use 'strict' instead of 'yes' in the 'encryption' parameter

internal/conf/conf.go

@@ -20,7 +20,7 @@ type Encryption int
 const (
 	EncryptionNo Encryption = iota
 	EncryptionOptional
-	EncryptionYes
+	EncryptionStrict
 )
 
 // Conf is the main program configuration.
@@ -123,8 +123,8 @@ func (conf *Conf) fillAndCheck() error {
 	case "optional":
 		conf.EncryptionParsed = EncryptionOptional
 
-	case "yes", "true":
-		conf.EncryptionParsed = EncryptionYes
+	case "strict", "yes", "true":
+		conf.EncryptionParsed = EncryptionStrict
 
 		if _, ok := conf.ProtocolsParsed[gortsplib.StreamProtocolUDP]; ok {
 			return fmt.Errorf("encryption can't be used with the UDP stream protocol")

main.go

@@ -207,7 +207,7 @@ func (p *program) createResources(initial bool) error {
 	}
 
 	if p.serverTLS == nil {
-		if p.conf.EncryptionParsed == conf.EncryptionYes || p.conf.EncryptionParsed == conf.EncryptionOptional {
+		if p.conf.EncryptionParsed == conf.EncryptionStrict || p.conf.EncryptionParsed == conf.EncryptionOptional {
 			p.serverTLS, err = servertls.New(p.conf.RtspsPort, p.conf.ReadTimeout,
 				p.conf.WriteTimeout, p.conf.ServerKey, p.conf.ServerCert, p)
 			if err != nil {

rtsp-simple-server.yml

@@ -13,19 +13,19 @@ logFile: rtsp-simple-server.log
 # The handshake is always performed with TCP.
 protocols: [udp, tcp]
 # encrypt handshake and TCP streams with TLS (RTSPS).
-# available values are "no", "yes", "optional".
+# available values are "no", "strict", "optional".
 encryption: no
 # port of the TCP/RTSP listener. This is used only if encryption is "no" or "optional".
 rtspPort: 8554
-# port of the TCP/TLS/RTSPS listener. This is used only if encryption is "yes" or "optional".
+# port of the TCP/TLS/RTSPS listener. This is used only if encryption is "strict" or "optional".
 rtspsPort: 8555
 # port of the UDP/RTP listener. This is used only if "udp" is in protocols.
 rtpPort: 8000
 # port of the UDP/RTCP listener. This is used only if "udp" is in protocols.
 rtcpPort: 8001
-# path to the server key. This is used only if encryption is "yes" or "optional".
+# path to the server key. This is used only if encryption is "strict" or "optional".
 serverKey: server.key
-# path to the server certificate. This is used only if encryption is "yes" or "optional".
+# path to the server certificate. This is used only if encryption is "strict" or "optional".
 serverCert: server.crt
 # authentication methods.
 authMethods: [basic, digest]