From 4761139fbc9b1e31c16818d90447a4a1d38c7f48 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Mon, 6 Nov 2017 22:42:16 +0100
Subject: [PATCH] comments

---
 common/net/destination.go | 3 +++
 common/net/net.go         | 2 +-
 common/net/system.go      | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/common/net/destination.go b/common/net/destination.go
index 7709b5c95..f7f5b720b 100644
--- a/common/net/destination.go
+++ b/common/net/destination.go
@@ -41,14 +41,17 @@ func UDPDestination(address Address, port Port) Destination {
 	}
 }
 
+// NetAddr returns the network address in this Destination in string form.
 func (d Destination) NetAddr() string {
 	return d.Address.String() + ":" + d.Port.String()
 }
 
+// String returns the strings form of this Destination.
 func (d Destination) String() string {
 	return d.Network.URLPrefix() + ":" + d.NetAddr()
 }
 
+// IsValid returns true if this Destination is valid.
 func (d Destination) IsValid() bool {
 	return d.Network != Network_Unknown
 }
diff --git a/common/net/net.go b/common/net/net.go
index bd0188c26..4d41e90af 100644
--- a/common/net/net.go
+++ b/common/net/net.go
@@ -1,4 +1,4 @@
-// Package net contains common network utilities.
+// Package net is a drop-in replacement to Golang's net package, with some more functionalities.
 package net
 
 //go:generate go run $GOPATH/src/v2ray.com/core/tools/generrorgen/main.go -pkg net -path Net
diff --git a/common/net/system.go b/common/net/system.go
index 6edc4ca4a..65d7b8bb0 100644
--- a/common/net/system.go
+++ b/common/net/system.go
@@ -2,6 +2,7 @@ package net
 
 import "net"
 
+// DialTCP is an injectable function. Default to net.DialTCP
 var DialTCP = net.DialTCP
 var DialUDP = net.DialUDP
 var DialUnix = net.DialUnix