feat(custom): support tcp-client proto for OpenVPN

internal/openvpn/extract/extract.go

@@ -81,7 +81,7 @@ func extractProto(line string) (protocol string, err error) {
 	}
 
 	switch fields[1] {
-	case "tcp", "tcp4", "tcp6", "udp", "udp4", "udp6":
+	case "tcp", "tcp4", "tcp6", "tcp-client", "udp", "udp4", "udp6":
 	default:
 		return "", fmt.Errorf("%w: %s", errProtocolNotSupported, fields[1])
 	}

internal/openvpn/extract/extract_test.go

@@ -104,6 +104,10 @@ func Test_extractDataFromLine(t *testing.T) {
 			line:     "proto tcp",
 			protocol: constants.TCP,
 		},
+		"tcp-client": {
+			line:     "proto tcp-client",
+			protocol: "tcp-client",
+		},
 		"extract remote error": {
 			line:  "remote bad",
 			isErr: errHostNotIP,