TLSSocketWrapper::recvfrom does not output source address

[kjbracey]

Description

TLSSocketWrapper::recvfrom does not output the peer address. This is not a fundamental issue, as the underlying transport will be connected, hence all packets should be already known to come from the connected peer (via the TCP connection or filtering in UDPSocket) - TLSSocketWrapper relies on this when it just uses transport->recv.

But generic datagram application code may neverless be checking the address output from Socket::recvfrom - this caused a failure when attempting to switch some client code from using UDPSocket to DTLSSocket.

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-1304