diff options
Diffstat (limited to 'net/server_select.lua')
| -rw-r--r-- | net/server_select.lua | 154 |
1 files changed, 110 insertions, 44 deletions
diff --git a/net/server_select.lua b/net/server_select.lua index 12aef9d8..3b83bb6d 100644 --- a/net/server_select.lua +++ b/net/server_select.lua @@ -40,6 +40,7 @@ local coroutine = use "coroutine" local math_min = math.min local math_huge = math.huge local table_concat = table.concat +local table_insert = table.insert local string_sub = string.sub local coroutine_wrap = coroutine.wrap local coroutine_yield = coroutine.yield @@ -55,7 +56,6 @@ local getaddrinfo = luasocket.dns.getaddrinfo local ssl_wrap = ( has_luasec and luasec.wrap ) local socket_bind = luasocket.bind -local socket_sleep = luasocket.sleep local socket_select = luasocket.select --// functions //-- @@ -100,7 +100,6 @@ local _sendtraffic local _readtraffic local _selecttimeout -local _sleeptime local _tcpbacklog local _accepretry @@ -114,8 +113,6 @@ local _checkinterval local _sendtimeout local _readtimeout -local _timer - local _maxselectlen local _maxfd @@ -135,13 +132,12 @@ _fullservers = { } -- servers in a paused state while there are too many clients _readlistlen = 0 -- length of readlist _sendlistlen = 0 -- length of sendlist -_timerlistlen = 0 -- lenght of timerlist +_timerlistlen = 0 -- length of timerlist _sendtraffic = 0 -- some stats _readtraffic = 0 _selecttimeout = 1 -- timeout of socket.select -_sleeptime = 0 -- time to wait at the end of every loop _tcpbacklog = 128 -- some kind of hint to the OS _accepretry = 10 -- seconds to wait until the next attempt of a full server to accept @@ -301,7 +297,6 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport local bufferqueuelen = 0 -- end of buffer array local toclose - local fatalerror local needtls local bufferlen = 0 @@ -425,7 +420,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport bufferlen = bufferlen + #data if bufferlen > maxsendlen then _closelist[ handler ] = "send buffer exceeded" -- cannot close the client at the moment, have to wait to the end of the cycle - handler.write = idfalse -- dont write anymore + handler.write = idfalse -- don't write anymore return false elseif socket and not _sendlist[ socket ] then _sendlistlen = addsocket(_sendlist, socket, _sendlistlen) @@ -517,7 +512,6 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport return dispatch( handler, buffer, err ) else -- connections was closed or fatal error out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) ) - fatalerror = true _ = handler and handler:force_close( err ) return false end @@ -537,7 +531,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport else succ, err, count = false, "unexpected close", 0; end - if succ then -- sending succesful + if succ then -- sending successful bufferqueuelen = 0 bufferlen = 0 _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) -- delete socket from writelist @@ -557,7 +551,6 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport return true else -- connection was closed during sending or fatal error out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) ) - fatalerror = true _ = handler and handler:force_close( err ) return false end @@ -806,7 +799,6 @@ end getsettings = function( ) return { select_timeout = _selecttimeout; - select_sleep_time = _sleeptime; tcp_backlog = _tcpbacklog; max_send_buffer_size = _maxsendlen; max_receive_buffer_size = _maxreadlen; @@ -825,7 +817,6 @@ changesettings = function( new ) return nil, "invalid settings table" end _selecttimeout = tonumber( new.select_timeout ) or _selecttimeout - _sleeptime = tonumber( new.select_sleep_time ) or _sleeptime _maxsendlen = tonumber( new.max_send_buffer_size ) or _maxsendlen _maxreadlen = tonumber( new.max_receive_buffer_size ) or _maxreadlen _checkinterval = tonumber( new.select_idle_check_interval ) or _checkinterval @@ -848,6 +839,49 @@ addtimer = function( listener ) return true end +local add_task do + local data = {}; + local new_data = {}; + + function add_task(delay, callback) + local current_time = luasocket_gettime(); + delay = delay + current_time; + if delay >= current_time then + table_insert(new_data, {delay, callback}); + else + local r = callback(current_time); + if r and type(r) == "number" then + return add_task(r, callback); + end + end + end + + addtimer(function(current_time) + if #new_data > 0 then + for _, d in pairs(new_data) do + table_insert(data, d); + end + new_data = {}; + end + + local next_time = math_huge; + for i, d in pairs(data) do + local t, callback = d[1], d[2]; + if t <= current_time then + data[i] = nil; + local r = callback(current_time); + if type(r) == "number" then + add_task(r, callback); + next_time = math_min(next_time, r); + end + else + next_time = math_min(next_time, t - current_time); + end + end + return next_time; + end); +end + stats = function( ) return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen end @@ -855,31 +889,38 @@ end local quitting; local function setquitting(quit) - quitting = not not quit; + quitting = quit; end loop = function(once) -- this is