Phantom crash

[ArnisL]

There's a peculiar phantom crash happening in react_on_rails tutorial app test suite

Crash occurs at spec/features/shared/contexts.rb:51

When test execution briefly stopped with byebug before line:51 - test passes

Strace (got full 30k+ lines log too)

What seems to be telling:

open("/home/lapsa/.rvm/gems/ruby-2.3.1/gems/websocket-driver-0.6.4/lib/websocket/driver/hybi.rb", O_RDONLY|O_NONBLOCK|O_CLOEXEC) = 16
(..)
read(16, "module WebSocket\n  class Driver\n"..., 8192) = 8192
read(16, "ror, \"Unrecognized frame opcode:"..., 8192) = 3890

Found on stackoverflow something seemingly related about frame opcodes and web sockets

My uneducated guess is that either:

• something (what?) is using outdated WebSocket protocol
• or there is some kind of race condition problem in Capybara::Poltergeist::WebSocketServer

Any ideas what's going on?

[twalpole]

The most likely cause of this is PhantomJS which we have no control over. What version are you using? Could you try running it with the PhantomJS 2.5 beta - https://groups.google.com/forum/#!topic/phantomjs/AefOuwkgBh0 -, and master branch of Poltergeist?

[ArnisL]

Used PhantomJS 2.1.1

Having some troubles testing beta version at the moment. Unsure how to get that up and running on Arch Linux.

[twalpole]

Any update on this? Were you able to try PhantomJS 2.5 ?

[ArnisL]

Sorry... Real life happened and completely forgot about this.

Will give it another shot this weekend.