Class: EventMachine::HttpServer::Server

Inherits:
EM::P::HeaderAndContentProtocol
  • Object
show all
Defined in:
lib/em-http-server/server.rb

Instance Method Summary collapse

Instance Method Details

#bad_parsing ⇒ Object 



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# File 'lib/em-http-server/server.rb', line 56

def bad_parsing
  code = 400
  desc = "Bad request"
  string = respond_to?(:http_error_string) ? http_error_string(code, desc) : default_error_string(code, desc)
  send_error string
  raise("#{code} #{desc}")
end

#default_error_string(code, desc) ⇒ Object 



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# File 'lib/em-http-server/server.rb', line 64

def default_error_string(code, desc)
  string = "HTTP/1.1 #{code} #{desc}\r\n"
  string << "Connection: close\r\n"
  string << "Content-type: text/plain\r\n"
  string << "\r\n"
  string << "Detected error: HTTP code #{code}"
end

#parse_first_header(line) ⇒ Object

parse the first HTTP header line get the http METHOD, URI and PROTOCOL



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# File 'lib/em-http-server/server.rb', line 41

def parse_first_header(line)

  # split the line into:  METHOD URI PROTOCOL
  # eg:  GET / HTTP/1.1
  parsed = line.split(' ')

  # a correct request has three parts
  return bad_parsing unless parsed.size == 3

  @http_request_method, uri, @http_protocol = parsed

  # optional query string
  @http_request_uri, @http_query_string = uri.split('?')
end

#receive_request(headers, content) ⇒ Object

everything starts from here. Protocol::HeaderAndContentProtocol does the dirty job for us it will pass headers and content, we just need to parse the headers the fill the right variables



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# File 'lib/em-http-server/server.rb', line 12

def receive_request(headers, content)

  # save the whole headers array, verbatim
  @http_headers = headers

  # parse the headers into an hash to be able to access them like:
  #  @http[:host]
  #  @http[:content_type]
  @http = headers_2_hash headers

  # parse the HTTP request
  parse_first_header headers.first

  # save the binary content
  @http_content = content

  # invoke the method in the user-provided instance
  if respond_to?(:process_http_request)
    process_http_request
  end
rescue Exception => e
  # invoke the method in the user-provided instance
  if respond_to?(:http_request_errback)
    http_request_errback e
  end
end

#send_error(string) ⇒ Object

send back to the client an HTTP error



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# File 'lib/em-http-server/server.rb', line 73

def send_error(string)
  send_data string
  close_connection_after_writing
end