basic http post request on local network
Posted: Sun Feb 26, 2017 7:28 amHi there, I am fairly new here. I have a bit of a troubles sending HTTP POST request. It works, but only sometimes.
My setup is following:
Feather HUZZAH ESP 8266 (description)
TP-LINK router
PC Windows 7
The router can see both devices, the Feather HUZZAH has assigned IP 192.168.0.100, the PC has assigned IP 192.168.0.11. The PC is running Hercules with TCP Server listening on port 80 and firewall is disabled. The PC and the ESP8266 can be pinged from router or by independent device on the same network.
The ESP8266 has older firmware 0.9.6 (this one works for me, I have tried scripts searching for wifi, works just fine). It is powered from PC by USB cable. The ESP8266 is running the following .lua script (I have tried both, directly uploaded and compiled as well).
ESP8266 is programmed from ESPlorer, after executing the script, I have following output :
The Hercules on my Windows 7 PC registers client just sparsely (sometimes it registers client with 192.162.0.100 IP), the whole HTTP POST request is delivered even more sparsely.
I am sorry for long code, I hope it is easy to read (it is quite simple). Is there any obvious problem ? What else should I test and how ?
My setup is following:
Feather HUZZAH ESP 8266 (description)
TP-LINK router
PC Windows 7
The router can see both devices, the Feather HUZZAH has assigned IP 192.168.0.100, the PC has assigned IP 192.168.0.11. The PC is running Hercules with TCP Server listening on port 80 and firewall is disabled. The PC and the ESP8266 can be pinged from router or by independent device on the same network.
The ESP8266 has older firmware 0.9.6 (this one works for me, I have tried scripts searching for wifi, works just fine). It is powered from PC by USB cable. The ESP8266 is running the following .lua script (I have tried both, directly uploaded and compiled as well).
Code: Select all
-- variables
wificfg={}
STATUS_REGISTER=0
HTTP_REGISTER=0
SSID_REGISTER=0
GOT_IP_FLAG=3
SSID_RECEIVED_FLAG=4
WIFIPASSWORD_RECEIVED_FLAG=5
CIK_RECEIVED_FLAG=6
HTTP_CONNECTED_FLAG=7
UART_TERMINATOR1='\n'
UART_TERMINATORS='[\r\n]'
CON_LEN_HDR = "Content-Length: <CONLEN>\r\n\r\n"
-- custom HTTP request
ABSOLUTE_URI = "/"
HOST_URI="192.168.0.11"
IP_ADDRESS='192.168.0.11'
-- update status register periodicaly
tmr.alarm(1, 333, 1, function()
STATUS_REGISTER=wifi.sta.status()
STATUS_REGISTER=bit.bor(STATUS_REGISTER,HTTP_REGISTER,SSID_REGISTER)
end)
send_data = function(BODY)
HTTP_WR_HDR = "POST "..ABSOLUTE_URI.." HTTP/1.1\r\nHost: "..HOST_URI.."\r\nContent-Type: text/cml; charset=utf-8\r\nContent-Length: <CONLEN>\r\n\r\n"
CONLEN = string.len(BODY)
HTTP_WR_HDR = string.gsub(HTTP_WR_HDR,"<CONLEN>",CONLEN)
REQ = HTTP_WR_HDR .. BODY
push_request(REQ)
end
--read_data = function(dataz)
--HTTP_RD_HDR = "GET /onep:v1/stack/alias?" .. dataz .. " HTTP/1.1\r\nHost: m2.exosite.com\r\nX-Exosite-CIK: " .. CIK .. "\r\nAccept: application/x-www-form-urlencoded; charset=utf-8\r\n\r\n"
--REQ = HTTP_RD_HDR
--push_request(REQ)
--end
push_request = function(dataz)
-- if connected then send request to server
if bit.isset(HTTP_REGISTER,HTTP_CONNECTED_FLAG) then
hs:send(dataz)
-- else connect and then send, also handle events
else
hs = net.createConnection(net.TCP, 0)
hs:on("connection", function (skt)
HTTP_REGISTER=bit.set(HTTP_REGISTER,HTTP_CONNECTED_FLAG)
-- this is dangerous async stuff
hs:send(dataz)
end)
hs:on("disconnection", function (skt)
HTTP_REGISTER=bit.clear(HTTP_REGISTER,HTTP_CONNECTED_FLAG)
end)
hs:on("receive", function (skt, RESP)
-- TODO: handle HTTP response body properly
httpcode = string.sub(RESP,10,12)
a,b = string.find(RESP,"\r\n\r\n")
resplen = string.len(RESP)
uartresp = string.sub(RESP,b+1,resplen)
uart.write(0, httpcode .. UART_TERMINATOR1)
if string.len(uartresp) > 2 then
uart.write(0, uartresp .. UART_TERMINATOR1)
end
end)
hs:connect(80, IP_ADDRESS)
end
end
function sendhttp()
uart.write(0, STATUS_REGISTER, UART_TERMINATOR1)
local fake_data ="Wsomedata"
local s = string.gsub(fake_data, UART_TERMINATORS, "")
local slen = string.len(s)
local b = string.byte(s,1)
local c = string.sub(s,1,1)
print("here11")
for i = 1, 3, 1 do -- blink LED 50 times
if s == 'uartstop' then
uart.on('data')
if bit.isset(HTTP_REGISTER, HTTP_CONNECTED_FLAG) then
hs:close()
end
end
if b == 0xf0 then
elseif b == 0xf3 then
uart.on('data')
if bit.isset(HTTP_REGISTER, HTTP_CONNECTED_FLAG) then
hs:close()
end
node.restart()
end
if bit.isclear(SSID_REGISTER, SSID_RECEIVED_FLAG) then
wificfg.ssid="nodemcu"
SSID_REGISTER=bit.set(SSID_REGISTER, SSID_RECEIVED_FLAG)
print("here2")
end
if bit.isclear(SSID_REGISTER, WIFIPASSWORD_RECEIVED_FLAG) then
print("here3")
wificfg.pwd="nodemcutesting"
SSID_REGISTER=bit.set(SSID_REGISTER, WIFIPASSWORD_RECEIVED_FLAG)
wifi.setmode(wifi.STATION)
wifi.sta.config(wificfg.ssid, wificfg.pwd)
wifi.sta.autoconnect(1)
print("here4")
tmr.alarm(3, 200, 1, function()
if wifi.sta.getip()== nil then
else
tmr.stop(3)
SSID_REGISTER=bit.set(SSID_REGISTER, GOT_IP_FLAG)
end
end)
print("here5")
end
if c == 'W' and slen > 3 then
dataz=string.sub(s,2,slen)
send_data(dataz .. "\r\n")
tmr.delay(1000000) -- wait for 0.5 sec = 500 000 micro-sec
print("here6")
end
print("here7")
end
end
sendhttp() ESP8266 is programmed from ESPlorer, after executing the script, I have following output :
Code: Select all
> dofile("UART2http_post.lc")
here11
here2
here3
here4
here5
here6
here7
here6
here7
here6
here7The Hercules on my Windows 7 PC registers client just sparsely (sometimes it registers client with 192.162.0.100 IP), the whole HTTP POST request is delivered even more sparsely.
I am sorry for long code, I hope it is easy to read (it is quite simple). Is there any obvious problem ? What else should I test and how ?