class_docstr: Manage the invocation of a WSGI application
class_docstr_tok: ["Manage","the","invocation","of","a","WSGI","application"]
docstr: Transmit headers to the client, via self._write()
docstr_tok: ["Transmit","headers","to","the","client",",","via","self._write","(",")"]
code: def send_headers(self):
      """Transmit headers to the client, via self._write()"""
      self.cleanup_headers()
      self.headers_sent = True
      if not self.origin_server or self.client_is_modern():
          self.send_preamble()
          self._write(bytes(self.headers))
  
imports: from .util import FileWrapper, guess_scheme, is_hop_by_hop
  from .headers import Headers
  import sys, os, time
label_desc: Use image node_id 15 for calling the BaseHandler obj's underlying member method code with example usage: obj.send_headers() without return types