### Configure and Receive Messages

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.AggregatedMessageStream.html

Examples for setting the maximum continuation size and consuming messages from the stream.

```rust
// increase the allowed size from 1MB to 8MB
let mut stream = stream.max_continuation_size(8 * 1024 * 1024);

while let Some(Ok(msg)) = stream.recv().await {
    // handle message
}
```

```rust
while let Some(Ok(msg)) = stream.recv().await {
    // handle message
}
```

--------------------------------

### WebSocket server implementation

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/fn.handle.html

A complete example demonstrating how to handle WebSocket traffic, including ping responses and message processing within an actix-web server.

```rust
use std::io;
use actix_web::{middleware::Logger, web, App, HttpRequest, HttpServer, Responder};
use actix_ws::Message;
use futures_util::StreamExt as _;

async fn ws(req: HttpRequest, body: web::Payload) -> actix_web::Result<impl Responder> {
    let (response, mut session, mut msg_stream) = actix_ws::handle(&req, body)?;

    actix_web::rt::spawn(async move {
        while let Some(Ok(msg)) = msg_stream.next().await {
            match msg {
                Message::Ping(bytes) => {
                    if session.pong(&bytes).await.is_err() {
                        return;
                    }
                }

                Message::Text(msg) => println!("Got text: {msg}"),
                _ => break,
            }
        }

        let _ = session.close(None).await;
    });

    Ok(response)
}

#[tokio::main(flavor = "current_thread")]
async fn main() -> io::Result<()> {
    HttpServer::new(move || {
        App::new()
            .route("/ws", web::get().to(ws))
            .wrap(Logger::default())
    })
    .bind(("127.0.0.1", 8080))?
    .run()
    .await
}
```

--------------------------------

### Handle WebSocket Connection in Actix Web

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/lib.rs.html

This example demonstrates how to integrate actix-ws into an Actix Web application to handle WebSocket connections. It shows setting up a route, handling incoming messages (like Pings), and sending responses. Ensure the `actix-ws` and `futures-util` crates are added to your Cargo.toml.

```rust
use std::io;
use actix_web::{middleware::Logger, web, App, HttpRequest, HttpServer, Responder};
use actix_ws::Message;
use futures_util::StreamExt as _;

async fn ws(req: HttpRequest, body: web::Payload) -> actix_web::Result<impl Responder> {
    let (response, mut session, mut msg_stream) = actix_ws::handle(&req, body)?;

    actix_web::rt::spawn(async move {
        while let Some(Ok(msg)) = msg_stream.next().await {
            match msg {
                Message::Ping(bytes) => {
                    if session.pong(&bytes).await.is_err() {
                        return;
                    }
                }

                Message::Text(msg) => println!("Got text: {msg}"),
                _ => break,
            }
        }

        let _ = session.close(None).await;
    });

    Ok(response)
}

#[tokio::main(flavor = "current_thread")]
async fn main() -> io::Result<()> {
    HttpServer::new(move || {
        App::new()
            .route("/ws", web::get().to(ws))
            .wrap(Logger::default())
    })
    .bind(("127.0.0.1", 8080))?;
    .run()
    .await
}

```

--------------------------------

### Send continuation frames

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Manually sends fragmented messages using continuation frames. Must start with First and end with Last.

```rust
session.continuation(Item::FirstText("Hello".into())).await?;
session.continuation(Item::Continue(b", World"[..].into())).await?;
session.continuation(Item::Last(b"!"[..].into())).await?;
```

--------------------------------

### Stream Implementation for StreamingBody

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.StreamingBody.html

Implements the `Stream` trait for `StreamingBody`, defining the `Item` type as `Result<Bytes, Error>` and providing methods for polling the next item and getting the stream's size hint.

```rust
type Item = Result<Bytes, Error>
```

```rust
fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>
```

```rust
fn size_hint(&self) -> (usize, Option<usize>)
```

--------------------------------

### Initiate WebSocket Handshake and Session

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/lib.rs.html

This function performs the WebSocket handshake and sets up the session and message stream. It returns the HTTP response, a `Session` object for managing the WebSocket connection, and a `MessageStream` for receiving messages. Requires `actix-http` and `tokio` dependencies.

```rust
pub fn handle(
    req: &HttpRequest,
    body: web::Payload,
) -> Result<(HttpResponse, Session, MessageStream), actix_web::Error> {
    let mut response = handshake(req.head())?;
    let (tx, rx) = channel(32);

    Ok((
        response
            .message_body(BodyStream::new(StreamingBody::new(rx)).boxed())? 
            .into(),
        Session::new(tx),
        MessageStream::new(body.into_inner()),
    ))
}

