diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/connlisteners.lua | 2 | ||||
| -rw-r--r-- | net/cqueues.lua | 74 | ||||
| -rw-r--r-- | net/dns.lua | 13 | ||||
| -rw-r--r-- | net/httpserver.lua | 2 | ||||
| -rw-r--r-- | net/server.lua | 114 | ||||
| -rw-r--r-- | net/server_epoll.lua | 696 | ||||
| -rw-r--r-- | net/server_event.lua | 20 | ||||
| -rw-r--r-- | net/server_select.lua | 90 |
8 files changed, 929 insertions, 82 deletions
diff --git a/net/connlisteners.lua b/net/connlisteners.lua index 000bfa63..38cf8f08 100644 --- a/net/connlisteners.lua +++ b/net/connlisteners.lua @@ -5,7 +5,7 @@ local traceback = debug.traceback; local _ENV = nil; local function fail() - log("error", "Attempt to use legacy connlisteners API. For more info see http://prosody.im/doc/developers/network"); + log("error", "Attempt to use legacy connlisteners API. For more info see https://prosody.im/doc/developers/network"); log("error", "Legacy connlisteners API usage, %s", traceback("", 2)); end diff --git a/net/cqueues.lua b/net/cqueues.lua new file mode 100644 index 00000000..8c4c756f --- /dev/null +++ b/net/cqueues.lua @@ -0,0 +1,74 @@ +-- Prosody IM +-- Copyright (C) 2014 Daurnimator +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- +-- This module allows you to use cqueues with a net.server mainloop +-- + +local server = require "net.server"; +local cqueues = require "cqueues"; +assert(cqueues.VERSION >= 20150113, "cqueues newer than 20150113 required") + +-- Create a single top level cqueue +local cq; + +if server.cq then -- server provides cqueues object + cq = server.cq; +elseif server.get_backend() == "select" and server._addtimer then -- server_select + cq = cqueues.new(); + local function step() + assert(cq:loop(0)); + end + + -- Use wrapclient (as wrapconnection isn't exported) to get server_select to watch cq fd + local handler = server.wrapclient({ + getfd = function() return cq:pollfd(); end; + settimeout = function() end; -- Method just needs to exist + close = function() end; -- Need close method for 'closeall' + }, nil, nil, {}); + + -- Only need to listen for readable; cqueues handles everything under the hood + -- readbuffer is called when `select` notes an fd as readable + handler.readbuffer = step; + + -- Use server_select low lever timer facility, + -- this callback gets called *every* time there is a timeout in the main loop + server._addtimer(function(current_time) + -- This may end up in extra step()'s, but cqueues handles it for us. + step(); + return cq:timeout(); + end); +elseif server.event and server.base then -- server_event + cq = cqueues.new(); + -- Only need to listen for readable; cqueues handles everything under the hood + local EV_READ = server.event.EV_READ; + -- Convert a cqueues timeout to an acceptable timeout for luaevent + local function luaevent_safe_timeout(cq) + local t = cq:timeout(); + -- if you give luaevent 0 or nil, it re-uses the previous timeout. + if t == 0 then + t = 0.000001; -- 1 microsecond is the smallest that works (goes into a `struct timeval`) + elseif t == nil then -- pick something big if we don't have one + t = 0x7FFFFFFF; -- largest 32bit int + end + return t + end + local event_handle; + event_handle = server.base:addevent(cq:pollfd(), EV_READ, function(e) + -- Need to reference event_handle or this callback will get collected + -- This creates a circular reference that can only be broken if event_handle is manually :close()'d + local _ = event_handle; + -- Run as many cqueues things as possible (with a timeout of 0) + -- If an error is thrown, it will break the libevent loop; but prosody resumes after logging a top level error + assert(cq:loop(0)); + return EV_READ, luaevent_safe_timeout(cq); + end, luaevent_safe_timeout(cq)); +else + error "NYI" +end + +return { + cq = cq; +} diff --git a/net/dns.lua b/net/dns.lua index eba2b5a0..e6749025 100644 --- a/net/dns.lua +++ b/net/dns.lua @@ -15,6 +15,7 @@ local socket = require "socket"; local timer = require "util.timer"; local new_ip = require "util.ip".new_ip; +local have_util_net, util_net = pcall(require, "util.net"); local _, windows = pcall(require, "util.windows"); local is_windows = (_ and windows) or os.getenv("WINDIR"); @@ -382,6 +383,12 @@ function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A rr.a = string.format('%i.