Phenyx Pro 8 Channel

[Armanda Kicks]

Lets say all connected users receive updates regarding modifications to every post - there is no reason to have post based topics. All the updates can be broadcasted to say common post_updates channel/topic. At the minimum you will have 1 socket and 1 channel for pushing updates to a user.

The PTU-5000 is a 4-channel professional wireless microphone system that aims to provide users with the simplicity and the professional sound quality that they long for. Made of durable metal material, the PTU-5000 is one of the most beloved systems for small to large venues, weddings, singing, and other applications.

Every time you join a channel, you need to choose which particular topic youwant to listen to. The topic is just an identifier, but by convention it isoften made of two parts: "topic:subtopic". Using the "topic:subtopic"approach pairs nicely with the Phoenix.Socket.channel/3 allowing you tomatch on all topics starting with a given prefix by using a splat (the *character) as the last character in the topic pattern:

Any topic coming into the router with the "room:" prefix would dispatchto MyAppWeb.RoomChannel in the above example. Topics can also be patternmatched in your channels' join/3 callback to pluck out the scoped pattern:

Clients must join a channel to send and receive PubSub events on that channel.Your channels must implement a join/3 callback that authorizes the socketfor the given topic. For example, you could check if the user is allowed tojoin that particular room.

After a client has successfully joined a channel, incoming events from theclient are routed through the channel's handle_in/3 callbacks. Within thesecallbacks, you can perform any action. Incoming callbacks must return thesocket to maintain ephemeral state.

Replies are useful for acknowledging a client's message or responding withthe results of an operation. A reply is sent only to the client connected tothe current channel process. Behind the scenes, they include the clientmessage ref, which allows the client to correlate the reply it receiveswith the message it sent.

Calling push/3 allows you to send a message to the client which is not areply to a specific client message. Because it is not a reply, a pushedmessage does not contain a client message ref; there is no prior clientmessage to relate it to.

When an event is broadcasted with broadcast/3, each channel subscriber canchoose to intercept the event and have their handle_out/3 callback triggered.This allows the event's payload to be customized on a socket by socket basisto append extra information, or conditionally filter the message from beingdelivered. If the event is not intercepted with Phoenix.Channel.intercept/1,then the message is pushed directly to the client:

In some cases, you will want to broadcast messages without the context ofa socket. This could be for broadcasting from within your channel to anexternal topic, or broadcasting from elsewhere in your application like acontroller or another process. Such can be done via your endpoint:

terminate/2, however, won't be invoked in case of errors nor incase of exits. This is the same behaviour as you find in Elixirabstractions like GenServer and others. Similar to GenServer,it would also be possible to :trap_exit to guarantee that terminate/2is invoked. This practice is not encouraged though.

Generally speaking, if you want to clean something up, it is better tomonitor your channel process and do the clean up from another process.All channel callbacks, including join/3, are called from within thechannel process. Therefore, self() in any of them returns the PID tobe monitored.

Sometimes you may need to programmatically subscribe a socket to externaltopics in addition to the internal socket.topic. For example,imagine you have a bidding system where a remote client dynamically setspreferences on products they want to receive bidding notifications on.Instead of requiring a unique channel process and topic perpreference, a more efficient and simple approach would be to subscribe asingle channel to relevant notifications via your endpoint. For example:

Note: the caller must be responsible for preventing duplicate subscriptions.After calling subscribe/1 from your endpoint, the same flow applies tohandling regular Elixir messages within your channel. Most often, you'llsimply relay the %Phoenix.Socket.Broadcast event and payload:

By default, channel "join" and "handle_in" events are logged, usingthe level :info and :debug, respectively. You can change the level usedfor each event, or disable logs, per event type by setting the :log_joinand :log_handle_in options when using Phoenix.Channel. For example, thefollowing configuration logs join events as :info, but disables logging forincoming events:

By default, broadcasted events are pushed directly to the client, butintercepting events gives your channel a chance to customize the eventfor the client to append extra information or filter the message from beingdelivered.

Note: intercepting events can introduce significantly more overhead if alarge number of subscribers must customize a message since the broadcast willbe encoded N times instead of a single shared encoding across all subscribers.

