diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/server_event.lua | 48 | ||||
| -rw-r--r-- | net/server_select.lua | 39 |
2 files changed, 83 insertions, 4 deletions
diff --git a/net/server_event.lua b/net/server_event.lua index dde13e61..43e70a0f 100644 --- a/net/server_event.lua +++ b/net/server_event.lua @@ -282,8 +282,21 @@ do return nointerface, noreading, nowriting end + --TODO: Deprecate function interface_mt:lock_read(switch) - return self:_lock(self.nointerface, switch, self.nowriting); + if switch then + return self:pause(); + else + return self:resume(); + end + end + + function interface_mt:pause() + return self:_lock(self.nointerface, true, self.nowriting); + end + + function interface_mt:resume() + return self:_lock(self.nointerface, false, self.nowriting); end function interface_mt:counter(c) @@ -389,6 +402,13 @@ do self.starttls = false; -- prevent starttls() end end + + function interface_mt:set_mode(pattern) + if pattern then + self._pattern = pattern; + end + return self._pattern; + end function interface_mt:set_send(new_send) -- No-op, we always use the underlying connection's send @@ -445,6 +465,8 @@ do end function interface_mt:ontimeout() end + function interface_mt:ondrain() + end function interface_mt:onstatus() debug("server.lua: Dummy onstatus()") end @@ -525,6 +547,7 @@ do if succ then -- writing succesful interface.writebuffer = "" interface.writebufferlen = 0 + interface:ondrain(); if interface.fatalerror then debug "closing client after writing" interface:_close() -- close interface if needed @@ -586,7 +609,7 @@ do interface.eventreadtimeout = nil end end - local buffer, err, part = interface.conn:receive( pattern ) -- receive buffer with "pattern" + local buffer, err, part = interface.conn:receive( interface._pattern ) -- receive buffer with "pattern" --vdebug( "read data:", tostring(buffer), "error:", tostring(err), "part:", tostring(part) ) buffer = buffer or part or "" local len = string_len( buffer ) @@ -822,11 +845,32 @@ function hook_signal(signal_num, handler) return signal_events[signal_num]; end +local function link(sender, receiver, buffersize) + sender:set_mode(buffersize); + local sender_locked; + + function receiver:ondrain() + if sender_locked then + sender:resume(); + sender_locked = nil; + end + end + + function sender:onincoming(data) + receiver:write(data); + if receiver.writebufferlen >= buffersize then + sender_locked = true; + sender:pause(); + end + end +end + return { cfg = cfg, base = base, loop = loop, + link = link, event = event, event_base = base, addevent = newevent, diff --git a/net/server_select.lua b/net/server_select.lua index 94461f45..8a4d917d 100644 --- a/net/server_select.lua +++ b/net/server_select.lua @@ -252,6 +252,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport local dispatch = listeners.onincoming local status = listeners.onstatus local disconnect = listeners.ondisconnect + local drain = listeners.ondrain local bufferqueue = { } -- buffer array local bufferqueuelen = 0 -- end of buffer array @@ -284,6 +285,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport dispatch = listeners.onincoming disconnect = listeners.ondisconnect status = listeners.onstatus + drain = listeners.ondrain end handler.getstats = function( ) return readtraffic, sendtraffic @@ -379,7 +381,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport handler.socket = function( self ) return socket end - handler.pattern = function( self, new ) + handler.set_mode = function( self, new ) pattern = new or pattern return pattern end @@ -392,6 +394,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport maxreadlen = readlen or maxreadlen return bufferlen, maxreadlen, maxsendlen end + --TODO: Deprecate handler.lock_read = function (self, switch) if switch == true then local tmp = _readlistlen @@ -409,6 +412,12 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport end return noread end + handler.pause = function (self) + return self:lock_read(true); + end + handler.resume = function (self) + return self:lock_read(false); + end handler.lock = function( self, switch ) handler.lock_read (switch) if switch == true then @@ -430,7 +439,7 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport end local _readbuffer = function( ) -- this function reads data local buffer, err, part = receive( socket, pattern ) -- receive buffer with "pattern" - if not err or (err == "wantread" or err == "timeout") or (part and string_len(part) > 0) then -- received something + if not err or (err == "wantread" or err == "timeout") then -- received something local buffer = buffer or part or "" local len = string_len( buffer ) if len > maxreadlen then @@ -472,6 +481,9 @@ wrapconnection = function( server, listeners, socket, ip, serverport, clientport _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) -- delete socket from writelist _ = needtls and handler:starttls(nil, true) _writetimes[ handler ] = nil + if drain then + drain(handler) + end _ = toclose and handler:close( ) return true elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write @@ -666,6 +678,28 @@ closesocket = function( socket ) --mem_free( ) end +local function link(sender, receiver, buffersize) + sender:set_mode(buffersize); + local sender_locked; + local _sendbuffer = receiver.sendbuffer; + function receiver.sendbuffer() + _sendbuffer(); + if sender_locked and receiver.bufferlen() < buffersize then + sender:lock_read(false); -- Unlock now + sender_locked = nil; + end + end + + local _readbuffer = sender.readbuffer; + function sender.readbuffer() + _readbuffer(); + if not sender_locked and receiver.bufferlen() >= buffersize then + sender_locked = true; + sender:lock_read(true); + end + end +end + ----------------------------------// PUBLIC //-- addserver = function( addr, port, listeners, pattern, sslctx ) -- this function provides a way for other scripts to reg a server @@ -889,6 +923,7 @@ return { wrapclient = wrapclient, loop = loop, + link = link, stats = stats, closeall = closeall, addtimer = addtimer, |