%i.%i.%i', b1, b2, b3, b4); end +if have_util_net and util_net.ntop then + function resolver:A(rr) + rr.a = util_net.ntop(self:sub(4)); + end +end + function resolver:AAAA(rr) local addr = {}; for _ = 1, rr.rdlength, 2 do @@ -402,6 +409,12 @@ function resolver:AAAA(rr) rr.aaaa = addr:gsub(zeros[1], "::", 1):gsub("^0::", "::"):gsub("::0$", "::"); end +if have_util_net and util_net.ntop then + function resolver:AAAA(rr) + rr.aaaa = util_net.ntop(self:sub(16)); + end +end + function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME rr.cname = self:name(); end diff --git a/net/httpserver.lua b/net/httpserver.lua index 6e2e31b9..56561306 100644 --- a/net/httpserver.lua +++ b/net/httpserver.lua @@ -5,7 +5,7 @@ local traceback = debug.traceback; local _ENV = nil; function fail() - log("error", "Attempt to use legacy HTTP API. For more info see http://prosody.im/doc/developers/legacy_http"); + log("error", "Attempt to use legacy HTTP API. For more info see https://prosody.im/doc/developers/legacy_http"); log("error", "Legacy HTTP API usage, %s", traceback("", 2)); end diff --git a/net/server.lua b/net/server.lua index 41e180fa..8b6fbc0b 100644 --- a/net/server.lua +++ b/net/server.lua @@ -6,25 +6,75 @@ -- COPYING file in the source package for more information. -- -local use_luaevent = prosody and require "core.configmanager".get("*", "use_libevent"); +local server_type = prosody and require "core.configmanager".get("*", "network_backend") or "select"; +if prosody and require "core.configmanager".get("*", "use_libevent") then + server_type = "event"; +end -if use_luaevent then - use_luaevent = pcall(require, "luaevent.core"); - if not use_luaevent then +if server_type == "event" then + if not pcall(require, "luaevent.core") then log("error", "libevent not found, falling back to select()"); + server_type = "select" end end local server; - -if use_luaevent then +local set_config; +if server_type == "event" then server = require "net.server_event"; - -- Overwrite signal.signal() because we need to ask libevent to - -- handle them instead - local ok, signal = pcall(require, "util.signal"); - if ok and signal then - local _signal_signal = signal.signal; + local defaults = {}; + for k,v in pairs(server.cfg) do + defaults[k] = v; + end + function set_config(settings) + local event_settings = { + ACCEPT_DELAY = settings.accept_retry_interval; + ACCEPT_QUEUE = settings.tcp_backlog; + CLEAR_DELAY = settings.event_clear_interval; + CONNECT_TIMEOUT = settings.connect_timeout; + DEBUG = settings.debug; + HANDSHAKE_TIMEOUT = settings.ssl_handshake_timeout; + MAX_CONNECTIONS = settings.max_connections; + MAX_HANDSHAKE_ATTEMPTS = settings.max_ssl_handshake_roundtrips; + MAX_READ_LENGTH = settings.max_receive_buffer_size; + MAX_SEND_LENGTH = settings.max_send_buffer_size; + READ_TIMEOUT = settings.read_timeout; + WRITE_TIMEOUT = settings.send_timeout; + }; + + for k,default in pairs(defaults) do + server.cfg[k] = event_settings[k] or default; + end + end +elseif server_type == "select" then + server = require "net.server_select"; + + local defaults = {}; + for k,v in pairs(server.getsettings()) do + defaults[k] = v; + end + function set_config(settings) + local select_settings = {}; + for k,default in pairs(defaults) do + select_settings[k] = settings[k] or default; + end + server.changesettings(select_settings); + end +else + server = require("net.server_"..server_type); + set_config = server.set_config; + if not server.get_backend then + function server.get_backend() + return server_type; + end + end +end + +-- If server.hook_signal exists, replace signal.signal() +local has_signal, signal = pcall(require, "util.signal"); +if has_signal then + if server.hook_signal then function signal.signal(signal_id, handler) if type(signal_id) == "string" then signal_id = signal[signal_id:upper()]; @@ -34,46 +84,22 @@ if use_luaevent then end return server.hook_signal(signal_id, handler); end + else + server.hook_signal = signal.signal; end else - use_luaevent = false; - server = require "net.server_select"; + if not server.hook_signal then + server.hook_signal = function() + return false, "signal