ERL-604: ssh opaque types are not used in interfaces

[OTP-Maintainer]

Original reporter: okeuday
Affected version: OTP-21.0
Fixed in version: OTP-21.0
Component: ssh
Migrated from: https://bugs.erlang.org/browse/ERL-604

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The types available for external use are exported from the {{ssh}} module, like {{ssh:ssh_connection_ref()}} and {{ssh:ssh_channel_id()}}.  However, these types are of limited use due to the internal header file {{ssh_connect.hrl}} containing separate types for {{channel_id()}} and {{connection_ref()}} that are used in external interfaces (e.g., {{ssh_connection:close}}, {{ssh_connection:send}} and {{ssh_connection:send_eof}}).

The types are shown at [ssh_connect.hrl|https://github.com/erlang/otp/blob/master/lib/ssh/src/ssh_connect.hrl#L25-L26] and [ssh.erl|https://github.com/erlang/otp/blob/master/lib/ssh/src/ssh.erl#L60-L61] .  This problem prevents dialyzer checking of source code using the {{ssh_connection}} functions.

[OTP-Maintainer]

hans said:

Your are right.

However, I'm reworking the types and specs in ssh and have fixed this.  It may (but no promise!) be released in OTP-21.0