Ya I also needed some time to wrap my head around async programming but OP was talking about "use[ing] the wrong sigil at the wrong place" - that's not what your stumbling block is here, you forgot to close the channel and you have a loop statement that by design is going to read eternally from the channel so as long as the channel is open you're going to "hang". Doesn't have anything to do with mixing up "sigils", it's just that async programming has unique challenges.