SourceAddressAdapter with certain port should be stricter with pool size and blocking?

[n1ngu]

As far as I understand, if SourceAddressAdapter is used with an (IP, PORT) tuple and the port is other than 0, there is no way this adapter can work without passing

pool_connections=1,
pool_maxsize=1,
pool_block=True,

to the underlying HTTPAdapter.

Shouldn't this either

• be forced by the implementation
• raise a warning if this exact values are not specified by the user
• write more documentation about it

?