prosody
1f1bed8ebc41
net/server_event.lua

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net/server_event.lua @ 6851:1f1bed8ebc41

server_event: Remove needless scoping and indentation
author Kim Alvefur <zash@zash.se>
date Fri, 25 Sep 2015 17:12:55 +0200
parent 6850:41de00647ad3
child 6852:626d8152b1ad
comparison
equal deleted inserted replaced
6850:41de00647ad3 6851:1f1bed8ebc41
87 local EV_READWRITE = bitor( EV_READ, EV_WRITE ) 87 local EV_READWRITE = bitor( EV_READ, EV_WRITE )
88 88
89 local interfacelist = { } 89 local interfacelist = { }
90 90
91 -- Client interface methods 91 -- Client interface methods
92 local interface_mt 92 local interface_mt = {}; interface_mt.__index = interface_mt;
93 do 93
94 interface_mt = {}; interface_mt.__index = interface_mt; 94 -- Private methods
95 95 function interface_mt:_close()
96 96 return self:_destroy();
97 -- Private methods 97 end
98 function interface_mt:_close() 98
99 return self:_destroy(); 99 function interface_mt:_start_connection(plainssl) -- should be called from addclient
100 end 100 local callback = function( event )
101 101 if EV_TIMEOUT == event then -- timeout during connection
102 function interface_mt:_start_connection(plainssl) -- should be called from addclient 102 self.fatalerror = "connection timeout"
103 local callback = function( event ) 103 self:ontimeout() -- call timeout listener
104 if EV_TIMEOUT == event then -- timeout during connection 104 self:_close()
105 self.fatalerror = "connection timeout" 105 debug( "new connection failed. id:", self.id, "error:", self.fatalerror )
106 self:ontimeout() -- call timeout listener 106 else
107 self:_close() 107 if plainssl and has_luasec then -- start ssl session
108 debug( "new connection failed. id:", self.id, "error:", self.fatalerror ) 108 self:starttls(self._sslctx, true)
109 else 109 else -- normal connection
110 if plainssl and has_luasec then -- start ssl session 110 self:_start_session(true)
111 self:starttls(self._sslctx, true)
112 else -- normal connection
113 self:_start_session(true)
114 end
115 debug( "new connection established. id:", self.id )
116 end 111 end
117 self.eventconnect = nil 112 debug( "new connection established. id:", self.id )
118 return -1 113 end
119 end 114 self.eventconnect = nil
120 self.eventconnect = addevent( base, self.conn, EV_WRITE, callback, cfg.CONNECT_TIMEOUT ) 115 return -1
121 return true 116 end
122 end 117 self.eventconnect = addevent( base, self.conn, EV_WRITE, callback, cfg.CONNECT_TIMEOUT )
123 function interface_mt:_start_session(call_onconnect) -- new session, for example after startssl
124 if self.type == "client" then
125 local callback = function( )
126 self:_lock( false, false, false )
127 --vdebug( "start listening on client socket with id:", self.id )
128 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback
129 if call_onconnect then
130 self:onconnect()
131 end
132 self.eventsession = nil
133 return -1
134 end
135 self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 )
136 else
137 self:_lock( false )
138 --vdebug( "start listening on server socket with id:", self.id )
139 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback ) -- register callback
140 end
141 return true 118 return true
142 end 119 end
143 function interface_mt:_start_ssl(call_onconnect) -- old socket will be destroyed, therefore we have to close read/write events first 120 function interface_mt:_start_session(call_onconnect) -- new session, for example after startssl
144 --vdebug( "starting ssl session with client id:", self.id ) 121 if self.type == "client" then
145 local _ 122 local callback = function( )
146 _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks! 123 self:_lock( false, false, false )
147 _ = self.eventwrite and self.eventwrite:close( ) 124 --vdebug( "start listening on client socket with id:", self.id )
148 self.eventread, self.eventwrite = nil, nil 125 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback
149 local err 126 if call_onconnect then
150 self.conn, err = ssl.wrap( self.conn, self._sslctx ) 127 self:onconnect()
151 if err then 128 end
152 self.fatalerror = err 129 self.eventsession = nil
153 self.conn = nil -- cannot be used anymore 130 return -1
154 if call_onconnect then 131 end
155 self.ondisconnect = nil -- dont call this when client isnt really connected 132 self.eventsession = addevent( base, nil, EV_TIMEOUT, callback, 0 )
156 end 133 else
157 self:_close() 134 self:_lock( false )
158 debug( "fatal error while ssl wrapping:", err ) 135 --vdebug( "start listening on server socket with id:", self.id )
159 return false 136 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback ) -- register callback
160 end 137 end
161 self.conn:settimeout( 0 ) -- set non blocking 138 return true
162 local handshakecallback = coroutine_wrap( 139 end
163 function( event ) 140 function interface_mt:_start_ssl(call_onconnect) -- old socket will be destroyed, therefore we have to close read/write events first
164 local _, err 141 --vdebug( "starting ssl session with client id:", self.id )
165 local attempt = 0 142 local _
166 local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPTS 143 _ = self.eventread and self.eventread:close( ) -- close events; this must be called outside of the event callbacks!