```

--------------------------------

### actix_ws::handle

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/lib.rs.html

Initializes a WebSocket connection by performing the handshake and returning the necessary components to manage the session and message stream.

```APIDOC
## handle(req: &HttpRequest, body: web::Payload)

### Description
Begins handling WebSocket traffic by performing the handshake and returning an HTTP response, a session handle, and a message stream.

### Parameters
#### Request Parameters
- **req** (&HttpRequest) - Required - The incoming HTTP request.
- **body** (web::Payload) - Required - The request body payload.

### Response
#### Success Response (200)
- **HttpResponse** - The WebSocket handshake response.
- **Session** - Handle for sending messages to the client.
- **MessageStream** - Stream for receiving messages from the client.
```

--------------------------------

### Create a new WebSocket session handle

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Internal constructor for the `Session` struct. It initializes the session with a sender for messages and an atomic boolean to track its closed state.

```rust
pub(super) fn new(inner: Sender<Message>) -> Self {
        Session {
            inner: Some(inner),
            closed: Arc::new(AtomicBool::new(false)),
        }
    }
```

--------------------------------

### Structs in actix-ws 0.3.0

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/all.html

Overview of the structs available in the actix-ws 0.3.0 crate.

```APIDOC
## Structs

### AggregatedMessageStream

Represents an aggregated stream of messages.

### CloseReason

Details about the reason for closing a connection.

### Closed

Indicates that a connection has been closed.

### MessageStream

Represents a stream of WebSocket messages.

### Session

Represents an active WebSocket session.

### StreamingBody

Represents a streaming body for messages.
```

--------------------------------

### Implement Any for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Provides runtime type information for any type T.

```rust
fn type_id(&self) -> TypeId
```

--------------------------------

### WithSubscriber Implementation

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.ProtocolError.html

Implementations for attaching subscribers to types.

```APIDOC
## impl<T> WithSubscriber for T

### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>

where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
```

--------------------------------

### Implement From<T> for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Provides a conversion from T to T, returning the argument unchanged.

```rust
fn from(t: T) -> T
```

--------------------------------

### Functions in actix-ws 0.3.0

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/all.html

Overview of the functions available in the actix-ws 0.3.0 crate.

```APIDOC
## Functions

### handle

Handles incoming WebSocket connections and messages. This function is typically used within an Actix web service to manage WebSocket interactions.
```

--------------------------------

### Implement PartialEq for Item

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Enables comparison of two Item instances for equality.

```rust
fn eq(&self, other: &Item) -> bool
```

```rust
fn ne(&self, other: &Rhs) -> bool
```

--------------------------------

### TryInto Conversion Method

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Performs the conversion into the target type.

```rust
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
```

--------------------------------

### VZip Implementation

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.ProtocolError.html

Implementation of VZip for types V that implement MultiLane<T>.

```APIDOC
## impl<V, T> VZip<V> for T

where V: MultiLane<T>,

### fn vzip(self) -> V
```

--------------------------------

### Implement Into<U> for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Provides a conversion from T to U, leveraging the From<T> for U implementation.

```rust
fn into(self) -> U
```

--------------------------------

### Send Continuation Message with Actix-ws Session

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Use the `continuation` method to send a continuation message as part of a larger message. Ensure the session is still open before calling.

```rust
pub async fn continuation(&mut self, msg: Item) -> Result<(), Closed> {
        self.pre_check();
        if let Some(inner) = self.inner.as_mut() {
            inner
                .send(Message::Continuation(msg))
                .await
                .map_err(|_| Closed)
        } else {
            Err(Closed)
        }
    }
```

--------------------------------

### actix_ws::handle

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/fn.handle.html

The handle function initiates the WebSocket handshake and returns the necessary components to manage the connection.

```APIDOC
## Function actix_ws::handle

### Description
Begins handling WebSocket traffic by performing the handshake and returning the response, session, and message stream.

### Parameters
- **req** (&HttpRequest) - Required - The incoming HTTP request to upgrade.
- **body** (Payload) - Required - The request payload.

### Response
- **Result<(HttpResponse, Session, MessageStream), Error>** - Returns a tuple containing the handshake response, the session controller, and the stream of incoming messages on success, or an Error if the handshake fails.
```

