Description
Opening a separate issue for System.Net.NameResolution/Security/Socket specific parts of #79371. We should implement the Metrics counterpart of the events listed below.
I wasn't able to find any OTel specifications for this area, which would require us to change the semantics, so my assumption is that this should be fairly trivial work.
It might complicate things if we want to enable passing an IMeterFactory to Dns or Socket similarly to #86961, but that work can be done incrementally.
System.Net.NameResolution
All counters listed in https://learn.microsoft.com/en-us/dotnet/core/diagnostics/available-counters#systemnetnameresolution-counters
dns-lookups-requesteddns-lookups-durationcurrent-dns-lookups
Also tracked in #48885.
System.Net.Security
All counters listed in https://learn.microsoft.com/en-us/dotnet/core/diagnostics/available-counters#systemnetsecurity-counters:
tls-handshake-ratetotal-tls-handshakescurrent-tls-handshakesfailed-tls-handshakesall-tls-sessions-opentls10-sessions-opentls11-sessions-opentls12-sessions-opentls13-sessions-openall-tls-handshake-durationtls10-handshake-durationtls11-handshake-durationtls12-handshake-durationtls13-handshake-duration
System.Net.Sockets
All counters listed in https://learn.microsoft.com/en-us/dotnet/core/diagnostics/available-counters#systemnetsockets-counters
outgoing-connections-establishedincoming-connections-establishedcurrent-outgoing-connect-attemptsbytes-receivedbytes-sentdatagrams-receiveddatagrams-sent