> Also, have you confirmed that Artemis is actually listening on the port
you're trying to use?

The log he pasted indicates that the broker is indeed listening on 61616:

  INFO  [org.apache.activemq.artemis.core.server] AMQ221020: Started EPOLL
Acceptor at 0.0.0.0:61616 for protocols
[CORE,MQTT,AMQP,STOMP,HORNETQ,OPENWIRE]

Using netstat may be helpful to confirm beyond all doubt, though.


Justin

On Fri, Aug 7, 2020 at 8:51 PM Tim Bain <[email protected]> wrote:

> One way to test if it's a firewall issue is to try to open a raw TCP socket
> to the port and see if you can establish a TCP connection and pass data. It
> doesn't need to be compliant with the higher-level protocols (HTTP, STOMP),
> it just needs to confirm that bytes are successfully passed. If bytes pass,
> it's likely not a firewall/network issue; if nothing gets through or the
> TCP connection fails outright, then it's likely firewall or network
> routing.
>
> It's been a while since I've done this, but I think both telnet and netcat
> (nc) will let you do this type of test. I'm sure there are other ways to do
> it, too.
>
> Also, have you confirmed that Artemis is actually listening on the port
> you're trying to use? You can check via sudo netstat -antp | grep LISTEN |
> grep 61616 on the machine hosting the broker.
>
> Tim
>
> On Fri, Aug 7, 2020, 4:39 PM Justin Bertram <[email protected]> wrote:
>
> > Given that the broker is up and running fine on the remote machine I
> would
> > say there's some kind of environmental or network issue preventing
> > communication from your local machine and the remote machine on port
> 61616.
> > Perhaps a firewall is blocking that port.
> >
> >
> > Justin
> >
> > On Fri, Aug 7, 2020 at 4:18 PM Christopher Pisz <
> [email protected]
> > >
> > wrote:
> >
> > > Log looks good to me:
> > >
> > > 2020-08-07 15:22:40,666 INFO
> > >  [org.apache.activemq.artemis.integration.bootstrap] AMQ101000:
> Starting
> > > ActiveMQ Artemis Server
> > > 2020-08-07 15:22:40,713 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221000: live Message Broker is starting with configuration Broker
> > > Configuration
> > >
> > >
> >
> (clustered=false,journalDirectory=data/journal,bindingsDirectory=data/bindings,largeMessagesDirectory=data/large-messages,pagingDirectory=data/paging)
> > > 2020-08-07 15:22:40,759 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221012: Using AIO Journal
> > > 2020-08-07 15:22:40,798 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221057: Global Max Size is being adjusted to 1/2 of the JVM max size
> > > (-Xmx). being defined as 1,073,741,824
> > > 2020-08-07 15:22:40,822 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-server]. Adding protocol
> > support
> > > for: CORE
> > > 2020-08-07 15:22:40,823 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-amqp-protocol]. Adding
> > protocol
> > > support for: AMQP
> > > 2020-08-07 15:22:40,823 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-hornetq-protocol]. Adding
> > > protocol support for: HORNETQ
> > > 2020-08-07 15:22:40,824 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-mqtt-protocol]. Adding
> > protocol
> > > support for: MQTT
> > > 2020-08-07 15:22:40,824 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-openwire-protocol]. Adding
> > > protocol support for: OPENWIRE
> > > 2020-08-07 15:22:40,825 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221043: Protocol module found: [artemis-stomp-protocol]. Adding
> > protocol
> > > support for: STOMP
> > > 2020-08-07 15:22:40,890 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221034: Waiting indefinitely to obtain live lock
> > > 2020-08-07 15:22:40,890 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221035: Live Server Obtained live lock
> > > 2020-08-07 15:22:40,979 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221080: Deploying address DLQ supporting [ANYCAST]
> > > 2020-08-07 15:22:40,993 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221003: Deploying ANYCAST queue DLQ on address DLQ
