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    Stream Push/Interruption Event Notification

    Last updated: 2021-03-12 11:24:01
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      After an CSS feature is enabled, you can configure the registered callback domain name in the push callback template to have the CSS backend call back the push result.
      You need to understand how to receive messages on Tencent Cloud CSS before reading this document. For more information, please see How to Receive Event Notification.

      Stream Push/Interruption Event Parameter Description

      Event type parameters

      Event Type Field Value Description
      CSS push event_type = 1
      CSS stream interruption event_type = 0

      Common callback parameters

      Field NameTypeDescription
      t int64 Expiration time, which is the Unix timestamp when the event notification signature expires.
      • The default expiration time of a message notification from Tencent Cloud is 10 minutes. If the time specified by the `t` value in a message notification has elapsed, it can be determined that this notification is invalid, thereby preventing network replay attacks.
      • The format of `t` is a decimal Unix timestamp, i.e., the number of seconds that has elapsed since January 01, 1970 00:00 (UTC/GMT time).
      sign string Security signature of event notification (sign = MD5(key + t)).
      Note: Tencent Cloud splices the encryption `key` and `t`, calculates the `sign` value through MD5, and places it in the notification message. After your backend server receives the notification message, it can confirm whether the `sign` is correct based on the same algorithm and then determine whether the message is indeed from the Tencent Cloud backend.

      Note：

      <span id="key"></span>key is the callback key in Event Center > CSS Callback, which is mainly used for authentication. In order to protect the security of your data, we recommend you enter it.

      Callback message parameters

      Field name Type Description
      appid int User APPID
      app string Push domain name
      appname string Push path
      stream_id string CSS stream name
      channel_id string The value is the same as CSS stream name
      event_time int64 Unix timestamp of event message generation
      sequence string Message serial number, which is used to identify a push event. A push event generates push and interruption messages with the same serial number
      node string CSS access point IP
      user_ip string User push IP
      stream_param string User push URL parameters
      push_duration string Push duration of stream interruption event notification in milliseconds
      errcode int Error code of stream interruption
      errmsg string Error description of stream interruption

      Stream push/interruption error codes

      errcode Error Description Cause
      1 recv rtmp deleteStream The host interrupts the stream
      2 recv rtmp closeStream The host interrupts the stream
      3 recv() return 0 The host disconnects the TCP connection
      4 recv() return error A TCP connection exception occurs for the host
      7 rtmp message large than 1M An exception occurs in the received streaming data
      Others CSS service internal exception If you need help, contact your Tencent Cloud sales rep or submit a ticket

      Sample callback message

      {
"app":"test.domain.com",

"appid":12345678,

"appname":"live",

"channel_id":"test_stream",

"errcode":0,

"errmsg":"ok",

"event_time":1545115790,

"event_type":1,

"node":"100.121.160.92",

"sequence":"6674468118806626493",

"stream_id":"test_stream",

"stream_param":"stream_param=test",

"user_ip":"119.29.94.245",

"sign":"ca3e25e5dc17a6f9909a9ae7281e300d",

"t":1545030873
}

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