Enum MessagePortRequest

pub enum MessagePortRequest {
    PostMessage {
        message: WebMessage,
        responder: MessagePortPostMessageResponder,
    },
    ReceiveMessage {
        responder: MessagePortReceiveMessageResponder,
    },
}

Represents one end of an HTML5 MessageChannel. Can be used to send and exchange Messages with the peered MessagePort in the Frame’s script context. The port is destroyed when either end of the MessagePort channel is torn down.

Variants

PostMessage

Sends a WebMessage to the peer. These are processed in order, one at a time. It is not necessary for the caller to wait for the completion callback before calling [MessagePort.PostMessage] again.

If an error occurred, the FrameError will be set to one of these value:

• BUFFER_NOT_UTF8: The script in message’s data property is not UTF-8 encoded.
• NO_DATA_IN_MESSAGE: The data property is missing in message.

Fields

message: WebMessage

responder: MessagePortPostMessageResponder

ReceiveMessage

Asynchronously reads the next message from the channel. The client should invoke the callback when it is ready to process another message. Unreceived messages are buffered on the sender’s side and bounded by its available resources.

Fields

responder: MessagePortReceiveMessageResponder

Implementations

impl MessagePortRequest

pub fn into_post_message( self, ) -> Option<(WebMessage, MessagePortPostMessageResponder)>

pub fn into_receive_message(self) -> Option<MessagePortReceiveMessageResponder>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for MessagePortRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.