Issue with hackney 1.6.6

[raymondboswel]

I noticed that my external calls on our development server started failing. After some head scratching and posting to requestb.in I noticed that the content-type header is duplicated as follows:

Content-Type: application/json, application/json

When I updated my local hackney to 1.6.6 I found the same behaviour. I'm not sure if this is a bug with HTTPoison or hackney, so posting here first.

My project uses Elixir 1.4.2 and HTTPoison 0.9.2.

[nlap]

Looks like a fix is coming at benoitc/hackney#388

To get up an running in the meantime I set {:hackney, "1.6.5", override: true}

[xinz]

@nlap, thanks for your rollback suggestion before fix in the hackney 1.6.6

[raymondboswel]

That's what I also ended up doing. Thanks!

[fpalluel]

Whoah, this one made me sweat a lot !!! A project suddenly stopped sending mail through Bamboo, had to debug it down to hackney...
Thanks @nlap !

[xinz]

This issue has been fixed by hackney benoitc/hackney#388 , please upgrade to hackney 1.7.0 to verify your case.

[xinz]

Before the PR #228 is accepted, if we want to choose the upgrade solution to fix this issue, we can manually upgrade with the hackney fixing in the mix projectmix.exs as:

 {:hackney, "~> 1.7.0", override: true},

[edgurgel]

https://github.com/edgurgel/httpoison/releases/tag/v0.11.1 0.11.1 has this fix! Thanks!