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fix: make doh truly singleton

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This commit is contained in:
ohaiibuzzle 2024-08-11 19:35:02 +07:00
parent c93ddd67e0
commit e9de332163
1 changed files with 27 additions and 23 deletions
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4
dns/doh.go
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@ -8,6 +8,7 @@ import (
"net" "net"
"net/http" "net/http"
"strings" "strings"
"sync"
"time" "time"
"github.com/miekg/dns" "github.com/miekg/dns"
@ -20,8 +21,10 @@ type DoHClient struct {
} }
var client *DoHClient var client *DoHClient
var clientOnce sync.Once
func GetDoHClient(upstream string) *DoHClient { func GetDoHClient(upstream string) *DoHClient {
clientOnce.Do(func() {
if client == nil { if client == nil {
if !strings.HasPrefix(upstream, "https://") { if !strings.HasPrefix(upstream, "https://") {
upstream = "https://" + upstream upstream = "https://" + upstream
@ -49,6 +52,7 @@ func GetDoHClient(upstream string) *DoHClient {
c: c, c: c,
} }
} }
})
return client return client
} }