+ disabled_server_names

Fixes #735

dnscrypt-proxy/config.go

@@ -25,6 +25,7 @@ type Config struct {
 	LogFile                  *string  `toml:"log_file"`
 	UseSyslog                bool     `toml:"use_syslog"`
 	ServerNames              []string `toml:"server_names"`
+	DisabledServerNames      []string `toml:"disabled_server_names"`
 	ListenAddresses          []string `toml:"listen_addresses"`
 	Daemonize                bool
 	UserName                 string `toml:"user_name"`
@@ -399,6 +400,7 @@ func ConfigLoad(proxy *Proxy, svcFlag *string) error {
 
 	if *listAll {
 		config.ServerNames = nil
+		config.DisabledServerNames = nil
 		config.SourceRequireDNSSEC = false
 		config.SourceRequireNoFilter = false
 		config.SourceRequireNoLog = false
@@ -552,6 +554,9 @@ func (config *Config) loadSource(proxy *Proxy, requiredProps stamps.ServerInform
 		} else if registeredServer.stamp.Props&requiredProps != requiredProps {
 			continue
 		}
+		if includesName(config.DisabledServerNames, registeredServer.name) {
+			continue
+		}
 		if config.SourceIPv4 || config.SourceIPv6 {
 			isIPv4, isIPv6 := true, false
 			if registeredServer.stamp.Proto == stamps.StampProtoTypeDoH {

dnscrypt-proxy/example-dnscrypt-proxy.toml

@@ -30,6 +30,11 @@
 # server_names = ['scaleway-fr', 'google', 'yandex', 'cloudflare']
 
 
+## Server names to avoid even if they match all criteria.
+
+# disabled_server_names = []
+
+
 ## List of local addresses and ports to listen to. Can be IPv4 and/or IPv6.
 ## Note: When using systemd socket activation, choose an empty set (i.e. [] ).