--- a/src/core/ngx_inet.h
+++ b/src/core/ngx_inet.h
@@ -12,21 +12,26 @@
 #include <ngx_core.h>
 
 
-#define NGX_INET_ADDRSTRLEN   (sizeof("255.255.255.255") - 1)
-#define NGX_INET6_ADDRSTRLEN                                                 \
-    (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") - 1)
-
-#define NGX_SOCKADDR_STRLEN   (NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1)
-
-
 /*
- * TODO: autoconfigure NGX_SOCKADDRLEN as
+ * TODO: autoconfigure NGX_SOCKADDRLEN and NGX_SOCKADDR_STRLEN as
  *       sizeof(struct sockaddr_storage)
  *       sizeof(struct sockaddr_un)
  *       sizeof(struct sockaddr_in6)
  *       sizeof(struct sockaddr_in)
  */
 
+#define NGX_INET_ADDRSTRLEN   (sizeof("255.255.255.255") - 1)
+#define NGX_INET6_ADDRSTRLEN                                                 \
+    (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") - 1)
+#define NGX_UNIX_ADDRSTRLEN                                                  \
+    (sizeof(struct sockaddr_un) - offsetof(struct sockaddr_un, sun_path))
+
+#if (NGX_HAVE_UNIX_DOMAIN)
+#define NGX_SOCKADDR_STRLEN   (sizeof("unix:") - 1 + NGX_UNIX_ADDRSTRLEN)
+#else
+#define NGX_SOCKADDR_STRLEN   (NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1)
+#endif
+
 #if (NGX_HAVE_UNIX_DOMAIN)
 #define NGX_SOCKADDRLEN       sizeof(struct sockaddr_un)
 #else
@@ -65,7 +70,7 @@ typedef struct {
     struct sockaddr          *sockaddr;
     socklen_t                 socklen;
     ngx_str_t                 name;
-} ngx_peer_addr_t;
+} ngx_addr_t;
 
 
 typedef struct {
@@ -89,7 +94,7 @@ typedef struct {
     socklen_t                 socklen;
     u_char                    sockaddr[NGX_SOCKADDRLEN];
 
-    ngx_peer_addr_t          *addrs;
+    ngx_addr_t               *addrs;
     ngx_uint_t                naddrs;
 
     char                     *err;
@@ -97,13 +102,18 @@ typedef struct {
 
 
 in_addr_t ngx_inet_addr(u_char *text, size_t len);
+#if (NGX_HAVE_INET6)
+ngx_int_t ngx_inet6_addr(u_char *p, size_t len, u_char *addr);
+size_t ngx_inet6_ntop(u_char *p, u_char *text, size_t len);
+#endif
 size_t ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len,
     ngx_uint_t port);
 size_t ngx_inet_ntop(int family, void *addr, u_char *text, size_t len);
 ngx_int_t ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr);
+ngx_int_t ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text,
+    size_t len);
 ngx_int_t ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u);
 ngx_int_t ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u);
 
 
-
 #endif /* _NGX_INET_H_INCLUDED_ */