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all: add local caching

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This commit adds config params to enable local DNS response caching and
control its behavior, allow tweaking the cache size, ttl override and
serving stale response.
This commit is contained in:
Cuong Manh Le
2022-12-21 00:29:04 +07:00
committed by Cuong Manh Le
parent fa3c3e8a29
commit 30fefe7ab9
7 changed files with 192 additions and 10 deletions
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19
config.go
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@@ -64,10 +64,14 @@ type Config struct {
// ServiceConfig specifies the general ctrld config.
type ServiceConfig struct {
LogLevel string `mapstructure:"log_level" toml:"log_level"`
LogPath string `mapstructure:"log_path" toml:"log_path"`
Daemon bool `mapstructure:"-" toml:"-"`
AllocateIP bool `mapstructure:"-" toml:"-"`
LogLevel string `mapstructure:"log_level" toml:"log_level"`
LogPath string `mapstructure:"log_path" toml:"log_path"`
CacheEnable bool `mapstructure:"cache_enable" toml:"cache_enable"`
CacheSize int `mapstructure:"cache_size" toml:"cache_size"`
CacheTTLOverride int `mapstructure:"cache_ttl_override" toml:"cache_ttl_override"`
CacheServeStale bool `mapstructure:"cache_serve_stale" toml:"cache_serve_stale"`
Daemon bool `mapstructure:"-" toml:"-"`
AllocateIP bool `mapstructure:"-" toml:"-"`
}
// NetworkConfig specifies configuration for networks where ctrld will handle requests.
@@ -179,11 +183,8 @@ func (uc *UpstreamConfig) setupDOH3Transport() {
if err != nil {
return nil, err
}
localAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0}
if strings.Index(uc.BootstrapIP, ":") > -1 {
localAddr = &net.UDPAddr{IP: net.IPv6zero, Port: 0}
}
udpConn, err := net.ListenUDP("udp", localAddr)
udpConn, err := net.ListenUDP("udp", nil)
if err != nil {
return nil, err
}