func newNAT(realNAT nat.NAT) *NAT {
return &NAT{
nat: realNAT,
proc: goprocess.WithParent(goprocess.Background()),
mappings: make(map[*mapping]struct{}),
}
}
func NewWorker(e exchange.Interface, c Config) *Worker {
if c.NumWorkers < 1 {
c.NumWorkers = 1 // provide a sane default
}
w := &Worker{
exchange: e,
added: make(chan *blocks.Block, c.ClientBufferSize),
process: process.WithParent(process.Background()), // internal management
}
w.start(c)
return w
}
func newNatManager(host *BasicHost) *natManager {
nmgr := &natManager{
host: host,
ready: make(chan struct{}),
proc: goprocess.WithParent(host.proc),
}
// teardown
nmgr.proc = goprocess.WithTeardown(func() error {
// on closing, unregister from network notifications.
host.Network().StopNotify((*nmgrNetNotifiee)(nmgr))
return nil
})
// host is our parent. close when host closes.
host.proc.AddChild(nmgr.proc)
// discover the nat.
nmgr.discoverNAT()
return nmgr
}
func NewRateLimiter(parent process.Process, limit int) *RateLimiter {
proc := process.WithParent(parent)
return &RateLimiter{Process: proc, limiter: LimitChan(limit)}
}
// WithContext constructs and returns a Process that respects
// given context. It is the equivalent of:
//
// func ProcessWithContext(ctx context.Context) goprocess.Process {
// p := goprocess.WithParent(goprocess.Background())
// CloseAfterContext(p, ctx)
// return p
// }
//
func WithContext(ctx context.Context) goprocess.Process {
p := goprocess.WithParent(goprocess.Background())
CloseAfterContext(p, ctx)
return p
}