80 lines
3.1 KiB
Lua
80 lines
3.1 KiB
Lua
-- httpserver
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-- Author: Marcos Kirsch
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-- Starts web server in the specified port.
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return function (port)
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local s = net.createServer(net.TCP, 10) -- 10 seconds client timeout
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s:listen(
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port,
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function (connection)
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-- This variable holds the thread used for sending data back to the user.
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-- We do it in a separate thread because we need to yield when sending lots
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-- of data in order to avoid overflowing the mcu's buffer.
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local connectionThread
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local function onGet(connection, uri)
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local fileServeFunction = nil
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if #(uri.file) > 32 then
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-- nodemcu-firmware cannot handle long filenames.
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uri.args['code'] = 400
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fileServeFunction = dofile("httpserver-error.lc")
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else
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local fileExists = file.open(uri.file, "r")
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file.close()
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if not fileExists then
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uri.args['code'] = 404
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fileServeFunction = dofile("httpserver-error.lc")
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elseif uri.isScript then
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collectgarbage()
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fileServeFunction = dofile(uri.file)
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else
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uri.args['file'] = uri.file
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uri.args['ext'] = uri.ext
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fileServeFunction = dofile("httpserver-static.lc")
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end
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end
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connectionThread = coroutine.create(fileServeFunction)
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--print("Thread created", connectionThread)
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coroutine.resume(connectionThread, connection, uri.args)
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end
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local function onReceive(connection, payload)
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-- print(payload) -- for debugging
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-- parse payload and decide what to serve.
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local req = dofile("httpserver-request.lc")(payload)
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print("Requested URI: " .. req.request)
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if req.methodIsValid then
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if req.method == "GET" then onGet(connection, req.uri)
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else dofile("httpserver-static.lc")(conection, {code=501}) end
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else
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dofile("httpserver-static.lc")(conection, {code=400})
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end
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end
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local function onSent(connection, payload)
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local connectionThreadStatus = coroutine.status(connectionThread)
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-- print (connectionThread, "status is", connectionThreadStatus)
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if connectionThreadStatus == "suspended" then
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-- Not finished sending file, resume.
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-- print("Resume thread", connectionThread)
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coroutine.resume(connectionThread)
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elseif connectionThreadStatus == "dead" then
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-- We're done sending file.
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-- print("Done thread", connectionThread)
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connection:close()
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connectionThread = nil
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end
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end
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connection:on("receive", onReceive)
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connection:on("sent", onSent)
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end
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)
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print("nodemcu-httpserver running at http://" .. wifi.sta.getip() .. ":" .. port)
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return s
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end
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