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New Relic's Open-Source Elixir Agent
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lib/new_relic/util/http.ex
defmodule NewRelic.Util.HTTP do
@moduledoc false
@gzip {'content-encoding', 'gzip'}
def post(url, body, headers) when is_binary(body) do
headers = [@gzip | Enum.map(headers, fn {k, v} -> {'#{k}', '#{v}'} end)]
request = {'#{url}', headers, 'application/json', :zlib.gzip(body)}
with {:ok, {{_, status_code, _}, _headers, body}} <-
:httpc.request(:post, request, http_options(), []) do
{:ok, %{status_code: status_code, body: to_string(body)}}
end
end
def post(url, body, headers),
do: post(url, Jason.encode!(body), headers)
def get(url, headers, opts \\ []) do
headers = Enum.map(headers, fn {k, v} -> {'#{k}', '#{v}'} end)
request = {'#{url}', headers}
with {:ok, {{_, status_code, _}, _, body}} <-
:httpc.request(:get, request, http_options(opts), []) do
{:ok, %{status_code: status_code, body: to_string(body)}}
end
end
@doc """
Certs are pulled from Mozilla exactly as Hex does:
https://github.com/hexpm/hex/blob/master/README.md#bundled-ca-certs
SSL configured according to EEF Security guide:
https://erlef.github.io/security-wg/secure_coding_and_deployment_hardening/ssl
"""
def http_options(opts \\ []) do
[
connect_timeout: 1000,
ssl: [
verify: :verify_peer,
cacertfile: Application.app_dir(:new_relic_agent, "priv/cacert.pem"),
customize_hostname_check: [
match_fun: :public_key.pkix_verify_hostname_match_fun(:https)
]
]
]
|> Keyword.merge(opts)
end
end