Andy, Are you able to provide your client code? NativeProcessMsgReader isn't Artemis's so its not clear what else you're doing to connect, subscribe, etc.
John On Fri, Sep 2, 2016 at 12:38 PM Andy Redhead <andy.redh...@oneadvanced.com> wrote: > Hi, > > > > Adding to the information below, if I change the junit test case that > tries sending a message through artemis into “NativeProcessMsgReader” to > use AMQP (rather than the core api), I get the stack trace: > > > > Exception in thread "Thread-1" *java.lang.IndexOutOfBoundsException*: > readerIndex(25) + length(276496418) exceeds writerIndex(294): > DuplicatedByteBuf(ridx: 25, widx: 294, cap: 512, unwrapped: > UnpooledHeapByteBuf(ridx: 17, widx: 294, cap: 512)) > > at io.netty.buffer.AbstractByteBuf.checkReadableBytes( > *AbstractByteBuf.java:1165*) > > at io.netty.buffer.AbstractByteBuf.readBytes( > *AbstractByteBuf.java:675*) > > at io.netty.buffer.AbstractByteBuf.readBytes( > *AbstractByteBuf.java:683*) > > at io.netty.buffer.WrappedByteBuf.readBytes( > *WrappedByteBuf.java:511*) > > at > org.apache.activemq.artemis.core.buffers.impl.ChannelBufferWrapper.readSimpleStringInternal( > *ChannelBufferWrapper.java:90*) > > at > org.apache.activemq.artemis.core.buffers.impl.ChannelBufferWrapper.readStringInternal( > *ChannelBufferWrapper.java:113*) > > at > org.apache.activemq.artemis.core.buffers.impl.ChannelBufferWrapper.readString( > *ChannelBufferWrapper.java:96*) > > at > com.advanced365.transoft.renault.poc.decforms.asyncmsg.c2java.NativeProcessMsgReader.run( > *NativeProcessMsgReader.java:132*) > > > > It is interesting to note that “NativeProcessMsgReader.java:132” links to > this line: > > > > String receivedMsg = > msgReceived.getBodyBuffer().readString(); > > > > Which is the line I thought was causing trouble when the code ran in > Tomcat… > > > > > > Next, I modified “NativeProcessMsgReader” to use Qpid AMQP client to read > messages from Artemis (with the test case still sending messages using > AMQP) – this worked perfectly. > > > > So it seems that: > > · if the producer and consumer use the same protocol, messages flow > through ok. > > · If the producer users AMQP API and the consumer uses Artemis Core > API then there is a problem > > > > For now I’ll stick with using AMQP at both ends. > > > > I’m still curious to know if it’s reasonable to expect using an AMQP > producer and an Artemis Core consumer to work? > > > > Cheers, Andy > > > > *From:* Andy Redhead [mailto:andy.redh...@oneadvanced.com] > *Sent:* 01 September 2016 23:03 > *To:* users@activemq.apache.org > *Subject:* Artemis Core consumer hangs when reading message sent by AMQP > producer > > > > Hi, > > > > I’m running Artemis 1.3.0 embedded inside a spring app running in Tomcat. > > > > I have a remote message producer (NumberGuessMain.java) that uses the > Apache Qpid Proton library to push messages onto an Artemis queue with the > URL: > > > > amqp://localhost:5672/native-2-java > > > > The messages created by the producer are JSON strings. > > > > I have a single threaded, singleton consumer that uses the native Artemis > API (NativeProcessMsgReader.java) running inside the same web app as > Artemis, reading from the queue: > > > > native-2-java > > > > While there are no messages to read, the consumer happily loops through > the while loop in the “run” method. > > > > As soon as the consumer tries to read the body of the first message, it > hangs on the line: > > > > String receivedMsg = > msgReceived.getBodyBuffer().readString(); > > > > The last lines in the log file are: > > > > 2016-09-01T22:27:26,270 15137 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - no message during last read > period > > 2016-09-01T22:27:26,270 15137 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - in while loop, waiting for > message > > 2016-09-01T22:27:26,772 15639 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - no message during last read > period > > 2016-09-01T22:27:26,772 15639 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - in while loop, waiting for > message > > 2016-09-01T22:27:26,912 15779 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - received non-null message > > 2016-09-01T22:27:26,912 15779 [Thread-6] DEBUG > c.a.t.r.p.d.a.c.NativeProcessMsgReader - run - non-null message, body > length: 307 > > > > To me this looks like the message has reached Artemis and is made > available to the consumer but something goes wrong when the consumer tries > to access the body of the message. > > > > I’m new to Artemis and AMQP so it’s quite possible I’m doing something > stupid… > > > > Is the basic assumption that it’s ok to send a message using AMQP and > receive it using Artemis core API valid? 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