-#define NEWSOCKET(FAMILY, NAME) \
- caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port); \
+#define NEWSOCKET(FAMILY, NAME, MULTICAST) \
+ caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
+ if (caglobals.ip.NAME.fd == -1) \
+ { \
+ caglobals.ip.NAME.port = 0; \
+ caglobals.ip.NAME.fd = CACreateSocket(FAMILY, &caglobals.ip.NAME.port, MULTICAST); \
+ } \