hooking not supported" + end + end end -if prosody then +if prosody and set_config then local config_get = require "core.configmanager".get; - local defaults = {}; - for k,v in pairs(server.cfg or server.getsettings()) do - defaults[k] = v; - end local function load_config() local settings = config_get("*", "network_settings") or {}; - if use_luaevent then - local event_settings = { - ACCEPT_DELAY = settings.accept_retry_interval; - ACCEPT_QUEUE = settings.tcp_backlog; - CLEAR_DELAY = settings.event_clear_interval; - CONNECT_TIMEOUT = settings.connect_timeout; - DEBUG = settings.debug; - HANDSHAKE_TIMEOUT = settings.ssl_handshake_timeout; - MAX_CONNECTIONS = settings.max_connections; - MAX_HANDSHAKE_ATTEMPTS = settings.max_ssl_handshake_roundtrips; - MAX_READ_LENGTH = settings.max_receive_buffer_size; - MAX_SEND_LENGTH = settings.max_send_buffer_size; - READ_TIMEOUT = settings.read_timeout; - WRITE_TIMEOUT = settings.send_timeout; - }; - - for k,default in pairs(defaults) do - server.cfg[k] = event_settings[k] or default; - end - else - local select_settings = {}; - for k,default in pairs(defaults) do - select_settings[k] = settings[k] or default; - end - server.changesettings(select_settings); - end + return set_config(settings); end load_config(); prosody.events.add_handler("config-reloaded", load_config); diff --git a/net/server_epoll.lua b/net/server_epoll.lua new file mode 100644 index 00000000..a88aad12 --- /dev/null +++ b/net/server_epoll.lua @@ -0,0 +1,696 @@ +-- Prosody IM +-- Copyright (C) 2016 Kim Alvefur +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- + +-- server_epoll +-- Server backend based on https://luarocks.org/modules/zash/lua-epoll + +local t_sort = table.sort; +local t_insert = table.insert; +local t_remove = table.remove; +local t_concat = table.concat; +local setmetatable = setmetatable; +local tostring = tostring; +local pcall = pcall; +local next = next; +local pairs = pairs; +local log = require "util.logger".init("server_epoll"); +local epoll = require "epoll"; +local socket = require "socket"; +local luasec = require "ssl"; +local gettime = require "util.time".now; +local createtable = require "util.table".create; +local _SOCKETINVALID = socket._SOCKETINVALID or -1; + +assert(socket.tcp6 and socket.tcp4, "Incompatible LuaSocket version"); + +local _ENV = nil; + +local default_config = { __index = { + read_timeout = 900; + write_timeout = 7; + tcp_backlog = 128; + accept_retry_interval = 10; + read_retry_delay = 1e-06; + connect_timeout = 20; + handshake_timeout = 60; + max_wait = 86400; + min_wait = 1e-06; +}}; +local cfg = default_config.__index; + +local fds = createtable(10, 0); -- FD -> conn + +-- Timer and scheduling -- + +local timers = {}; + +local function noop() end +local function closetimer(t) + t[1] = 0; + t[2] = noop; +end + +-- Set to true when timers have changed +local resort_timers = false; + +-- Add absolute timer +local function at(time, f) + local timer = { time, f, close = closetimer }; + t_insert(timers, timer); + resort_timers = true; + return timer; +end + +-- Add relative timer +local function addtimer(timeout, f) + return at(gettime() + timeout, f); +end + +-- Run callbacks of expired timers +-- Return time until next timeout +local function runtimers(next_delay, min_wait) + -- Any timers at all? + if not timers[1] then + return next_delay; + end + + if resort_timers then + -- Sort earliest timers to the end + t_sort(timers, function (a, b) return a[1] > b[1]; end); + resort_timers = false; + end + + -- Iterate from the end and remove completed timers + for i = #timers, 1, -1 do + local timer = timers[i]; + local t, f = timer[1], timer[2]; + -- Get time for every iteration to increase accuracy + local now = gettime(); + if t > now then + -- This timer should not fire yet + local diff = t - now; + if diff < next_delay then + next_delay = diff; + end + break; + end + local new_timeout = f(now); + if new_timeout then + -- Schedule for 'delay' from the time actually scheduled, + -- not from now, in order to prevent timer drift. + timer[1] = t + new_timeout; + resort_timers = true; + else + t_remove(timers, i); + end + end + + if resort_timers or next_delay < min_wait then + -- Timers may be added