167 while attempt < maxattempt do -- no endless loop 144 _ = self.eventwrite and self.eventwrite:close( )
168 attempt = attempt + 1 145 self.eventread, self.eventwrite = nil, nil
169 debug( "ssl handshake of client with id:"..tostring(self)..", attempt:"..attempt ) 146 local err
170 if attempt > maxattempt then 147 self.conn, err = ssl.wrap( self.conn, self._sslctx )
171 self.fatalerror = "max handshake attempts exceeded" 148 if err then
172 elseif EV_TIMEOUT == event then 149 self.fatalerror = err
173 self.fatalerror = "timeout during handshake" 150 self.conn = nil -- cannot be used anymore
174 else 151 if call_onconnect then
175 _, err = self.conn:dohandshake( ) 152 self.ondisconnect = nil -- dont call this when client isnt really connected
176 if not err then 153 end
177 self:_lock( false, false, false ) -- unlock the interface; sending, closing etc allowed 154 self:_close()
178 self.send = self.conn.send -- caching table lookups with new client object 155 debug( "fatal error while ssl wrapping:", err )
179 self.receive = self.conn.receive 156 return false
180 if not call_onconnect then -- trigger listener 157 end
181 self:onstatus("ssl-handshake-complete"); 158 self.conn:settimeout( 0 ) -- set non blocking
182 end 159 local handshakecallback = coroutine_wrap(
183 self:_start_session( call_onconnect ) 160 function( event )
184 debug( "ssl handshake done" ) 161 local _, err
185 self.eventhandshake = nil 162 local attempt = 0
186 return -1 163 local maxattempt = cfg.MAX_HANDSHAKE_ATTEMPTS
164 while attempt < maxattempt do -- no endless loop
165 attempt = attempt + 1
166 debug( "ssl handshake of client with id:"..tostring(self)..", attempt:"..attempt )
167 if attempt > maxattempt then
168 self.fatalerror = "max handshake attempts exceeded"
169 elseif EV_TIMEOUT == event then
170 self.fatalerror = "timeout during handshake"
171 else
172 _, err = self.conn:dohandshake( )
173 if not err then
174 self:_lock( false, false, false ) -- unlock the interface; sending, closing etc allowed
175 self.send = self.conn.send -- caching table lookups with new client object
176 self.receive = self.conn.receive
177 if not call_onconnect then -- trigger listener
178 self:onstatus("ssl-handshake-complete");
187 end 179 end
188 if err == "wantwrite" then 180 self:_start_session( call_onconnect )
189 event = EV_WRITE 181 debug( "ssl handshake done" )
190 elseif err == "wantread" then
191 event = EV_READ
192 else
193 debug( "ssl handshake error:", err )
194 self.fatalerror = err
195 end
196 end
197 if self.fatalerror then
198 if call_onconnect then
199 self.ondisconnect = nil -- dont call this when client isnt really connected
200 end
201 self:_close()
202 debug( "handshake failed because:", self.fatalerror )
203 self.eventhandshake = nil 182 self.eventhandshake = nil
204 return -1 183 return -1
205 end 184 end
206 event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT ) -- yield this monster... 185 if err == "wantwrite" then
186 event = EV_WRITE
187 elseif err == "wantread" then
188 event = EV_READ
189 else
190 debug( "ssl handshake error:", err )
191 self.fatalerror = err
192 end
207 end 193 end
208 end 194 if self.fatalerror then
209 ) 195 if call_onconnect then
210 debug "starting handshake..." 196 self.ondisconnect = nil -- dont call this when client isnt really connected
211 self:_lock( false, true, true ) -- unlock read/write events, but keep interface locked
212 self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT )
213 return true
214 end
215 function interface_mt:_destroy() -- close this interface + events and call last listener
216 debug( "closing client with id:", self.id, self.fatalerror )
217 self:_lock( true, true, true ) -- first of all, lock the interface to avoid further actions
218 local _
219 _ = self.eventread and self.eventread:close( )
220 if self.type == "client" then
221 _ = self.eventwrite and self.eventwrite:close( )
222 _ = self.eventhandshake and self.eventhandshake:close( )
223 _ = self.eventstarthandshake and self.eventstarthandshake:close( )
224 _ = self.eventconnect and self.eventconnect:close( )
225 _ = self.eventsession and self.eventsession:close( )
226 _ = self.eventwritetimeout and self.eventwritetimeout:close( )
227 _ = self.eventreadtimeout and self.eventreadtimeout:close( )
228 _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) -- call ondisconnect listener (wont be the case if handshake failed on connect)
229 _ = self.conn and self.conn:close( ) -- close connection
230 _ = self._server and self._server:counter(-1);
231 self.eventread, self.eventwrite = nil, nil
232 self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil
233 self.readcallback, self.writecallback = nil, nil
234 else
235 self.conn:close( )
236 self.eventread, self.eventclose = nil, nil
237 self.interface, self.readcallback = nil, nil
238 end
239 interfacelist[ self ] = nil
240 return true
241 end
242
243 function interface_mt:_lock(nointerface, noreading, nowriting) -- lock or unlock this interface or events
244 self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting
245 return nointerface, noreading, nowriting
246 end
247
248 --TODO: Deprecate
249 function interface_mt:lock_read(switch)
250 if switch then
251 return self:pause();
252 else
253 return self:resume();
254 end
255 end
256
257 function interface_mt:pause()
258 return self:_lock(self.nointerface, true, self.nowriting);
259 end
260
261 function interface_mt:resume()
262 self:_lock(self.nointerface, false, self.nowriting);
263 if not self.eventread then
264 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback
265 end
266 end
267
268 function interface_mt:counter(c)
269 if c then
270 self._connections = self._connections + c
271 end
272 return self._connections
273 end
274
275 -- Public methods
276 function interface_mt:write(data)
277 if self.nowriting then return nil, "locked" end
278 --vdebug( "try to send data to client, id/data:", self.id, data )
279 data = tostring( data )
280 local len = #data
281 local total = len + self.writebufferlen
282 if total > cfg.MAX_SEND_LENGTH then -- check buffer length
283 local err = "send buffer exceeded"
284 debug( "error:", err ) -- to much, check your app
285 return nil, err
286 end
287 t_insert(self.writebuffer, data) -- new buffer
288 self.writebufferlen = total
289 if not self.eventwrite then -- register new write event
290 --vdebug( "register new write event" )
291 self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT )
292 end
293 return true
294 end
295 function interface_mt:close()
296 if self.nointerface then return nil, "locked"; end
297 debug( "try to close client connection with id:", self.id )
298 if self.type == "client" then
299 self.fatalerror = "client to close"
300 if self.eventwrite then -- wait for incomplete write request
301 self:_lock( true, true, false )
302 debug "closing delayed until writebuffer is empty"
303 return nil, "writebuffer not empty, waiting"
304 else -- close now
305 self:_lock( true, true, true )
306 self:_close()
307 return true
308 end
309 else
310 debug( "try to close server with id:", tostring(self.id))
311 self.fatalerror = "server to close"
312 self:_lock( true )
313 self:_close( 0 )
314 return true
315 end
316 end
317
318 function interface_mt:socket()
319 return self.conn
320 end
321
322 function interface_mt:server()
323 return self._server or self;
324 end
325
326 function interface_mt:port()
327 return self._port
328 end
329
330 function interface_mt:serverport()
331 return self._serverport
332 end
333
334 function interface_mt:ip()
335 return self._ip
336 end
337
338 function interface_mt:ssl()
339 return self._usingssl
340 end
341 interface_mt.clientport = interface_mt.port -- COMPAT server_select
342
343 function interface_mt:type()
344 return self._type or "client"
345 end
346
347 function interface_mt:connections()
348 return self._connections
349 end