--------------------------------

### Stream Conversion and Iteration

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Utilities for converting streams and iterating over their elements.

```APIDOC
## fn into_stream(self) -> IntoStream<Self>

### Description
Wraps a `TryStream` into a type that implements `Stream`.

### Method
(Implicitly part of stream processing, no explicit HTTP method)

### Endpoint
(N/A - This is a function within a stream processing library)

### Parameters
(N/A)

### Request Example
(N/A)

### Response
#### Success Response (200)
(N/A - Returns a converted stream)

#### Response Example
(N/A)
```

```APIDOC
## fn try_next(&mut self) -> TryNext<'_, Self>

### Description
Creates a future that attempts to resolve the next item in the stream. If an error is encountered before the next item, the error is returned instead.

### Method
(Implicitly part of stream processing, no explicit HTTP method)

### Endpoint
(N/A - This is a function within a stream processing library)

### Parameters
#### Path Parameters
(N/A)

#### Query Parameters
(N/A)

#### Request Body
(N/A)

### Request Example
(N/A)

### Response
#### Success Response (200)
(N/A - Returns a future)

#### Response Example
(N/A)
```

```APIDOC
## fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>

### Description
Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream.

### Method
(Implicitly part of stream processing, no explicit HTTP method)

### Endpoint
(N/A - This is a function within a stream processing library)

### Parameters
(N/A)

### Request Example
(N/A)

### Response
#### Success Response (200)
(N/A - Returns a future)

#### Response Example
(N/A)
```

--------------------------------

### handle function

Source: https://docs.rs/actix-ws/0.3.0/actix_ws

The primary entry point for initiating WebSocket traffic handling within an Actix Web application.

```APIDOC
## handle

### Description
Begin handling websocket traffic for an incoming request.

### Function Signature
`pub fn handle(req: &HttpRequest, stream: Payload) -> Result<(HttpRequest, Payload, Session), ProtocolError>`

### Parameters
- **req** (&HttpRequest) - The incoming HTTP request.
- **stream** (Payload) - The request payload stream.

### Returns
- **Result** - Returns a tuple containing the request, payload, and a Session handle, or a ProtocolError if the handshake fails.
```

--------------------------------

### continuation

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Sends a continuation frame to the WebSocket client.

```APIDOC
## continuation

### Description
Sends a continuation frame to the WebSocket client. This is used for fragmented messages.

### Parameters
- **msg** (Item) - Required - The continuation item to send.

### Response
- **Result<(), Closed>** - Returns Ok(()) on success, or Closed if the session is no longer active.
```

--------------------------------

### Implement TryInto<U> for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Enables fallible conversion from T to U, using the TryFrom<T> for U implementation.

```rust
type Error = <U as TryFrom<T>>::Error
```

```rust
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
```

--------------------------------

### Configure Maximum Continuation Size

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/aggregated.rs.html

Sets the maximum allowed size for aggregated continuations in bytes. The default limit is 1 MiB.

```rust
# use actix_ws::AggregatedMessageStream;
# async fn test(stream: AggregatedMessageStream) {
// increase the allowed size from 1MB to 8MB
let mut stream = stream.max_continuation_size(8 * 1024 * 1024);

while let Some(Ok(msg)) = stream.recv().await {
    // handle message
}
# }
```

--------------------------------

### Stream Adaptors

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for transforming and managing streams, such as buffering, chunking, and zipping.

```APIDOC
## Stream Adaptors

### Description
Methods to manipulate, buffer, and combine streams.

### Methods
- **fuse()**: Fuses a stream so poll_next is not called after completion.
- **buffered(n: usize)**: Creates a buffered list of pending futures.
- **buffer_unordered(n: usize)**: Creates a buffered list of pending futures (unordered).
- **zip(other)**: Zips two streams together.
- **chain(other)**: Chains two streams.
- **chunks(capacity: usize)**: Chunks items into a vector.
- **ready_chunks(capacity: usize)**: Chunks ready items into a vector.
```

--------------------------------

### Stream Adaptors

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.StreamingBody.html

Methods for transforming and inspecting streams.

```APIDOC
## Stream Adaptors

### Description
Methods to transform, chunk, or inspect items within a stream.

### Methods
- **peekable()**: Creates a new stream which exposes a peek method.
- **chunks(capacity: usize)**: Adaptor for chunking items into a vector.
- **ready_chunks(capacity: usize)**: Adaptor for chunking ready items into a vector.
- **inspect<F>(f: F)**: Executes a closure on each item while passing it through.
- **left_stream<B>()**: Wraps stream as the left variant of an Either stream.
- **right_stream<B>()**: Wraps stream as the right variant of an Either stream.
```

