How to correctly CURD a tcp socket?

[Edenming 0]

 

Problem Solved. Configuration file problem.

 

I'm having trouble with the tcp component. The connection always returned with an error "connection lost" using the following codes:

local com = require("component")
local comp = require("computer")
local inet = com.internet
local sock = inet.connect("SOME_IP_ADDRESS",13333) -- this represents the IP address, e.g. 172.25.1.1

local reason, connected, i

sock.setTimeout(10)

for i = 1, 100, 1 do
    connected, reason = sock.finishConnect()
    if connected then
        break
    end
    os.sleep(.05)
end

if not connected then
    error(tostring(reason or "No Conn, oth reason"))
end

The IP address and port is accessible via my C# socket client, but not here. I have no idea what happend...

Does anyone know how to do this correctly? Thank you guys.