> > > 2020-08-07 15:22:41,048 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221080: Deploying address ExpiryQueue supporting [ANYCAST]
> > > 2020-08-07 15:22:41,050 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221003: Deploying ANYCAST queue ExpiryQueue on address ExpiryQueue
> > > 2020-08-07 15:22:41,461 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221020: Started EPOLL Acceptor at 0.0.0.0:61616 for protocols
> > > [CORE,MQTT,AMQP,STOMP,HORNETQ,OPENWIRE]
> > > 2020-08-07 15:22:41,464 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221020: Started EPOLL Acceptor at 0.0.0.0:5445 for protocols
> > > [HORNETQ,STOMP]
> > > 2020-08-07 15:22:41,467 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221020: Started EPOLL Acceptor at 0.0.0.0:5672 for protocols [AMQP]
> > > 2020-08-07 15:22:41,469 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221020: Started EPOLL Acceptor at 0.0.0.0:1883 for protocols [MQTT]
> > > 2020-08-07 15:22:41,479 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221020: Started EPOLL Acceptor at 0.0.0.0:61613 for protocols
> [STOMP]
> > > 2020-08-07 15:22:41,481 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221007: Server is now live
> > > 2020-08-07 15:22:41,482 INFO  [org.apache.activemq.artemis.core.server]
> > > AMQ221001: Apache ActiveMQ Artemis Message Broker version 2.14.0
> > [0.0.0.0,
> > > nodeID=5c5d5e87-d8e3-11ea-8b59-b42e99360c2c]
> > > 2020-08-07 15:22:41,827 INFO
> > >  [org.apache.activemq.hawtio.branding.PluginContextListener]
> Initialized
> > > activemq-branding plugin
> > > 2020-08-07 15:22:41,879 INFO
> > >  [org.apache.activemq.hawtio.plugin.PluginContextListener] Initialized
> > > artemis-plugin plugin
> > > 2020-08-07 15:22:42,326 INFO  [io.hawt.HawtioContextListener]
> > Initialising
> > > hawtio services
> > > 2020-08-07 15:22:42,348 INFO  [io.hawt.system.ConfigManager]
> > Configuration
> > > will be discovered via system properties
> > > 2020-08-07 15:22:42,352 INFO  [io.hawt.jmx.JmxTreeWatcher] Welcome to
> > > hawtio 1.5.12 : http://hawt.io/ : Don't cha wish your console was hawt
> > > like
> > > me? ;-)
> > > 2020-08-07 15:22:42,361 INFO  [io.hawt.jmx.UploadManager] Using file
> > upload
> > > directory: /var/lib/testbroker/tmp/uploads
> > > 2020-08-07 15:22:42,383 INFO  [io.hawt.web.AuthenticationFilter]
> Starting
> > > hawtio authentication filter, JAAS realm: "activemq" authorized
> role(s):
> > > "amq" role principal classes:
> > > "org.apache.activemq.artemis.spi.core.security.jaas.RolePrincipal"
> > > 2020-08-07 15:22:42,406 INFO
> [io.hawt.web.JolokiaConfiguredAgentServlet]
> > > Jolokia overridden property: [key=policyLocation,
> > > value=file:/var/lib/testbroker/etc/jolokia-access.xml]
> > > 2020-08-07 15:22:42,430 INFO  [io.hawt.web.RBACMBeanInvoker] Using
> MBean
> > > [hawtio:type=security,area=jmx,rank=0,name=HawtioDummyJMXSecurity] for
> > role
> > > based access control
> > > 2020-08-07 15:22:42,544 INFO  [io.hawt.system.ProxyWhitelist] Initial
> > proxy
> > > whitelist: [localhost, 127.0.0.1, 10.105.1.162,
> > > hansel04.alertinnovation.com
> > > ]
> > > 2020-08-07 15:22:42,785 INFO  [org.apache.activemq.artemis] AMQ241001:
> > HTTP
> > > Server started at http://localhost:8161
> > > 2020-08-07 15:22:42,785 INFO  [org.apache.activemq.artemis] AMQ241002:
> > > Artemis Jolokia REST API available at
> > > http://localhost:8161/console/jolokia
> > > 2020-08-07 <http://localhost:8161/console/jolokia2020-08-07>
> > 15:22:42,786
> > > INFO  [org.apache.activemq.artemis] AMQ241004:
> > > Artemis Console available at http://localhost:8161/console
> > >
> > > Trying producer command on the remote machine itself:
> > > cd /opt/apache-artemis-2.14.0/bin/
> > > ./artemis producer --url tcp://localhost:61616 --user username
> --password
> > > password
> > > Connection brokerURL = tcp://localhost:61616
> > > Producer ActiveMQQueue[TEST], thread=0 Started to calculate elapsed
> time
> > > ...