--------------------------------

### MessageStream Configuration and Usage

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for configuring the MessageStream behavior and receiving messages.

```APIDOC
## MessageStream::max_frame_size

### Description
Sets the maximum permitted size for received WebSocket frames, in bytes. By default, up to 64KiB is allowed. Any received frames larger than the permitted value will return `Err(ProtocolError::Overflow)`.

### Parameters
- **max_size** (usize) - Required - The maximum frame size in bytes.

### Request Example
```rust
// increase permitted frame size from 64KB to 1MB
let stream = stream.max_frame_size(1024 * 1024);
```

## MessageStream::aggregate_continuations

### Description
Returns a stream wrapper that collects continuation frames into their equivalent aggregated forms (binary or text).

## MessageStream::recv

### Description
Waits for the next item from the message stream. This is a convenience method for calling the `Stream` implementation.

### Response
- **Option<Result<Message, ProtocolError>>** - The next message from the stream or None if exhausted.

### Response Example
```rust
while let Some(Ok(msg)) = stream.recv().await {
    // handle message
}
```
```

--------------------------------

### Send pong frame

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Responds to a ping frame with a pong frame.

```rust
match msg {
    Message::Ping(bytes) => {
        let _ = session.pong(&bytes).await;
    }
    _ => (),
}
```

--------------------------------

### Send continuation frame for WebSocket messages

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Manually sends a continuation frame for a multi-frame WebSocket message. Use `Item::FirstText`, `Item::ContinueText`, `Item::LastText` for text messages, and similarly for binary. Ensure frames are sent in the correct sequence (First, Continue..., Last). Control messages can interrupt continuations.

```rust
session.continuation(Item::FirstText("Hello".into())).await?;
```

--------------------------------

### Implement Debug for Item

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Provides a way to format the Item enum for debugging purposes.

```rust
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
```

--------------------------------

### Convenience method for TryStream::try_poll_next on Unpin streams

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

This method is a convenience wrapper for calling `TryStream::try_poll_next` specifically on stream types that implement `Unpin`. It simplifies polling for results from such streams.

```rust
fn try_poll_next_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Option<Result<Self::Ok, Self::Error>>>
where Self: Unpin,
```

--------------------------------

### Implement WithSubscriber for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Allows attaching a Subscriber to a type, returning a WithDispatch wrapper.

```rust
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>
```

```rust
fn with_current_subscriber(self) -> WithDispatch<Self>
```

--------------------------------

### Enums in actix-ws 0.3.0

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/all.html

Overview of the enums available in the actix-ws 0.3.0 crate.

```APIDOC
## Enums

### AggregatedMessage

An enum representing different types of aggregated WebSocket messages.

### CloseCode

Enumerates the possible close codes for WebSocket connections.

### Item

Represents an item within a message stream.

### Message

Represents a WebSocket message, which can be text, binary, ping, pong, or close.

### ProtocolError

Enumerates possible protocol errors that can occur during WebSocket communication.
```

--------------------------------

### Define Session struct

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

The internal structure definition for the WebSocket session handle.

```rust
pub struct Session { /* private fields */ }
```

--------------------------------

### WebSocket Session Methods

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Methods available on the Session handle to communicate with the WebSocket client.

```APIDOC
## Session Methods

### Description
Methods to send various types of WebSocket frames to the client.

### Methods
- **text(msg: impl Into<ByteString>)**: Sends a text message.
- **binary(msg: impl Into<Bytes>)**: Sends raw binary data.
- **ping(msg: &[u8])**: Sends a ping frame to check connection status.
- **pong(msg: &[u8])**: Sends a pong frame in response to a ping.
- **continuation(item: Item)**: Sends continuation frames for fragmented messages.

### Parameters
- **msg** (String/Bytes/Slice) - Required - The payload to send.
- **item** (Item) - Required - The continuation frame variant (FirstText, FirstBinary, Continue, Last).

### Response
- **Result<(), Closed>** - Returns Ok(()) on success, or a Closed error if the session is no longer active.
```

--------------------------------

### Implement VZip for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Provides vector zipping functionality for type T with a MultiLane V.

```rust
fn vzip(self) -> V
```

--------------------------------

### Close Session with Actix-ws Session

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/session.rs.html

Call the `close` method to send a close message and terminate the session. Any subsequent use of the session or its clones will result in an error.

```rust
pub async fn close(mut self, reason: Option<CloseReason>) -> Result<(), Closed> {
        self.pre_check();

        if let Some(inner) = self.inner.take() {
            self.closed.store(true, Ordering::Relaxed);
            inner.send(Message::Close(reason)).await.map_err(|_| Closed)
        } else {
            Err(Closed)
        }
    }
```

