Error running mvn package for jeromq: "Bind Cannot assign requested address: connect"

Question

I want to send and receive data from Matlab and MetaTrader 5 on Windows 10. According to this post, JeroMQ is the easiest route to go:

• I cloned the repo from https://github.com/zeromq/jeromq
• I installed maven
• Then I went into the repository root and start building it using: mvn package, which produced the following error message:

 [ERROR] Failures:
 [ERROR] TestEvents.testEventConnectRetried:85 No event was received
 [ERROR] Errors:
 [ERROR] PollTest.testPollUdp:100 » Bind Cannot assign requested address: 
 connect
 [INFO]
 [ERROR] Tests run: 588, Failures: 1, Errors: 1, Skipped: 17
 [INFO]
 [INFO] ------------------------------------------------------------------------
 [INFO] BUILD FAILURE
 [INFO] ------------------------------------------------------------------------
 [INFO] Total time: 04:48 min
 [INFO] Finished at: 2019-09-12T18:51:01+02:00
 [INFO] ------------------------------------------------------------------------
 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.1:test (default-test) on project jeromq: There are test failures.    

I tried to fix this by setting the IP configuration for the localhost to 127.0.0.1 according to these posts:

• https://help.mulesoft.com/s/article/What-does-java-net-BindException-Cannot-assign-requested-address-mean
• ZMQError: Cannot assign requested address

which did not fix the problem (same error message).

I think it is related to some IP settings, but I am new to socket communication. I have no experience in Java programming/debugging. Please help me to fix this, so the .jar file is built successfully and I can add it to my javaclasspath in Matlab.

Otherwise: Is there an (easy) alternative way to establish Matlab socket communication with other programs (e.g. via ZeroMQ)?

Answer 1

I had the same problem, to bypass the tests, you need to add some code to the pom.xml file which is at the main folder jeromq-masters.

So the part that I changed is below. You can compare with your own pom and change it according to it. Since a couple of days passed, I dont exactly remember the part that I added,but starting with "includes" must be the part that I added.

<groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.22.1</version>
    <configuration>
      <useSystemClassLoader>false</useSystemClassLoader>
      <includes>
        <include>TestFail.java</include>
      </includes>
      <testFailureIgnore>true</testFailureIgnore>
    </configuration>

Then you need to recompile it with mvn package command.

This allowed me to compile the JAR file.