link-local and global scope

[robertsdotpm]

when a socket binds to global scope and connects to a listening link local server on the same machine (on windows) it seems that the connection still succeeds but data transfer between them is impossible. This makes sense based on what link-local is but the edge-case should throw an exception. Listening on link-local to talk to link local works though.

[robertsdotpm]

other rule: bind to interface a -> connect to interface b = fail. Detect these edge cases and throw exceptions

[robertsdotpm]

• raise exception if theres no compatible address pairs between two hosts