rtsp: Log getaddrinfo failures

And forward the logging contexts when needed.

libavformat/rtsp.c

@@ -178,12 +178,19 @@ static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
     }
 }
 
-static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
+static int get_sockaddr(AVFormatContext *s,
+                        const char *buf, struct sockaddr_storage *sock)
 {
     struct addrinfo hints = { 0 }, *ai = NULL;
+    int ret;
+
     hints.ai_flags = AI_NUMERICHOST;
-    if (getaddrinfo(buf, NULL, &hints, &ai))
+    if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
+        av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
+               buf,
+               gai_strerror(ret));
         return -1;
+    }
     memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
     freeaddrinfo(ai);
     return 0;
@@ -391,7 +398,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
         if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
             return;
         get_word_sep(buf1, sizeof(buf1), "/", &p);
-        if (get_sockaddr(buf1, &sdp_ip))
+        if (get_sockaddr(s, buf1, &sdp_ip))
             return;
         ttl = 16;
         if (*p == '/') {
@@ -853,7 +860,8 @@ static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
 }
 
 /* XXX: only one transport specification is parsed */
-static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
+static void rtsp_parse_transport(AVFormatContext *s,
+                                 RTSPMessageHeader *reply, const char *p)
 {
     char transport_protocol[16];
     char profile[16];
@@ -945,7 +953,7 @@ static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
                 if (*p == '=') {
                     p++;
                     get_word_sep(buf, sizeof(buf), ";,", &p);
-                    get_sockaddr(buf, &th->destination);
+                    get_sockaddr(s, buf, &th->destination);
                 }
             } else if (!strcmp(parameter, "source")) {
                 if (*p == '=') {
@@ -1032,7 +1040,8 @@ static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
         handle_rtp_info(rt, url, seq, rtptime);
 }
 
-void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
+void ff_rtsp_parse_line(AVFormatContext *s,
+                        RTSPMessageHeader *reply, const char *buf,
                         RTSPState *rt, const char *method)
 {
     const char *p;
@@ -1049,7 +1058,7 @@ void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
     } else if (av_stristart(p, "Content-Length:", &p)) {
         reply->content_length = strtol(p, NULL, 10);
     } else if (av_stristart(p, "Transport:", &p)) {
-        rtsp_parse_transport(reply, p);
+        rtsp_parse_transport(s, reply, p);
     } else if (av_stristart(p, "CSeq:", &p)) {
         reply->seq = strtol(p, NULL, 10);
     } else if (av_stristart(p, "Range:", &p)) {
@@ -1178,7 +1187,7 @@ start:
                 request = 1;
             }
         } else {
-            ff_rtsp_parse_line(reply, p, rt, method);
+            ff_rtsp_parse_line(s, reply, p, rt, method);
             av_strlcat(rt->last_reply, p,    sizeof(rt->last_reply));
             av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
         }

libavformat/rtsp.h

@@ -459,7 +459,8 @@ typedef struct RTSPStream {
     char crypto_params[100];
 } RTSPStream;
 
-void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
+void ff_rtsp_parse_line(AVFormatContext *s,
+                        RTSPMessageHeader *reply, const char *buf,
                         RTSPState *rt, const char *method);
 
 /**

libavformat/rtspdec.c

@@ -151,7 +151,7 @@ static inline int rtsp_read_request(AVFormatContext *s,
             return ret;
         if (rbuflen > 1) {
             av_log(s, AV_LOG_TRACE, "Parsing[%d]: %s\n", rbuflen, rbuf);
-            ff_rtsp_parse_line(request, rbuf, rt, method);
+            ff_rtsp_parse_line(s, request, rbuf, rt, method);
         }
     } while (rbuflen > 0);
     if (request->seq != rt->seq + 1) {