Hi!
I have been working with the TCP-out node for a couple weeks and I am observing a strange behavior on all my servers.
When I use a TCP-out node in order to send a message to an external server it works only erratically. This means sometime the message reaches the external server sometimes not. Sometimes it works after moving the node and (full) redeploy, sometimes not. This behavior is identical when connecting to different external servers as well as when using different node-red servers trying to connect to external servers.
With external servers I mean mostly other servers within the same local network.
I also looked into the TCP-request node as it might be better suited to what I am trying to do. Which is: send data to a TCP port and close the connection. If the external server sends a reply, fine, if not, also fine. The TCP-request node seems to give me the reply as well. I tried using it, but havent got it to work at all yet.
What I tried:
- moving the TCP-out node and redeploy => works sometimes
- restart node-red => no difference
- just try another day (while server was running normally) => works sometimes
Is there something I am missing?
Maybe some permission on linux basis for the node-red user, like the dialout permission to use the serial port? tcp-port is always above 1024, so no root permission needed?
Thanks for any pointers!
Cheers
Edit: I have in another flow the same TCP-out node, same configuration (literally copied) and it works every single time. Could it be that I cannot have multiple TCP-out nodes with the same host and port?
my flow:
[ { "id": "2a8456b600162ad0", "type": "tab", "label": "Flow 4", "disabled": false, "info": "", "env": [] }, { "id": "383b1e6bb59890e9", "type": "tcp out", "z": "2a8456b600162ad0", "name": "", "host": "10.12.34.47", "port": "9100", "beserver": "client", "base64": false, "end": true, "tls": "", "x": 720, "y": 240, "wires": [] }, { "id": "9d73fd90bb2fea5b", "type": "inject", "z": "2a8456b600162ad0", "name": "", "props": [ { "p": "payload" }, { "p": "topic", "vt": "str" } ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payload": "", "payloadType": "date", "x": 260, "y": 240, "wires": [ [ "19ed156a81c4b731" ] ] }, { "id": "19ed156a81c4b731", "type": "function", "z": "2a8456b600162ad0", "name": "create label", "func": "// message to label printer\nmsg.payload = \"^XA~TA020^CI28^LH0,0^CF0,40,32\"\n +\"^FX(std text)^FS\"\n +\"^FO30,80^FDbla bla^FS\"\n +\"^FX(device name, space for word wrap over 3 lines)^FS\"\n +\"^FO30,130^FB580,3^FDtext text text text text text ^FS\"\n +\"^FX(___ID)^FS\"\n +\"^A0N,24,20 ^FO30,350^FDID^FS\"\n +\"^FX(optional: _____ID)^FS\"\n +\"^A0N,24,20 ^FO90,350^FD ^FS\"\n +\"^MMC^XZ\"\n\nreturn msg;\n", "outputs": 1, "timeout": 0, "noerr": 0, "initialize": "", "finalize": "", "libs": [], "x": 450, "y": 240, "wires": [ [ "76bc83896705a9a7", "383b1e6bb59890e9" ] ] }, { "id": "76bc83896705a9a7", "type": "debug", "z": "2a8456b600162ad0", "name": "debug 273", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "true", "targetType": "full", "statusVal": "", "statusType": "auto", "x": 690, "y": 300, "wires": [] }, { "id": "3c94e577453e1fa8", "type": "tcp request", "z": "2a8456b600162ad0", "name": "", "server": "10.12.34.47", "port": "9100", "out": "time", "ret": "string", "splitc": "10000", "newline": "", "trim": false, "tls": "", "x": 720, "y": 380, "wires": [ [ "74a708488d56c31f" ] ] }, { "id": "74a708488d56c31f", "type": "debug", "z": "2a8456b600162ad0", "name": "debug 274", "active": true, "tosidebar": true, "console": false, "tostatus": false, "complete": "true", "targetType": "full", "statusVal": "", "statusType": "auto", "x": 930, "y": 380, "wires": [] }]