from within a timer callback. + -- Those would not be considered for next_delay, + -- and we might sleep for too long, so instead + -- we return a shorter timeout so we can + -- properly sort all new timers. + next_delay = min_wait; + end + + return next_delay; +end + +-- Socket handler interface + +local interface = {}; +local interface_mt = { __index = interface }; + +function interface_mt:__tostring() + if self.sockname and self.peername then + return ("FD %d (%s, %d, %s, %d)"):format(self:getfd(), self.peername, self.peerport, self.sockname, self.sockport); + elseif self.sockname or self.peername then + return ("FD %d (%s, %d)"):format(self:getfd(), self.sockname or self.peername, self.sockport or self.peerport); + end + return ("%s FD %d"):format(tostring(self.conn), self:getfd()); +end + +-- Replace the listener and tell the old one +function interface:setlistener(listeners) + self:on("detach"); + self.listeners = listeners; +end + +-- Call a listener callback +function interface:on(what, ...) + if not self.listeners then + log("error", "%s has no listeners", self); + return; + end + local listener = self.listeners["on"..what]; + if not listener then + -- log("debug", "Missing listener 'on%s'", what); -- uncomment for development and debugging + return; + end + local ok, err = pcall(listener, self, ...); + if not ok then + log("error", "Error calling on%s: %s", what, err); + end + return err; +end + +-- Return the file descriptor number +function interface:getfd() + if self.conn then + return self.conn:getfd(); + end + return _SOCKETINVALID; +end + +function interface:server() + return self._server or self; +end + +-- Get IP address +function interface:ip() + return self.peername or self.sockname; +end + +-- Get a port number, doesn't matter which +function interface:port() + return self.sockport or self.peerport; +end + +-- Get local port number +function interface:clientport() + return self.sockport; +end + +-- Get remote port +function interface:serverport() + if self.sockport then + return self.sockport; + elseif self._server then + self._server:port(); + end +end + +-- Return underlying socket +function interface:socket() + return self.conn; +end + +function interface:set_mode(new_mode) + self._pattern = new_mode; +end + +function interface:setoption(k, v) + -- LuaSec doesn't expose setoption :( + if self.conn.setoption then + self.conn:setoption(k, v); + end +end + +-- Timeout for detecting dead or idle sockets +function interface:setreadtimeout(t) + if t == false then + if self._readtimeout then + self._readtimeout:close(); + self._readtimeout = nil; + end + return + end + t = t or cfg.read_timeout; + if self._readtimeout then + self._readtimeout[1] = gettime() + t; + resort_timers = true; + else + self._readtimeout = addtimer(t, function () + if self:on("readtimeout") then + return cfg.read_timeout; + else + self:on("disconnect", "read timeout"); + self:destroy(); + end + end); + end +end + +-- Timeout for detecting dead sockets +function interface:setwritetimeout(t) + if t == false then + if self._writetimeout then + self._writetimeout:close(); + self._writetimeout = nil; + end + return + end + t = t or cfg.write_timeout; + if self._writetimeout then + self._writetimeout[1] = gettime() + t; + resort_timers = true; + else + self._writetimeout = addtimer(t, function () + self:on("disconnect", "write timeout"); + self:destroy(); + end); + end +end + +-- lua-epoll flag for currently requested poll state +function interface:flags() + if self._wantread then + if self._wantwrite then + return "rw"; + end + return "r"; + elseif self._wantwrite then + return "w"; + end +end + +-- Add or remove sockets or modify epoll flags +function interface:setflags(r, w) + if r ~= nil then self._wantread = r; end + if w ~= nil then self._wantwrite = w; end + local flags = self:flags(); + local currentflags = self._flags; + if flags == currentflags then + return true; + end + local fd = self:getfd(); + if fd < 0 then + self._wantread, self._wantwrite = nil, nil; + return nil, "invalid fd"; + end + local op = "mod"; + if not flags then + op = "del"; + elseif not currentflags then + op = "add"; + end + local ok, err = epoll.ctl(op, fd, flags); +-- log("debug", "epoll_ctl(%q, %d, %q) -> %s" .. (err