CDN 2.2 implements the following features in addition to CDN 2.0 and 2.1:
CDN 2.2 allows to resctrict subscribers access to certain streams in CDN. Access is restricted by keys combined to access control list (ACL) for every stream. Subscriber can request stream plyback by setting a valid key only. A key should be set in a special parameter passed to the server when establishing connection.
Any new stream is published on Origin server as accessible to all subscribers by default. Keys setting and futher ACL management should be done on Origin server using REST API.
Any stream ACL changes are send to all CDN server immediatly, and applied by server as received. Therefore stream playback will be immediatly stopped with Resctricted access error if the subscriber key is not valid anymore.
After stopping a stream, when stream is published again with the same name, it is created with clean ACL, i.e. it is accessible to all the subscribers.
To set subscribers access key parameter name, the following setting should be done in flashphoner.properties file on all CDN servers
client_acl_property_name=aclAuth |
In this case access key parameter will be named aclAuth
To make sure key values will not be intercepted, it is recommended to enable SSL usage in CDN with the following setting
wcs_agent_ssl=true |
REST API is used to manage stream access keys on Origin server
REST query sho;ud be HTTP/HTTPS POST request as follows:
Where:
REST query | Body example | Response example | Response states | Description | ||
---|---|---|---|---|---|---|
/cdn/stream/access_list/add |
| 200 – OK 400 - Bad request 404 - Stream not found 500 – Internal Server Error | Add keys to stream ACL | |||
/cdn/stream/access_list/remove |
| 200 – OK 400 - Bad request 404 - Stream not found 500 – Internal Server Error | Remove keys from stream ACL | |||
/cdn/stream/access_list/delete |
| 200 – OK 400 - Bad request 404 - Stream not found 500 – Internal Server Error | Clean stream ACL | |||
/cdn/stream/access_list/print |
|
| 200 – OK 404 - ACL not found 500 – Internal Server Error | Show stream ACL |
Name | Description | Example |
---|---|---|
name | Имя потока в CDN | test |
keys | Список ключей доступа к потоку | ["key1","key2","key3"] |
To play stream via WebRTC stream access key should be passed as custom parameter to createSession
function
Flashphoner.createSession({urlServer: "wss://test.flashphoner.com:8443", custom: {aclAuth: "key1"}}).on(SESSION_STATUS.ESTABLISHED, function(session){ ... }); |
Parameter name should match to configuration setting, aclAuth
in this case
To play stream via RTMP stream access key should be passed in RTMP connection parameters
rtmp://edge1.flashphoner.com:1935/live?aclAuth=key1/test |
Where
To pass access key in stream parameters, the following setting in flashphoner.properties file on all Edge servers should be set
rtmp_use_stream_params_as_connection=true |
In this case access key can be passed as follows
rtmp://edge1.flashphoner.com:1935/live/test?aclAuth=key1 |
To play stream as HLS, access key should be passed in stream URL
https://edge1.flashphoner.com:8445/test/test.m3u8?aclAuth=key1 |
Where
To play stream via WebRTC in Android application, access key should be passed to Connection.setCustom
method while connection establishing
private Session session; private Connection connection; ... connection = new Connection(); connection.setCustom("aclAuth", "key1"); session.connect(connection); |
Parameter name should match to configuration setting, aclAuth
in this case
CDN 2.2 is compatible to CDN 2.0 and 2.1, only streams with clean ACL (as just published) can be played.
1. It is strongly not recommended to publish streams with same name to two Origin servers in the same CDN.
2. A stream published to one of Origin servers should be played on the same Origin server or any Edge server (through Transcoder server if necessary), but should not be played from another Origin server in the same CDN.
3. ACL can be set to a stream only on Origin server where this stream is published.