Note that unlike some in client libraries, this server-side push/3 does notreturn a reference. If you need to get a reply from the client and tocorrelate that reply with the message you pushed, you'll need to include aunique identifier in the message, track it in the Channel's state, have theclient include it in its reply, and examine the ref when the reply comes tohandle_in/3.

But sometimes you need to reply to a push asynchronously - that is, afteryour handle_in/3 callback completes. For example, you might need to performwork in another process and reply when it's finished.

Note: A socket_ref is required so the socket itself is not leakedoutside the channel. The socket holds information such as assigns andtransport configuration, so it's important to not copy this informationoutside of the channel that owns it.

Technically, reply/2 will allow you to reply multiple times to the sameclient message, and each reply will include the client message ref. But theclient may expect only one reply; in that case, push/3 would be preferablefor the additional messages.

Phoenix Television is a majority state-owned television network that offers Mandarin and Cantonese-language channels that serve mainland China, Hong Kong, Macau and other markets with substantial Chinese-language viewers. It is headquartered in Shenzhen and Hong Kong. It is also registered in Cayman Islands.[2]

The founder of Phoenix TV, Liu Changle (劉長樂), was an officer and political instructor in the People's Liberation Army in its 40th Group Army.[3] He later became a journalist for the Chinese Communist Party (CCP)-controlled China National Radio after the Cultural Revolution and remains well-connected to the CCP's leadership.[4] Liu is a standing member of the National Committee of the Chinese People's Political Consultative Conference.[5]

Phoenix Television calls itself a Hong Kong media outlet[6] but holds a non-domestic television programme services license in Hong Kong.[7] Most of the company's customers and non-current assets come from mainland China.[8] Bauhinia Culture, a company wholly owned by the Chinese government, is its largest shareholder. Freedom House describes Phoenix Television as pro-Beijing.[9] Stephen McDonell of BBC News described the outlet as "sometimes more liberal than its mainland counterparts".[10]

The company's head offices are located in Shenzhen, Guangdong and Tai Po, Hong Kong and it also has correspondent offices in Beijing and Shanghai. The Shenzhen office is said to produce half its TV output.[11]

Phoenix Chinese Channel was launched on 31 March 1996. It replaced Star Chinese Channel in Hong Kong and mainland China.[citation needed] Broadcasts in Singapore started on 1 December 1996 via the Singapore Cable Vision network; in its early years, the Phoenix Chinese Channel also carried Mandarin-dubbed American series during primetime hours, such as The X-Files and Baywatch.[13]

The Phoenix CNE channel broadcasts in Europe, while the Phoenix North America Chinese Channel goes out in the Americas. In 2005, a California-based broadcast and engineering director for the channel, Tai Wang Mak, was arrested for conspiring with his brother, Chi Mak, to act as an intelligence agent for China.[14] A 10-year prison sentence was announced in 2008.[15][16]

In 2011, Phoenix New Media formed a partnership with the BBC to offer the British broadcaster's programming on Phoenix's digital media platforms. This was followed by a similar partnership with the National Film Board of Canada in 2012, under which 130 NFB animated shorts and documentary films would be offered digitally in China.[19]

In February 2016, Phoenix Television broadcast forced confessions of kidnapped Hong Kong booksellers.[23][24][9]In June 2020, the FCC ordered XEWW-AM, owned by Phoenix Television, to cease broadcasting.[25]

The original News Corporation's (and subsequently 21st Century Fox's) shares in Phoenix Television held through Star were gradually reduced over the years. Finally, 21st Century Fox sold its shares to TPG Capital in October 2013.[28][20][21][22]

Liu Changle (劉長樂), CEO and founder of Phoenix TV, was a journalist for the Chinese Communist Party-controlled China National Radio after the Cultural Revolution and had become one of China's richest men by the 1990s, being well-connected to the Beijing leadership.[3][4]

Former director of Phoenix TV news Chung Pong testified under oath that Phoenix TV news' programing was "subject to the dictates of the leadership of the Central Communist Propaganda Department, Central Communist Overseas Propaganda Office, and the Ministry of Foreign Affairs."[32]

Right around the time I stopped working on the project, I started hearing more and more about Elm. I began working through some simple tutorials, building out little widgets with it, and reading all I could about Elm. Since I had just immersed myself in Elixir, I had a newfound appreciation for functional languages and the functional mindset. But as I read more about Elm, I found other exciting aspects of the language:

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