> > >
> > > Producer ActiveMQQueue[TEST], thread=0 Produced: 1000 messages
> > > Producer ActiveMQQueue[TEST], thread=0 Elapsed time in second : 1 s
> > > Producer ActiveMQQueue[TEST], thread=0 Elapsed time in milli second :
> > 1509
> > > milli seconds
> > >
> > >
> > >
> > > On Fri, Aug 7, 2020 at 3:41 PM Justin Bertram <[email protected]>
> > wrote:
> > >
> > > > Did you check artemis.log to ensure the broker actually started up
> > > without
> > > > errors?
> > > >
> > > > Also, did you run the "artemis producer" command on the remote
> machine
> > to
> > > > make sure the broker is actually working?
> > > >
> > > >
> > > > Justin
> > > >
> > > > On Fri, Aug 7, 2020 at 2:33 PM Christopher Pisz <
> > > [email protected]
> > > > >
> > > > wrote:
> > > >
> > > > > From Remote Machine:
> > > > > cd /var/lib
> > > > > sudo su
> > > > > /opt/apache-artemis-2.14.0/bin/artemis create testbroker
> > > > > Creating ActiveMQ Artemis instance at: /var/lib/testbroker
> > > > >
> > > > > --user: is a mandatory property!
> > > > > Please provide the default username:
> > > > > user
> > > > >
> > > > > --password: is mandatory with this configuration:
> > > > > Please provide the default password:
> > > > >
> > > > >
> > > > > --allow-anonymous | --require-login: is a mandatory property!
> > > > > Allow anonymous access?, valid values are Y,N,True,False
> > > > > Y
> > > > >
> > > > > Auto tuning journal ...
> > > > > done! Your system can make 62.5 writes per millisecond, your
> > > > > journal-buffer-timeout will be 16000
> > > > >
> > > > > You can now start the broker by executing:
> > > > >
> > > > >    "/var/lib/testbroker/bin/artemis" run
> > > > >
> > > > > Or you can run the broker in the background using:
> > > > >
> > > > >    "/var/lib/testbroker/bin/artemis-service" start
> > > > >
> > > > > "/var/lib/testbroker/bin/artemis-service" start
> > > > > Starting artemis-service
> > > > > artemis-service is now running (21742)
> > > > >
> > > > > From Local Machine:
> > > > > ping topsecretmachine.com
> > > > > PING topsecretmachine.com (someip) 56(84) bytes of data.
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=1 ttl=63
> > > time=68.3
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=2 ttl=63
> > > time=65.6
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=3 ttl=63
> > > time=69.0
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=4 ttl=63
> > > time=66.4
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=5 ttl=63
> > > time=65.7
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=6 ttl=63
> > > time=71.7
> > > > > ms
> > > > > 64 bytes from topsecretmachine.com (someip): icmp_seq=7 ttl=63
> > > time=67.2
> > > > > ms
> > > > > ^C
> > > > > --- topsecretmachine.com ping statistics ---
> > > > > 7 packets transmitted, 7 received, 0% packet loss, time 6010ms
> > > > > rtt min/avg/max/mdev = 65.692/67.753/71.745/2.034 ms
> > > > > [cpisz@localhost ~]$ cd apache-artemis-2.14.0/bin/
> > > > > [cpisz@localhost bin]$ ./artemis producer --url tcp://
> > > > > topsecretmachine.com:61616 --user user --password password
> > > > > Connection brokerURL = tcp://topsecretmachine.com:61616
> > > > > Connection failed::Failed to create session factory
> > > > >
> > > > > --url: is a mandatory property!
