TCP Binding - can't get it to work properly

Jonas88 · March 5, 2018, 6:11am

Platform information:
Raspberry Pi 3, latest java
- openHAB version:
  OH 2.2
- Items configuration related to the issue:

String WoZi_String_Temperatur "Wohnzimmertemperatur" {tcp="<[192.168.178.90:3000:'REGEX((.*))']"}

Services configuration related to the issue

port=3000

If logs where generated please post these here using code fences:

java.nio.channels.NotYetBoundException: null

	at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:237) [?:?]

	at org.openhab.binding.tcp.AbstractSocketChannelBinding.execute(AbstractSocketChannelBinding.java:1396) [251:org.openhab.binding.tcp:1.11.0]

	at org.openhab.core.binding.AbstractActiveBinding$BindingActiveService.execute(AbstractActiveBinding.java:144) [200:org.openhab.core.compat1x:2.2.0]

	at org.openhab.core.service.AbstractActiveService$RefreshThread.run(AbstractActiveService.java:166) [200:org.openhab.core.compat1x:2.2.0]

2018-03-04 12:14:10.428 [ERROR] [b.core.service.AbstractActiveService] - Error while executing background thread TCP Refresh Service

and since today:

2018-03-05 07:02:50.825 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:11654

2018-03-05 07:02:50.827 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:11654

2018-03-05 07:03:23.144 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:11558

2018-03-05 07:03:23.148 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:11558

2018-03-05 07:03:55.697 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:21847

2018-03-05 07:03:55.699 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:21847

2018-03-05 07:04:28.251 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:5379

2018-03-05 07:04:28.253 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:5379

2018-03-05 07:05:00.570 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:30474

2018-03-05 07:05:00.572 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:30474

2018-03-05 07:05:33.172 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:5211

2018-03-05 07:05:33.174 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:5211

2018-03-05 07:06:05.733 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:28281

2018-03-05 07:06:05.735 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:28281

2018-03-05 07:06:38.041 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Received connection request from /192.168.178.101:17006

2018-03-05 07:06:38.044 [INFO ] [ing.tcp.AbstractSocketChannelBinding] - Disconnecting the unallowed remote end /192.168.178.101:17006

I am trying to send some string data from an arduino (client).
One question (i tried both):
Do i have to set up a new ip adress for the server config (i think so) or do i have to use the one from my raspberry pi?
Is the server only confiugued in the items-file? i could not find a setting option in the .cfg-file.

Can you see, what i am doing wrong?

Thank you!

wykat · June 25, 2018, 9:56am

I’m having the same problem with OH1 and it’s really strange as sometimes I’m able to connect with Socat - TCP:IP:port and entered text is shown in the sitemap screen.

String  Zoneminder      "Zoneminder motion detected [%s]"       (gAlarm)        { tcp="<[192.168.2.225:*:'REGEX((.*))']" }

Group   item=gAlarm     label="Alarm"           icon="alarm"

It looks like it has something to do with the option addressmask. As soon as I change this setting (e.g. 127.0.0.1:*) openhab goes in an error loop with:

java.lang.NullPointerException: null
        at org.openhab.binding.tcp.AbstractSocketChannelBinding$Channel.<init>(AbstractSocketChannelBinding.java:139) ~[na:na]
        at org.openhab.binding.tcp.AbstractSocketChannelBinding.execute(AbstractSocketChannelBinding.java:1219) ~[na:na]
        at org.openhab.core.binding.AbstractActiveBinding$BindingActiveService.execute(AbstractActiveBinding.java:156) ~[na:na]
        at org.openhab.core.service.AbstractActiveService$RefreshThread.run(AbstractActiveService.java:173) ~[na:na]

namraccr · June 25, 2018, 11:49pm

Please use code fences.

wykat · June 26, 2018, 8:01am

Updated with code fences.

I don’t know java but it looks like it’s going wrong in org.openhab.binding.tcp.AbstractSocketChannelBinding.java here:

                        logger.info(
                                "Received connection request from {}",
                                newChannel.getRemoteAddress());

                        Channel firstChannel = channels
                                .getFirstNotServed(Direction.IN,
                                        (InetSocketAddress) newChannel
                                                .getRemoteAddress());

                        if (firstChannel != null) {
.
.
.
                           } else {
                                logger.info(
                                        "Disconnecting the remote end {} that tries to connect an outbound only port",
                                        newChannel.getRemoteAddress());
                                newChannel.close();
                            }

How can I just ignore the port check?

namraccr · June 26, 2018, 11:44pm

It seems this is not related to the original topic.
I suggest starting a new thread. You should include the tcp binding configuration you’re using.

wykat · June 30, 2018, 8:32am

I’ve solved it after debugging with IDE

Changed the IP address in the item to * and it worked immediatelly

String  Zoneminder      "Zoneminder motion detected [%s]"       (gAlarm)        { tcp="<[*:*:'REGEX((.*))']" }

wykat · July 3, 2018, 12:31pm

Noted a second thing (haven’t counter checked the impact of my 1st solution), when you change something in openhab.cfg, openhab completely restarts. When you ‘only’ change an item, only the items are reloaded and the TCP plugin claims, “port is already in use”.
After a ‘real’ OH restart the TCP addon does work correctly.
So when I changed the plugin, OH was completely restarted. This may have been a reason it suddenly worked again.