Struct tokio_util::codec::AnyDelimiterCodec[][src]

pub struct AnyDelimiterCodec { /* fields omitted */ }
Expand description

A simple Decoder and Encoder implementation that splits up data into chunks based on any character in the given delimiter string.

Example

Decode string of bytes containing various different delimiters.

use tokio_util::codec::{AnyDelimiterCodec, Decoder};
use bytes::{BufMut, BytesMut};

let mut codec = AnyDelimiterCodec::new(b",;\r\n".to_vec(),b";".to_vec());
let buf = &mut BytesMut::new();
buf.reserve(200);
buf.put_slice(b"chunk 1,chunk 2;chunk 3\n\r");
assert_eq!("chunk 1", codec.decode(buf).unwrap().unwrap());
assert_eq!("chunk 2", codec.decode(buf).unwrap().unwrap());
assert_eq!("chunk 3", codec.decode(buf).unwrap().unwrap());
assert_eq!("", codec.decode(buf).unwrap().unwrap());
assert_eq!(None, codec.decode(buf).unwrap());

Implementations

Returns a AnyDelimiterCodec for splitting up data into chunks.

Note

The returned AnyDelimiterCodec will not have an upper bound on the length of a buffered chunk. See the documentation for new_with_max_length for information on why this could be a potential security risk.

Returns a AnyDelimiterCodec with a maximum chunk length limit.

If this is set, calls to AnyDelimiterCodec::decode will return a AnyDelimiterCodecError when a chunk exceeds the length limit. Subsequent calls will discard up to limit bytes from that chunk until a delimiter character is reached, returning None until the delimiter over the limit has been fully discarded. After that point, calls to decode will function as normal.

Note

Setting a length limit is highly recommended for any AnyDelimiterCodec which will be exposed to untrusted input. Otherwise, the size of the buffer that holds the chunk currently being read is unbounded. An attacker could exploit this unbounded buffer by sending an unbounded amount of input without any delimiter characters, causing unbounded memory consumption.

Returns the maximum chunk length when decoding.

use std::usize;
use tokio_util::codec::AnyDelimiterCodec;

let codec = AnyDelimiterCodec::new(b",;\n".to_vec(), b";".to_vec());
assert_eq!(codec.max_length(), usize::MAX);
use tokio_util::codec::AnyDelimiterCodec;

let codec = AnyDelimiterCodec::new_with_max_length(b",;\n".to_vec(), b";".to_vec(), 256);
assert_eq!(codec.max_length(), 256);

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The type of decoded frames.

The type of unrecoverable frame decoding errors. Read more

Attempts to decode a frame from the provided buffer of bytes. Read more

A default method available to be called when there are no more bytes available to be read from the underlying I/O. Read more

Provides a Stream and Sink interface for reading and writing to this Io object, using Decode and Encode to read and write the raw data. Read more

Returns the “default value” for a type. Read more

The type of encoding errors. Read more

Encodes a frame into the buffer provided. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.