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RemoveChannelSubscribers
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RemoveChannelSubscribers

[Experimental]

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removes all subscribers from the specified channel.

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RemoveChannelSubscribers[channel,user]

removes the specified user from the subscriber list.

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RemoveChannelSubscribers[channel,{user1,user2,…}]

removes the specified subscribers useri.

Details and Options

  • In RemoveChannelSubscribers[channel,…], channel can be specified as a channel object or in any of the forms used inside ChannelObject.
  • RemoveChannelSubscribers attempts to stop the corresponding ChannelListener object in the subscriber's session, but this is not a guaranteed operation and should not be relied on for channel security.
  • You must have execute permission on a channel to remove its subscribers.

Examples

open allclose all

Basic Examples  (1)Summary of the most common use cases

Subscribe to a channel and check the subscriber list:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-hkegyp
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-qt5elv
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-ex8rf8
Out[3]=3

Terminate subscription and remove the channel:

In[4]:=4
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https://wolfram.com/xid/01lsmwlj2m8qe305w-xhphqf
In[5]:=5
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https://wolfram.com/xid/01lsmwlj2m8qe305w-t9e4ov
Out[5]=5
In[6]:=6
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https://wolfram.com/xid/01lsmwlj2m8qe305w-ufja3n

Scope  (2)Survey of the scope of standard use cases

Start listening on a channel and remove the subscription for the specified user:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-417ds4
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-vcz2ll

Delete the channel:

In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-b2myfj

Remove all subscribers of a channel:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-37l68u
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-vlw2ps

Delete the channel:

In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-8qpgl

Applications  (2)Sample problems that can be solved with this function

Administration by Channel Creator  (1)

Create a public channel and start listening:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-zna30l
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-fff396
Out[2]=2

Let another user listen on your channel by executing the following command in their Wolfram Language session:

In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-f1gaui
Out[3]=3

Current subscribers on the channel:

In[4]:=4
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https://wolfram.com/xid/01lsmwlj2m8qe305w-ewzzj0
Out[4]=4

Unsubscribe the other user:

In[5]:=5
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https://wolfram.com/xid/01lsmwlj2m8qe305w-cz0rfr

Only the current user remains on the channel:

In[6]:=6
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https://wolfram.com/xid/01lsmwlj2m8qe305w-oed7q6
Out[6]=6

Clean up:

In[7]:=7
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https://wolfram.com/xid/01lsmwlj2m8qe305w-76eka
Out[7]=7
In[8]:=8
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https://wolfram.com/xid/01lsmwlj2m8qe305w-4wzr3u
Out[8]=8

Administration by Third Parties  (1)

Create a public channel and grant the "Execute" privileges to another user:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-t8elz8
Out[1]=1

Start listening on the channel:

In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-g1ng2l
Out[2]=2

Let the other user terminate your subscription by executing the following command in their session:

In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-3c6hg

The channel no longer has subscribers:

In[4]:=4
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https://wolfram.com/xid/01lsmwlj2m8qe305w-4y0bsm
Out[4]=4

Clean up:

In[5]:=5
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https://wolfram.com/xid/01lsmwlj2m8qe305w-c0dltv
Out[5]=5

Properties & Relations  (3)Properties of the function, and connections to other functions

RemoveChannelListener terminates a subscription in the current session directly:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-pq67fc
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-y7kywi
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-q4kf6q
Out[3]=3

Clean up:

In[4]:=4
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https://wolfram.com/xid/01lsmwlj2m8qe305w-q9yyip

RemoveChannelSubscribers terminates the current subscription, but does not prevent the user from resubscribing:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-0mwzkw
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-74h14b
In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-pjiby8
Out[3]=3

Clean up:

In[4]:=4
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https://wolfram.com/xid/01lsmwlj2m8qe305w-tcnkjy

Revoking listening privileges by setting channel permissions prevents future access to the channel, but does not affect the currently active listeners. Use RemoveChannelSubscribers in addition to SetOptions to terminate the current listeners and prevent future access:

In[1]:=1
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https://wolfram.com/xid/01lsmwlj2m8qe305w-2xu521
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/01lsmwlj2m8qe305w-r6j4kw
Out[2]=2
In[3]:=3
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https://wolfram.com/xid/01lsmwlj2m8qe305w-rkcwfe

Clean up the channel:

In[4]:=4
✖
https://wolfram.com/xid/01lsmwlj2m8qe305w-i65u01
Wolfram Research (2019), RemoveChannelSubscribers, Wolfram Language function, https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.
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Wolfram Research (2019), RemoveChannelSubscribers, Wolfram Language function, https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.

Text

Wolfram Research (2019), RemoveChannelSubscribers, Wolfram Language function, https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.

✖
Wolfram Research (2019), RemoveChannelSubscribers, Wolfram Language function, https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.

CMS

Wolfram Language. 2019. "RemoveChannelSubscribers." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.

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Wolfram Language. 2019. "RemoveChannelSubscribers." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html.

APA

Wolfram Language. (2019). RemoveChannelSubscribers. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html

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Wolfram Language. (2019). RemoveChannelSubscribers. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html

BibTeX

@misc{reference.wolfram_2025_removechannelsubscribers, author="Wolfram Research", title="{RemoveChannelSubscribers}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html}", note=[Accessed: 26-March-2025 ]}

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@misc{reference.wolfram_2025_removechannelsubscribers, author="Wolfram Research", title="{RemoveChannelSubscribers}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html}", note=[Accessed: 26-March-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_removechannelsubscribers, organization={Wolfram Research}, title={RemoveChannelSubscribers}, year={2019}, url={https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html}, note=[Accessed: 26-March-2025 ]}

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@online{reference.wolfram_2025_removechannelsubscribers, organization={Wolfram Research}, title={RemoveChannelSubscribers}, year={2019}, url={https://reference.wolfram.com/language/ref/RemoveChannelSubscribers.html}, note=[Accessed: 26-March-2025 ]}