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fix: add "dns resolve failed" error in dialer

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This commit is contained in:
gVisor bot 2023-02-22 19:14:11 +08:00
parent e063925518
commit 331744e5e3
1 changed files with 50 additions and 77 deletions
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127
component/dialer/dialer.go
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@ -65,18 +65,7 @@ func DialContext(ctx context.Context, network, address string, options ...Option
}
func ListenPacket(ctx context.Context, network, address string, options ...Option) (net.PacketConn, error) {
cfg := &option{
interfaceName: DefaultInterface.Load(),
routingMark: int(DefaultRoutingMark.Load()),
}
for _, o := range DefaultOptions {
o(cfg)
}
for _, o := range options {
o(cfg)
}
cfg := applyOptions(options...)
lc := &net.ListenConfig{}
if cfg.interfaceName != "" {
@ -132,6 +121,35 @@ func dialContext(ctx context.Context, network string, destination netip.Addr, po
return dialer.DialContext(ctx, network, net.JoinHostPort(destination.String(), port))
}
func singleDialContext(ctx context.Context, network string, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
return nil, err
}
var ip netip.Addr
switch network {
case "tcp4", "udp4":
if opt.resolver == nil {
ip, err = resolver.ResolveIPv4ProxyServerHost(ctx, host)
} else {
ip, err = resolver.ResolveIPv4WithResolver(ctx, host, opt.resolver)
}
default:
if opt.resolver == nil {
ip, err = resolver.ResolveIPv6ProxyServerHost(ctx, host)
} else {
ip, err = resolver.ResolveIPv6WithResolver(ctx, host, opt.resolver)
}
}
if err != nil {
err = fmt.Errorf("dns resolve failed:%w", err)
return nil, err
}
return dialContext(ctx, network, ip, port, opt)
}
func dualStackDialContext(ctx context.Context, network, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
@ -178,6 +196,7 @@ func dualStackDialContext(ctx context.Context, network, address string, opt *opt
}
}
if result.error != nil {
result.error = fmt.Errorf("dns resolve failed:%w", result.error)
return
}
result.resolved = true
@ -225,26 +244,6 @@ func dualStackDialContext(ctx context.Context, network, address string, opt *opt
return nil, err
}
func concurrentDualStackDialContext(ctx context.Context, network, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
return nil, err
}
var ips []netip.Addr
if opt.resolver != nil {
ips, err = resolver.LookupIPWithResolver(ctx, host, opt.resolver)
} else {
ips, err = resolver.LookupIPProxyServerHost(ctx, host)
}
if err != nil {
return nil, err
}
return concurrentDialContext(ctx, network, ips, port, opt)
}
func concurrentDialContext(ctx context.Context, network string, ips []netip.Addr, port string, opt *option) (net.Conn, error) {
returned := make(chan struct{})
defer close(returned)
@ -356,77 +355,51 @@ func concurrentDialContext(ctx context.Context, network string, ips []netip.Addr
return nil, finalError
}
func singleDialContext(ctx context.Context, network string, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
return nil, err
}
var ip netip.Addr
switch network {
case "tcp4", "udp4":
if opt.resolver == nil {
ip, err = resolver.ResolveIPv4ProxyServerHost(ctx, host)
} else {
ip, err = resolver.ResolveIPv4WithResolver(ctx, host, opt.resolver)
}
default:
if opt.resolver == nil {
ip, err = resolver.ResolveIPv6ProxyServerHost(ctx, host)
} else {
ip, err = resolver.ResolveIPv6WithResolver(ctx, host, opt.resolver)
}
}
if err != nil {
return nil, err
}
return dialContext(ctx, network, ip, port, opt)
}
func concurrentSingleDialContext(ctx context.Context, network string, address string, opt *option) (net.Conn, error) {
switch network {
case "tcp4", "udp4":
return concurrentIPv4DialContext(ctx, network, address, opt)
default:
return concurrentIPv6DialContext(ctx, network, address, opt)
}
}
func concurrentIPv4DialContext(ctx context.Context, network, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
return nil, err
}
var ips []netip.Addr
if opt.resolver == nil {
ips, err = resolver.LookupIPv4ProxyServerHost(ctx, host)
} else {
ips, err = resolver.LookupIPv4WithResolver(ctx, host, opt.resolver)
switch network {
case "tcp4", "udp4":
if opt.resolver == nil {
ips, err = resolver.LookupIPv4ProxyServerHost(ctx, host)
} else {
ips, err = resolver.LookupIPv4WithResolver(ctx, host, opt.resolver)
}
default:
if opt.resolver == nil {
ips, err = resolver.LookupIPv6ProxyServerHost(ctx, host)
} else {
ips, err = resolver.LookupIPv6WithResolver(ctx, host, opt.resolver)
}
}
if err != nil {
err = fmt.Errorf("dns resolve failed:%w", err)
return nil, err
}
return concurrentDialContext(ctx, network, ips, port, opt)
}
func concurrentIPv6DialContext(ctx context.Context, network, address string, opt *option) (net.Conn, error) {
func concurrentDualStackDialContext(ctx context.Context, network, address string, opt *option) (net.Conn, error) {
host, port, err := net.SplitHostPort(address)
if err != nil {
return nil, err
}
var ips []netip.Addr
if opt.resolver == nil {
ips, err = resolver.LookupIPv6ProxyServerHost(ctx, host)
if opt.resolver != nil {
ips, err = resolver.LookupIPWithResolver(ctx, host, opt.resolver)
} else {
ips, err = resolver.LookupIPv6WithResolver(ctx, host, opt.resolver)
ips, err = resolver.LookupIPProxyServerHost(ctx, host)
}
if err != nil {
err = fmt.Errorf("dns resolve failed:%w", err)
return nil, err
}