Change Details

``` This PR factors out transport packaging logic from CConnman::PushMessage(). It's similar to #16202 (where we refactor deserialization). This allows implementing a new message transport protocol like BIP324. ``` Backport of core PR16562.

``` This PR factors out transport packaging logic from CConnman::PushMessage(). It's similar to #16202 (where we refactor deserialization). This allows implementing a new message transport protocol like BIP324. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/16562 | PR16562]].

``` This PR factors out transport packaging logic from CConnman::PushMessage(). It's similar to #16202 (where we refactor deserialization). This allows implementing a new message transport protocol like BIP324. ``` Backport of core [[https://github.com/bitcoin/bitcoin/pull/16562 | PR16562]].