name : simple_server.py """BaseHTTPServer that implements the Python WSGI protocol (PEP 333, rev 1.21) This is both an example of how WSGI can be implemented, and a basis for running simple web applications on a local machine, such as might be done when testing or debugging an application. It has not been reviewed for security issues, however, and we strongly recommend that you use a "real" web server for production use. For example usage, see the 'if __name__=="__main__"' block at the end of the module. See also the BaseHTTPServer module docs for other API information. """ from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer import urllib, sys from wsgiref.handlers import SimpleHandler __version__ = "0.1" __all__ = ['WSGIServer', 'WSGIRequestHandler', 'demo_app', 'make_server'] server_version = "WSGIServer/" + __version__ sys_version = "Python/" + sys.version.split()[0] software_version = server_version + ' ' + sys_version class ServerHandler(SimpleHandler): server_software = software_version def close(self): try: self.request_handler.log_request( self.status.split(' ',1)[0], self.bytes_sent ) finally: SimpleHandler.close(self) class WSGIServer(HTTPServer): """BaseHTTPServer that implements the Python WSGI protocol""" application = None def server_bind(self): """Override server_bind to store the server name.""" HTTPServer.server_bind(self) self.setup_environ() def setup_environ(self): # Set up base environment env = self.base_environ = {} env['SERVER_NAME'] = self.server_name env['GATEWAY_INTERFACE'] = 'CGI/1.1' env['SERVER_PORT'] = str(self.server_port) env['REMOTE_HOST']='' env['CONTENT_LENGTH']='' env['SCRIPT_NAME'] = '' def get_app(self): return self.application def set_app(self,application): self.application = application class WSGIRequestHandler(BaseHTTPRequestHandler): server_version = "WSGIServer/" + __version__ def get_environ(self): env = self.server.base_environ.copy() env['SERVER_PROTOCOL'] = self.request_version env['REQUEST_METHOD'] = self.command if '?' in self.path: path,query = self.path.split('?',1) else: path,query = self.path,'' env['PATH_INFO'] = urllib.unquote(path) env['QUERY_STRING'] = query host = self.address_string() if host != self.client_address[0]: env['REMOTE_HOST'] = host env['REMOTE_ADDR'] = self.client_address[0] if self.headers.typeheader is None: env['CONTENT_TYPE'] = self.headers.type else: env['CONTENT_TYPE'] = self.headers.typeheader length = self.headers.getheader('content-length') if length: env['CONTENT_LENGTH'] = length for h in self.headers.headers: k,v = h.split(':',1) k=k.replace('-','_').upper(); v=v.strip() if k in env: continue # skip content length, type,etc. if 'HTTP_'+k in env: env['HTTP_'+k] += ','+v # comma-separate multiple headers else: env['HTTP_'+k] = v return env def get_stderr(self): return sys.stderr def handle(self): """Handle a single HTTP request""" self.raw_requestline = self.rfile.readline(65537) if len(self.raw_requestline) > 65536: self.requestline = '' self.request_version = '' self.command = '' self.send_error(414) return if not self.parse_request(): # An error code has been sent, just exit return handler = ServerHandler( self.rfile, self.wfile, self.get_stderr(), self.get_environ() ) handler.request_handler = self # backpointer for logging handler.run(self.server.get_app()) def demo_app(environ,start_response): from StringIO import StringIO stdout = StringIO() print >>stdout, "Hello world!" print >>stdout h = environ.items(); h.sort() for k,v in h: print >>stdout, k,'=', repr(v) start_response("200 OK", [('Content-Type','text/plain')]) return [stdout.getvalue()] def make_server( host, port, app, server_class=WSGIServer, handler_class=WSGIRequestHandler ): """Create a new WSGI server listening on `host` and `port` for `app`""" server = server_class((host, port), handler_class) server.set_app(app) return server if __name__ == '__main__': httpd = make_server('', 8000, demo_app) sa = httpd.socket.getsockname() print "Serving HTTP on", sa[0], "port", sa[1], "..." import webbrowser webbrowser.open('http://localhost:8000/xyz?abc') httpd.handle_request() # serve one request, then exit httpd.server_close()