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diff --git a/lib/tesla/adapter/mint.ex b/lib/tesla/adapter/mint.ex
index 34ed8dc..962ae50 100644
--- a/lib/tesla/adapter/mint.ex
+++ b/lib/tesla/adapter/mint.ex
@@ -1,179 +1,184 @@
if Version.compare(System.version(), "1.5.0") != :lt do
defmodule Tesla.Adapter.Mint do
@moduledoc """
Adapter for [mint](https://github.com/ericmj/mint)
+ Caution: The minimum supported Elixir version for mint is 1.5.0
+
Remember to add `{:mint, "~> 0.2.0"}` and `{:castore, "~> 0.1.0"}` to dependencies
Also, you need to recompile tesla after adding `:mint` dependency:
```
mix deps.clean tesla
mix deps.compile tesla
```
### Example usage
```
# set globally in config/config.exs
config :tesla, :adapter, Tesla.Adapter.Mint
# set per module
defmodule MyClient do
use Tesla
adapter Tesla.Adapter.Mint
end
+
+ # set custom cacert
+ config :tesla, :cacert, ["path_to_cacert"]
"""
@behaviour Tesla.Adapter
import Tesla.Adapter.Shared, only: [stream_to_fun: 1, next_chunk: 1]
alias Tesla.Multipart
alias Mint.HTTP
@doc false
def call(env, opts) do
with {:ok, status, headers, body} <- request(env, opts) do
{:ok, %{env | status: status, headers: format_headers(headers), body: body}}
end
end
defp format_headers(headers) do
for {key, value} <- headers do
{String.downcase(to_string(key)), to_string(value)}
end
end
defp request(env, opts) do
# Break the URI
%URI{host: host, scheme: scheme, port: port, path: path, query: query} = URI.parse(env.url)
query = (query || "") |> URI.decode_query() |> Map.to_list()
path = Tesla.build_url(path, env.query ++ query)
method =
case env.method do
:head -> "GET"
m -> m |> Atom.to_string() |> String.upcase()
end
opts =
if opts |> get_in([:transport_opts, :cacertfile]) |> is_nil() && scheme == "https" &&
!is_nil(get_default_ca()) do
transport =
opts
|> Access.get(:transport_opts, [])
|> update_in([:cacertfile], fn _ ->
get_default_ca()
end)
update_in(opts, [:transport_opts], fn _ ->
transport
end)
else
opts
end
request(
method,
scheme,
host,
port,
path,
env.headers,
env.body,
opts
)
end
defp request(method, scheme, host, port, path, headers, %Stream{} = body, opts) do
fun = stream_to_fun(body)
request(method, scheme, host, port, path, headers, fun, opts)
end
defp request(method, scheme, host, port, path, headers, %Multipart{} = body, opts) do
headers = headers ++ Multipart.headers(body)
fun = stream_to_fun(Multipart.body(body))
request(method, scheme, host, port, path, headers, fun, opts)
end
defp request(method, scheme, host, port, path, headers, body, opts) when is_function(body) do
with {:ok, conn} <- HTTP.connect(String.to_atom(scheme), host, port, opts),
# FIXME Stream function in Mint will not append the content length after eof
# This will trigger the failure in unit test
{:ok, body, length} <- stream_request(body),
{:ok, conn, _req_ref} <-
HTTP.request(
conn,
method,
path || "/",
headers ++ [{"content-length", "#{length}"}],
body
),
{:ok, _conn, res = %{status: status, headers: headers}} <- stream_response(conn) do
{:ok, status, headers, Map.get(res, :data)}
end
end
defp request(method, scheme, host, port, path, headers, body, opts) do
with {:ok, conn} <- HTTP.connect(String.to_atom(scheme), host, port, opts),
{:ok, conn, _req_ref} <- HTTP.request(conn, method, path || "/", headers, body || ""),
{:ok, _conn, res = %{status: status, headers: headers}} <- stream_response(conn) do
{:ok, status, headers, Map.get(res, :data)}
end
end
defp get_default_ca() do
Application.get_env(:tesla, :cacert)
end
defp stream_request(fun, body \\ "") do
case next_chunk(fun) do
{:ok, item, fun} when is_list(item) ->
stream_request(fun, body <> List.to_string(item))
{:ok, item, fun} ->
stream_request(fun, body <> item)
:eof ->
{:ok, body, byte_size(body)}
end
end
defp stream_response(conn, response \\ %{}) do
receive do
msg ->
case HTTP.stream(conn, msg) do
{:ok, conn, stream} ->
response =
Enum.reduce(stream, response, fn x, acc ->
case x do
{:status, _req_ref, code} ->
Map.put(acc, :status, code)
{:headers, _req_ref, headers} ->
Map.put(acc, :headers, headers)
{:data, _req_ref, data} ->
Map.put(acc, :data, Map.get(acc, :data, "") <> data)
{:done, _req_ref} ->
Map.put(acc, :done, true)
_ ->
acc
end
end)
if Map.get(response, :done) do
{:ok, conn, Map.drop(response, [:done])}
else
stream_response(conn, response)
end
{:error, _conn, error, _res} ->
{:error, "Encounter Mint error #{inspect(error)}"}
:unknown ->
{:error, "Encounter unknown error"}
end
end
end
end
end

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