Packard_Goose
I’m trying to create a secure connection to an MQTT broker using Tortoise however I receive an error {:error, {:options, {:cert, '/Users/packardgoose/Desktop/host.cert'}}} I’m not sure what I’m doing wrong, should the certificate be a .pem file? I should be able to use a directory for this argument according to some documentation I read.
Here’s the code
@cert '/Users/packardgoose/Desktop/host.cert'
@key '/Users/packardgoose/Desktop/host.key'
{:ok, _pid} = Tortoise.Supervisor.start_child(
client_id: "my_id",
handler: {Tortoise.Handler.Logger, []},
server:
{Tortoise.Transport.SSL,
[host: 'getahos.io',
port: 8885,
cacertfile: :certifi.cacertfile(),
key: @key,
cert: @cert
]},
keep_alive: 300000,
user_name: Keyword.fetch!(state_tokens, :mqtt_token),
password: Keyword.fetch!(state_tokens, :mqtt_token_pass))
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voltone
You can either pass in paths to PEM files using the
certfileandkeyfileoptions, or DER encoded binary values using thecertandkeyoptions.Packard_Goose
Thanks, can’t believe I missed that. Also I had to add the
verify: :verify_noneoption for the connection to work. Although my client is working now any idea as to why it won’t work with the default verify value? Would it be an issue on my end or the server end?voltone
I’d have to have a look at the error message you’re getting. But if I had to venture a guess, the server might have a wildcard certificate, which is unfortunately not handled very well by Erlang/OTP.
If that is indeed the case, then you have two options:
If you’re on OTP 21, add
customize_hostname_check: [match_fun: :public_key.pkix_verify_hostname_match_fun(:https)]to the SSL optionsIf you’re on an older version, you could use the
ssl_verify_funpackage to handle the hostname verification