class AMQ::Protocol::Stream

Overview

An IO wrapper that enforces AMQP frame size limits and reads frames Use #next_frame to read the next frame from the stream Don't use #read directly unless you know what you're doing

Defined in:

amq/protocol/stream.cr

Constructors

Instance Method Summary

Constructor Detail

def self.new(io : IO, frame_max : UInt32 = 8192_u32, format : IO::ByteFormat = IO::ByteFormat::NetworkEndian) #

Construct a new Stream wrapping the given io frame_max applies to payload size only, excluding the 8-byte frame envelope (7-byte header + 1-byte end marker)


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Instance Method Detail

def flush #
Description copied from class IO

Flushes buffered data, if any.

IO defines this is a no-op method, but including types may override.


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def next_frame(& : Frame -> _) #

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def next_frame : Frame #

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def read(slice : Bytes) #
Description copied from class IO

Reads at most slice.size bytes from this IO into slice. Returns the number of bytes read, which is 0 if and only if there is no more data to read (so checking for 0 is the way to detect end of file).

io = IO::Memory.new "hello"
slice = Bytes.new(4)
io.read(slice) # => 4
slice          # => Bytes[104, 101, 108, 108]
io.read(slice) # => 1
slice          # => Bytes[111, 101, 108, 108]
io.read(slice) # => 0

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def write(slice : Bytes) : Nil #

Delegate write to underlying IO without frame size checks


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