Re: [mosquitto-dev] Bind Address For Websockets

["Chris ." <chris_flcpc@xxxxxxxxxxx>]

OK, so I'm guessing this is never going to work for mosquitto websockets at the moment because of libwebsockets.

I've had a browse through the following and note that IP addresses are suspicious by their absence in libwebsockets as the latter seems to use interfaces instead:

mosq_websockets_init()
libwebsocket_create_context()
lws_context_init_server() -> in fact does an explicit  "serv_addr4.sin_addr.s_addr = INADDR_ANY" by default

It would be nice, maybe, if mosquitto.conf and mosq_websockets_init ()supported the use of an "iface" parameter for websockets on the listener line, so I could specify the loopback or a virtual to force my bind address as I wished.


Many thanks for the great software & keep up the good work,
Chris.



---

Hi,

I am running mosquitto version 1.4.3 (build date Wed, 19 Aug 2015 12:10:03 +0100) and am having trouble getting mosquitto to bind to specific IP addresses for websockets connections. It seems to work fine for 1883 & 8883.  Am I missing something ?

Here is my config:

# CAN bind port 1883 to any address
listener 1883 127.0.0.1
protocol mqtt

# CAN bind port 8883 to any address
listener 8883 127.0.0.1
##listener 8883
cafile /etc/mosquitto/ca_certificates/server-cafile.pem
certfile /etc/mosquitto/certs/server-certificate.pem
keyfile /etc/mosquitto/certs/server-private-key.pem

# CANNOT bind port 8080 to any address - it binds to 0.0.0.0
listener 8080 127.0.0.1
protocol websockets

# CANNOT bind port 8081 to any address - It binds to 0.0.0.0
listener 8081 127.0.0.1
protocol websockets
cafile /etc/mosquitto/ca_certificates/server-cafile.pem
certfile /etc/mosquitto/certs/server-certificate.pem
keyfile /etc/mosquitto/certs/server-private-key.pem

With the following results:

# uname -a
Linux iotgroup-07818742 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

# netstat -an | grep -i LIST
tcp        0      0 127.0.0.1:1883          0.0.0.0:*               LISTEN    
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN    
tcp        0      0 0.0.0.0:8081            0.0.0.0:*               LISTEN    
tcp        0      0 127.0.0.1:8883          0.0.0.0:*               LISTEN    


No obvious error messages:

1441046179: Opening ipv4 listen socket on port 1883.
1441046179: Opening ipv4 listen socket on port 8883.
1441046179: Opening websockets listen socket on port 8080.
1441046179: Opening websockets listen socket on port 8081.
1441046193: mosquitto version 1.4.3 terminating
1441046193: mosquitto version 1.4.3 (build date Wed, 19 Aug 2015 12:10:03 +0100) starting


Any help greatly appreciated.
Many thanks,
Chris.