Revert "cleanup: general removal of TODO (and similar) comments"

This reverts commit 64e959ffe3.

Feedback-by: Dan Fandrich
URL: http://curl.haxx.se/mail/lib-2015-11/0062.html

lib/rtsp.c

@@ -42,6 +42,16 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
+/*
+ * TODO (general)
+ *  -incoming server requests
+ *      -server CSeq counter
+ *  -digest authentication
+ *  -connect thru proxy
+ *  -pipelining?
+ */
+
+
 #define RTP_PKT_CHANNEL(p)   ((int)((unsigned char)((p)[1])))
 
 #define RTP_PKT_LENGTH(p)  ((((int)((unsigned char)((p)[2]))) << 8) | \
@@ -212,6 +222,7 @@ static CURLcode rtsp_done(struct connectdata *conn,
     else if(data->set.rtspreq == RTSPREQ_RECEIVE &&
             (conn->proto.rtspc.rtp_channel == -1)) {
       infof(data, "Got an RTP Receive with a CSeq of %ld\n", CSeq_recv);
+      /* TODO CPC: Server -> Client logic here */
     }
   }
 
@@ -317,6 +328,8 @@ static CURLcode rtsp_do(struct connectdata *conn, bool *done)
     return CURLE_BAD_FUNCTION_ARGUMENT;
   }
 
+  /* TODO: proxy? */
+
   /* Stream URI. Default to server '*' if not specified */
   if(data->set.str[STRING_RTSP_STREAM_URI]) {
     p_stream_uri = data->set.str[STRING_RTSP_STREAM_URI];