Always call Socket#setTimeout in HTTP ClientRequest#setTimeout

[mooyoul]

Is your feature request related to a problem? Please describe.
Hello there.
Currently, ClientRequest#setTimeout and Socket#setTimeout has different behavior.
ClientRequest#setTimeout calls Socket#setTimeout right after connection has established.
I am not sure it is intended or not, but it's impossible to detect socket inactivity before connection establishment when using ClientRequest#setTimeout. It makes users harder to handle connect timeout.

Describe the solution you'd like
Always call Socket#setTimeout regardless of connection establishment.

Describe alternatives you've considered
None.