350
351 function interface_mt:address()
352 return self.addr
353 end
354
355 function interface_mt:set_sslctx(sslctx)
356 self._sslctx = sslctx;
357 if sslctx then
358 self.starttls = nil; -- use starttls() of interface_mt
359 else
360 self.starttls = false; -- prevent starttls()
361 end
362 end
363
364 function interface_mt:set_mode(pattern)
365 if pattern then
366 self._pattern = pattern;
367 end
368 return self._pattern;
369 end
370
371 function interface_mt:set_send(new_send)
372 -- No-op, we always use the underlying connection's send
373 end
374
375 function interface_mt:starttls(sslctx, call_onconnect)
376 debug( "try to start ssl at client id:", self.id )
377 local err
378 self._sslctx = sslctx;
379 if self._usingssl then -- startssl was already called
380 err = "ssl already active"
381 end
382 if err then
383 debug( "error:", err )
384 return nil, err
385 end
386 self._usingssl = true
387 self.startsslcallback = function( ) -- we have to start the handshake outside of a read/write event
388 self.startsslcallback = nil
389 self:_start_ssl(call_onconnect);
390 self.eventstarthandshake = nil
391 return -1
392 end
393 if not self.eventwrite then
394 self:_lock( true, true, true ) -- lock the interface, to not disturb the handshake
395 self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 ) -- add event to start handshake
396 else -- wait until writebuffer is empty
397 self:_lock( true, true, false )
398 debug "ssl session delayed until writebuffer is empty..."
399 end
400 self.starttls = false;
401 return true
402 end
403
404 function interface_mt:setoption(option, value)
405 if self.conn.setoption then
406 return self.conn:setoption(option, value);
407 end
408 return false, "setoption not implemented";
409 end
410
411 function interface_mt:setlistener(listener)
412 self:ondetach(); -- Notify listener that it is no longer responsible for this connection
413 self.onconnect, self.ondisconnect, self.onincoming, self.ontimeout,
414 self.onreadtimeout, self.onstatus, self.ondetach
415 = listener.onconnect, listener.ondisconnect, listener.onincoming, listener.ontimeout,
416 listener.onreadtimeout, listener.onstatus, listener.ondetach;
417 end
418
419 -- Stub handlers
420 function interface_mt:onconnect()
421 end
422 function interface_mt:onincoming()
423 end
424 function interface_mt:ondisconnect()
425 end
426 function interface_mt:ontimeout()
427 end
428 function interface_mt:onreadtimeout()
429 self.fatalerror = "timeout during receiving"
430 debug( "connection failed:", self.fatalerror )
431 self:_close()
432 self.eventread = nil
433 end
434 function interface_mt:ondrain()
435 end
436 function interface_mt:ondetach()
437 end
438 function interface_mt:onstatus()
439 end
440 end
441
442 -- End of client interface methods
443
444 local handleclient;
445 do
446 function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface
447 --vdebug("creating client interfacce...")
448 local interface = {
449 type = "client";
450 conn = client;
451 currenttime = socket_gettime( ); -- safe the origin
452 writebuffer = {}; -- writebuffer
453 writebufferlen = 0; -- length of writebuffer
454 send = client.send; -- caching table lookups
455 receive = client.receive;
456 onconnect = listener.onconnect; -- will be called when client disconnects
457 ondisconnect = listener.ondisconnect; -- will be called when client disconnects
458 onincoming = listener.onincoming; -- will be called when client sends data
459 ontimeout = listener.ontimeout; -- called when fatal socket timeout occurs
460 onreadtimeout = listener.onreadtimeout; -- called when socket inactivity timeout occurs
461 ondrain = listener.ondrain; -- called when writebuffer is empty
462 ondetach = listener.ondetach; -- called when disassociating this listener from this connection
463 onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS)
464 eventread = false, eventwrite = false, eventclose = false,
465 eventhandshake = false, eventstarthandshake = false; -- event handler
466 eventconnect = false, eventsession = false; -- more event handler...
467 eventwritetimeout = false; -- even more event handler...
468 eventreadtimeout = false;
469 fatalerror = false; -- error message
470 writecallback = false; -- will be called on write events
471 readcallback = false; -- will be called on read events
472 nointerface = true; -- lock/unlock parameter of this interface
473 noreading = false, nowriting = false; -- locks of the read/writecallback
474 startsslcallback = false; -- starting handshake callback
475 position = false; -- position of client in interfacelist
476
477 -- Properties
478 _ip = ip, _port = port, _server = server, _pattern = pattern,
479 _serverport = (server and server:port() or nil),
480 _sslctx = sslctx; -- parameters
481 _usingssl = false; -- client is using ssl;
482 }
483 if not has_luasec then interface.starttls = false; end
484 interface.id = tostring(interface):match("%x+$");
485 interface.writecallback = function( event ) -- called on write events
486 --vdebug( "new client write event, id/ip/port:", interface, ip, port )
487 if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then -- leave this event
488 --vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror )
489 interface.eventwrite = false
490 return -1
491 end
492 if EV_TIMEOUT == event then -- took too long to write some data to socket -> disconnect
493 interface.fatalerror = "timeout during writing"
494 debug( "writing failed:", interface.fatalerror )
495 interface:_close()
496 interface.eventwrite = false
497 return -1
498 else -- can write :)
499 if interface._usingssl then -- handle luasec
500 if interface.eventreadtimeout then -- we have to read first
501 local ret = interface.readcallback( ) -- call readcallback
502 --vdebug( "tried to read in writecallback, result:", ret )
503 end
504 if interface.eventwritetimeout then -- luasec only
505 interface.eventwritetimeout:close( ) -- first we have to close timeout event which where regged after a wantread error
506 interface.eventwritetimeout = false
507 end
508 end
509 interface.writebuffer = { t_concat(interface.writebuffer) }
510 local succ, err, byte = interface.conn:send( interface.writebuffer[1], 1, interface.writebufferlen )
511 --vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte )
512 if succ then -- writing succesful
513 interface.writebuffer[1] = nil
514 interface.writebufferlen = 0
515 interface:ondrain();
516 if interface.fatalerror then
517 debug "closing client after writing"
518 interface:_close() -- close interface if needed
519 elseif interface.startsslcallback then -- start ssl connection if needed
520 debug "starting ssl handshake after writing"
521 interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 )
522 elseif interface.eventreadtimeout then
523 return EV_WRITE, EV_TIMEOUT
524 end
525 interface.eventwrite = nil
526 return -1
527 elseif byte and (err == "timeout" or err == "wantwrite") then -- want write again
528 --vdebug( "writebuffer is not empty:", err )
529 interface.writebuffer[1] = s_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer
530 interface.writebufferlen = interface.writebufferlen - byte
531 if "wantread" == err then -- happens only with luasec
532 local callback = function( )
533 interface:_close()
534 interface.eventwritetimeout = nil
535 return -1;
536 end 197 end
537 interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT ) -- reg a new timeout event 198 self:_close()
538 debug( "wantread during write attempt, reg it in readcallback but dont know what really happens next..." ) 199 debug( "handshake failed because:", self.fatalerror )
539 -- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent 200 self.eventhandshake = nil
540 return -1 201 return -1
541 end 202 end
542 return EV_WRITE, cfg.WRITE_TIMEOUT 203 event = coroutine_yield( event, cfg.HANDSHAKE_TIMEOUT ) -- yield this monster...
