copas connecting to tcp server cannot receive percentage

[rocfusion]

Hi,

Ok so I have a resident script using a copas udp server on the localhost to receive commands from knx objects (event script) , then there is a copas tcp client connecting to an tcp server on the local network. I did it this way so they don't block each other.  The issue I am experiencing is that when the tcp server sends out an percentage character the tcp client stops receiving anything else from the server.

Does someone have an idea?

Thanks,

Roger

Code:

if not ready then  socket = require("socket")  copas = require("copas")  alert('not Ready')  ready=true    function parse(data)    alert('parsing...  '..data)  end      function fromKNX(command)   alert('from KNX.. '..command)  end    local server = socket.udp()  server:setsockname("127.0.0.1",23456)  function handler(skts)    skts = copas.wrap(skts)    alert("UDP connection handler")    while true do      local s, err      alert("UDP receiving...")      s, erro = skts:receive(2048)      if not s then        alert("UDP Receive error: ", erro)        break      end      alert("Received data, bytes: "..s)      fromKNX(s)    end  end  copas.addserver(server, handler, 1)   end if not skt then  alert('not socket')  if skt then    skt:close()    skt = nil  end  -- create tcp client  skt, err = socket.connect('10.10.10.41', 4999)  skt:settimeout(0)  copas.addthread(function()      while true do       local resp,err = copas.receive(skt)        if not resp then          alert("TCP Receive error: ", err)          break        end        parse(resp)      end    end)  -- connect ok, reset buffer  if skt then    alert('[tcp-client] connection ok')    warningfailed = true    init()    -- error while connecting,  else    if warningfailed then alert('[tcp-client] connection failed (conn): %s', err) end    warningfailed = false  end   end copas.loop()

[admin]

Default receive behaviour is to read a single so it will not return until a new line ("\n") character is found in the buffer. Are you sure the server is sending it correctly?

[rocfusion]

Hi Admin,

Yes, I am testing with the hercules tcp server. for example, i send

1234
12345%

and I don't see 12345% as a alert.

If I then restart the script and send %% then I receive a single % in the alert and then I can continue sending from the tcp server and the client resident script continues to alert the received data.

Thanks,

Roger

---

You can get the hercules app from http://www.hw-group.com/products/hercules/index_en.html

[admin]

Alert behaves like string.format and if you pass 12345% it will result in an error. This will be fixed in RC4. For now, just change alert to log.

[rocfusion]

Hi,

So I changed the copas.addthread function.

Code:

 copas.addthread(function()      while true do       local resp,err = copas.receive(skt,'*l')        if not resp then          alert("Jandy Receive error: ", err)          copas.removeserver(skt)          skt = nil                    break        end        parse(resp)      end    end)

Now when I send % I see in the alerts
there was an error/usr/share/lua/genohm-scada.lua:0: bad argument #2 to 'format' (no value)

Any ideas?

Thanks,


Roger

[admin]

Code:

function parse(data)   alert('parsing: %s', data) end

[rocfusion]

Ok, wow... so everything was blocking because the alert statement couldn't concatenate the string?


Big thanks Admin


Thanks,


Roger