[344] Fix leaks and incorrect connect call.

lib/net_mosq.h

@@ -63,6 +63,7 @@ int _mosquitto_socket_close(struct mosquitto *mosq);
 int _mosquitto_try_connect(struct mosquitto *mosq, const char *host, uint16_t port, mosq_sock_t *sock, const char *bind_address, bool blocking);
 int _mosquitto_try_connect_step1(struct mosquitto *mosq, const char *host);
 int _mosquitto_try_connect_step2(struct mosquitto *mosq, uint16_t port, mosq_sock_t *sock);
+int _mosquitto_socket_connect_step3(struct mosquitto *mosq, const char *host, uint16_t port, const char *bind_address, bool blocking);
 int _mosquitto_socket_nonblock(mosq_sock_t sock);
 int _mosquitto_socketpair(mosq_sock_t *sp1, mosq_sock_t *sp2);
 

src/bridge.c

@@ -238,7 +238,21 @@ int mqtt3_bridge_connect_step2(struct mosquitto_db *db, struct mosquitto *contex
 	if(!context || !context->bridge) return MOSQ_ERR_INVAL;
 
 	_mosquitto_log_printf(NULL, MOSQ_LOG_NOTICE, "Connecting bridge %s (%s:%d)", context->bridge->name, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port);
-	rc = _mosquitto_socket_connect(context, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port, NULL, false);
+	rc = _mosquitto_try_connect_step2(context, context->bridge->addresses[context->bridge->cur_address].port, &context->sock);
+	if(rc > 0 ){
+		if(rc == MOSQ_ERR_TLS){
+			_mosquitto_socket_close(db, context);
+			return rc; /* Error already printed */
+		}else if(rc == MOSQ_ERR_ERRNO){
+			_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", strerror(errno));
+		}else if(rc == MOSQ_ERR_EAI){
+			_mosquitto_log_printf(NULL, MOSQ_LOG_ERR, "Error creating bridge: %s.", gai_strerror(errno));
+		}
+
+		return rc;
+	}
+
+	rc = _mosquitto_socket_connect_step3(context, context->bridge->addresses[context->bridge->cur_address].address, context->bridge->addresses[context->bridge->cur_address].port, NULL, false);
 	if(rc > 0 ){
 		if(rc == MOSQ_ERR_TLS){
 			_mosquitto_socket_close(db, context);

src/loop.c

@@ -250,6 +250,10 @@ int mosquitto_main_loop(struct mosquitto_db *db, mosq_sock_t *listensock, int li
 #ifdef __linux__
 						if(context->adns){
 							/* Waiting on DNS lookup */
+							rc = gai_error(context->adns);
+							if(rc == EAI_INPROGRESS){
+								/* Just keep on waiting */
+							}else if(rc == 0){
 								rc = mqtt3_bridge_connect_step2(db, context);
 								if(rc == MOSQ_ERR_SUCCESS){
 									pollfds[pollfd_index].fd = context->sock;
@@ -266,6 +270,14 @@ int mosquitto_main_loop(struct mosquitto_db *db, mosq_sock_t *listensock, int li
 										context->bridge->cur_address = 0;
 									}
 								}
+							}else{
+								/* Need to retry */
+								if(context->adns->ar_result){
+									freeaddrinfo(context->adns->ar_result);
+								}
+								_mosquitto_free(context->adns);
+								context->adns = NULL;
+							}
 						}else{
 							rc = mqtt3_bridge_connect_step1(db, context);
 							if(rc){