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feat: add convert nat-domain-name to nat-ip at the start of neko #489

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feat: add convert nat-domain-name to nat-ip at the start of neko #489

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49 changes: 49 additions & 0 deletions server/internal/config/webrtc.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@ package config

import (
"encoding/json"
"fmt"
"net"
"strconv"
"strings"

Expand Down Expand Up @@ -77,6 +79,53 @@ func (WebRTC) Init(cmd *cobra.Command) error {
}

func (s *WebRTC) Set() {
nat1to1Values := viper.GetStringSlice("nat1to1")
log.Info().
Strs("start convert nat1to1", nat1to1Values)
log.Debug().Strs("nat1to1_input", nat1to1Values).Msg("processing NAT1To1 values")

resolvedIPs := make([]string, 0, len(nat1to1Values))

for _, value := range nat1to1Values {
// Check if the value is already an IP
if net.ParseIP(value) != nil {
log.Debug().Str("value", value).Msg("NAT1To1 value is already an IP address")
resolvedIPs = append(resolvedIPs, value)
continue
}

// Try to resolve domain to IP
log.Debug().Str("domain", value).Msg("attempting to resolve domain to IP")
ips, err := net.LookupIP(value)
if err != nil {
log.Warn().
Str("domain", value).
Err(err).
Msg("failed to resolve NAT1To1 domain to IP")
continue
}

// Add all resolved IPs (both IPv4 and IPv6)
for _, ip := range ips {
resolvedIPs = append(resolvedIPs, ip.String())
log.Debug().
Str("domain", value).
Str("resolved_ip", ip.String()).
Msg("successfully resolved domain to IP")
}
}
fmt.Print("finished ")
fmt.Print("resolvedIPs")

fmt.Print(resolvedIPs)
fmt.Print("nat1to1Values")
fmt.Print(nat1to1Values)

log.Info().
Strs("original_values", nat1to1Values).
Strs("resolved_ips", resolvedIPs).
Msg("NAT1To1 resolution completed")

s.NAT1To1IPs = viper.GetStringSlice("nat1to1")
s.TCPMUX = viper.GetInt("tcpmux")
s.UDPMUX = viper.GetInt("udpmux")
Expand Down