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Non-deterministic inability to connect to bloop at times

See original GitHub issue

I have a Scala script that I run regularly, and at times, it fails with:

Exception in thread "main" java.io.IOException: Can't connect to 127.0.0.1:49442
        at scala.build.bloop.BloopServer$.create$1(BloopServer.scala:89)
        at scala.build.bloop.BloopServer$.connect(BloopServer.scala:97)
        at scala.build.bloop.BloopServer$.bsp(BloopServer.scala:120) 
        at scala.build.bloop.BloopServer$.buildServer(BloopServer.scala:138)
        at scala.build.bloop.BloopServer$.withBuildServer(BloopServer.scala:203)
        at scala.build.Build$.build(Build.scala:190)
        at scala.build.Build$.build(Build.scala:207)        
        at scala.cli.commands.Run$.run(Run.scala:52)                            
        at scala.cli.commands.DefaultBase.run(DefaultBase.scala:25)
        at scala.cli.commands.DefaultBase.run(DefaultBase.scala:5)
        at caseapp.core.app.CaseApp.main(CaseApp.scala:150)
        at caseapp.core.app.CommandsEntryPoint.main(CommandsEntryPoint.scala:112)
        at scala.cli.ScalaCli$.main(ScalaCli.scala:61)
        at scala.cli.ScalaCli.main(ScalaCli.scala)
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at com.oracle.svm.jni.JNIJavaCallWrappers.jniInvoke_VA_LIST:Ljava_net_ConnectException_2_0002e_0003cinit_0003e_00028Ljava_lang_String_2_00029V(JNIJavaCallWrappers.java:0)
        at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:609)
        at java.net.Socket.connect(Socket.java:558)
        at java.net.Socket.<init>(Socket.java:454)
        at java.net.Socket.<init>(Socket.java:231)
        at scala.build.blooprifle.internal.Operations$$anon$2.openSocket(Operations.scala:205)
        at scala.build.blooprifle.BloopRifle$$anon$2.openSocket(BloopRifle.scala:118)
        at scala.build.bloop.BloopServer$.create$1(BloopServer.scala:81)
        ... 13 more

I haven’t found what causes the problem, nor did I find how to fix it…

Issue Analytics

State:
Created 2 years ago
Comments:6 (6 by maintainers)

Top GitHub Comments

1reaction

romanowskicommented, Oct 25, 2021

@anatoliykmetyuk I am closing the issue now since it was using quite an ancient version of Scala CLI. In case you see similar problems with current versions, please open another issue.

0reactions

alexarchambaultcommented, Oct 7, 2021

I’m not sure what causes the issue @anatoliykmetyuk is seeing.

But many things changed since 76d17af. We now default to domain sockets for the BSP connection in particular. And we also restart Bloop if its version is too old.