Documentation
¶
Overview ¶
Package netutil provides net-related utility functions/types.
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func MustParseCIDR ¶
Types ¶
type ErrBlocked ¶
type ErrBlocked struct {
Host string
Network NamedNetwork
}
ErrBlocked is an error returned by NetworkBlocklist.Control (thus net.Dialer.DialContext) when outgoing host is blocked by NetworkBlocklist.
func (ErrBlocked) Error ¶
func (e ErrBlocked) Error() string
type NamedNetwork ¶
type NetworkBlocklist ¶
type NetworkBlocklist struct {
V4 []NamedNetwork
V6 []NamedNetwork
}
NetworkBlocklist is a blocklist that blocks dialing to specified networks.
var PrivateNetworkBlocklist NetworkBlocklist
PrivateNetworkBlocklist is a blocklist that blocks dialing to private networks.
func (NetworkBlocklist) Control ¶
func (l NetworkBlocklist) Control(network, address string, c syscall.RawConn) error
Control is intended to be passed to net.Dialer.Control in order to block dialing to networks specified in l.
Example ¶
transport := http.DefaultTransport.(*http.Transport).Clone()
transport.DialContext = (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
Control: PrivateNetworkBlocklist.Control,
}).DialContext
client := &http.Client{
Transport: transport,
}
_, err := client.Get("http://[::1]/")
fmt.Println(err)
Output: Get "http://[::1]/": dial tcp [::1]:80: host is blocked (Loopback Address)
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