and ", %q" or ""), +-- op, fd, flags or "", tostring(ok), err); + if not ok then return ok, err end + if op == "add" then + fds[fd] = self; + elseif op == "del" then + fds[fd] = nil; + end + self._flags = flags; + return true; +end + +-- Called when socket is readable +function interface:onreadable() + local data, err, partial = self.conn:receive(self._pattern); + if data then + self:on("incoming", data); + else + if partial then + self:on("incoming", partial, err); + end + if err == "wantread" then + self:setflags(true, nil); + elseif err == "wantwrite" then + self:setflags(nil, true); + elseif err ~= "timeout" then + self:on("disconnect", err); + self:destroy() + return; + end + end + if not self.conn then return; end + if self.conn:dirty() then + self:setreadtimeout(false); + self:pausefor(cfg.read_retry_delay); + else + self:setreadtimeout(); + end +end + +-- Called when socket is writable +function interface:onwriteable() + local buffer = self.writebuffer; + local data = t_concat(buffer); + local ok, err, partial = self.conn:send(data); + if ok then + for i = #buffer, 1, -1 do + buffer[i] = nil; + end + self:setflags(nil, false); + self:setwritetimeout(false); + self:ondrain(); -- Be aware of writes in ondrain + return; + end + if partial then + buffer[1] = data:sub(partial+1); + for i = #buffer, 2, -1 do + buffer[i] = nil; + end + self:setwritetimeout(); + end + if err == "wantwrite" or err == "timeout" then + self:setflags(nil, true); + elseif err == "wantread" then + self:setflags(true, nil); + elseif err ~= "timeout" then + self:on("disconnect", err); + self:destroy(); + end +end + +-- The write buffer has been successfully emptied +function interface:ondrain() + return self:on("drain"); +end + +-- Add data to write buffer and set flag for wanting to write +function interface:write(data) + local buffer = self.writebuffer; + if buffer then + t_insert(buffer, data); + else + self.writebuffer = { data }; + end + self:setwritetimeout(); + self:setflags(nil, true); + return #data; +end +interface.send = interface.write; + +-- Close, possibly after writing is done +function interface:close() + if self.writebuffer and self.writebuffer[1] then + self:setflags(false, true); -- Flush final buffer contents + self.write, self.send = noop, noop; -- No more writing + log("debug", "Close %s after writing", tostring(self)); + self.ondrain = interface.close; + else + log("debug", "Close %s now", tostring(self)); + self.write, self.send = noop, noop; + self.close = noop; + self:on("disconnect"); + self:destroy(); + end +end + +function interface:destroy() + self:setflags(false, false); + self:setwritetimeout(false); + self:setreadtimeout(false); + self.onreadable = noop; + self.onwriteable = noop; + self.destroy = noop; + self.close = noop; + self.on = noop; + self.conn:close(); + self.conn = nil; +end + +function interface:ssl() + return self._tls; +end + +function interface:starttls(ctx) + if ctx then self.tls = ctx; end + if self.writebuffer and self.writebuffer[1] then + log("debug", "Start TLS on %s after write", tostring(self)); + self.ondrain = interface.starttls; + self.starttls = false; + self:setflags(nil, true); -- make sure wantwrite is set + else + log("debug", "Start TLS on %s now", tostring(self)); + self:setflags(false, false); + local conn, err = luasec.wrap(self.conn, ctx or self.tls); + if not conn then + self:on("disconnect", err); + self:destroy(); + return conn, err; + end + conn:settimeout(0); + self.conn = conn; + self.ondrain = nil; + self.onwriteable = interface.tlshandskake; + self.onreadable = interface.tlshandskake; + self:setflags(true, true); + self:setwritetimeout(cfg.handshake_timeout); + end +end + +function interface:tlshandskake() + self:setwritetimeout(false); + self:setreadtimeout(false); + local ok, err = self.conn:dohandshake(); + if ok then + log("debug", "TLS handshake on %s complete", tostring(self)); + self.onwriteable = nil; + self.onreadable = nil; + self._tls = true; + self:on("status", "ssl-handshake-complete"); + self:init(); + elseif err == "wantread" then + log("debug", "TLS handshake on %s to wait until readable", tostring(self)); + self:setflags(true, false); + self:setreadtimeout(cfg.handshake_timeout); + elseif