Is it possible to use apns4erl and cowboy 1 in the same release?

[elbrujohalcon]

apns4erl depends on gun (master), and gun depends on cowlib (master) and uses cowlib_http2, which is only available in cowlib 2.0.0-pre. Cowboy 1.1.2 depends on cowlib 1.0.2, which doesn't have cowlib_http2 module.

I can't include both cowlib 2.0.0-pre and cowlib 1.0.2 into the same release. It means, I can use both cowboy 1 and apns4erl in my project. Is there any workaround?

[yzh44yzh]

I see 5 options:

• switch project to cowboy 2
• fork apns4erl, gun, cowlib, rename modules in cowlib, use new names in gun
• try to use elixir lib (apns or pigeon) in erlang project
• run apns4erl in other node
• write my own apns library

[elbrujohalcon]

@yzh44yzh I see your problem, and sadly I don't have a good solution for it.
apns4erl depends heavily on cowlib_http2.
One thing we can do, although totally unrelated to your project, is to replace master in rebar.config by a git SHA.

And from your list of options, Elixir's apns is internally the same as apns4erl 1.0.6-final.

[elbrujohalcon]

Sorry for hijacking your issue, @yzh44yzh :$
It's the way aw works :/

[yzh44yzh]

Thanks for quick reply

[yzh44yzh]

Some info about elixir libs:

https://hex.pm/packages/apns uses its own implementation of http2
https://hex.pm/packages/pigeon uses kadabra http2 client (https://hex.pm/packages/kadabra)

They both don't depend on cowlib.