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net/http: check for nil, nil return from DialContext as well as Dial

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This commit is contained in:
fangguizhen 2022-12-23 01:15:41 +08:00
parent de6abd7889
commit fd9b0c4193
1 changed files with 5 additions and 1 deletions
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6
src/net/http/transport.go
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@ -1173,7 +1173,11 @@ var zeroDialer net.Dialer
func (t *Transport) dial(ctx context.Context, network, addr string) (net.Conn, error) {
if t.DialContext != nil {
return t.DialContext(ctx, network, addr)
c, err := t.DialContext(ctx, network, addr)
if c == nil && err == nil {
err = errors.New("net/http: Transport.DialContext hook returned (nil, nil)")
}
return c, err
}
if t.Dial != nil {
c, err := t.Dial(network, addr)