err == "wantwrite" then + log("debug", "TLS handshake on %s to wait until writable", tostring(self)); + self:setflags(false, true); + self:setwritetimeout(cfg.handshake_timeout); + else + log("debug", "TLS handshake error on %s: %s", tostring(self), err); + self:on("disconnect", err); + self:destroy(); + end +end + +local function wrapsocket(client, server, pattern, listeners, tls) -- luasocket object -> interface object + client:settimeout(0); + local conn = setmetatable({ + conn = client; + _server = server; + created = gettime(); + listeners = listeners; + _pattern = pattern or (server and server._pattern); + writebuffer = {}; + tls = tls; + }, interface_mt); + + if client.getpeername then + conn.peername, conn.peerport = client:getpeername(); + end + if client.getsockname then + conn.sockname, conn.sockport = client:getsockname(); + end + return conn; +end + +-- A server interface has new incoming connections waiting +-- This replaces the onreadable callback +function interface:onacceptable() + local conn, err = self.conn:accept(); + if not conn then + log("debug", "Error accepting new client: %s, server will be paused for %ds", err, cfg.accept_retry_interval); + self:pausefor(cfg.accept_retry_interval); + return; + end + local client = wrapsocket(conn, self, nil, self.listeners, self.tls); + log("debug", "New connection %s", tostring(client)); + client:init(); +end + +-- Initialization +function interface:init() + if self.tls and not self._tls then + return self:starttls(); + else + self.onwriteable = interface.onconnect; + self:setwritetimeout(); + return self:setflags(false, true); + end +end + +function interface:pause() + return self:setflags(false); +end + +function interface:resume() + return self:setflags(true); +end + +-- Pause connection for some time +function interface:pausefor(t) + if self._pausefor then + self._pausefor:close(); + end + if t == false then return; end + self:setflags(false); + self._pausefor = addtimer(t, function () + self._pausefor = nil; + if self.conn and self.conn:dirty() then + self:onreadable(); + end + self:setflags(true); + end); +end + +-- Connected! +function interface:onconnect() + self.onwriteable = nil; + self:setflags(true, false); + if not self._connected then + self._connected = true; + self:on("connect"); + end + return self:onwriteable(); +end + +local function addserver(addr, port, listeners, pattern, tls) + local conn, err = socket.bind(addr, port, cfg.tcp_backlog); + if not conn then return conn, err; end + conn:settimeout(0); + local server = setmetatable({ + conn = conn; + created = gettime(); + listeners = listeners; + _pattern = pattern; + onreadable = interface.onacceptable; + tls = tls; + sockname = addr; + sockport = port; + }, interface_mt); + server:setflags(true, false); + return server; +end + +-- COMPAT +local function wrapclient(conn, addr, port, listeners, pattern, tls) + local client = wrapsocket(conn, nil, pattern, listeners, tls); + if not client.peername then + client.peername, client.peerport = addr, port; + end + client:init(); + return client; +end + +-- New outgoing TCP connection +local function addclient(addr, port, listeners, pattern, tls) + local conn, err = socket.tcp(); + if not conn then return conn, err; end + conn:settimeout(0); + conn:connect(addr, port); + local client = wrapsocket(conn, nil, pattern, listeners, tls) + client:init(); + return client, conn; +end + +-- Dump all data from one connection into another +local function link(from, to) + from.listeners = setmetatable({ + onincoming = function (_, data) + from:pause(); + to:write(data); + end, + }, {__index=from.listeners}); + to.listeners = setmetatable({ + ondrain = function () + from:resume(); + end, + }, {__index=to.listeners}); + from:setflags(true, nil); + to:setflags(nil, true); +end + +-- XXX What uses this? +-- net.adns +function interface:set_send(new_send) + self.send = new_send; +end + +-- Close all connections and servers +local function closeall() + for fd, conn in pairs(fds) do -- luacheck: ignore 213/fd + conn:close(); + end +end + +local quitting = nil; + +-- Signal main loop about shutdown via above upvalue +local function setquitting(quit) + if quit then + quitting = "quitting"; + closeall(); + else + quitting = nil; + end +end + +-- Main loop +local function loop(once) + repeat + local t = runtimers(cfg.max_wait, cfg.min_wait); + local fd, r, w = epoll.wait(t); + if fd then + local conn = fds[fd]; + if conn then + if r then + conn:onreadable(); + end + if w then + conn:onwriteable(); + end + else + log("debug", "Removing unknown fd %d", fd); + epoll.ctl("del", fd); + end + elseif r ~= "timeout" then + log("debug", "epoll_wait error: %s", tostring(r)); + end + until once or (quitting and next(fds) == nil); + return quitting; +end + +return { + get_backend = function () return "epoll"; end; + addserver = addserver; + addclient = addclient; + add_task = addtimer; + at = at; + loop = loop; + closeall = closeall; + setquitting = setquitting; + wrapclient = wrapclient; + link = link; + set_config = function (newconfig) + cfg = setmetatable(newconfig, default_config); + end; + + -- libevent emulation + event = { EV_READ = "r", EV_WRITE = "w", EV_READWRITE = "rw", EV_LEAVE = -1 }; + addevent = function (fd, mode, callback) + local function onevent(self) + local ret = self:callback(); + if ret == -1 then + self:setflags(false, false); + elseif ret then + self:setflags(mode == "r" or mode == "rw", mode == "w" or mode == "rw"); + end + end + + local conn = setmetatable({ + getfd = function () return fd; end; + callback = callback; + onreadable = onevent; + onwriteable = onevent; + close = function (self) + self:setflags(false, false); + fds[fd] = nil; + end; + }, interface_mt); + local ok, err = conn:setflags(mode == "r" or mode == "rw", mode == "w" or mode == "rw"); + if not ok then return ok, err; end + return conn; + end; +}; diff --git a/net/server_event.lua b/net/server_event.lua index 3a907349..fd456deb 100644 --- a/net/server_event.lua +++ b/net/server_event.lua @@ -223,7 +223,8 @@ function interface_mt:_destroy() -- close this interface + events and call last _ = self.eventsession and self.eventsession:close( ) _ = self.eventwritetimeout and self.eventwritetimeout:close( ) _ = self.eventreadtimeout and self.eventreadtimeout:close( ) - _ = 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) + -- call ondisconnect listener (wont be the case if handshake failed on connect) + _ = self.ondisconnect and self:ondisconnect( self.fatalerror ~= "client to close" and self.fatalerror) _ = self.conn and self.conn:close( ) -- close connection _ = self._server and self._server:counter(-1); self.eventread, self.eventwrite = nil, nil @@ -773,7 +774,7 @@ local function setquitting(yes) end local function get_backend() - return base:method(); + return "libevent " .. base:method(); end -- We need to hold onto the events to stop them @@ -811,6 +812,20 @@ local function link(sender, receiver, buffersize) sender:set_mode("*a"); end +local function add_task(delay, callback) + local event_handle; + event_handle = base:addevent(nil, 0, function () + local ret = callback(socket_gettime()); + if ret then + return 0, ret; + elseif event_handle then + return -1; + end + end + , delay); + return event_handle; +end + return { cfg = cfg, base = base, @@ -826,6 +841,7 @@ return { closeall = closeallservers, get_backend = get_backend, hook_signal = hook_signal, + add_task = add_task, __NAME = SCRIPT_NAME, __DATE = LAST_MODIFIED, diff --git a/net/server_select.lua b/net/server_select.lua index 12aef9d8..f051da24 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 @@ -141,7 +138,6 @@ _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 @@ -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 @@ -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 @@ -861,8 +895,15 @@ 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 local handler = _socketlist[ socket ] @@ -910,27 +951,12 @@ 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 closeall(); @@ -977,16 +1003,14 @@ 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 @@ -1002,22 +1026,19 @@ 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 //-- - ----------------------------------// BEGIN //-- 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) @@ -1032,6 +1053,7 @@ end return { _addtimer = addtimer, + add_task = add_task; addclient = addclient, wrapclient = wrapclient, |