class
AMQ::Protocol::Stream
- AMQ::Protocol::Stream
- IO
- Reference
- Object
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.crConstructors
-
.new(io : IO, frame_max : UInt32 = 8192_u32, format : IO::ByteFormat = IO::ByteFormat::NetworkEndian)
Construct a new Stream wrapping the given
ioframe_maxapplies to payload size only, excluding the 8-byte frame envelope (7-byte header + 1-byte end marker)
Instance Method Summary
-
#flush
Flushes buffered data, if any.
- #next_frame(& : Frame -> _)
- #next_frame : Frame
-
#read(slice : Bytes)
Reads at most slice.size bytes from this
IOinto slice. -
#write(slice : Bytes) : Nil
Delegate write to underlying IO without frame size checks
Constructor Detail
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)
Instance Method Detail
Flushes buffered data, if any.
IO defines this is a no-op method, but including types may override.
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