--------------------------------

### MessageStream Configuration and Reception

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/stream.rs.html

Methods for configuring the MessageStream behavior and receiving messages from a WebSocket connection.

```APIDOC
## MessageStream Configuration

### Description
Configures the MessageStream instance to handle frame sizes and message aggregation.

### Methods
- **max_frame_size(max_size: usize)**: Sets the maximum permitted size for received WebSocket frames in bytes. Defaults to 64KiB.
- **aggregate_continuations()**: Returns an AggregatedMessageStream that collects continuation frames into binary or text messages.
- **recv()**: Asynchronously waits for the next item from the message stream.

### Parameters
- **max_size** (usize) - Required - The maximum frame size in bytes.

### Usage Example
```rust
// Increase permitted frame size to 1MB
let stream = stream.max_frame_size(1024 * 1024);

// Receive messages in a loop
while let Some(Ok(msg)) = stream.recv().await {
    // handle message
}
```
```

--------------------------------

### Implement Borrow for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Allows borrowing a reference to T from T.

```rust
fn borrow(&self) -> &T
```

--------------------------------

### Stream Adapters

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.AggregatedMessageStream.html

Various adapters to modify or enhance stream behavior.

```APIDOC
## Stream Adapters

### `boxed_local`

#### Description
Wraps the stream in a Box, pinning it.

### `buffered`

#### Description
An adaptor for creating a buffered list of pending futures.

### `buffer_unordered`

#### Description
An adaptor for creating a buffered list of pending futures (unordered).

### `zip`

#### Description
An adapter for zipping two streams together.

### `chain`

#### Description
Adapter for chaining two streams.

### `peekable`

#### Description
Creates a new stream which exposes a `peek` method.

### `chunks`

#### Description
An adaptor for chunking up items of the stream inside a vector.

### `ready_chunks`

#### Description
An adaptor for chunking up ready items of the stream inside a vector.

### `inspect`

#### Description
Do something with each item of this stream, afterwards passing it on.

### `left_stream`

#### Description
Wrap this stream in an `Either` stream, making it the left-hand variant of that `Either`.

### `right_stream`

#### Description
Wrap this stream in an `Either` stream, making it the right-hand variant of that `Either`.
```

--------------------------------

### Set Maximum WebSocket Frame Size

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/stream.rs.html

Configures the maximum permitted size for received WebSocket frames. Defaults to 64KiB. Any frames exceeding this size will result in an error.

```rust
use actix_ws::MessageStream;

# fn test(stream: MessageStream) {
// increase permitted frame size from 64KB to 1MB
let stream = stream.max_frame_size(1024 * 1024);
# }

```

--------------------------------

### WebSocket handle function signature

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/fn.handle.html

The primary function signature for initiating a WebSocket session from an HTTP request.

```rust
pub fn handle(
    req: &HttpRequest,
    body: Payload,
) -> Result<(HttpResponse, Session, MessageStream), Error>
```

--------------------------------

### Stream Trait Implementations

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.AggregatedMessageStream.html

Implementations and extensions for the Stream and TryStream traits.

```APIDOC
## Stream and TryStream Implementations

### `TryFrom<U> for T`

#### Description
Implementation for converting between types using `TryFrom`.

### `TryInto<U> for T`

#### Description
Implementation for converting between types using `TryInto`.

### `TryStream` Trait

#### Description
Trait for streams that yield `Result` items.

#### Methods
- `try_poll_next`: Poll this `TryStream` as if it were a `Stream`.

### `TryStreamExt` Trait

#### Description
Extension trait for `TryStream` providing additional utility methods.

#### Methods
- `err_into`: Wraps the current stream in a new stream which converts the error type into the one provided.
- `map_ok`: Wraps the current stream in a new stream which maps the success value using the provided closure.
- `map_err`: Wraps the current stream in a new stream which maps the error value using the provided closure.
- `and_then`: Chain on a computation for when a value is ready, passing the successful results to the provided closure `f`.
- `or_else`: Chain on a computation for when an error happens, passing the erroneous result to the provided closure `f`.
- `inspect_ok`: Do something with the success value of this stream, afterwards passing it on.
- `inspect_err`: Do something with the error value of this stream, afterwards passing it on.
- `into_stream`: Wraps a `TryStream` into a type that implements `Stream`.
```

