Make extract_sockaddr set variables passed to it rather than pool struct members.

cgminer.c

@@ -684,7 +684,7 @@ static char *set_rr(enum pool_strategy *strategy)
  * stratum+tcp or by detecting a stratum server response */
 bool detect_stratum(struct pool *pool, char *url)
 {
-	if (!extract_sockaddr(pool, url))
+	if (!extract_sockaddr(url, &pool->sockaddr_url, &pool->stratum_port))
 		return false;
 
 	if (!strncasecmp(url, "stratum+tcp://", 14)) {
@@ -5329,7 +5329,7 @@ static void *longpoll_thread(void *userdata);
 static bool stratum_works(struct pool *pool)
 {
 	applog(LOG_INFO, "Testing pool %d stratum %s", pool->pool_no, pool->stratum_url);
-	if (!extract_sockaddr(pool, pool->stratum_url))
+	if (!extract_sockaddr(pool->stratum_url, &pool->sockaddr_url, &pool->stratum_port))
 		return false;
 
 	if (!initiate_stratum(pool))

util.c

@@ -1072,13 +1072,13 @@ double tdiff(struct timeval *end, struct timeval *start)
 	return end->tv_sec - start->tv_sec + (end->tv_usec - start->tv_usec) / 1000000.0;
 }
 
-bool extract_sockaddr(struct pool *pool, char *url)
+bool extract_sockaddr(char *url, char **sockaddr_url, char **sockaddr_port)
 {
 	char *url_begin, *url_end, *ipv6_begin, *ipv6_end, *port_start = NULL;
 	char url_address[256], port[6];
 	int url_len, port_len = 0;
 
-	pool->sockaddr_url = url;
+	*sockaddr_url = url;
 	url_begin = strstr(url, "//");
 	if (!url_begin)
 		url_begin = url;
@@ -1111,8 +1111,8 @@ bool extract_sockaddr(struct pool *pool, char *url)
 	else
 		strcpy(port, "80");
 
-	pool->stratum_port = strdup(port);
-	pool->sockaddr_url = strdup(url_address);
+	*sockaddr_port = strdup(port);
+	*sockaddr_url = strdup(url_address);
 
 	return true;
 }
@@ -1557,7 +1557,7 @@ static bool parse_reconnect(struct pool *pool, json_t *val)
 
 	sprintf(address, "%s:%s", url, port);
 
-	if (!extract_sockaddr(pool, address))
+	if (!extract_sockaddr(address, &pool->sockaddr_url, &pool->stratum_port))
 		return false;
 
 	pool->stratum_url = pool->sockaddr_url;

util.h

@@ -97,7 +97,7 @@ bool stratum_send(struct pool *pool, char *s, ssize_t len);
 bool sock_full(struct pool *pool);
 char *recv_line(struct pool *pool);
 bool parse_method(struct pool *pool, char *s);
-bool extract_sockaddr(struct pool *pool, char *url);
+bool extract_sockaddr(char *url, char **sockaddr_url, char **sockaddr_port);
 bool auth_stratum(struct pool *pool);
 bool initiate_stratum(struct pool *pool);
 bool restart_stratum(struct pool *pool);