Merge bitcoin/bitcoin#26312: Remove Sock::Get() and Sock::Sock()

7df450836969b81e98322c9a09c08b35d1095a25 test: improve sock_tests/move_assignment (Vasil Dimov)
5086a99b84367a45706af7197da1016dd966e6d9 net: remove Sock default constructor, it's not necessary (Vasil Dimov)
7829272f7826511241defd34954e6040ea963f07 net: remove now unnecessary Sock::Get() (Vasil Dimov)
944b21b70ae490a5a746bcc1810a5074d74e9d34 net: don't check if the socket is valid in ConnectSocketDirectly() (Vasil Dimov)
aeac68d036e3cff57ce155f1a904d77f98b357d4 net: don't check if the socket is valid in GetBindAddress() (Vasil Dimov)
5ac1a51ee5a57da59f1ff1986b7d9054484d3c80 i2p: avoid using Sock::Get() for checking for a valid socket (Vasil Dimov)

Pull request description:

  _This is a piece of #21878, chopped off to ease review._

  Peeking at the underlying socket file descriptor of `Sock` and checkig if it is `INVALID_SOCKET` is bad encapsulation and stands in the way of testing/mocking/fuzzing.

  Instead use an empty `unique_ptr` to denote that there is no valid socket where appropriate or outright remove such checks where they are not necessary.

  The default constructor `Sock::Sock()` is unnecessary now after recent changes, thus remove it.

ACKs for top commit:
  ajtowns:
    ACK 7df450836969b81e98322c9a09c08b35d1095a25
  jonatack:
    ACK 7df450836969b81e98322c9a09c08b35d1095a25

Tree-SHA512: 9742aeeeabe8690530bf74caa6ba296787028c52f4a3342afd193b05dbbb1f6645935c33ba0a5230199a09af01c666bd3c7fb16b48692a0d185356ea59a8ddbf

0 files changed, 0 insertions, 0 deletions