543 else -- connection was closed during writing or fatal error 204 end
544 interface.fatalerror = err or "fatal error" 205 end
545 debug( "connection failed in write event:", interface.fatalerror ) 206 )
546 interface:_close() 207 debug "starting handshake..."
547 interface.eventwrite = nil 208 self:_lock( false, true, true ) -- unlock read/write events, but keep interface locked
209 self.eventhandshake = addevent( base, self.conn, EV_READWRITE, handshakecallback, cfg.HANDSHAKE_TIMEOUT )
210 return true
211 end
212 function interface_mt:_destroy() -- close this interface + events and call last listener
213 debug( "closing client with id:", self.id, self.fatalerror )
214 self:_lock( true, true, true ) -- first of all, lock the interface to avoid further actions
215 local _
216 _ = self.eventread and self.eventread:close( )
217 if self.type == "client" then
218 _ = self.eventwrite and self.eventwrite:close( )
219 _ = self.eventhandshake and self.eventhandshake:close( )
220 _ = self.eventstarthandshake and self.eventstarthandshake:close( )
221 _ = self.eventconnect and self.eventconnect:close( )
222 _ = self.eventsession and self.eventsession:close( )
223 _ = self.eventwritetimeout and self.eventwritetimeout:close( )
224 _ = self.eventreadtimeout and self.eventreadtimeout:close( )
225 _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) -- call ondisconnect listener (wont be the case if handshake failed on connect)
226 _ = self.conn and self.conn:close( ) -- close connection
227 _ = self._server and self._server:counter(-1);
228 self.eventread, self.eventwrite = nil, nil
229 self.eventstarthandshake, self.eventhandshake, self.eventclose = nil, nil, nil
230 self.readcallback, self.writecallback = nil, nil
231 else
232 self.conn:close( )
233 self.eventread, self.eventclose = nil, nil
234 self.interface, self.readcallback = nil, nil
235 end
236 interfacelist[ self ] = nil
237 return true
238 end
239
240 function interface_mt:_lock(nointerface, noreading, nowriting) -- lock or unlock this interface or events
241 self.nointerface, self.noreading, self.nowriting = nointerface, noreading, nowriting
242 return nointerface, noreading, nowriting
243 end
244
245 --TODO: Deprecate
246 function interface_mt:lock_read(switch)
247 if switch then
248 return self:pause();
249 else
250 return self:resume();
251 end
252 end
253
254 function interface_mt:pause()
255 return self:_lock(self.nointerface, true, self.nowriting);
256 end
257
258 function interface_mt:resume()
259 self:_lock(self.nointerface, false, self.nowriting);
260 if not self.eventread then
261 self.eventread = addevent( base, self.conn, EV_READ, self.readcallback, cfg.READ_TIMEOUT ); -- register callback
262 end
263 end
264
265 function interface_mt:counter(c)
266 if c then
267 self._connections = self._connections + c
268 end
269 return self._connections
270 end
271
272 -- Public methods
273 function interface_mt:write(data)
274 if self.nowriting then return nil, "locked" end
275 --vdebug( "try to send data to client, id/data:", self.id, data )
276 data = tostring( data )
277 local len = #data
278 local total = len + self.writebufferlen
279 if total > cfg.MAX_SEND_LENGTH then -- check buffer length
280 local err = "send buffer exceeded"
281 debug( "error:", err ) -- to much, check your app
282 return nil, err
283 end
284 t_insert(self.writebuffer, data) -- new buffer
285 self.writebufferlen = total
286 if not self.eventwrite then -- register new write event
287 --vdebug( "register new write event" )
288 self.eventwrite = addevent( base, self.conn, EV_WRITE, self.writecallback, cfg.WRITE_TIMEOUT )
289 end
290 return true
291 end
292 function interface_mt:close()
293 if self.nointerface then return nil, "locked"; end
294 debug( "try to close client connection with id:", self.id )
295 if self.type == "client" then
296 self.fatalerror = "client to close"
297 if self.eventwrite then -- wait for incomplete write request
298 self:_lock( true, true, false )
299 debug "closing delayed until writebuffer is empty"
300 return nil, "writebuffer not empty, waiting"
301 else -- close now
302 self:_lock( true, true, true )
303 self:_close()
304 return true
305 end
306 else
307 debug( "try to close server with id:", tostring(self.id))
308 self.fatalerror = "server to close"
309 self:_lock( true )
310 self:_close( 0 )
311 return true
312 end
313 end
314
315 function interface_mt:socket()
316 return self.conn
317 end
318
319 function interface_mt:server()
320 return self._server or self;
321 end
322
323 function interface_mt:port()
324 return self._port
325 end
326
