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https://issues.apache.org/jira/browse/NIFI-2663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18049114#comment-18049114
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Yuanhao Zhu commented on NIFI-2663:
-----------------------------------

Hey guys, any updates on this one? Do we still plan to have websocket support 
for mqtt?

> Add Websocket support for MQTT protocol
> ---------------------------------------
>
>                 Key: NIFI-2663
>                 URL: https://issues.apache.org/jira/browse/NIFI-2663
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core Framework
>    Affects Versions: 1.0.0, 0.7.0, 0.6.1
>            Reporter: Andrew Psaltis
>            Assignee: Andrew Psaltis
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Today NiFi only supports MQTT over plain TCP using the PublishMQTT and 
> ConsumeMQTT processors. However, there are many cases in the IoT world where 
> WebSockets (secure and not) is the preferred transport mechanism for MQTT.  
> This JIRA is to enhance those processors to also support WS.
> Following are the basics of what is required:
>  
> 1)      Require to configure web socket as the transport protocol, currently 
> PublishMQTT processor supports TCP as the only transport protocol
> 2)      URL input for the Web socket transport should be in the format of 
> ws://IPAddress:websocket_listening_port, as of now it accepts only TCP url, 
> and a bulletin is raised if a protocol other than tcp or ssl is used.
> 3)      Similar to TCP non-secured and secured publisher we should 
> extend/provide processor to support WS and WSS transport protocols



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