> > > > > Type in the broker URL for a retry (e.g. tcp://localhost:61616)
> > > > > tcp://topsecretmachine.com:61616
> > > > > Exception in thread "main" javax.jms.JMSException: Failed to create
> > > > session
> > > > > factory
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory.createConnectionInternal(ActiveMQConnectionFactory.java:886)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory.createConnection(ActiveMQConnectionFactory.java:299)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory.createConnection(ActiveMQConnectionFactory.java:294)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.cli.commands.messages.Producer.execute(Producer.java:142)
> > > > > at
> > > > >
> > >
> org.apache.activemq.artemis.cli.Artemis.internalExecute(Artemis.java:153)
> > > > > at
> org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:101)
> > > > > at
> org.apache.activemq.artemis.cli.Artemis.execute(Artemis.java:128)
> > > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> > > > > at java.lang.reflect.Method.invoke(Method.java:498)
> > > > > at
> org.apache.activemq.artemis.boot.Artemis.execute(Artemis.java:134)
> > > > > at org.apache.activemq.artemis.boot.Artemis.main(Artemis.java:50)
> > > > > Caused by: ActiveMQNotConnectedException[errorType=NOT_CONNECTED
> > > > > message=AMQ219007: Cannot connect to server(s). Tried with all
> > > available
> > > > > servers.]
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.core.client.impl.ServerLocatorImpl.createSessionFactory(ServerLocatorImpl.java:699)
> > > > > at
> > > > >
> > > > >
> > > >
> > >
> >
> org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory.createConnectionInternal(ActiveMQConnectionFactory.java:884)
> > > > > ... 12 more
> > > > >
> > > > > On Fri, Aug 7, 2020 at 3:10 PM Justin Bertram <[email protected]
> >
> > > > wrote:
> > > > >
> > > > > > Given that you have an instance of ActiveMQ Artemis on the same
> > > machine
> > > > > as
> > > > > > the STOMP client I recommend you do something like this:
> > > > > >
> > > > > >   > cd <ARTEMIS_INSTANCE_HOME>/bin
> > > > > >   > ./artemis producer --url tcp://remote-machine:61616 --user
> > > yourUser
> > > > > > --password yourPassword
> > > > > >
> > > > > > Let me know if that works.
> > > > > >
> > > > > >
> > > > > > Justin
> > > > > >
> > > > > > On Fri, Aug 7, 2020 at 1:49 PM Christopher Pisz <
> > > > > [email protected]
> > > > > > >
> > > > > > wrote:
> > > > > >
> > > > > > > I just followed the instructions on
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> https://activemq.apache.org/components/artemis/documentation/2.0.0/using-server.html
> > > > > > > The broker is the default. Nothing is edited.
> > > > > > >
> > > > > > > "
> > > > > > >
> > > > > > > cd /var/lib
> > > > > > > ${ARTEMIS_HOME}/bin/artemis create mybroker
> > > > > > > /var/lib/mybroker/bin/artemis run
> > > > > > >
> > > > > > >
> > > > > > > On Fri, Aug 7, 2020 at 2:45 PM Timothy Bish <
> [email protected]
> > >
> > > > > wrote:
> > > > > > >
> > > > > > > > On 8/7/20 2:40 PM, Christopher Pisz wrote:
> > > > > > > > > What I need:
> > > > > > > > > To determine if I can connect to activemq using stomp over
> > > > > websockets
> > > > > > > > from
> > > > > > > > > a remote machine, with a client I wrote.
> > > > > > > > >
> > > > > > > > > What I did:
> > > > > > > > > I wrote my own stomp over websockets client in C++ and
> built
> > it
> > > > for
> > > > > > > > > CentOS7, on my home computer.
> > > > > > > > > I installed an ActiveMQ on a remote machine through ssh.
> > > > > > > > > I created the ActiveMQ default broker according to the docs
> > > > > > > > > I attempted to connect with my client
> > > > > > > >
> > > > > > > > Providing the broker configuration you used will help folks
> > > answer
> > > > > with
> > > > > > > > insights into what might be wrong there.
> > > > > > > >
> > > > > > > >
> > > > > > > > > What happened:
> > > > > > > > > Connection refused
> > > > > > > > >
> > > > > > > > > What I need:
> > > > > > > > > To figure out why connection is refused
> > > > > > > > >
> > > > > > > > > Ideas of my own:
> > > > > > > > > Does the client work on the local machine with the same
> > version
> > > > and
> > > > > > > > > configuration of ActiveMQ? Yes
> > > > > > > > > Does someone else's client connect to the remote machine? I
> > > > dunno,
> > > > > I
> > > > > > > need
> > > > > > > > > someone else's client
> > > > > > > > > Maybe a client that uses something other than websockets
> will
> > > > prove
> > > > > > > that
> > > > > > > > > the "same origin policy" in the beginning of the email, is
> > > indeed
> > > > > the
> > > > > > > > > problem? I dunno. I need a client that uses another
> protocol.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > On Fri, Aug 7, 2020 at 2:33 PM Justin Bertram <
> > > > [email protected]
> > > > > >
> > > > > > > > wrote:
> > > > > > > > >
> > > > > > > > >> You're not really explaining what you need.
