Htnuts

include/nng/nng.h

@@ -1100,6 +1100,11 @@ NNG_DECL const char *nng_url_scheme(const nng_url *);
 // the scheme.
 NNG_DECL uint32_t nng_url_port(const nng_url *);
 
+// Update a URL with a zero port to a non-zero port (useful
+// after a bind to port 0).  Does nothing if the URL's port is not
+// zero to start with.
+NNG_DECL void nng_url_resolve_port(nng_url *url, uint32_t port);
+
 // hostname part of URL, can be NULL if irerelvant to scheme
 const char *nng_url_hostname(const nng_url *);
 

src/core/url.c

@@ -719,6 +719,14 @@ nng_url_port(const nng_url *url)
 	return (url->u_port);
 }
 
+void
+nng_url_resolve_port(nng_url *url, uint32_t port)
+{
+	if (url->u_port == 0) {
+		url->u_port = port;
+	}
+}
+
 const char *
 nng_url_hostname(const nng_url *url)
 {

src/supplemental/http/CMakeLists.txt

@@ -26,3 +26,4 @@ nng_sources_if(NNG_SUPP_HTTP
         http_public.c
         http_schemes.c
         http_server.c)
+nng_test_if(NNG_SUPP_HTTP http_server_test)