51 lines
1.2 KiB
Lua
51 lines
1.2 KiB
Lua
-- implement:
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-- quit/ctrl-d disconnect
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-- security?????
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-- multiclient?
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-- ssh????
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-- environment??????????
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-- a simple telnet server
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-- restart server if needed
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if telnet_srv ~= nil then
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telnet_srv:close()
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end
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telnet_srv = net.createServer(net.TCP, 180)
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telnet_srv:listen(23, function(socket)
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local fifo = {}
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local fifo_drained = true
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local function sender(c)
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if #fifo > 0 then
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c:send(table.remove(fifo, 1))
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else
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fifo_drained = true
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end
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end
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local function s_output(str)
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table.insert(fifo, str)
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if socket ~= nil and fifo_drained then
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fifo_drained = false
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sender(socket)
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end
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end
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node.output(s_output, 1) -- re-direct output to function s_ouput.
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socket:on("receive", function(c, l)
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node.input(l) -- works like pcall(loadstring(l)) but support multiple separate line
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end)
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socket:on("disconnection", function(c)
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node.output(nil) -- un-regist the redirect output function, output goes to serial
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end)
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socket:on("sent", sender)
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print("Welcome to NodeMCU world.")
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end)
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print("Telnet server running...")
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