> > > > > > > > >>
> > > > > > > > >> You say you need "a built client that connects with a
> > > different
> > > > > > > > protocol."
> > > > > > > > >> What exactly do you mean by "built"? Does it have to be a
> > > > binary?
> > > > > If
> > > > > > > so,
> > > > > > > > >> what platform does the binary need to be built for? If it
> > > > doesn't
> > > > > > have
> > > > > > > > to
> > > > > > > > >> be a binary would a python or perl script work? Also, what
> > > > exactly
> > > > > > do
> > > > > > > > you
> > > > > > > > >> mean by "different protocol"? Do you mean a different
> > protocol
> > > > > from
> > > > > > > > STOMP?
> > > > > > > > >> If so, I thought you were specifically trying to test
> STOMP
> > > > > > > connections.
> > > > > > > > >> How would testing another protocol tell you if STOMP
> > > connections
> > > > > are
> > > > > > > > >> working?
> > > > > > > > >>
> > > > > > > > >> It's hard (if not impossible) to provide clear guidance to
> > > vague
> > > > > > > > questions.
> > > > > > > > >>
> > > > > > > > >> If it helps, ActiveMQ Artemis ships with command-line
> > clients
> > > > you
> > > > > > can
> > > > > > > > use
> > > > > > > > >> to quickly test a broker. Just type "./artemis help" from
> > the
> > > > > broker
> > > > > > > > >> instance's "bin" directory and look for details about the
> > > > > "producer"
> > > > > > > and
> > > > > > > > >> "consumer" commands.
> > > > > > > > >>
> > > > > > > > >>
> > > > > > > > >> Justin
> > > > > > > > >>
> > > > > > > > >> On Fri, Aug 7, 2020 at 1:08 PM Christopher Pisz <
> > > > > > > > [email protected]
> > > > > > > > >> wrote:
> > > > > > > > >>
> > > > > > > > >>> Yes, I did a Google search.
> > > > > > > > >>> It yields code examples or javascript libs. I need a
> built
> > > > client
> > > > > > > that
> > > > > > > > >>> connects with a different protocol, so I can quickly test
> > > that
> > > > > the
> > > > > > > > server
> > > > > > > > >>> will allow clients to connect at all.
> > > > > > > > >>>
> > > > > > > > >>>
> > > > > > > > >>>
> > > > > > > > >>> On Fri, Aug 7, 2020 at 2:05 PM Justin Bertram <
> > > > > [email protected]
> > > > > > >
> > > > > > > > >> wrote:
> > > > > > > > >>>> There are lots of STOMP clients for various platforms
> > > written
> > > > in
> > > > > > > > >> various
> > > > > > > > >>>> programming languages many of which do not use
> websockets.
> > > > What
> > > > > > > > exactly
> > > > > > > > >>> do
> > > > > > > > >>>> you need? Did you try doing an Internet search?
> > > > > > > > >>>>
> > > > > > > > >>>>
> > > > > > > > >>>> Justin
> > > > > > > > >>>>
> > > > > > > > >>>> On Fri, Aug 7, 2020 at 1:00 PM Christopher Pisz <
> > > > > > > > >>> [email protected]
> > > > > > > > >>>> wrote:
> > > > > > > > >>>>
> > > > > > > > >>>>> So I installed ActiveMQ on a remote machine this
> morning.
> > > > > > > > >>>>> Created the default broker.
> > > > > > > > >>>>> Attempted to connect with the client I wrote using
> > > > websockets.
> > > > > > > > >>>>> Connection is refused.
> > > > > > > > >>>>>
> > > > > > > > >>>>> I then tried running the
> > > > > > examples/protocols/stomp/stomp-websockets
> > > > > > > > >>>> example
> > > > > > > > >>>>> Attempted to connect with the client I write using
> > > websockets
> > > > > > > > >>>>> Connection is refused.
