mosq->want_write should be cleared immediately before a call to SSL_write.

This allows clients using mosquitto_want_write() to get accurate results.

ChangeLog.txt

@@ -1,3 +1,7 @@
+Client library:
+- mosq->want_write should be cleared immediately before a call to SSL_write,
+  to allow clients using mosquitto_want_write() to get accurate results.
+
 1.4.7 - 20151221
 ================
 

lib/mosquitto.c

@@ -863,7 +863,6 @@ int mosquitto_loop(struct mosquitto *mosq, int timeout, int max_packets)
 		if(mosq->ssl){
 			if(mosq->want_write){
 				FD_SET(mosq->sock, &writefds);
-				mosq->want_write = false;
 			}else if(mosq->want_connect){
 				/* Remove possible FD_SET from above, we don't want to check
 				 * for writing if we are still connecting, unless want_write is

lib/net_mosq.c

@@ -712,6 +712,7 @@ ssize_t _mosquitto_net_write(struct mosquitto *mosq, void *buf, size_t count)
 	errno = 0;
 #ifdef WITH_TLS
 	if(mosq->ssl){
+		mosq->want_write = false;
 		ret = SSL_write(mosq->ssl, buf, count);
 		if(ret < 0){
 			err = SSL_get_error(mosq->ssl, ret);