Web Call Server 5.1 - EN
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The publishStream REST method is a direct invoke method, because a client invokes this method with the stream.publish() command attempting to publish a video stream from the web camera. This operation can be authorized – cancelled or permitted – and parameters of this operation can be redefined on the side of the web server. For example, the field name=’stream1’ changes may be changed to name=’stream2’, and if such a replace succeeds, WCS will publish the stream with the new name stream2.

We have already described the publishStream method above, so here we simply cite the invocation sequence again:

 


 Example:

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POST /rest/my_api/publishStream HTTP/1.1
Accept: application/json, application/*+json
Content-Type: application/json;charset=UTF-8
User-Agent: Java/1.8.0_111
Host: 192.168.1.101
Connection: keep-alive
Content-Length: 3611

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"/192.168.1.102:4388/192.168.1.101:8443",
    "mediaSessionId":"56141d10-fddc-11e6-ac3a-4d67d5b3360d",
    "name":"b4e7",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}
Code Block
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HTTP/1.1 200 OK
Date: Tue, 28 Feb 2017 17:35:43 GMT
Server: Apache/2.2.15 (CentOS)
X-Powered-By: PHP/5.3.3
Content-Length: 3653
Connection: close
Content-Type: application/json

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"\/192.168.1.102:4388\/192.168.1.101:8443",
    "mediaSessionId":"56141d10-fddc-11e6-ac3a-4d67d5b3360d",
    "name":"b4e7",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":"",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}

Authentication

Authentication is similar to that of the connect method. You can send a token or a password here too, as well as permit / forbid the operation based on other parameters.

For authentication you need to configure the publishStream method at the connection stage (connect) and set restOnError:FAIL in the restClientConfig config.

 


 Example:

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POST /rest/my_api/publishStream HTTP/1.1
Accept: application/json, application/*+json
Content-Type: application/json;charset=UTF-8
User-Agent: Java/1.8.0_111
Host: 192.168.1.101
Connection: keep-alive
Content-Length: 3639

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"/192.168.1.102:17749/192.168.1.101:8443",
    "mediaSessionId":"0e17ab50-fdbc-11e6-8a47-c5292ef61cc0",
    "name":"3a88",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC",
    "custom":{
        "token":"abcdef"
    }
}
Code Block
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HTTP/1.1 403 Forbidden
Date: Tue, 28 Feb 2017 13:44:39 GMT
Server: Apache/2.2.15 (CentOS)
X-Powered-By: PHP/5.3.3
Content-Length: 0
Connection: close
Content-Type: text/html; charset=UTF-8

Redefining fields

Redefining fields works when the method operates normally and the 200 OK response is returned. The purpose of redefining fields is, for instance, to hide the real name of the stream on the page from the end user.

...

  1. Enable "restPolicy":"OVERWRITE" in restClientConfig for the publishStream when connecting to the server.
  2. Put a comma-separated list of fields to overwrite in "restOverwrite":"". For example,  "restOverwrite":"name" for restClientConfig. In this case, only the name field – the name of a stream – is overwritten.
  3. In the JSON body of the 200 OK response return the modified name field, and return other fields as they were received from the WCS server.

 


 Example:

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POST /rest/my_api/publishStream HTTP/1.1
Accept: application/json, application/*+json
Content-Type: application/json;charset=UTF-8
User-Agent: Java/1.8.0_111
Host: 192.168.1.101
Connection: keep-alive
Content-Length: 3612

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"/192.168.1.102:12514/192.168.1.101:8443",
    "mediaSessionId":"abbe7e90-fdcd-11e6-9831-bd76c6e822a1",
    "name":"2a0c",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}
Code Block
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HTTP/1.1 200 OK
Date: Tue, 28 Feb 2017 15:50:44 GMT
Server: Apache/2.2.15 (CentOS)
X-Powered-By: PHP/5.3.3
Content-Length: 3669
Connection: close
Content-Type: application/json

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"\/192.168.1.102:12514\/192.168.1.101:8443",
    "mediaSessionId":"abbe7e90-fdcd-11e6-9831-bd76c6e822a1",
    "name":"streamChangedName",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}

Excluding fields from sending

...

 Operation example when the name field – the name of a stream – is excluded:

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Code Block
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POST /rest/my_api/publishStream HTTP/1.1
Accept: application/json, application/*+json
Content-Type: application/json;charset=UTF-8
User-Agent: Java/1.8.0_111
Host: 192.168.1.101
Connection: keep-alive
Content-Length: 3602

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"/192.168.1.102:9232/192.168.1.101:8443",
    "mediaSessionId":"084db2f0-fdd5-11e6-9ba5-6ba06f30ad92",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}
Code Block
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HTTP/1.1 200 OK
Date: Tue, 28 Feb 2017 16:43:26 GMT
Server: Apache/2.2.15 (CentOS)
X-Powered-By: PHP/5.3.3
Content-Length: 3649
Connection: close
Content-Type: application/json

{
    "nodeId":"Hw47CFMBEchVOpBMDr29IxjudnJ1sjOY@192.168.1.101",
    "appKey":"defaultApp",
    "sessionId":"\/192.168.1.102:9232\/192.168.1.101:8443",
    "mediaSessionId":"084db2f0-fdd5-11e6-9ba5-6ba06f30ad92",
    "published":true,
    "hasVideo":true,
    "hasAudio":true,
    "status":"PENDING",
    "sdp":".....",
    "record":false,
    "width":0,
    "height":0,
    "bitrate":0,
    "quality":0,
    "mediaProvider":"WebRTC"
}

Excerpt Include
Using RTMP encoder
Using RTMP encoder
nopaneltrue