327 function interface_mt:serverport()
328 return self._serverport
329 end
330
331 function interface_mt:ip()
332 return self._ip
333 end
334
335 function interface_mt:ssl()
336 return self._usingssl
337 end
338 interface_mt.clientport = interface_mt.port -- COMPAT server_select
339
340 function interface_mt:type()
341 return self._type or "client"
342 end
343
344 function interface_mt:connections()
345 return self._connections
346 end
347
348 function interface_mt:address()
349 return self.addr
350 end
351
352 function interface_mt:set_sslctx(sslctx)
353 self._sslctx = sslctx;
354 if sslctx then
355 self.starttls = nil; -- use starttls() of interface_mt
356 else
357 self.starttls = false; -- prevent starttls()
358 end
359 end
360
361 function interface_mt:set_mode(pattern)
362 if pattern then
363 self._pattern = pattern;
364 end
365 return self._pattern;
366 end
367
368 function interface_mt:set_send(new_send)
369 -- No-op, we always use the underlying connection's send
370 end
371
372 function interface_mt:starttls(sslctx, call_onconnect)
373 debug( "try to start ssl at client id:", self.id )
374 local err
375 self._sslctx = sslctx;
376 if self._usingssl then -- startssl was already called
377 err = "ssl already active"
378 end
379 if err then
380 debug( "error:", err )
381 return nil, err
382 end
383 self._usingssl = true
384 self.startsslcallback = function( ) -- we have to start the handshake outside of a read/write event
385 self.startsslcallback = nil
386 self:_start_ssl(call_onconnect);
387 self.eventstarthandshake = nil
388 return -1
389 end
390 if not self.eventwrite then
391 self:_lock( true, true, true ) -- lock the interface, to not disturb the handshake
392 self.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, self.startsslcallback, 0 ) -- add event to start handshake
393 else -- wait until writebuffer is empty
394 self:_lock( true, true, false )
395 debug "ssl session delayed until writebuffer is empty..."
396 end
397 self.starttls = false;
398 return true
399 end
400
401 function interface_mt:setoption(option, value)
402 if self.conn.setoption then
403 return self.conn:setoption(option, value);
404 end
405 return false, "setoption not implemented";
406 end
407
408 function interface_mt:setlistener(listener)
409 self:ondetach(); -- Notify listener that it is no longer responsible for this connection
410 self.onconnect, self.ondisconnect, self.onincoming, self.ontimeout,
411 self.onreadtimeout, self.onstatus, self.ondetach
412 = listener.onconnect, listener.ondisconnect, listener.onincoming, listener.ontimeout,
413 listener.onreadtimeout, listener.onstatus, listener.ondetach;
414 end
415
416 -- Stub handlers
417 function interface_mt:onconnect()
418 end
419 function interface_mt:onincoming()
420 end
421 function interface_mt:ondisconnect()
422 end
423 function interface_mt:ontimeout()
424 end
425 function interface_mt:onreadtimeout()
426 self.fatalerror = "timeout during receiving"
427 debug( "connection failed:", self.fatalerror )
428 self:_close()
429 self.eventread = nil
430 end
431 function interface_mt:ondrain()
432 end
433 function interface_mt:ondetach()
434 end
435 function interface_mt:onstatus()
436 end
437
438 -- End of client interface methods
439
440 local function handleclient( client, ip, port, server, pattern, listener, sslctx ) -- creates an client interface
441 --vdebug("creating client interfacce...")
442 local interface = {
443 type = "client";
444 conn = client;
445 currenttime = socket_gettime( ); -- safe the origin
446 writebuffer = {}; -- writebuffer
447 writebufferlen = 0; -- length of writebuffer
448 send = client.send; -- caching table lookups
449 receive = client.receive;
450 onconnect = listener.onconnect; -- will be called when client disconnects
451 ondisconnect = listener.ondisconnect; -- will be called when client disconnects
452 onincoming = listener.onincoming; -- will be called when client sends data
453 ontimeout = listener.ontimeout; -- called when fatal socket timeout occurs
454 onreadtimeout = listener.onreadtimeout; -- called when socket inactivity timeout occurs
455 ondrain = listener.ondrain; -- called when writebuffer is empty
456 ondetach = listener.ondetach; -- called when disassociating this listener from this connection
457 onstatus = listener.onstatus; -- called for status changes (e.g. of SSL/TLS)
458 eventread = false, eventwrite = false, eventclose = false,
459 eventhandshake = false, eventstarthandshake = false; -- event handler
460 eventconnect = false, eventsession = false; -- more event handler...
461 eventwritetimeout = false; -- even more event handler...
