Method: Ferrum::Network#subscribe

Defined in:
lib/ferrum/network.rb

#subscribe ⇒ Object 



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# File 'lib/ferrum/network.rb', line 116

def subscribe
  @page.on("Network.requestWillBeSent") do |params|
    request = Network::Request.new(params)

    # We can build exchange in two places, here on the event or when request
    # is interrupted. So we have to be careful when to create new one. We
    # create new exchange only if there's no with such id or there's but
    # it's filled with request which means this one is new but has response
    # for a redirect. So we assign response from the params to previous
    # exchange and build new exchange to assign this request to it.
    exchange = select(request.id).last
    exchange = build_exchange(request.id) unless exchange&.blank?

    # On redirects Chrome doesn't change `requestId` and there's no
    # `Network.responseReceived` event for such request. If there's already
    # exchange object with this id then we got redirected and params has
    # `redirectResponse` key which contains the response.
    if params["redirectResponse"]
      previous_exchange = select(request.id)[-2]
      response = Network::Response.new(@page, params)
      previous_exchange.response = response
    end

    exchange.request = request

    if exchange.navigation_request?(@page.main_frame.id)
      @exchange = exchange
    end
  end

  @page.on("Network.responseReceived") do |params|
    if exchange = select(params["requestId"]).last
      response = Network::Response.new(@page, params)
      exchange.response = response
    end
  end

  @page.on("Network.loadingFinished") do |params|
    exchange = select(params["requestId"]).last
    if exchange && exchange.response
      exchange.response.body_size = params["encodedDataLength"]
    end
  end

  @page.on("Log.entryAdded") do |params|
    entry = params["entry"] || {}
    if entry["source"] == "network" && entry["level"] == "error"
      exchange = select(entry["networkRequestId"]).last
      error = Network::Error.new(entry)
      exchange.error = error
    end
  end
end