multicast support

service-src/service_multicast.c

@@ -0,0 +1,60 @@
+#include "skynet.h"
+#include "skynet_multicast.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+struct skynet_multicast_group *
+multicast_create() {
+	return skynet_multicast_newgroup();
+}
+
+void
+multicast_release(struct skynet_multicast_group *g) {
+	skynet_multicast_deletegroup(g);
+}
+
+static int
+_maincb(struct skynet_context * context, void * ud, int session, const char * addr, const void * msg, size_t sz) {
+	struct skynet_multicast_group *g = ud;
+	uint32_t source = strtoul(addr+1, NULL, 16);
+	if (source == 0) {
+		char cmd = '\0';
+		uint32_t handle = 0;
+		sscanf(msg,"%c %x",&cmd,&handle);
+		if (handle == 0) {
+			skynet_error(context, "Invalid handle %s",msg);
+			return 0;
+		}
+		switch (cmd) {
+		case 'E':
+			skynet_multicast_entergroup(g, handle);
+			break;
+		case 'L':
+			skynet_multicast_leavegroup(g, handle);
+			break;
+		case 'C':
+			skynet_command(context, "EXIT", NULL);
+			break;
+		default:
+			skynet_error(context, "Invalid command %s",msg);
+			break;
+		}
+		return 0;		
+	} else {
+		struct skynet_multicast_message * mc = skynet_multicast_create(msg, sz, source);
+		skynet_multicast_castgroup(context, g, mc);
+		return 1;
+	}
+}
+
+int
+multicast_init(struct skynet_multicast_group *g, struct skynet_context *ctx, const char * args) {
+	skynet_callback(ctx, g, _maincb);
+
+	return 0;
+}
+
+
+