shahryarjb
How to download a file with Finch which is redirected
Hi, I want to download a file from GitHub, but Finch returns 302 status and can’t download.
for example:
%Finch.Response{
status: 302,
body: "",
headers: [
{"server", "GitHub.com"},
{"date", "Mon, 19 Sep 2022 11:41:40 GMT"},
{"content-type", "text/html;charset=utf-8"},
{"content-length", "0"},
{"cache-control", "public, must-revalidate, max-age=0"},
{"expires", "Mon, 19 Sep 2022 11:41:40 GMT"},
{"location",
"https://codeload.github.com/mishka-group/mishka-cms/legacy.tar.gz/refs/tags/0.0.2"},
In location section you can see the real link after redirection, if I use this it works, but I need to know how to force Finch download automatically links maybe are redirected.
Block code:
Finch.build(:get, "https://api.github.com/repos/mishka-group/mishka-cms/tarball/0.0.2")
|> Finch.request(@request_name)
Thank you in advance
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hst337
There’s no built-in feature inside Finch which follow redirects. You can write your own wrapper for this. For example
def do_get(url, name, depth \\ 123)
def do_get(:undefined, _, _), do: {:error, :bad_redirect}
def do_get(url, name, 0), do: {:error, :maximum_depth_exceeded}
def do_get(url, name, depth) do
:get
|> Finch.build(url)
|> Finch.request(name)
|> case do
{:ok, %Finch.Response{status: 302, headers: headers}} ->
"location"
|> :proplists.get_value(headers)
|> do_get(name, depth - 1)
other ->
other
end
end
dimitarvp
Apologies that I am not answering your question directly but I would strongly recommend you use Tesla with Finch below. Tesla has a number of these super useful wrappers, redirect following being one of them.
hst337
As I’ve said, there’s no such option. I’ve read the sources and it doesn’t support redirects out of the box
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