Hi,
it’s one of the standard and basic „can’t receive message" problem questions,
but I’m not able to spot the error...
I have implemented a simple client and a server using PUB/SUB in java using
jeromq 0.3.2 according to the examples in the wiki.
If I execute both programms locally, the client receives data. If I deploy the
same client jar without change on a remote computer and run it, I don't receive
any messages.
The client is always using the ip (not „localhost" as hard coded string) of the
server in both cases. Thus no changes here for the remote deployment.
Firewall should not be an issue either, as the netstat excerpt below shows
(Interestingly netstat -a for 0.3.2 shows the below entry, 0.3.4 does not…).
The server (for test purpose my Macbook Air) does also not block any outgoing
traffic.
Any hints? Somehow I'm not able to spot the error (probably something stupid,
but too blind to see…)
Server.java
ZMQ.Context context = ZMQ.context(1);
ZMQ.Socket publisher = context.socket(ZMQ.PUB);
publisher.bind("tcp://*:5556");
Client.java
ZMQ.Context context = ZMQ.context(1);
ZMQ.Socket subscriber = zmqContext.socket(ZMQ.SUB);
subscriber.connect("tcp://192.168.178.21:5556");
subscriber.subscribe("".getBytes());
Firewall shouldn't be an issue either
netstat -a | grep 5556
says
tcp 0 1 192.168.178.29:38145 192.168.178.21:5556 SYN_SENT
Finally my iptables config, just in case I made a stupid configuration mistake
here.
*filter
:INPUT DROP [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [1161:105847]
-A INPUT -i lo -j ACCEPT
-A INPUT -s 192.168.178.0/24 -j ACCEPT
COMMIT
Best regards,
Andreas_______________________________________________
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