--------------------------------

### Stream Transformation and Combination

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for transforming stream items, combining streams, and handling asynchronous operations within streams.

```APIDOC
## Stream Extension Methods

This section details various extension methods available for streams, enabling advanced stream manipulation and asynchronous processing.

### `then<Fut, F>(self, f: F) -> Then<Self, Fut, F>`

**Description**: Computes new items of a different type from this stream's items using an asynchronous closure.

**Method**: `then`

**Endpoint**: N/A (Method on Stream)

### `collect<C>(self) -> Collect<Self, C>`

**Description**: Transforms a stream into a collection, returning a future that represents the result of that computation.

**Method**: `collect`

**Endpoint**: N/A (Method on Stream)

### `unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>`

**Description**: Converts a stream of pairs into a future, which resolves to a pair of containers.

**Method**: `unzip`

**Endpoint**: N/A (Method on Stream)

### `concat(self) -> Concat<Self>`

**Description**: Concatenates all items of a stream into a single extendable destination, returning a future that represents the end result.

**Method**: `concat`

**Endpoint**: N/A (Method on Stream)

### `cycle(self) -> Cycle<Self>`

**Description**: Repeats a stream endlessly.

**Method**: `cycle`

**Endpoint**: N/A (Method on Stream)

### `flatten(self) -> Flatten<Self>`

**Description**: Flattens a stream of streams into a single continuous stream.

**Method**: `flatten`

**Endpoint**: N/A (Method on Stream)

### `flatten_unordered(self, limit: impl Into<Option<usize>>) -> FlattenUnorderedWithFlowController<Self, ()>`

**Description**: Flattens a stream of streams into a single continuous stream. Polls inner streams produced by the base stream concurrently.

**Method**: `flatten_unordered`

**Endpoint**: N/A (Method on Stream)

### `flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>`

**Description**: Maps a stream like `StreamExt::map` but flattens nested `Stream`s.

**Method**: `flat_map`

**Endpoint**: N/A (Method on Stream)

### `flat_map_unordered<U, F>(self, limit: impl Into<Option<usize>>, f: F) -> FlatMapUnordered<Self, U, F>`

**Description**: Maps a stream like `StreamExt::map` but flattens nested `Stream`s and polls them concurrently, yielding items in any order, as they become available.

**Method**: `flat_map_unordered`

**Endpoint**: N/A (Method on Stream)

### `scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>`

**Description**: A combinator similar to `StreamExt::fold` that holds internal state and produces a new stream.

**Method**: `scan`

**Endpoint**: N/A (Method on Stream)

### `skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>`

**Description**: Skips elements on this stream while the provided asynchronous predicate resolves to `true`.

**Method**: `skip_while`

**Endpoint**: N/A (Method on Stream)

### `take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>`

**Description**: Takes elements from this stream while the provided asynchronous predicate resolves to `true`.

**Method**: `take_while`

**Endpoint**: N/A (Method on Stream)

### `take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>`

**Description**: Takes elements from this stream until the provided future resolves.

**Method**: `take_until`

**Endpoint**: N/A (Method on Stream)

### `take<T>(self, n: usize) -> Take<Self>`

**Description**: Creates a new stream of at most `n` items of the underlying stream.

**Method**: `take`

**Endpoint**: N/A (Method on Stream)

### `skip<T>(self, n: usize) -> Skip<Self>`

**Description**: Creates a new stream which skips `n` items of the underlying stream.

**Method**: `skip`

**Endpoint**: N/A (Method on Stream)

```

--------------------------------

### Aggregate WebSocket Continuation Frames

Source: https://docs.rs/actix-ws/0.3.0/src/actix_ws/stream.rs.html

Wraps a MessageStream to collect continuation frames into aggregated binary or text messages. By default, continuations are aggregated up to 1MiB.

```rust
use actix_ws::MessageStream;
use actix_ws::AggregatedMessageStream;

# fn test(stream: MessageStream) {
let aggregated_stream = stream.aggregate_continuations();
# }

```

--------------------------------

### WebSocket Session Methods

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Methods available on the Session struct to manage WebSocket communication.

```APIDOC
## text

### Description
Sends text into the WebSocket.

### Parameters
- **msg** (impl Into<ByteString>) - Required - The text message to send.

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is closed.

## binary

### Description
Sends raw bytes into the WebSocket.

### Parameters
- **msg** (impl Into<Bytes>) - Required - The binary data to send.

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is closed.

## ping

### Description
Pings the client to keep the connection alive.

### Parameters
- **msg** (&[u8]) - Required - The ping payload.

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is closed.

## pong

### Description
Pongs the client in response to a ping.

### Parameters
- **msg** (&[u8]) - Required - The pong payload.

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is closed.

## continuation

### Description
Manually controls sending continuations for fragmented messages.

### Parameters
- **msg** (Item) - Required - The continuation item (First, Continue, or Last).

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is closed.

## close

### Description
Sends a close message and consumes the session.

### Parameters
- **reason** (Option<CloseReason>) - Optional - The reason for closing the connection.

### Response
- **Result<(), Closed>** - Returns Ok if successful, or Err(Closed) if the session is already closed.
```

