Inappropriate key in call to `context.WithValue`

[r0xDB]

handler_go17_test.go

should not use built-in type string as key for value; define your own type to avoid collisions

Description

To prevent clashes across packages using context, the provided key must be similar and should not be of type string or any other built-in type. Users of WithValue must provide their key types.

To avoid allocating when assigning to an interface{}, context keys often have concrete type struct{}. Alternatively, exported context key variables’ static type should be a pointer or interface.