util: don't log low-level I/O calls for HTTP peer
`hg debugwireproto` is useful for testing HTTP interactions. Possibly
more useful than `get-with-headers.py`. But one thing that makes it
annoying for mid-level tests is that it logs all API calls, such
as readline(). This makes output - especially headers - overly
verbose.
This commit teaches our file and socket observers to not log API
calls on functions dealing with data.
We change the behavior of `hg debugwireproto` to enable this mode
by default. --debug can be added to restore the previous behavior.
As the test changes demonstrate, this makes tests much easier to
read. As a bonus, it also removes some required (glob) over lengths
in system call results.
One thing that's lacking is knowing which side sent data. But we can
fix this in a follow-up once it becomes a problem.
Differential Revision: https://phab.mercurial-scm.org/D2842
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}