--------------------------------

### Configure Maximum Frame Size

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Sets the maximum permitted size for received WebSocket frames in bytes. Exceeding this limit results in a ProtocolError::Overflow.

```rust
// increase permitted frame size from 64KB to 1MB
let stream = stream.max_frame_size(1024 * 1024);
```

--------------------------------

### Implement Instrument for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Enables instrumenting a type with a Span for tracing.

```rust
fn instrument(self, span: Span) -> Instrumented<Self>
```

```rust
fn in_current_span(self) -> Instrumented<Self>
```

--------------------------------

### Stream Aggregation and Predicates

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for aggregating stream data, counting elements, and applying predicates.

```APIDOC
### `count(self) -> Count<Self>`

**Description**: Drives the stream to completion, counting the number of items.

**Method**: `count`

**Endpoint**: N/A (Method on Stream)

### `fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>`

**Description**: Executes an accumulating asynchronous computation over a stream, collecting all the values into one final result.

**Method**: `fold`

**Endpoint**: N/A (Method on Stream)

### `any<Fut, F>(self, f: F) -> Any<Self, Fut, F>`

**Description**: Executes a predicate over an asynchronous stream and returns `true` if any element in the stream satisfied the predicate.

**Method**: `any`

**Endpoint**: N/A (Method on Stream)

### `all<Fut, F>(self, f: F) -> All<Self, Fut, F>`

**Description**: Executes a predicate over an asynchronous stream and returns `true` if all elements in the stream satisfied the predicate.

**Method**: `all`

**Endpoint**: N/A (Method on Stream)

### `for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>`

**Description**: Runs this stream to completion, executing the provided asynchronous closure for each element on the stream.

**Method**: `for_each`

**Endpoint**: N/A (Method on Stream)

### `for_each_concurrent<Fut, F>(self, limit: impl Into<Option<usize>>, f: F) -> ForEachConcurrent<Self, Fut, F>`

**Description**: Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available.

**Method**: `for_each_concurrent`

**Endpoint**: N/A (Method on Stream)

```

--------------------------------

### Implement Same for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Defines the output type for the Same trait, which should always be Self.

```rust
type Output = T
```

--------------------------------

### Attach current default subscriber to type

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Attaches the currently configured default `Subscriber` to the type, returning a `WithDispatch` wrapper. This is a convenient method for applying the global subscriber.

```rust
fn with_current_subscriber(self) -> WithDispatch<Self>
```

--------------------------------

### Implement TryFrom<U> for T

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Enables fallible conversion from U to T, with an Infallible error type.

```rust
type Error = Infallible
```

```rust
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
```

--------------------------------

### Close session

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Sends a close message and consumes the session instance.

```rust
session.close(None).await
```

--------------------------------

### TryStream Extensions

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for handling streams that yield Result types, allowing for error mapping and chaining.

```APIDOC
## TryStream Extensions

### Description
Extensions for streams yielding Result<T, E> to facilitate error handling and transformation.

### Methods
- **err_into<E>()**: Converts the error type into the provided type E.
- **map_ok<T, F>(f)**: Maps the success value using closure f.
- **map_err<E, F>(f)**: Maps the error value using closure f.
- **and_then<Fut, F>(f)**: Chains a computation for successful results.
- **or_else<Fut, F>(f)**: Chains a computation for error results.
```

--------------------------------

### Attach subscriber to type

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Attaches a provided `Subscriber` to the current type, returning a `WithDispatch` wrapper. The subscriber must be convertible into a `Dispatch` type.

```rust
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,
```

--------------------------------

### Type Conversion Error Handling

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Details the error type returned during conversion attempts.

```APIDOC
## Type Conversion Error

### Description
The type returned in the event of a conversion error.

### Type Alias
`Error = <U as TryFrom<T>>::Error`

### Method
`try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`

Performs the conversion. Returns a `Result` which is either the converted value or the conversion error.
```

--------------------------------

### Execute predicate over stream, check if all items satisfy

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Attempts to execute a predicate function on each item of an asynchronous stream. It returns `true` if all items satisfy the predicate, and `false` otherwise. The operation exits early if an error is encountered or if an item does not satisfy the predicate.

```rust
fn try_all<Fut, F>(self, f: F) -> TryAll<Self, Fut, F>
where Self: Sized,
F: FnMut(Self::Ok) -> Fut,
Fut: Future<Output = bool>,
```

