Fixed a consistency problem with channel snapshot and endpoint state.

When channels are added to an endpoint, the code originally posted a channel
snapshot to the endoint's topic directly. Turns out, this is a bad idea.

This causes the endpoint to see an inconsistent view of the channel, since it
will later receive in-flight messages with old channel snapshots.

This patch instead just publishes channel state immediately after setting up
the forward to the endpoint's topic. This gives the endpoints a consistent
view of the channel's state.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@390472 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/channel_internal_api.c b/main/channel_internal_api.c
index ed45ddc..4e5284c 100644 (file)
--- a/main/channel_internal_api.c
+++ b/main/channel_internal_api.c
@@ -1409,22 +1409,9 @@ struct stasis_topic *ast_channel_topic(struct ast_channel *chan)
 int ast_endpoint_add_channel(struct ast_endpoint *endpoint,
        struct ast_channel *chan)
 {
-       RAII_VAR(struct ast_channel_snapshot *, snapshot, NULL, ao2_cleanup);
-       RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
-
        ast_assert(chan != NULL);
        ast_assert(endpoint != NULL);
 
-       snapshot = ast_channel_snapshot_create(chan);
-       if (!snapshot) {
-               return -1;
-       }
-
-       msg = stasis_message_create(ast_channel_snapshot_type(), snapshot);
-       if (!msg) {
-               return -1;
-       }
-
        chan->endpoint_forward =
                stasis_forward_all(chan->topic, ast_endpoint_topic(endpoint));
 
@@ -1432,7 +1419,7 @@ int ast_endpoint_add_channel(struct ast_endpoint *endpoint,
                return -1;
        }
 
-       stasis_publish(ast_endpoint_topic(endpoint), msg);
+       ast_publish_channel_state(chan);
 
        return 0;
 }