network programming and sockets here is an asynchronous web server that concurrently handles multiple client connectionsbut which does not use callback functionsthreadsor processes this should be compared to examples in the asynchat and asyncore modules import os import mimetypes tryfrom http client import responses except importerrorfrom httplib import responses from socket import python python def http_server(address) cosocket(socket(af_inet,sock_stream)yield bind(addressyield listen( while trueconn,addr yield accept(yield newtask(http_request(conn,addr)del connaddr def http_request(conn,addr)request "while truedata yield conn recv( request +data if '\ \ \ \nin requestbreak header_data request[:request find( '\ \ \ \ ')header_text header_data decode('latin- 'header_lines header_text splitlines(methodurlproto header_lines[ split(if method ='get'if os path exists(url[ :])yield serve_file(conn,url[ :]elseyield error_response(conn, ,"file % not foundurlelseyield error_response(conn, ,"% method not implementedmethodyield conn close(def serve_file(conn,filename)content,encoding mimetypes guess_type(filenameyield conn send( "http/ ok\ \ "yield conn send(("content-type% \ \ncontentencode('latin- ')yield conn send(("content-length% \ \nos path getsize(filename)encode('latin- ')yield conn send( "\ \ " open(filename,"rb"while truedata read( if not databreak yield conn send(datadef error_response(conn,code,message)yield conn send(("http/ % % \ \ (coderesponses[code])encode('latin- ')yield conn send( "content-typetext/plain\ \ "yield conn send( "\ \ "yield conn send(message encode('latin- ') lib fl ff