Use http_headers() type in cowboy_http_req:headers/1.
Use http_headers() type in cowboy_http_req:headers/1.

CrankWheel/cowboy,K2InformaticsGmbH/cowboy,piboye/cowboy,chef/cowboy,essen/cowboy,pap/cowboy,binarin/cowboy,sile/cowboy,heroku/cowboy,imdeps/cowboy,callsign-core/cowboy_hybi00,heroku/cowboy,rabbitmq/cowboy,bsmr-erlang/cowboy,LineMetrics/cowboy,essen/cowboy,grahamrhay/cowboy,unisontech/cowboy,dangjun625/cowboy,276361270/cowboy,LineMetrics/cowboy,nviennot/cowboy,kivra/cowboy,MSch/cowboy,LineMetrics/cowboy,noname007/cowboy,piboye/cowboy,odo/cowboy,layerhq/cowboy,lpgauth/cowboy,lpgauth/cowboy,callsign-core/cowboy_hybi00,cad627/cowboy,yangchengjian/cowboy,linearregression/cowboyku,Reimerei/cowboy,heroku/cowboyku,rbalint/pkg-erlang-cowboy,acrispin/cowboy,paulperegud/cowboy,binarin/cowboy,manastech/cowboy,ferd/cowboyku,unisontech/cowboy,cad627/cowboy,venkateshreddy/cowboy,omusico/cowboy,manastech/cowboy,bobos/ecweb,hairyhum/cowboy,ninenines/cowboy,yangchengjian/cowboy,layerhq/cowboy,turtleDeng/cowboy