From 5cefef591ef6c0fd1c514202b0fcfbe466cab873 Mon Sep 17 00:00:00 2001
From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Date: Thu, 26 Jan 2023 08:37:20 +1100
Subject: rtp-recv: Use getaddrinfo to improve support for ipv6.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/774>
---
 src/modules/rtp/module-rtp-recv.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/src/modules/rtp/module-rtp-recv.c b/src/modules/rtp/module-rtp-recv.c
index a67a993d1..9babf00cb 100644
--- a/src/modules/rtp/module-rtp-recv.c
+++ b/src/modules/rtp/module-rtp-recv.c
@@ -29,6 +29,9 @@
 #include <string.h>
 #include <unistd.h>
 #include <math.h>
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
 
 #include <pulse/rtclock.h>
 #include <pulse/timeval.h>
@@ -677,9 +680,13 @@ static void check_death_event_cb(pa_mainloop_api *m, pa_time_event *t, const str
 int pa__init(pa_module*m) {
     struct userdata *u;
     pa_modargs *ma = NULL;
+#if defined(HAVE_GETADDRINFO)
+    struct addrinfo *sap_addrinfo = NULL;
+#else
     struct sockaddr_in sa4;
 #ifdef HAVE_IPV6
     struct sockaddr_in6 sa6;
+#endif
 #endif
     struct sockaddr *sa;
     socklen_t salen;
@@ -696,6 +703,27 @@ int pa__init(pa_module*m) {
 
     sap_address = pa_modargs_get_value(ma, "sap_address", DEFAULT_SAP_ADDRESS);
 
+#if defined(HAVE_GETADDRINFO)
+    {
+        struct addrinfo hints;
+        char *service;
+
+        pa_zero(hints);
+
+        service = pa_sprintf_malloc("%d", htons(SAP_PORT));
+
+        hints.ai_flags = AI_NUMERICHOST;
+        if (getaddrinfo(sap_address, service, &hints, &sap_addrinfo) != 0) {
+            pa_xfree(service);
+            pa_log("Invalid SAP address '%s'", sap_address);
+            goto fail;
+        }
+        pa_xfree(service);
+
+        sa = sap_addrinfo->ai_addr;
+        salen = sap_addrinfo->ai_addrlen;
+    }
+#else
     if (inet_pton(AF_INET, sap_address, &sa4.sin_addr) > 0) {
         sa4.sin_family = AF_INET;
         sa4.sin_port = htons(SAP_PORT);
@@ -712,6 +740,7 @@ int pa__init(pa_module*m) {
         pa_log("Invalid SAP address '%s'", sap_address);
         goto fail;
     }
+#endif
 
     latency_msec = DEFAULT_LATENCY_MSEC;
     if (pa_modargs_get_value_u32(ma, "latency_msec", &latency_msec) < 0 || latency_msec < 1 || latency_msec > 300000) {
@@ -739,9 +768,18 @@ int pa__init(pa_module*m) {
 
     pa_modargs_free(ma);
 
+#if defined(HAVE_GETADDRINFO)
+    freeaddrinfo(sap_addrinfo);
+#endif
+
     return 0;
 
 fail:
+#if defined(HAVE_GETADDRINFO)
+    if (sap_addrinfo)
+        freeaddrinfo(sap_addrinfo);
+#endif
+
     if (ma)
         pa_modargs_free(ma);
 
-- 
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