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-rw-r--r--net/connlisteners.lua2
-rw-r--r--net/cqueues.lua74
-rw-r--r--net/httpserver.lua2
-rw-r--r--net/server.lua114
-rw-r--r--net/server_epoll.lua641
-rw-r--r--net/server_event.lua15
-rw-r--r--net/server_select.lua90
7 files changed, 858 insertions, 80 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/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..b3d24c7b
--- /dev/null
+++ b/net/server_epoll.lua
@@ -0,0 +1,641 @@
+-- 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 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;
+
+assert(socket.tcp6 and socket.tcp4, "Incompatible LuaSocket version");
+
+local _ENV = nil;
+
+local cfg = {
+ read_timeout = 900;
+ write_timeout = 7;
+ tcp_backlog = 128;
+ accept_retry_interval = 10;
+ read_retry_delay = 1e-06;
+ connect_timeout = 20;
+ handshake_timeout = 60;
+};
+
+local fds = createtable(10, 0); -- FD -> conn
+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()
+ 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
+
+ --[[ Is it worth it to skip the noop calls?
+ for i = #timers, 1, -1 do
+ if timers[i][2] == noop then
+ timers[i] = nil;
+ else
+ break;
+ end
+ end
+ --]]
+
+ local next_delay = 86400;
+
+ -- 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];
+ local now = gettime(); -- inside or before the loop?
+ 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
+ timer[1] = t + new_timeout;
+ resort_timers = true;
+ else
+ t_remove(timers, i);
+ end
+ end
+ if resort_timers or next_delay < 1e-6 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 = 1e-6;
+ end
+ return next_delay;
+end
+
+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
+
+function interface:setlistener(listeners)
+ self:on("detach");
+ self.listeners = listeners;
+end
+
+-- Call callback
+function interface:on(what, ...)
+ 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
+
+function interface:getfd()
+ if self.conn then
+ return self.conn:getfd();
+ end
+ return -1;
+end
+
+function interface:ip()
+ return self.peername or self.sockname;
+end
+
+function interface:port()
+ return self.sockport or self.peerport;
+end
+
+function interface:clientport()
+ return self.sockport;
+end
+
+function interface:serverport()
+ if self.sockport then
+ return self.sockport;
+ elseif self.server then
+ self.server:port();
+ end
+end
+
+function interface:socket()
+ return self.conn;
+end
+
+function interface:setoption(k, v)
+ -- LuaSec doesn't expose setoption :(
+ if self.conn.setoption then
+ self.conn:setoption(k, v);
+ end
+end
+
+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
+
+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
+
+function interface:flags()
+ if self._wantread then
+ if self._wantwrite then
+ return "rw";
+ end
+ return "r";
+ elseif self._wantwrite then
+ return "w";
+ end
+end
+
+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
+ self._flags = flags;
+ return true;
+end
+
+-- Called when socket is readable
+function interface:onreadable()
+ local data, err, partial = self.conn:receive(self._pattern);
+ if self.conn:dirty() then
+ self:setreadtimeout(false);
+ self:pausefor(cfg.read_retry_delay);
+ else
+ self:setreadtimeout();
+ end
+ if data or partial then
+ self:on("incoming", data or partial, err);
+ end
+ if err == "wantread" then
+ self:setflags(true, nil);
+ elseif err == "wantwrite" then
+ self:setflags(nil, true);
+ elseif not data and err ~= "timeout" then
+ self:on("disconnect", err);
+ self:destroy()
+ return;
+ 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;
+ elseif 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 and err ~= "timeout" then
+ self:on("disconnect", err);
+ self:destroy();
+ end
+end
+
+function interface:ondrain()
+ if self._toclose then
+ return self:close();
+ elseif self._starttls then
+ return self:starttls();
+ else
+ return self:on("drain");
+ end
+end
+
+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;
+
+function interface:close()
+ if self._wantwrite 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._toclose = true;
+ 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;
+ fds[self:getfd()] = nil;
+ 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._starttls = true;
+ 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._starttls = 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:setflags(true, true);
+ local old = self._tls;
+ self._tls = true;
+ self.starttls = false;
+ if old == false then
+ self.onwriteable = interface.onconnect;
+ self:setflags(false, true);
+ self:setwritetimeout();
+ else
+ self:setflags(true, true);
+ self:on("status", "ssl-handshake-complete");
+ end
+ 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._pattern;
+ onwriteable = interface.onconnect;
+ 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
+
+ fds[conn:getfd()] = conn;
+ return conn;
+end
+
+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
+
+function interface:init()
+ if self.tls and not self._tls then
+ self._tls = false; -- This means we should call onconnect when TLS is up
+ return self:starttls();
+ else
+ self:setflags(false, true);
+ self:setwritetimeout(cfg.connect_timeout);
+ end
+end
+
+function interface:pause()
+ self:setflags(false);
+end
+
+function interface:resume()
+ self:setflags(true);
+end
+
+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;
+ self:setflags(true);
+ if self.conn:dirty() then
+ self:onreadable();
+ end
+ end);
+end
+
+function interface:onconnect()
+ self.onwriteable = nil;
+ self:on("connect");
+ self:setflags(true);
+ 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);
+ fds[server:getfd()] = server;
+ 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
+
+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
+
+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
+
+local quitting = nil;
+
+local function setquitting()
+ quitting = "quitting";
+end
+
+local function loop()
+ repeat
+ local t = runtimers();
+ 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 quitting;
+ return quitting;
+end
+
+return {
+ get_backend = function () return "epoll"; end;
+ addserver = addserver;
+ addclient = addclient;
+ add_task = addtimer;
+ at = at;
+ loop = loop;
+ setquitting = setquitting;
+ wrapclient = wrapclient;
+ link = link;
+
+ -- 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
+ epoll.ctl("del", fd);
+ elseif ret then
+ epoll.ctl("mod", fd, mode);
+ end
+ end
+
+ local conn = {
+ callback = callback;
+ onreadable = onevent;
+ onwriteable = onevent;
+ close = function ()
+ fds[fd] = nil;
+ return epoll.ctl("del", fd);
+ end;
+ };
+ fds[fd] = conn;
+ local ok, err = epoll.ctl("add", fd, mode or "r");
+ if not ok then return ok, err; end
+ return conn;
+ end;
+};
diff --git a/net/server_event.lua b/net/server_event.lua
index 2cb45553..c10173e4 100644
--- a/net/server_event.lua
+++ b/net/server_event.lua
@@ -806,6 +806,20 @@ 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,
@@ -821,6 +835,7 @@ 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 02839062..0776b02e 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
@@ -516,7 +511,6 @@ 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
@@ -556,7 +550,6 @@ 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
@@ -805,7 +798,6 @@ end
getsettings = function( )
return {
select_timeout = _selecttimeout;
- select_sleep_time = _sleeptime;
tcp_backlog = _tcpbacklog;
max_send_buffer_size = _maxsendlen;
max_receive_buffer_size = _maxreadlen;
@@ -824,7 +816,6 @@ 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
@@ -847,6 +838,49 @@ 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
@@ -860,8 +894,15 @@ 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 ]
@@ -909,27 +950,12 @@ 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();
@@ -976,16 +1002,14 @@ 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
@@ -1001,22 +1025,19 @@ 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)
@@ -1031,6 +1052,7 @@ end
return {
_addtimer = addtimer,
+ add_task = add_task;
addclient = addclient,
wrapclient = wrapclient,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 23:24:38 +0000