30 function handle_methods:setoption(option, value)
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31 end
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33 function handle_methods:ip()
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34 end
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35
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36 function handle_methods:starttls(sslctx)
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37 end
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38
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39 function handle_methods:write(data)
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40 end
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41
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42 function handle_methods:close()
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43 end
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44
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45 function handle_methods:pause()
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46 end
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47
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48 function handle_methods:resume()
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49 end
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50
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51 --[[
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52 Returns
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53 - socket: the socket object underlying this handle
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54 ]]
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55 function handle_methods:socket()
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56 end
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57
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58 --[[
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59 Returns
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60 - boolean: if an ssl context has been set on this handle
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61 ]]
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62 function handle_methods:ssl()
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63 end
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64
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65
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66 --- Listeners API
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67 local listeners = {}
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68
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69 --[[ connect
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70 Called when a client socket has established a connection with it's peer
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72 function listeners.onconnect(handle)
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73 end
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74
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75 --[[ incoming
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76 Called when data is received
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77 If reading data failed this will be called with `nil, "error message"`
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79 function listeners.onincoming(handle, buff, err)
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80 end
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81
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82 --[[ status
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83 Known statuses:
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84 - "ssl-handshake-complete"
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86 function listeners.onstatus(handle, status)
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87 end
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88
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89 --[[ disconnect
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90 Called when the peer has closed the connection
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91 ]]
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92 function listeners.ondisconnect(handle)
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93 end
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94
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95 --[[ drain
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96 Called when the handle's write buffer is empty
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97 ]]
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98 function listeners.ondrain(handle)
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99 end
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100
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101 --[[ readtimeout
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102 Called when a socket inactivity timeout occurs
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103 ]]
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104 function listeners.onreadtimeout(handle)
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105 end
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106
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107 --[[ detach: Called when other listeners are going to be removed
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108 Allows for clean-up
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110 function listeners.ondetach(handle)
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111 end
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112
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113 --- Top level functions
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114
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115 --[[ Returns the syscall level event mechanism in use.
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116
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117 Returns:
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118 - backend: e.g. "select", "epoll"
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120 local function get_backend()
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121 end
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122
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123 --[[ Starts the event loop.
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124
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125 Returns:
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126 - "quitting"
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127 ]]
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128 local function loop()
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129 end
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130
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131 --[[ Stop a running loop()
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132 ]]
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133 local function setquitting(quit)
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134 end
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135
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136
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137 --[[ Links to two handles together, so anything written to one is piped to the other
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138
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139 Arguments:
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140 - sender, receiver: handles to link
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141 - buffersize: maximum #bytes until sender will be locked
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142 ]]
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143 local function link(sender, receiver, buffersize)
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144 end
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145
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146 --[[ Binds and listens on the given address and port
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147 If `sslctx` is given, the connecting clients will have to negotiate an SSL session
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148
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149 Arguments:
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150 - address: address to bind to, may be "*" to bind all addresses. will be resolved if it is a string.
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151 - port: port to bind (as number)
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152 - listeners: a table of listeners
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153 - pattern: the read pattern
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154 - sslctx: is a valid luasec constructor
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155
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156 Returns:
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157 - handle
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158 - nil, "an error message": on failure (e.g. out of file descriptors)
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159 ]]
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160 local function addserver(address, port, listeners, pattern, sslctx)
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161 end
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162
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163 --[[ Binds and listens on the given address and port
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164 Mostly the same as addserver but with all optional arguments in a table
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165
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166 Arguments:
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167 - address: address to bind to, may be "*" to bind all addresses. will be resolved if it is a string.
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168 - port: port to bind (as number)
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169 - listeners: a table of listeners
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170 - config: table of extra settings
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171 - read_size: the amount of bytes to read or a read pattern
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172 - tls_ctx: is a valid luasec constructor
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173 - tls_direct: boolean true for direct TLS, false (or nil) for starttls
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174
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175 Returns:
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176 - handle
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177 - nil, "an error message": on failure (e.g. out of file descriptors)
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178 ]]
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179 local function listen(address, port, listeners, config)
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180 end
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181
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182
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183 --[[ Wraps a lua-socket socket client socket in a handle.
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184 The socket must be already connected to the remote end.
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185 If `sslctx` is given, a SSL session will be negotiated before listeners are called.
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186
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187 Arguments:
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188 - socket: the lua-socket object to wrap
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189 - ip: returned by `handle:ip()`
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190 - port:
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191 - listeners: a table of listeners
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192 - pattern: the read pattern
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193 - sslctx: is a valid luasec constructor
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194 - typ: the socket type, one of:
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195 - "tcp"
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196 - "tcp6"
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197 - "udp"
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198
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199 Returns:
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200 - handle, socket
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201 - nil, "an error message": on failure (e.g. )
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202 ]]
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203 local function wrapclient(socket, ip, serverport, listeners, pattern, sslctx)
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204 end
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205
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206 --[[ Connects to the given address and port
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207 If `sslctx` is given, a SSL session will be negotiated before listeners are called.
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208
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209 Arguments:
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210 - address: address to connect to. will be resolved if it is a string.
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211 - port: port to connect to (as number)
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212 - listeners: a table of listeners
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213 - pattern: the read pattern
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214 - sslctx: is a valid luasec constructor
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215 - typ: the socket type, one of:
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216 - "tcp"
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217 - "tcp6"
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218 - "udp"
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219
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220 Returns:
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221 - handle
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222 - nil, "an error message": on failure (e.g. out of file descriptors)
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223 ]]
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224 local function addclient(address, port, listeners, pattern, sslctx, typ)
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225 end
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226
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227 --[[ Close all handles
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228 ]]
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229 local function closeall()
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230 end
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231
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232 --[[ The callback should be called after `delay` seconds.
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233 The callback should be called with the time at the point of firing.
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234 If the callback returns a number, it should be called again after that many seconds.
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235
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236 Arguments:
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237 - delay: number of seconds to wait
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238 - callback: function to call.
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239 ]]
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240 local function add_task(delay, callback)
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241 end
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242
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243 --[[ Adds a handler for when a signal is fired.
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244 Optional to implement
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245 callback does not take any arguments
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246
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247 Arguments:
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248 - signal_id: the signal id (as number) to listen for
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249 - handler: callback
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250 ]]
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251 local function hook_signal(signal_id, handler)
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252 end
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253
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254 --[[ Adds a low-level FD watcher
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255 Arguments:
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256 - fd_number: A non-negative integer representing a file descriptor or
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257 object with a :getfd() method returning one
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258 - on_readable: Optional callback for when the FD is readable
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259 - on_writable: Optional callback for when the FD is writable
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260
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261 Returns:
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262 - net.server handle
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263 ]]
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264 local function watchfd(fd_number, on_readable, on_writable)
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265 end
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266
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267 return {
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268 get_backend = get_backend;
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269 loop = loop;
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270 setquitting = setquitting;
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271 link = link;
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272 addserver = addserver;
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273 wrapclient = wrapclient;
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274 addclient = addclient;
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275 closeall = closeall;
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276 hook_signal = hook_signal;
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53178b6ba589 net.server: Add watchfd, a simple API for watching file descriptors
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277 watchfd = watchfd;
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9a0da809ed4a doc/net.server: Document the new server.listen() API
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278 listen = listen;
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parents:
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279 }