462 eventreadtimeout = false;
463 fatalerror = false; -- error message
464 writecallback = false; -- will be called on write events
465 readcallback = false; -- will be called on read events
466 nointerface = true; -- lock/unlock parameter of this interface
467 noreading = false, nowriting = false; -- locks of the read/writecallback
468 startsslcallback = false; -- starting handshake callback
469 position = false; -- position of client in interfacelist
470
471 -- Properties
472 _ip = ip, _port = port, _server = server, _pattern = pattern,
473 _serverport = (server and server:port() or nil),
474 _sslctx = sslctx; -- parameters
475 _usingssl = false; -- client is using ssl;
476 }
477 if not has_luasec then interface.starttls = false; end
478 interface.id = tostring(interface):match("%x+$");
479 interface.writecallback = function( event ) -- called on write events
480 --vdebug( "new client write event, id/ip/port:", interface, ip, port )
481 if interface.nowriting or ( interface.fatalerror and ( "client to close" ~= interface.fatalerror ) ) then -- leave this event
482 --vdebug( "leaving this event because:", interface.nowriting or interface.fatalerror )
483 interface.eventwrite = false
484 return -1
485 end
486 if EV_TIMEOUT == event then -- took too long to write some data to socket -> disconnect
487 interface.fatalerror = "timeout during writing"
488 debug( "writing failed:", interface.fatalerror )
489 interface:_close()
490 interface.eventwrite = false
491 return -1
492 else -- can write :)
493 if interface._usingssl then -- handle luasec
494 if interface.eventreadtimeout then -- we have to read first
495 local ret = interface.readcallback( ) -- call readcallback
496 --vdebug( "tried to read in writecallback, result:", ret )
497 end
498 if interface.eventwritetimeout then -- luasec only
499 interface.eventwritetimeout:close( ) -- first we have to close timeout event which where regged after a wantread error
500 interface.eventwritetimeout = false
501 end
502 end
503 interface.writebuffer = { t_concat(interface.writebuffer) }
504 local succ, err, byte = interface.conn:send( interface.writebuffer[1], 1, interface.writebufferlen )
505 --vdebug( "write data:", interface.writebuffer, "error:", err, "part:", byte )
506 if succ then -- writing succesful
507 interface.writebuffer[1] = nil
508 interface.writebufferlen = 0
509 interface:ondrain();
510 if interface.fatalerror then
511 debug "closing client after writing"
512 interface:_close() -- close interface if needed
513 elseif interface.startsslcallback then -- start ssl connection if needed
514 debug "starting ssl handshake after writing"
515 interface.eventstarthandshake = addevent( base, nil, EV_TIMEOUT, interface.startsslcallback, 0 )
516 elseif interface.eventreadtimeout then
517 return EV_WRITE, EV_TIMEOUT
518 end
519 interface.eventwrite = nil
520 return -1
521 elseif byte and (err == "timeout" or err == "wantwrite") then -- want write again
522 --vdebug( "writebuffer is not empty:", err )
523 interface.writebuffer[1] = s_sub( interface.writebuffer[1], byte + 1, interface.writebufferlen ) -- new buffer
524 interface.writebufferlen = interface.writebufferlen - byte
525 if "wantread" == err then -- happens only with luasec
526 local callback = function( )
527 interface:_close()
528 interface.eventwritetimeout = nil
529 return -1;
530 end
531 interface.eventwritetimeout = addevent( base, nil, EV_TIMEOUT, callback, cfg.WRITE_TIMEOUT ) -- reg a new timeout event
532 debug( "wantread during write attempt, reg it in readcallback but dont know what really happens next..." )
533 -- hopefully this works with luasec; its simply not possible to use 2 different write events on a socket in luaevent
548 return -1 534 return -1
549 end 535 end
550 end 536 return EV_WRITE, cfg.WRITE_TIMEOUT
551 end 537 else -- connection was closed during writing or fatal error
552 538 interface.fatalerror = err or "fatal error"
553 interface.readcallback = function( event ) -- called on read events 539 debug( "connection failed in write event:", interface.fatalerror )
554 --vdebug( "new client read event, id/ip/port:", tostring(interface.id), tostring(ip), tostring(port) ) 540 interface:_close()
555 if interface.noreading or interface.fatalerror then -- leave this event 541 interface.eventwrite = nil
556 --vdebug( "leaving this event because:", tostring(interface.noreading or interface.fatalerror) )
557 interface.eventread = nil
558 return -1 542 return -1
559 end 543 end
560 if EV_TIMEOUT == event and interface:onreadtimeout() ~= true then 544 end
561 return -1 -- took too long to get some data from client -> disconnect 545 end
562 end 546
563 if interface._usingssl then -- handle luasec 547 interface.readcallback = function( event ) -- called on read events
564 if interface.eventwritetimeout then -- ok, in the past writecallback was regged 548 --vdebug( "new client read event, id/ip/port:", tostring(interface.id), tostring(ip), tostring(port) )
565 local ret = interface.writecallback( ) -- call it 549 if interface.noreading or interface.fatalerror then -- leave this event
566 --vdebug( "tried to write in readcallback, result:", tostring(ret) ) 550 --vdebug( "leaving this event because:", tostring(interface.noreading or interface.fatalerror) )
551 interface.eventread = nil
552 return -1
553 end
554 if EV_TIMEOUT == event and interface:onreadtimeout() ~= true then
555 return -1 -- took too long to get some data from client -> disconnect
556 end
557 if interface._usingssl then -- handle luasec
558 if interface.eventwritetimeout then -- ok, in the past writecallback was regged
559 local ret = interface.writecallback( ) -- call it
560 --vdebug( "tried to write in readcallback, result:", tostring(ret) )
561 end
562 if interface.eventreadtimeout then
563 interface.eventreadtimeout:close( )
564 interface.eventreadtimeout = nil
565 end
566 end
567 local buffer, err, part = interface.conn:receive( interface._pattern ) -- receive buffer with "pattern"
568 --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) )
569 buffer = buffer or part
570 if buffer and #buffer > cfg.MAX_READ_LENGTH then -- check buffer length
571 interface.fatalerror = "receive buffer exceeded"
572 debug( "fatal error:", interface.fatalerror )
573 interface:_close()
574 interface.eventread = nil
575 return -1
576 end
577 if err and ( err ~= "timeout" and err ~= "wantread" ) then
578 if "wantwrite" == err then -- need to read on write event
579 if not interface.eventwrite then -- register new write event if needed
580 interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT )
567 end 581 end
568 if interface.eventreadtimeout then 582 interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT,
569 interface.eventreadtimeout:close( ) 583 function( )
570 interface.eventreadtimeout = nil 584 interface:_close()
571 end 585 end, cfg.READ_TIMEOUT
572 end 586 )
573 local buffer, err, part = interface.conn:receive( interface._pattern ) -- receive buffer with "pattern" 587 debug( "wantwrite during read attempt, reg it in writecallback but dont know what really happens next..." )
574 --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) ) 588 -- to be honest i dont know what happens next, if it is allowed to first read, the write etc...
