Publisher and Subscriber

threaded_subsciber.c

@@ -0,0 +1,93 @@
+/*
+ * =====================================================================================
+ *
+ *       Filename:  threaded_subsciber.c
+ *
+ *    Description:  
+ *
+ *        Version:  1.0
+ *        Created:  10/03/24 02:45:48 PM IST
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  YOUR NAME (), 
+ *   Organization:  
+ *
+ * =====================================================================================
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory.h>
+#include <sys/types.h> /*for pid_t*/
+#include <unistd.h>    /*for getpid()*/
+#include <pthread.h>
+#include <stdbool.h>
+#include "notif.h"
+#include "rt.h"
+
+void
+create_subscriber_thread();
+
+extern rt_table_t *
+publisher_get_rt_table();
+
+static void
+test_cb(void *arg, size_t arg_size,
+		nfc_op_t nfc_op_code,
+		uint32_t client_id) {
+
+	rt_entry_t *rt_entry;
+	printf("%s() client : %u, Notified with opcode %s\n",
+			 __FUNCTION__, client_id, nfc_get_str_op_code(nfc_op_code));
+	
+	rt_entry = (rt_entry_t *) arg;
+	
+	printf("%-20s %-4d %-20s %s\n",
+			rt_entry->rt_entry_keys.dest,
+			rt_entry->rt_entry_keys.mask,
+			rt_entry->gw_ip,
+			rt_entry->oif);
+	printf("\n");
+}
+
+static void *
+subscriber_thread_fn(void *arg){
+
+    rt_entry_keys_t rt_entry_keys;
+    
+	/* register for Notif 122.1.1.1/32 */
+	memset(&rt_entry_keys, 0, sizeof(rt_entry_keys_t));
+    strncpy(rt_entry_keys.dest, "122.1.1.1", 16);
+    rt_entry_keys.mask = 32;
+	rt_table_register_for_notification(publisher_get_rt_table(), &rt_entry_keys, sizeof(rt_entry_keys_t), test_cb, *((uint32_t *)arg));	
+
+	/* register for Notif 122.1.1.2/32 */
+	memset(&rt_entry_keys, 0, sizeof(rt_entry_keys_t));
+    strncpy(rt_entry_keys.dest, "122.1.1.5", 16);
+    rt_entry_keys.mask = 32;
+	rt_table_register_for_notification(publisher_get_rt_table(), &rt_entry_keys, sizeof(rt_entry_keys_t), test_cb, *((uint32_t *)arg));	
+	
+	/* register for Notif 122.1.1.3/32 */
+	memset(&rt_entry_keys, 0, sizeof(rt_entry_keys_t));
+    strncpy(rt_entry_keys.dest, "122.1.1.6", 16);
+    rt_entry_keys.mask = 32;
+	rt_table_register_for_notification(publisher_get_rt_table(), &rt_entry_keys, sizeof(rt_entry_keys_t), test_cb, *((uint32_t *)arg));	
+
+	pause();
+	return NULL;
+}
+
+void
+create_subscriber_thread(uint32_t client_id){
+
+    pthread_attr_t attr;
+    pthread_t subs_thread;
+
+    pthread_attr_init(&attr);
+    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+    pthread_create(&subs_thread, &attr,
+            subscriber_thread_fn,
+            (void *)&client_id);
+	printf("Subscriber %u created\n", client_id);
+}