I run the 'testH264VideoStreamer' app and view the video with an
RTSP client (eg VLC).
If I kill 'testH264VideoStreamer' while the client is connected and
then try to run it again
straight away I get the following error:
Failed to create RTSP server: bind() error (port number: 8554):
Address already in use
I ran netstat and found that the cause of this error is that the
socket is in the TIME_WAIT
state. You need to wait until the TIME_WAIT timeout period elapses.
I found a way around this by editing the setupStreamSocket()
function to set the
SO_LINGER option with a timeout of 0 on the socket to force the
server to abort the
connection. Would that be a useful change to the code (maybe with a
linger timeout > 0 )
or would it cause other side effects?
I'm not sure. This web page
http://developerweb.net/viewtopic.php?id=2982
suggests that SO_LINGER is not very portable, and might not always do
what you want. (Other references (e.g., Stevens' book) also notes
the (albeit remote) possibility of data corruption if you were to
restart a server before the TIME_WAIT period ends.) So I'd be
reluctant to add this to the code just to satisfy people's
impatience. Instead, just wait a few seconds, and you'll be able to
restart your server.
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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