Class: Hedra::HttpClient

Inherits:
Object
  • Object
show all
Defined in:
lib/hedra/http_client.rb

Constant Summary collapse

DEFAULT_USER_AGENT = 
"Hedra/#{VERSION} Security Header Analyzer".freeze
MAX_RETRIES = 
3
RETRY_DELAY = 
1
MAX_REDIRECTS = 
10

Instance Method Summary collapse

Constructor Details

#initialize(timeout: 10, proxy: nil, user_agent: nil, follow_redirects: true, verbose: false, max_retries: MAX_RETRIES) ⇒ HttpClient

rubocop:disable Metrics/ParameterLists



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# File 'lib/hedra/http_client.rb', line 13

def initialize( # rubocop:disable Metrics/ParameterLists
  timeout: 10, proxy: nil, user_agent: nil, follow_redirects: true, verbose: false, max_retries: MAX_RETRIES
)
  @timeout = timeout
  @proxy = proxy
  @user_agent = user_agent || DEFAULT_USER_AGENT
  @follow_redirects = follow_redirects
  @verbose = verbose
  @max_retries = max_retries
end

Instance Method Details

#get(url, redirect_count: 0) ⇒ Object 



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# File 'lib/hedra/http_client.rb', line 24

def get(url, redirect_count: 0)
  retries = 0

  begin
    log "Fetching #{url}..."

    client = build_client
    response = client.get(url)

    if @follow_redirects && response.status.redirect?
      raise NetworkError, "Too many redirects (#{MAX_REDIRECTS})" if redirect_count >= MAX_REDIRECTS

      location = response.headers['Location']
      location = resolve_redirect_url(url, location)
      log "Following redirect to #{location}"
      return get(location, redirect_count: redirect_count + 1)
    end

    raise NetworkError, "HTTP #{response.status}: #{response.status.reason}" unless response.status.success?

    log "Success: #{response.status}"
    response
  rescue HTTP::Error, Errno::ECONNREFUSED, Errno::ETIMEDOUT, Errno::EHOSTUNREACH => e
    retries += 1
    if retries <= @max_retries && retryable_error?(e)
      delay = RETRY_DELAY * (2**(retries - 1))
      log "Retry #{retries}/#{@max_retries} after #{delay}s: #{e.message}"
      sleep delay
      retry
    end

    raise NetworkError, "Failed after #{@max_retries} retries: #{e.message}"
  end
end