Mojo::IOLoop::Stream - Non-blocking I/O stream
SYNOPSIS
use Mojo::IOLoop::Stream;
# Create stream
my $stream = Mojo::IOLoop::Stream->new($handle);
$stream->on(read => sub ($stream, $bytes) {...});
$stream->on(close => sub ($stream) {...});
$stream->on(error => sub ($stream, $err) {...});
# Start and stop watching for new data
$stream->start;
$stream->stop;
# Start reactor if necessary
$stream->reactor->start unless $stream->reactor->is_running;DESCRIPTION
Mojo::IOLoop::Stream is a container for I/O streams used by Mojo::IOLoop.
EVENTS
Mojo::IOLoop::Stream inherits all events from Mojo::EventEmitter and can emit the following new ones.
close
$stream->on(close => sub ($stream) {...});Emitted if the stream gets closed.
drain
$stream->on(drain => sub ($stream) {...});Emitted once all data has been written.
error
$stream->on(error => sub ($stream, $err) {...});Emitted if an error occurs on the stream, fatal if unhandled.
read
$stream->on(read => sub ($stream, $bytes) {...});Emitted if new data arrives on the stream.
timeout
$stream->on(timeout => sub ($stream) {...});Emitted if the stream has been inactive for too long and will get closed automatically.
write
$stream->on(write => sub ($stream, $bytes) {...});Emitted if new data has been written to the stream.
ATTRIBUTES
Mojo::IOLoop::Stream implements the following attributes.
high_water_mark
my $size = $msg->high_water_mark;
$msg = $msg->high_water_mark(1024);Maximum size of "write" buffer in bytes before "can_write" returns false, defaults to 1048576 (1MiB).
reactor
my $reactor = $stream->reactor;
$stream = $stream->reactor(Mojo::Reactor::Poll->new);Low-level event reactor, defaults to the reactor attribute value of the global Mojo::IOLoop singleton. Note that this attribute is weakened.
METHODS
Mojo::IOLoop::Stream inherits all methods from Mojo::EventEmitter and implements the following new ones.
bytes_read
my $num = $stream->bytes_read;Number of bytes received.
bytes_waiting
my $num = $stream->bytes_waiting;Number of bytes that have been enqueued with "write" and are waiting to be written.
bytes_written
my $num = $stream->bytes_written;Number of bytes written.
can_write
my $bool = $stream->can_write;Returns true if calling "write" is safe.
close
$stream->close;Close stream immediately.
close_gracefully
$stream->close_gracefully;Close stream gracefully.
handle
my $handle = $stream->handle;Get handle for stream, usually an IO::Socket::IP or IO::Socket::SSL object.
is_readable
my $bool = $stream->is_readable;Quick non-blocking check if stream is readable, useful for identifying tainted sockets.
is_writing
my $bool = $stream->is_writing;Check if stream is writing.
new
my $stream = Mojo::IOLoop::Stream->new($handle);Construct a new Mojo::IOLoop::Stream object.
start
$stream->start;Start or resume watching for new data on the stream.
steal_handle
my $handle = $stream->steal_handle;Steal "handle" and prevent it from getting closed automatically.
stop
$stream->stop;Stop watching for new data on the stream.
timeout
my $timeout = $stream->timeout;
$stream = $stream->timeout(45);Maximum amount of time in seconds stream can be inactive before getting closed automatically, defaults to 15. Setting the value to 0 will allow this stream to be inactive indefinitely.
write
$stream = $stream->write($bytes);
$stream = $stream->write($bytes => sub {...});Enqueue data to be written to the stream as soon as possible, the optional drain callback will be executed once all data has been written.