net and tmr conflict

[myplacedk]

I've been having issues with creating TCP connections, and I've finally narrowed it down to be some kind of conflict between net and tmr. I can recreate it reliably with this script:

print(wifi.sta.getip()) -- Just to confirm it's connected
tmr.delay(1000000)
conn=net.createConnection(net.TCP, false) 
conn:on("connection", function(conn)
    print("Connected")
    conn:send("GET / HTTP/1.1\r\nHost: www.nodemcu.com\r\n"
        .."Connection: keep-alive\r\nAccept: */*\r\n\r\n")
end)
conn:on("sent", function(conn)
    print("Sent data")
end)
conn:on("receive", function(conn, pl)
    print("Received data")
    conn:close()
end)
conn:on("disconnection", function(conn)
    print("Disconnected")
end)
print("Connecting...")
conn:connect(80,"121.41.33.127")

init.lua is empty and I run the script a few seconds after reset. I get this:

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NodeMCU 0.9.5 build 20150127  powered by Lua 5.1.4
> dofile('test.lua')
192.168.0.103   255.255.255.0   192.168.0.1
Connecting...
> Connected
Disconnected

Sometimes I don't get "Connected". Sometimes I don't even get "Disconnected" until next time I try to open a connections.

If I comment out the delay, I get this (sometimes I have to power-cycle the ESP8266 before it works):

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��‹ƒ�‡£�¡Cá
NodeMCU 0.9.5 build 20150127  powered by Lua 5.1.4
> dofile('test.lua')
192.168.0.103   255.255.255.0   192.168.0.1
Connecting...
> Connected
Sent data
Received data
Disconnected

I've tried several of the recent pre_build firmwares, and I had problems with all of them. However this exact example is only tested on the latest firmware.

[nodemcu]

tmr.delay will stop everything. include wifi beacon.
so after tmr.delay for a long time. your wifi connection will be beacon time out.
you have to reconnect to ap.
tmr.delay are not recommended in long time(1 second) delay.
please use tmr.alarm instead.

[myplacedk]

That makes sense. I already implemented tmr.alarm as a workaround. I'll add a comment in the wiki later, if nobody else does it first.

[nodemcu]

thanks.