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  • Pipy Documentation
  • Introduction
    • Overview
    • Concepts
  • Getting Started
    • Build and Install
    • Quick Start
    • Getting help
  • Release
    • Release History
      • 0.10.0-1
      • 0.22.0-31
      • 0.30.0
      • 0.50.0
  • Tutorial
    • Part 1: Hello
    • Part 2: Echo
    • Part 3: Proxy
    • Part 4: Routing
    • Part 5: Loading Balancing
    • Part 6: Configuration
    • Part 7: Plugins
  • Operating
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    • Pipy Repo
      • Introduction
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    • API
      • Configuration
        • acceptHTTPTunnel()
        • acceptProxyProtocol()
        • acceptSOCKS()
        • acceptTLS()
        • admin()
        • branch()
        • branchMessage()
        • branchMessageStart()
        • chain()
        • compress()
        • compressHTTP()
        • connect()
        • connectHTTPTunnel()
        • connectProxyProtocol()
        • connectSOCKS()
        • connectTLS()
        • decodeBGP()
        • decodeDubbo()
        • decodeHTTPRequest()
        • decodeHTTPResponse()
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        • decodeRESP()
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        • decompress()
        • decompressHTTP()
        • deframe()
        • demux()
        • demuxHTTP()
        • detectProtocol()
        • dummy()
        • dump()
        • encodeBGP()
        • encodeDubbo()
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        • exec()
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        • handleData()
        • handleMessage()
        • handleMessageBody()
        • handleMessageEnd()
        • handleMessageStart()
        • handleStreamEnd()
        • handleStreamStart()
        • handleTLSClientHello()
        • import()
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        • replaceMessage()
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        • replay()
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        • parse()
        • stringify()
      • Message
        • body
        • head
        • Message()
        • tail
      • MessageEnd
        • MessageEnd()
        • payload
        • tail
      • MessageStart
        • head
        • MessageStart()
      • Netmask
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    • PipyJS
      • Language
      • Builtin Objects
      • NMI

    MessageStart

    Description

    Event to mark the start of a message in an event stream.

    It can also hold the high-level representation for the header of the message in its head property.

    The content of head can vary according to the protocol being used. See For each protocol.

    Constructor

    new MessageStart(head?)

    Creates an instance of MessageStart.

    Properties

    head

    Protocol-dependent message header.

    type

    Type of the event.

    Example

    This example could be done more concisely with a Message object.

    pipy()
    .listen(8080)
    .demuxHTTP().to(
    $=>$.replaceMessage([
    // This can also be done with a single Message object.
    new MessageStart({
    status: 200,
    statusText: 'OK',
    headers: {
    'content-type': 'text/plain'
    }
    }),
    new Data('Hello!\n'),
    new MessageEnd,
    ])
    )

    See Also


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