> > > > > > > > >>>>> Attempted to connect using the index.html from my
> machine
> > > > > rather
> > > > > > > than
> > > > > > > > >>> the
> > > > > > > > >>>>> remote(as localhost there)
> > > > > > > > >>>>> Connection refused.
> > > > > > > > >>>>>
> > > > > > > > >>>>> I don't know what to do.
> > > > > > > > >>>>> Is there another premade client I can connect with that
> > > > doesn't
> > > > > > use
> > > > > > > > >>>>> websockets, so I can at least narrow it down and see if
> > the
> > > > > > server
> > > > > > > > >>> works
> > > > > > > > >>>> at
> > > > > > > > >>>>> all?
> > > > > > > > >>>>> Any other suggestions?
> > > > > > > > >>>>>
> > > > > > > > >>>>>
> > > > > > > > >>>>>
> > > > > > > > >>>>> On Wed, Jul 29, 2020 at 5:21 PM Wayne Robinson <
> > > > > > > > >>> [email protected]
> > > > > > > > >>>>> wrote:
> > > > > > > > >>>>>
> > > > > > > > >>>>>> Websockets don’t use the same-origin policies that
> other
> > > > AJAX
> > > > > > > > >>> requests
> > > > > > > > >>>>> do.
> > > > > > > > >>>>>> You will most likely need to serve them via TLS to
> > prevent
> > > > > > browser
> > > > > > > > >>>>> errors,
> > > > > > > > >>>>>> but there’s nothing special you need to do to setup
> > CORS.
> > > > > > > > >>>>>>
> > > > > > > > >>>>>> On Thu, 30 Jul 2020 at 1:47 am, Christopher Pisz <
> > > > > > > > >>>>>> [email protected]>
> > > > > > > > >>>>>> wrote:
> > > > > > > > >>>>>>
> > > > > > > > >>>>>>> I have a process that runs in California that wants
> to
> > > talk
> > > > > to
> > > > > > a
> > > > > > > > >>>>> process
> > > > > > > > >>>>>> in
> > > > > > > > >>>>>>> New York, using Stomp over Websockets.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> Also note that my process is not a web app, but I
> > > > > implemented a
> > > > > > > > >>> stomp
> > > > > > > > >>>>>> over
> > > > > > > > >>>>>>> websocket client in C++, in order to connect things
> up
> > to
> > > > my
> > > > > > > > >>> backend.
> > > > > > > > >>>>>> Maybe
> > > > > > > > >>>>>>> this was or wasn't a good idea. So, I want my client
> to
> > > > talk
> > > > > to
> > > > > > > > >> the
> > > > > > > > >>>>>> server
> > > > > > > > >>>>>>> and subscribe, where their client pushed messages.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> I was implementing my own server when I saw that
> > ApacheMQ
> > > > > > > > >> supported
> > > > > > > > >>>>> Stomp
> > > > > > > > >>>>>>> over Websockets. So, I started reading the docs.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> It says:
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> One thing worth noting is that web sockets (just as
> > Ajax)
> > > > > > > > >>> implements
> > > > > > > > >>>> ?
> > > > > > > > >>>>>>> the same origin policy, so you can access only
> brokers
> > > > > running
> > > > > > on
> > > > > > > > >>>> the >
> > > > > > > > >>>>>>> same host as the web application running the client.
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> Is this a limitation of the server or the web client?
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> With that limitation, if I understand right, the
> server
> > > is
> > > > > not
> > > > > > > > >>> going
> > > > > > > > >>>> to
> > > > > > > > >>>>>>> accept websocket connections from a client, of any
> > kind,
> > > > that
> > > > > > is
> > > > > > > > >>> not
> > > > > > > > >>>> on
> > > > > > > > >>>>>> the
> > > > > > > > >>>>>>> same machine?
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> I am not sure I see the point of that...
> > > > > > > > >>>>>>>
> > > > > > > > >>>>>>> If that is indeed its meaning, then how do I get
> around
> > > it
> > > > in
> > > > > > > > >> order
> > > > > > > > >>>> to
> > > > > > > > >>>>>>> implement my scenario?
> > > > > > > > >>>>>>>
> > > > > > > >
> > > > > > > > --
> > > > > > > > Tim Bish
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

Reply via email to