the main loop of the program if quitting then return "quitting"; end if once then quitting = "once"; end - local next_timer_time = math_huge; + _currenttime = luasocket_gettime( ) repeat + -- Fire timers + local next_timer_time = math_huge; + for i = 1, _timerlistlen do + local t = _timerlist[ i ]( _currenttime ) -- fire timers + if t then next_timer_time = math_min(next_timer_time, t); end + end + local read, write, err = socket_select( _readlist, _sendlist, math_min(_selecttimeout, next_timer_time) ) - for _, socket in ipairs( write ) do -- send data waiting in writequeues + for _, socket in ipairs( read ) do -- receive data local handler = _socketlist[ socket ] if handler then - handler.sendbuffer( ) + handler.readbuffer( ) else closesocket( socket ) - out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen + out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen end end - for _, socket in ipairs( read ) do -- receive data + for _, socket in ipairs( write ) do -- send data waiting in writequeues local handler = _socketlist[ socket ] if handler then - handler.readbuffer( ) + handler.sendbuffer( ) else closesocket( socket ) - out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen + out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen end end for handler, err in pairs( _closelist ) do @@ -910,29 +951,14 @@ loop = function(once) -- this is the main loop of the program end end - -- Fire timers - if _currenttime - _timer >= math_min(next_timer_time, 1) then - next_timer_time = math_huge; - for i = 1, _timerlistlen do - local t = _timerlist[ i ]( _currenttime ) -- fire timers - if t then next_timer_time = math_min(next_timer_time, t); end - end - _timer = _currenttime - else - next_timer_time = next_timer_time - (_currenttime - _timer); - end - for server, paused_time in pairs( _fullservers ) do if _currenttime - paused_time > _accepretry then _fullservers[ server ] = nil; server.resume(); end end - - -- wait some time (0 by default) - socket_sleep( _sleeptime ) until quitting; - if once and quitting == "once" then quitting = nil; return; end + if quitting == "once" then quitting = nil; return; end closeall(); return "quitting" end @@ -952,6 +978,7 @@ local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx if not handler then return nil, err end _socketlist[ socket ] = handler if not sslctx then + _readlistlen = addsocket(_readlist, socket, _readlistlen) _sendlistlen = addsocket(_sendlist, socket, _sendlistlen) if listeners.onconnect then -- When socket is writeable, call onconnect @@ -977,16 +1004,14 @@ local addclient = function( address, port, listeners, pattern, sslctx, typ ) elseif sslctx and not has_luasec then err = "luasec not found" end - if not typ then + if getaddrinfo and not typ then local addrinfo, err = getaddrinfo(address) if not addrinfo then return nil, err end if addrinfo[1] and addrinfo[1].family == "inet6" then typ = "tcp6" - else - typ = "tcp" end end - local create = luasocket[typ] + local create = luasocket[typ or "tcp"] if type( create ) ~= "function" then err = "invalid socket type" end @@ -1002,14 +1027,54 @@ local addclient = function( address, port, listeners, pattern, sslctx, typ ) end client:settimeout( 0 ) local ok, err = client:connect( address, port ) - if ok or err == "timeout" then + if ok or err == "timeout" or err == "Operation already in progress" then return wrapclient( client, address, port, listeners, pattern, sslctx ) else return nil, err end end ---// EXPERIMENTAL //-- +local closewatcher = function (handler) + local socket = handler.conn; + _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) + _readlistlen = removesocket( _readlist, socket, _readlistlen ) + _socketlist[ socket ] = nil +end; + +local addremove = function (handler, read, send) + local socket = handler.conn + _socketlist[ socket ] = handler + if read ~= nil then + if read then + _readlistlen = addsocket( _readlist, socket, _readlistlen ) + else + _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) + end + end + if send ~= nil then + if send then + _sendlistlen = addsocket( _sendlist, socket, _sendlistlen ) + else + _readlistlen = removesocket( _readlist, socket, _readlistlen ) + end + end +end + +local watchfd = function ( fd, onreadable, onwriteable ) + local socket = fd + if type(fd) == "number" then + socket = { getfd = function () return fd; end } + end + local handler = { + conn = socket; + readbuffer = onreadable or id; + sendbuffer = onwriteable or id; + close = closewatcher; + setflags = addremove; + }; + addremove( handler, onreadable, onwriteable ) + return handler +end ----------------------------------// BEGIN //-- @@ -1017,7 +1082,6 @@ use "setmetatable" ( _socketlist, { __mode = "k" } ) use "setmetatable" ( _readtimes, { __mode = "k" } ) use "setmetatable" ( _writetimes, { __mode = "k" } ) -_timer = luasocket_gettime( ) _starttime = luasocket_gettime( ) local function setlogger(new_logger) @@ -1032,9 +1096,11 @@ end return { _addtimer = addtimer, + add_task = add_task; addclient = addclient, wrapclient = wrapclient, + watchfd = watchfd, loop = loop, link = link, |