<commit_before>package connpool

import (
	"net"
	"sync"
	"time"

	"github.com/getlantern/golog"
)

const (
	DefaultClaimTimeout = 10 * time.Minute
)

var (
	log = golog.LoggerFor("connpool")
)

type DialFunc func() (net.Conn, error)

// Pool is a pool of connections, built from a Config using the New method.
// Connections are pooled lazily up to Size and expire after ClaimTimeout.
// Lazily here means that the Pool won't start to fill until the first request
// for a connection. As long as the Pool is actively being used, it will attempt
// to always have Size number of connections ready to use.
type Pool interface {
	// Get gets a connection from the pool, or dials a new one if none are
	// available.
	Get() (net.Conn, error)

	// Close stops the goroutines that are filling the pool, blocking until
	// they've all terminated.<commit_msg>Updated comment for Pool<commit_after>package connpool

import (
	"net"
	"sync"
	"time"

	"github.com/getlantern/golog"
)

const (
	DefaultClaimTimeout = 10 * time.Minute
)

var (
	log = golog.LoggerFor("connpool")
)

type DialFunc func() (net.Conn, error)

// Pool is a pool of connections, built from a Config using the New method. The
// purpose of connpool is to accelerate bursty clients, that is to say clients
// that tend to do a lot of dialing in rapid succeession. At steady state, the
// pool is usually empty, but once activity is detected it starts to fill itself
// up and keeps itself filled as long as activity continues.
//
// Connections are pooled lazily up to Size and expire after ClaimTimeout.
// Lazily here means that the Pool won't start to fill until the first request
// for a connection. As long as the Pool is actively being used, it will attempt
// to always have Size number of connections ready to use.
type Pool interface {
	// Get gets a connection from the pool, or dials a new one if none are
	// available.
	Get() (net.Conn, error)

	// Close stops the goroutines that are filling the pool, blocking until
	// they've all terminated.
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