--------------------------------

### Instrument Trait Methods

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.CloseCode.html

Methods for instrumenting types with spans for tracing.

```APIDOC
## Instrument Trait

### Description
Instruments a type with a Span or the current Span.

### Methods
- **instrument(self, span: Span) -> Instrumented<Self>**
- **in_current_span(self) -> Instrumented<Self>**
```

--------------------------------

### WithSubscriber Trait Methods

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.CloseCode.html

Methods for attaching subscribers to types.

```APIDOC
## WithSubscriber Trait

### Description
Attaches a subscriber to a type for dispatching.

### Methods
- **with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>**
- **with_current_subscriber(self) -> WithDispatch<Self>**
```

--------------------------------

### Stream Utility Methods

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Methods for polling and evaluating predicates over asynchronous streams.

```APIDOC
## fn try_poll_next_unpin

### Description
A convenience method for calling `TryStream::try_poll_next` on `Unpin` stream types.

## fn try_all

### Description
Attempt to execute a predicate over an asynchronous stream and evaluate if all items satisfy the predicate. Exits early if an `Err` is encountered or if an `Ok` item is found that does not satisfy the predicate.

## fn try_any

### Description
Attempt to execute a predicate over an asynchronous stream and evaluate if any items satisfy the predicate. Exits early if an `Err` is encountered or if an `Ok` item is found that satisfies the predicate.
```

--------------------------------

### Stream Filtering and Predicates

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.AggregatedMessageStream.html

Methods for evaluating stream elements against asynchronous predicates.

```APIDOC
## any

### Description
Execute predicate over asynchronous stream, and return true if any element in stream satisfied a predicate.

## all

### Description
Execute predicate over asynchronous stream, and return true if all element in stream satisfied a predicate.

## skip_while

### Description
Skip elements on this stream while the provided asynchronous predicate resolves to true.

## take_while

### Description
Take elements from this stream while the provided asynchronous predicate resolves to true.
```

--------------------------------

### Send binary message

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Sends raw bytes through the WebSocket session.

```rust
if session.binary(&b"some bytes"[..]).await.is_err() {
    // session closed
}
```

--------------------------------

### Send ping frame

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Sends a ping frame to the client to verify connection status.

```rust
if session.ping(b"").await.is_err() {
    // session is closed
}
```

--------------------------------

### TryStream Extensions

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.StreamingBody.html

Extensions for streams that yield Result types, allowing for error handling and chaining.

```APIDOC
## TryStream Extensions

### Description
Utilities for processing streams that yield Result<T, E>, including mapping, chaining, and error handling.

### Methods
- **err_into<E>()**: Converts the error type into the provided type E.
- **map_ok<T, F>(f: F)**: Maps the success value using the provided closure.
- **map_err<E, F>(f: F)**: Maps the error value using the provided closure.
- **and_then<Fut, F>(f: F)**: Chains a computation for successful results.
- **or_else<Fut, F>(f: F)**: Chains a computation for error results.
- **inspect_ok<F>(f: F)**: Inspects success values.
- **inspect_err<F>(f: F)**: Inspects error values.
- **try_next()**: Future that resolves the next item or returns an error.
- **try_for_each<Fut, F>(f: F)**: Runs the stream to completion with an async closure.
```

--------------------------------

### Execute predicate over stream, check if any item satisfies

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.MessageStream.html

Attempts to execute a predicate function on each item of an asynchronous stream. It returns `true` if at least one item satisfies the predicate, and `false` otherwise. The operation exits early if an error is encountered or if an item satisfies the predicate.

```rust
fn try_any<Fut, F>(self, f: F) -> TryAny<Self, Fut, F>
where Self: Sized,
F: FnMut(Self::Ok) -> Fut,
Fut: Future<Output = bool>,
```

--------------------------------

### Item Enum Trait Implementations

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/enum.Item.html

Details the trait implementations for the Item enum, including Debug, PartialEq, and Eq.

```APIDOC
## Item Enum Trait Implementations

### Debug
Provides a way to format the Item enum for debugging purposes.

### PartialEq
Allows comparison of two Item instances for equality.

### Eq
Indicates that equality is an equivalence relation for the Item enum.
```

--------------------------------

### VZip Trait Implementation

Source: https://docs.rs/actix-ws/0.3.0/actix_ws/struct.Session.html

Implementation of the VZip trait for multi-lane types.

```rust
impl<V, T> VZip<V> for T
where V: MultiLane<T>,
```

```rust
fn vzip(self) -> V
```