Finished address book, but broke networking. Needs debug

main.c

@@ -223,6 +223,8 @@ int initialize_everything(char* lua_file) {
 			deinitialize_everything();
 			return 0;
 		}
+		// initialize the address book
+		oct_network_ab_init();
 	}
 	
 	if (config.needs_termbox) {
@@ -236,6 +238,8 @@ int deinitialize_everything() {
 	tb_shutdown();
 	if (L) lua_close(L);
 	oct_tb_sprite_list_deinitialize();
+	oct_network_ab_deinit();
+	//oct_network_node_deinit();
 	oct_log_deinit();
 	return 1;
 }

oct_networking.c

@@ -141,6 +141,7 @@ int oct_network_recv_msg() {
 		// recvfrom returns -1 if nothing was received
 		// Need MSG_DONTWAIT flag for nonblocking
 		if (recvfrom(oct_network_node.sfd, oct_network_node.recv_buffer, BUFFER_SIZE, MSG_DONTWAIT, (struct sockaddr *) &peer_addr, &peer_addrlen) > 0) {
+			OCT_LOG_INFO("Received message!");
 			int s = getnameinfo((struct sockaddr *) &peer_addr,
 								peer_addrlen, oct_network_node.recv_addr, NI_MAXHOST, oct_network_node.recv_port, NI_MAXSERV, NI_NUMERICSERV);
 			if (s != 0) {
@@ -156,14 +157,29 @@ int oct_network_recv_msg() {
 
 int oct_network_send_msg() {
 	if (oct_network_node.needs_send) {
-		int sfd = oct_network_init_socket(oct_network_node.send_addr, oct_network_node.send_port);
+		struct oct_network_ab_entry* e;
+		e = oct_network_ab_find(oct_network_node.send_addr, oct_network_node.send_port);
+		if (!e) {
+			OCT_LOG_INFO("Not in address book: %s:%s", oct_network_node.send_addr, oct_network_node.send_port);
+			e = oct_network_ab_insert(oct_network_node.send_addr, oct_network_node.send_port);
+			if (!e) {
+				// Give up...
+				oct_network_node.needs_send = 0;
+				return 0;
+			}
+		}
+		else {
+			OCT_LOG_INFO("Found in address book: %s:%s", oct_network_node.send_addr, oct_network_node.send_port);
+		}
+		int sfd = e->sfd;
+		
 		ssize_t length = strlen(oct_network_node.send_buffer);
+		OCT_LOG_INFO("Sending message");
 		if (write(sfd, oct_network_node.send_buffer, length) != length) {
 			OCT_LOG_WARNING("Partial write when sending message");
 			return -1;
 		}
 		oct_network_node.needs_send = 0;
-		close(sfd);
 	}
 	return 1;
 }
@@ -198,7 +214,7 @@ void oct_network_ab_init() {
 	oct_network_ab.last = NULL;
 }
 
-int oct_network_ab_insert(char* addr, char* port) {
+struct oct_network_ab_entry* oct_network_ab_insert(char* addr, char* port) {
 	// First create the entry
 	struct oct_network_ab_entry* e = (struct oct_network_ab_entry*)malloc(sizeof(struct oct_network_ab_entry));
 	if (!e) {
@@ -208,8 +224,9 @@ int oct_network_ab_insert(char* addr, char* port) {
 	// Then, create the socket
 	if ((e->sfd = oct_network_init_socket(addr, port)) < 0) {
 		free(e);
-		return 0;
+		return NULL;
 	}
+	OCT_LOG_INFO("CREATED NEW SOCKET");
 	e->next = NULL;
 	e->prev = oct_network_ab.last;
 	strncpy(e->addr, addr, NI_MAXHOST);
@@ -223,15 +240,17 @@ int oct_network_ab_insert(char* addr, char* port) {
 	oct_network_ab.last = e;
 	oct_network_ab.size++;
 	
-	return 1;
+	return e;
 }
 
 int oct_network_ab_remove(struct oct_network_ab_entry* e) {
 	// First, remove node from linked list and fix
 	if (e == oct_network_ab.first) {
 		oct_network_ab.first = e->next;
+		if (e->next) {
 			e->next->prev = NULL;
 		}
+	}
 	else if (e == oct_network_ab.last) {
 		oct_network_ab.last = e->prev;
 		e->prev->next = NULL;
@@ -248,6 +267,18 @@ int oct_network_ab_remove(struct oct_network_ab_entry* e) {
 	return 1;
 }
 
+struct oct_network_ab_entry* oct_network_ab_find(char* addr, char* port) {
+	struct oct_network_ab_entry* crawler = oct_network_ab.first;
+	while (crawler != NULL) {
+		if (strncmp(crawler->addr, addr, NI_MAXHOST) == 0 &&
+			strncmp(crawler->port, port, NI_MAXSERV) == 0) {
+			return crawler;
+		}
+		crawler = crawler->next;
+	}	
+	return NULL;
+}
+
 void oct_network_ab_deinit() {
 	while (oct_network_ab.first) {
 		oct_network_ab_remove(oct_network_ab.first);

oct_networking.h

@@ -30,8 +30,9 @@ int oct_network_recv_msg_lua(lua_State* L);
 int oct_network_send_msg_lua(lua_State* L);
 
 void oct_network_ab_init();
-int oct_network_ab_insert(char* addr, char* port);
+struct oct_network_ab_entry* oct_network_ab_insert(char* addr, char* port);
 int oct_network_ab_remove(struct oct_network_ab_entry* e);
+struct oct_network_ab_entry* oct_network_ab_find(char* addr, char* port);
 void oct_network_ab_deinit();