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// Copyright 2016 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
//+build !go1.7
package utils
import (
"fmt"
"net"
"net/http"
)
// installHTTPDialShim patches the default HTTP transport so
// that it fails when an attempt is made to dial a non-local
// host.
func installHTTPDialShim(t *http.Transport) {
t.Dial = func(network, addr string) (net.Conn, error) {
if !OutgoingAccessAllowed && !isLocalAddr(addr) {
return nil, fmt.Errorf("access to address %q not allowed", addr)
}
return net.Dial(network, addr)
}
}
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