Struct resolve::message::MsgReader

[+] Show declaration

pub struct MsgReader<'a> { /* fields omitted */ }

[−] Expand description

Reads a single DNS message from a series of bytes.

Methods

impl<'a> MsgReader<'a>

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pub fn new(data: &[u8]) -> MsgReader

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Constructs a new message reader.

pub fn with_offset(data: &[u8], offset: usize) -> MsgReader

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Constructs a new message reader, which will read from data, beginning at offset.

pub fn remaining(&self) -> usize

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Returns the number of bytes remaining in the message.

pub fn read(&mut self, buf: &mut [u8]) -> Result<(), DecodeError>

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Reads a number of bytes equal to the length of the given buffer. Returns Err(ShortMessage) if there are not enough bytes remaining.

pub fn read_byte(&mut self) -> Result<u8, DecodeError>

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Reads a single byte from the message.

pub fn read_to_end(&mut self) -> Result<Vec<u8>, DecodeError>

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Reads all remaining bytes.

pub fn read_character_string(&mut self) -> Result<Vec<u8>, DecodeError>

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Read a character-string.

According to RFC 1035:

<character-string> is a single length octet followed by that number of characters. <character-string> is treated as binary information, and can be up to 256 characters in length (including the length octet).

pub fn read_u16(&mut self) -> Result<u16, DecodeError>

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Reads a big-endian unsigned 16 bit integer.

pub fn read_u32(&mut self) -> Result<u32, DecodeError>

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Reads a big-endian unsigned 32 bit integer.

pub fn read_into(     &mut self,     buf: &mut Vec<u8>,     n: usize ) -> Result<(), DecodeError>

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Reads n bytes, which are inserted at the end of the given buffer.

pub fn read_name(&mut self) -> Result<String, DecodeError>

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Reads a name from the message.