RTSP: Don't store the connection handles in local variables

This removes some useless copying of handles, and simplifies error handling.

Patch by Josh Allmann, joshua dot allmann at gmail

Originally committed as revision 23648 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/rtsp.c

@@ -1490,7 +1490,6 @@ int ff_rtsp_connect(AVFormatContext *s)
     RTSPState *rt = s->priv_data;
     char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
     char *option_list, *option, *filename;
-    URLContext *rtsp_hd, *rtsp_hd_out;
     int port, err, tcp_fd;
     RTSPMessageHeader reply1 = {}, *reply = &reply1;
     int lower_transport_mask = 0;
@@ -1578,7 +1577,7 @@ redirect:
                  av_get_random_seed(), av_get_random_seed());
 
         /* GET requests */
-        if (url_open(&rtsp_hd, httpname, URL_RDONLY) < 0) {
+        if (url_open(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
             err = AVERROR(EIO);
             goto fail;
         }
@@ -1590,18 +1589,16 @@ redirect:
                  "Pragma: no-cache\r\n"
                  "Cache-Control: no-cache\r\n",
                  sessioncookie);
-        ff_http_set_headers(rtsp_hd, headers);
+        ff_http_set_headers(rt->rtsp_hd, headers);
 
         /* complete the connection */
-        if (url_read(rtsp_hd, NULL, 0)) {
-            url_close(rtsp_hd);
+        if (url_read(rt->rtsp_hd, NULL, 0)) {
             err = AVERROR(EIO);
             goto fail;
         }
 
         /* POST requests */
-        if (url_open(&rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
-            url_close(rtsp_hd);
+        if (url_open(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
             err = AVERROR(EIO);
             goto fail;
         }
@@ -1615,23 +1612,21 @@ redirect:
                  "Content-Length: 32767\r\n"
                  "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
                  sessioncookie);
-        ff_http_set_headers(rtsp_hd_out, headers);
-        ff_http_set_chunked_transfer_encoding(rtsp_hd_out, 0);
+        ff_http_set_headers(rt->rtsp_hd_out, headers);
+        ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
 
     } else {
         /* open the tcp connection */
         ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
-        if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
+        if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
             err = AVERROR(EIO);
             goto fail;
         }
-        rtsp_hd_out = rtsp_hd;
+        rt->rtsp_hd_out = rt->rtsp_hd;
     }
-    rt->rtsp_hd = rtsp_hd;
-    rt->rtsp_hd_out = rtsp_hd_out;
     rt->seq = 0;
 
-    tcp_fd = url_get_file_handle(rtsp_hd);
+    tcp_fd = url_get_file_handle(rt->rtsp_hd);
     if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
         getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
                     NULL, 0, NI_NUMERICHOST);