575 buffer = buffer or part 589 else -- connection was closed or fatal error
576 if buffer and #buffer > cfg.MAX_READ_LENGTH then -- check buffer length 590 interface.fatalerror = err
577 interface.fatalerror = "receive buffer exceeded" 591 debug( "connection failed in read event:", interface.fatalerror )
578 debug( "fatal error:", interface.fatalerror )
579 interface:_close() 592 interface:_close()
580 interface.eventread = nil 593 interface.eventread = nil
581 return -1 594 return -1
582 end 595 end
583 if err and ( err ~= "timeout" and err ~= "wantread" ) then 596 else
584 if "wantwrite" == err then -- need to read on write event 597 interface.onincoming( interface, buffer, err ) -- send new data to listener
585 if not interface.eventwrite then -- register new write event if needed 598 end
586 interface.eventwrite = addevent( base, interface.conn, EV_WRITE, interface.writecallback, cfg.WRITE_TIMEOUT ) 599 if interface.noreading then
587 end 600 interface.eventread = nil;
588 interface.eventreadtimeout = addevent( base, nil, EV_TIMEOUT, 601 return -1;
589 function( ) 602 end
590 interface:_close() 603 return EV_READ, cfg.READ_TIMEOUT
591 end, cfg.READ_TIMEOUT 604 end
592 ) 605
593 debug( "wantwrite during read attempt, reg it in writecallback but dont know what really happens next..." ) 606 client:settimeout( 0 ) -- set non blocking
594 -- to be honest i dont know what happens next, if it is allowed to first read, the write etc... 607 setmetatable(interface, interface_mt)
595 else -- connection was closed or fatal error 608 interfacelist[ interface ] = true -- add to interfacelist
596 interface.fatalerror = err 609 return interface
597 debug( "connection failed in read event:", interface.fatalerror ) 610 end
598 interface:_close() 611
599 interface.eventread = nil 612 local function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface
600 return -1 613 debug "creating server interface..."
601 end 614 local interface = {
615 _connections = 0;
616
617 conn = server;
618 onconnect = listener.onconnect; -- will be called when new client connected
619 eventread = false; -- read event handler
620 eventclose = false; -- close event handler
621 readcallback = false; -- read event callback
622 fatalerror = false; -- error message
623 nointerface = true; -- lock/unlock parameter
624
625 _ip = addr, _port = port, _pattern = pattern,
626 _sslctx = sslctx;
627 }
628 interface.id = tostring(interface):match("%x+$");
629 interface.readcallback = function( event ) -- server handler, called on incoming connections
630 --vdebug( "server can accept, id/addr/port:", interface, addr, port )
631 if interface.fatalerror then
632 --vdebug( "leaving this event because:", self.fatalerror )
633 interface.eventread = nil
634 return -1
635 end
636 local delay = cfg.ACCEPT_DELAY
637 if EV_TIMEOUT == event then
638 if interface._connections >= cfg.MAX_CONNECTIONS then -- check connection count
639 debug( "to many connections, seconds to wait for next accept:", delay )
640 return EV_TIMEOUT, delay -- timeout...
602 else 641 else
603 interface.onincoming( interface, buffer, err ) -- send new data to listener 642 return EV_READ -- accept again
604 end 643 end
605 if interface.noreading then 644 end
606 interface.eventread = nil; 645 --vdebug("max connection check ok, accepting...")
607 return -1; 646 local client, err = server:accept() -- try to accept; TODO: check err
608 end 647 while client do
609 return EV_READ, cfg.READ_TIMEOUT 648 if interface._connections >= cfg.MAX_CONNECTIONS then
610 end 649 client:close( ) -- refuse connection
611 650 debug( "maximal connections reached, refuse client connection; accept delay:", delay )
612 client:settimeout( 0 ) -- set non blocking 651 return EV_TIMEOUT, delay -- delay for next accept attempt
613 setmetatable(interface, interface_mt) 652 end
614 interfacelist[ interface ] = true -- add to interfacelist 653 local client_ip, client_port = client:getpeername( )
615 return interface 654 interface._connections = interface._connections + 1 -- increase connection count
616 end 655 local clientinterface = handleclient( client, client_ip, client_port, interface, pattern, listener, sslctx )
617 end 656 --vdebug( "client id:", clientinterface, "startssl:", startssl )
618 657 if has_luasec and sslctx then
619 local handleserver 658 clientinterface:starttls(sslctx, true)
620 do
621 function handleserver( server, addr, port, pattern, listener, sslctx ) -- creates an server interface
622 debug "creating server interface..."
623 local interface = {
624 _connections = 0;
625
626 conn = server;
627 onconnect = listener.onconnect; -- will be called when new client connected
628 eventread = false; -- read event handler
629 eventclose = false; -- close event handler
630 readcallback = false; -- read event callback
631 fatalerror = false; -- error message
632 nointerface = true; -- lock/unlock parameter
633
634 _ip = addr, _port = port, _pattern = pattern,
635 _sslctx = sslctx;
636 }
637 interface.id = tostring(interface):match("%x+$");
638 interface.readcallback = function( event ) -- server handler, called on incoming connections
639 --vdebug( "server can accept, id/addr/port:", interface, addr, port )
640 if interface.fatalerror then
641 --vdebug( "leaving this event because:", self.fatalerror )
642 interface.eventread = nil
643 return -1
644 end
645 local delay = cfg.ACCEPT_DELAY
646 if EV_TIMEOUT == event then
647 if interface._connections >= cfg.MAX_CONNECTIONS then -- check connection count
648 debug( "to many connections, seconds to wait for next accept:", delay )
649 return EV_TIMEOUT, delay -- timeout...
650 else
651 return EV_READ -- accept again
652 end
653 end
654 --vdebug("max connection check ok, accepting...")
