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fix: dualStack confusing error on ipv4 failed connect

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Mitt 2023-08-29 12:23:16 +00:00 committed by Larvan2
parent d099375200
commit 86cf1dd54b
1 changed files with 17 additions and 4 deletions
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21
component/dialer/dialer.go
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@ -162,8 +162,11 @@ func concurrentDualStackDialContext(ctx context.Context, network string, ips []n
func dualStackDialContext(ctx context.Context, dialFn dialFunc, network string, ips []netip.Addr, port string, opt *option) (net.Conn, error) { func dualStackDialContext(ctx context.Context, dialFn dialFunc, network string, ips []netip.Addr, port string, opt *option) (net.Conn, error) {
ipv4s, ipv6s := resolver.SortationAddr(ips) ipv4s, ipv6s := resolver.SortationAddr(ips)
preferIPVersion := opt.prefer if len(ipv4s) == 0 && len(ipv6s) == 0 {
return nil, ErrorNoIpAddress
}
preferIPVersion := opt.prefer
fallbackTicker := time.NewTicker(fallbackTimeout) fallbackTicker := time.NewTicker(fallbackTimeout)
defer fallbackTicker.Stop() defer fallbackTicker.Stop()
results := make(chan dialResult) results := make(chan dialResult)
@ -182,11 +185,21 @@ func dualStackDialContext(ctx context.Context, dialFn dialFunc, network string,
}() }()
result.Conn, result.error = dialFn(ctx, network, ips, port, opt) result.Conn, result.error = dialFn(ctx, network, ips, port, opt)
} }
go racer(ipv4s, preferIPVersion != 6)
go racer(ipv6s, preferIPVersion != 4) var wait int
if len(ipv4s) != 0 {
wait++
go racer(ipv4s, preferIPVersion != 6)
}
if len(ipv6s) != 0 {
wait++
go racer(ipv6s, preferIPVersion != 4)
}
var fallback dialResult var fallback dialResult
var errs []error var errs []error
for i := 0; i < 2; { for i := 0; i < wait; {
select { select {
case <-fallbackTicker.C: case <-fallbackTicker.C:
if fallback.error == nil && fallback.Conn != nil { if fallback.error == nil && fallback.Conn != nil {