Class: Webpush::Request

Inherits:
Object
  • Object
show all
Defined in:
lib/webpush/request.rb

Instance Method Summary collapse

Constructor Details

#initialize(message: "", subscription:, vapid:, **options) ⇒ Request

Returns a new instance of Request.



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# File 'lib/webpush/request.rb', line 10

def initialize(message: "", subscription:, vapid:, **options)
  endpoint = subscription.fetch(:endpoint)
  @endpoint = endpoint.gsub(GCM_URL, TEMP_GCM_URL)
  @payload = build_payload(message, subscription)
  @vapid_options = vapid
  @options = default_options.merge(options)
end

Instance Method Details

#body ⇒ Object 



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# File 'lib/webpush/request.rb', line 83

def body
  @payload.fetch(:ciphertext, "")
end

#build_vapid_headers ⇒ Object 



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# File 'lib/webpush/request.rb', line 72

def build_vapid_headers
  vapid_key = vapid_pem ? VapidKey.from_pem(vapid_pem) : VapidKey.from_keys(vapid_public_key, vapid_private_key)
  jwt = JWT.encode(jwt_payload, vapid_key.curve, 'ES256', jwt_header_fields)
  p256ecdsa = vapid_key.public_key_for_push_header

  {
    'Authorization' => 'WebPush ' + jwt,
    'Crypto-Key' => 'p256ecdsa=' + p256ecdsa,
  }
end

#headers ⇒ Object 



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# File 'lib/webpush/request.rb', line 49

def headers
  headers = {}
  headers["Content-Type"] = "application/octet-stream"
  headers["Ttl"]          = ttl
  headers["Urgency"]      = urgency

  if @payload.has_key?(:server_public_key)
    headers["Content-Encoding"] = "aesgcm"
    headers["Encryption"] = "salt=#{salt_param}"
    headers["Crypto-Key"] = "dh=#{dh_param}"
  end

  if api_key?
    headers["Authorization"] = "key=#{api_key}"
  elsif vapid?
    vapid_headers = build_vapid_headers
    headers["Authorization"] = vapid_headers["Authorization"]
    headers["Crypto-Key"] = [ headers["Crypto-Key"], vapid_headers["Crypto-Key"] ].compact.join(";")
  end

  headers
end

#perform ⇒ Object 



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# File 'lib/webpush/request.rb', line 18

def perform
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.ssl_timeout = @options[:ssl_timeout] unless @options[:ssl_timeout].nil?
  http.open_timeout = @options[:open_timeout] unless @options[:open_timeout].nil?
  http.read_timeout = @options[:read_timeout] unless @options[:read_timeout].nil?

  req = Net::HTTP::Post.new(uri.request_uri, headers)
  req.body = body
  resp = http.request(req)

  if resp.is_a?(Net::HTTPGone) # 410
    raise ExpiredSubscription.new(resp, uri.host)
  elsif resp.is_a?(Net::HTTPNotFound) # 404
    raise InvalidSubscription.new(resp, uri.host)
  elsif resp.is_a?(Net::HTTPUnauthorized) || resp.is_a?(Net::HTTPForbidden) || # 401, 403
    resp.is_a?(Net::HTTPBadRequest) && resp.message == "UnauthorizedRegistration" # 400, Google FCM
    raise Unauthorized.new(resp, uri.host)
  elsif resp.is_a?(Net::HTTPRequestEntityTooLarge) # 413
    raise PayloadTooLarge.new(resp, uri.host)
  elsif resp.is_a?(Net::HTTPTooManyRequests) # 429, try again later!
    raise TooManyRequests.new(resp, uri.host)
  elsif resp.is_a?(Net::HTTPServerError) # 5xx
    raise PushServiceError.new(resp, uri.host)
  elsif !resp.is_a?(Net::HTTPSuccess)  # unknown/unhandled response error
    raise ResponseError.new(resp, uri.host)
  end

  resp
end