655 local client, err = server:accept() -- try to accept; TODO: check err
656 while client do
657 if interface._connections >= cfg.MAX_CONNECTIONS then
658 client:close( ) -- refuse connection
659 debug( "maximal connections reached, refuse client connection; accept delay:", delay )
660 return EV_TIMEOUT, delay -- delay for next accept attempt
661 end
662 local client_ip, client_port = client:getpeername( )
663 interface._connections = interface._connections + 1 -- increase connection count
664 local clientinterface = handleclient( client, client_ip, client_port, interface, pattern, listener, sslctx )
665 --vdebug( "client id:", clientinterface, "startssl:", startssl )
666 if has_luasec and sslctx then
667 clientinterface:starttls(sslctx, true)
668 else
669 clientinterface:_start_session( true )
670 end
671 debug( "accepted incoming client connection from:", client_ip or "<unknown IP>", client_port or "<unknown port>", "to", port or "<unknown port>");
672
673 client, err = server:accept() -- try to accept again
674 end
675 return EV_READ
676 end
677
678 server:settimeout( 0 )
679 setmetatable(interface, interface_mt)
680 interfacelist[ interface ] = true
681 interface:_start_session()
682 return interface
683 end
684 end
685
686 local addserver = ( function( )
687 return function( addr, port, listener, pattern, sslctx, startssl ) -- TODO: check arguments
688 --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslctx or "nil", startssl or "nil")
689 if sslctx and not has_luasec then
690 debug "fatal error: luasec not found"
691 return nil, "luasec not found"
692 end
693 local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket
694 if not server then
695 debug( "creating server socket on "..addr.." port "..port.." failed:", err )
696 return nil, err
697 end
698 local interface = handleserver( server, addr, port, pattern, listener, sslctx, startssl ) -- new server handler
699 debug( "new server created with id:", tostring(interface))
700 return interface
701 end
702 end )( )
703
704 local addclient, wrapclient
705 do
706 function wrapclient( client, ip, port, listeners, pattern, sslctx )
707 local interface = handleclient( client, ip, port, nil, pattern, listeners, sslctx )
708 interface:_start_connection(sslctx)
709 return interface, client
710 --function handleclient( client, ip, port, server, pattern, listener, _, sslctx ) -- creates an client interface
711 end
712
713 function addclient( addr, serverport, listener, pattern, sslctx, typ )
714 if sslctx and not has_luasec then
715 debug "need luasec, but not available"
716 return nil, "luasec not found"
717 end
718 if not typ then
719 local addrinfo, err = getaddrinfo(addr)
720 if not addrinfo then return nil, err end
721 if addrinfo[1] and addrinfo[1].family == "inet6" then
722 typ = "tcp6"
723 else 659 else
724 typ = "tcp" 660 clientinterface:_start_session( true )
725 end 661 end
726 end 662 debug( "accepted incoming client connection from:", client_ip or "<unknown IP>", client_port or "<unknown port>", "to", port or "<unknown port>");
727 local create = socket[typ] 663
728 if type( create ) ~= "function" then 664 client, err = server:accept() -- try to accept again
729 return nil, "invalid socket type" 665 end
730 end 666 return EV_READ
731 local client, err = create() -- creating new socket 667 end
732 if not client then 668
733 debug( "cannot create socket:", err ) 669 server:settimeout( 0 )
734 return nil, err 670 setmetatable(interface, interface_mt)
735 end 671 interfacelist[ interface ] = true
736 client:settimeout( 0 ) -- set nonblocking 672 interface:_start_session()
737 local res, err = client:connect( addr, serverport ) -- connect 673 return interface
738 if res or ( err == "timeout" ) then 674 end
739 local ip, port = client:getsockname( ) 675
740 local interface = wrapclient( client, ip, serverport, listener, pattern, sslctx ) 676 local function addserver( addr, port, listener, pattern, sslctx, startssl ) -- TODO: check arguments
741 interface:_start_connection( startssl ) 677 --vdebug( "creating new tcp server with following parameters:", addr or "nil", port or "nil", sslctx or "nil", startssl or "nil")
742 debug( "new connection id:", interface.id ) 678 if sslctx and not has_luasec then
743 return interface, err 679 debug "fatal error: luasec not found"
680 return nil, "luasec not found"
681 end
682 local server, err = socket.bind( addr, port, cfg.ACCEPT_QUEUE ) -- create server socket
683 if not server then
684 debug( "creating server socket on "..addr.." port "..port.." failed:", err )
685 return nil, err
686 end
687 local interface = handleserver( server, addr, port, pattern, listener, sslctx, startssl ) -- new server handler
688 debug( "new server created with id:", tostring(interface))
689 return interface
690 end
691
692 local function wrapclient( client, ip, port, listeners, pattern, sslctx )
693 local interface = handleclient( client, ip, port, nil, pattern, listeners, sslctx )
694 interface:_start_connection(sslctx)
695 return interface, client
696 --function handleclient( client, ip, port, server, pattern, listener, _, sslctx ) -- creates an client interface
697 end
698
699 local function addclient( addr, serverport, listener, pattern, sslctx, typ )
700 if sslctx and not has_luasec then
701 debug "need luasec, but not available"
702 return nil, "luasec not found"
703 end
704 if not typ then
705 local addrinfo, err = getaddrinfo(addr)
706 if not addrinfo then return nil, err end
707 if addrinfo[1] and addrinfo[1].family == "inet6" then
708 typ = "tcp6"
744 else 709 else
745 debug( "new connection failed:", err ) 710 typ = "tcp"
746 return nil, err 711 end
747 end 712 end
748 end 713 local create = socket[typ]
749 end 714 if type( create ) ~= "function" then
750 715 return nil, "invalid socket type"
751 716 end
752 local loop = function( ) -- starts the event loop 717 local client, err = create() -- creating new socket
718 if not client then
719 debug( "cannot create socket:", err )
720 return nil, err
721 end
722 client:settimeout( 0 ) -- set nonblocking
723 local res, err = client:connect( addr, serverport ) -- connect
724 if res or ( err == "timeout" ) then
725 local ip, port = client:getsockname( )
726 local interface = wrapclient( client, ip, serverport, listener, pattern, sslctx )
727 interface:_start_connection( startssl )
728 debug( "new connection id:", interface.id )
729 return interface, err
730 else
731 debug( "new connection failed:", err )
732 return nil, err
733 end
734 end
735
736 local function loop( ) -- starts the event loop
753 base:loop( ) 737 base:loop( )
754 return "quitting"; 738 return "quitting";
755 end 739 end
756 740
757 local function newevent( ... ) 741 local function newevent( ... )
758 return addevent( base, ... ) 742 return addevent( base, ... )
759 end 743 end
760 744
761 local closeallservers = function( arg ) 745 local function closeallservers ( arg )
762 for item in pairs( interfacelist ) do 746 for item in pairs( interfacelist ) do
763 if item.type == "server" then 747 if item.type == "server" then
764 item:close( arg ) 748 item:close( arg )
765 end 749 end
766 end 750 end
812 end 796 end
813 sender:set_mode("*a"); 797 sender:set_mode("*a");
814 end 798 end
815 799
816 return { 800 return {
817
818 cfg = cfg, 801 cfg = cfg,
819 base = base, 802 base = base,
820 loop = loop, 803 loop = loop,
821 link = link, 804 link = link,
822 event = event, 805 event = event,