ESP8266-HTTP/httpDL.lua at master · aeickho/ESP8266-HTTP · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
-- ESP8266-HTTP Library
-- Written 2014 by Tobias Mädel (t.maedel@alfeld.de)
-- Licensed unter MIT

local moduleName = ...
local M = {}
_G[moduleName] = M

function M.download(host, port, url, path, callback)
	file.open(path, "w+")

	conn=net.createConnection(net.TCP, false)
	conn:on("receive", function(conn, payload)
		payloadFound = false

		if (payloadFound == true) then
			file.write(payload)
			file.flush()
		else
			if (string.find(payload,"\r\n\r\n") ~= nil) then
				file.write(string.sub(payload,string.find(payload,"\r\n\r\n") + 4))
				file.flush()
				payloadFound = true
			end
		end

		payload = nil
		collectgarbage()
	end)
	conn:on("disconnection", function(conn)
		conn = nil
		file.close()
		callback("ok")
	end)
	conn:connect(port,host)
	conn:send("GET /"..url.." HTTP/1.0\r\n"..
			  "Host: "..host.."\r\n"..
			  "Connection: close\r\n"..
			  "Accept-Charset: utf-8\r\n"..
			  "Accept-Encoding: \r\n"..
			  "Accept: */*\r\n\r\n")
end
return M