anygatecloud/strom
2
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dns fix

Browse Source
This commit is contained in:
adman
2026-03-20 17:08:54 +01:00
parent b107eba37c
commit 43fea40d08
2 changed files with 18 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files
client/dns.go
+6 -23
View File
@@ -9,34 +9,18 @@ import (
"time"
)
func LookupMinecraftSRV(host string, port uint16) (hostRet string, portRet uint16) {
hostRet = host // in case of error
portRet = port
if port != 25565 {
return
}
_, srvs, err := net.LookupSRV("minecraft", "tcp", host)
if err != nil || len(srvs) == 0 {
return
}
target := strings.TrimSuffix(srvs[0].Target, ".")
hostRet = target
portRet = srvs[0].Port
return
}
type DNSCheckFunc func(addr string) error
// DoDns resolves a DNS name to an IP address
// It should resolve a minecraft compatible address into something net.Dial
func DoDns(in string) (out string, err error) {
func DoDns(in string) (out string, host string, portN uint16, err error) {
return DoDNSChecked(in, nil)
}
// DoDNSChecked resolves a DNS name to an IP address
// It should resolve a minecraft compatible address into something net.Dial
// It also optionally accepts a function to "check" the address
func DoDNSChecked(in string, f DNSCheckFunc) (out string, err error) { // Bad code should match minecraft
func DoDNSChecked(in string, f DNSCheckFunc) (connectTo string, host string, portN uint16, err error) {
// https://mcsrc.dev/1/26.1-pre-1/net/minecraft/client/multiplayer/resolver/ServerAddress#L34
host, port, err := net.SplitHostPort(in)
if err != nil {
@@ -61,7 +45,7 @@ func DoDNSChecked(in string, f DNSCheckFunc) (out string, err error) { // Bad co
if err != nil {
return
}
portN := uint16(porti)
portN = uint16(porti)
outIP, err := net.ResolveIPAddr("ip", host)
if err != nil {
return
@@ -70,12 +54,11 @@ func DoDNSChecked(in string, f DNSCheckFunc) (out string, err error) { // Bad co
if err != nil {
return
}
out = outIP.String() + ":" + port
connectTo = outIP.String() + ":" + port
if portN != 25565 {
return
}
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second) // otherwise this takes 10+ seconds
ctx, cancel := context.WithTimeout(context.Background(), time.Second) // otherwise this takes 10+ seconds
defer cancel()
r := &net.Resolver{}
@@ -95,6 +78,6 @@ func DoDNSChecked(in string, f DNSCheckFunc) (out string, err error) { // Bad co
if err != nil {
return
}
out = outIP.String() + ":" + port
connectTo = outIP.String() + ":" + port
return
}