Make it easier to test API clients and mock specific methods.
Also add comments on exported methods.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Allow to reuse underlying connection for requests
with different key. If no key is specified the one
provided on client creation is used.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
There is a need to set dial timeout in SDK client that is used in case of
internal connection opening. Add DialTimeout option constructor to support
this feature.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
