diff options
Diffstat (limited to 'lib/support/socket.lua')
-rw-r--r-- | lib/support/socket.lua | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/lib/support/socket.lua b/lib/support/socket.lua deleted file mode 100644 index 211adcd..0000000 --- a/lib/support/socket.lua +++ /dev/null @@ -1,133 +0,0 @@ ------------------------------------------------------------------------------ --- LuaSocket helper module --- Author: Diego Nehab --- RCS ID: $Id: socket.lua,v 1.22 2005/11/22 08:33:29 diego Exp $ ------------------------------------------------------------------------------ - ------------------------------------------------------------------------------ --- Declare module and import dependencies ------------------------------------------------------------------------------ -local base = _G -local string = require("string") -local math = require("math") -local socket = require("socket.core") -module("socket") - ------------------------------------------------------------------------------ --- Exported auxiliar functions ------------------------------------------------------------------------------ -function connect(address, port, laddress, lport) - local sock, err = socket.tcp() - if not sock then return nil, err end - if laddress then - local res, err = sock:bind(laddress, lport, -1) - if not res then return nil, err end - end - local res, err = sock:connect(address, port) - if not res then return nil, err end - return sock -end - -function bind(host, port, backlog) - local sock, err = socket.tcp() - if not sock then return nil, err end - sock:setoption("reuseaddr", true) - local res, err = sock:bind(host, port) - if not res then return nil, err end - res, err = sock:listen(backlog) - if not res then return nil, err end - return sock -end - -try = newtry() - -function choose(table) - return function(name, opt1, opt2) - if base.type(name) ~= "string" then - name, opt1, opt2 = "default", name, opt1 - end - local f = table[name or "nil"] - if not f then base.error("unknown key (".. base.tostring(name) ..")", 3) - else return f(opt1, opt2) end - end -end - ------------------------------------------------------------------------------ --- Socket sources and sinks, conforming to LTN12 ------------------------------------------------------------------------------ --- create namespaces inside LuaSocket namespace -sourcet = {} -sinkt = {} - -BLOCKSIZE = 2048 - -sinkt["close-when-done"] = function(sock) - return base.setmetatable({ - getfd = function() return sock:getfd() end, - dirty = function() return sock:dirty() end - }, { - __call = function(self, chunk, err) - if not chunk then - sock:close() - return 1 - else return sock:send(chunk) end - end - }) -end - -sinkt["keep-open"] = function(sock) - return base.setmetatable({ - getfd = function() return sock:getfd() end, - dirty = function() return sock:dirty() end - }, { - __call = function(self, chunk, err) - if chunk then return sock:send(chunk) - else return 1 end - end - }) -end - -sinkt["default"] = sinkt["keep-open"] - -sink = choose(sinkt) - -sourcet["by-length"] = function(sock, length) - return base.setmetatable({ - getfd = function() return sock:getfd() end, - dirty = function() return sock:dirty() end - }, { - __call = function() - if length <= 0 then return nil end - local size = math.min(socket.BLOCKSIZE, length) - local chunk, err = sock:receive(size) - if err then return nil, err end - length = length - string.len(chunk) - return chunk - end - }) -end - -sourcet["until-closed"] = function(sock) - local done - return base.setmetatable({ - getfd = function() return sock:getfd() end, - dirty = function() return sock:dirty() end - }, { - __call = function() - if done then return nil end - local chunk, err, partial = sock:receive(socket.BLOCKSIZE) - if not err then return chunk - elseif err == "closed" then - sock:close() - done = 1 - return partial - else return nil, err end - end - }) -end - - -sourcet["default"] = sourcet["until-closed"] - -source = choose(sourcet) - |