Web动态服务器-1
#coding=utf-8 import socket import sys from multiprocessing import Process import re class WSGIServer(object): addressFamily = socket.AF_INET socketType = socket.SOCK_STREAM requestQueueSize = 5 def __init__(self, serverAddress): #创建一个tcp套接字 self.listenSocket = socket.socket(self.addressFamily,self.socketType) #允许重复使用上次的套接字绑定的port self.listenSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) #绑定 self.listenSocket.bind(serverAddress) #变为被动，并制定队列的长度 self.listenSocket.listen(self.requestQueueSize) self.servrName = "localhost" self.serverPort = serverAddress[1] def serveForever(self): '循环运行web服务器，等待客户端的链接并为客户端服务' while True: #等待新客户端到来 self.clientSocket, client_address = self.listenSocket.accept() #方法2，多进程服务器，并发服务器于多个客户端 newClientProcess = Process(target = self.handleRequest) newClientProcess.start() #因为创建的新进程中，会对这个套接字+1，所以需要在主进程中减去依次，即调用一次close self.clientSocket.close() def setApp(self, application): '设置此WSGI服务器调用的应用程序入口函数' self.application = application def handleRequest(self): '用一个新的进程，为一个客户端进行服务' self.recvData = self.clientSocket.recv(2014) requestHeaderLines = self.recvData.splitlines() for line in requestHeaderLines: print(line) httpRequestMethodLine = requestHeaderLines[0] getFileName = re.match("[^/]+(/[^ ]*)", httpRequestMethodLine).group(1) print("file name is ===>%s"%getFileName) #for test if getFileName[-3:] != ".py": if getFileName == '/': getFileName = documentRoot + "/index.html" else: getFileName = documentRoot + getFileName print("file name is ===2>%s"%getFileName) #for test try: f = open(getFileName) except IOError: responseHeaderLines = "HTTP/1.1 404 not found " responseHeaderLines += " " responseBody = "====sorry ,file not found====" else: responseHeaderLines = "HTTP/1.1 200 OK " responseHeaderLines += " " responseBody = f.read() f.close() finally: response = responseHeaderLines + responseBody self.clientSocket.send(response) self.clientSocket.close() else: #根据接收到的请求头构造环境变量字典 env = {} #调用应用的相应方法，完成动态数据的获取 bodyContent = self.application(env, self.startResponse) #组织数据发送给客户端 self.finishResponse(bodyContent) def startResponse(self, status, response_headers): serverHeaders = [ ('Date', 'Tue, 31 Mar 2016 10:11:12 GMT'), ('Server', 'WSGIServer 0.2'), ] self.headers_set = [status, response_headers + serverHeaders] def finishResponse(self, bodyContent): try: status, response_headers = self.headers_set #response的第一行 response = 'HTTP/1.1 {status} '.format(status=status) #response的其他头信息 for header in response_headers: response += '{0}: {1} '.format(*header) #添加一个换行，用来和body进行分开 response += ' ' #添加发送的数据 for data in bodyContent: response += data self.clientSocket.send(response) finally: self.clientSocket.close() #设定服务器的端口 serverAddr = (HOST, PORT) = '', 8888 #设置服务器静态资源的路径 documentRoot = './html' #设置服务器动态资源的路径 pythonRoot = './wsgiPy' def makeServer(serverAddr, application): server = WSGIServer(serverAddr) server.setApp(application) return server def main(): if len(sys.argv) < 2: sys.exit('请按照要求，指定模块名称:应用名称,例如 module:callable') #获取module:callable appPath = sys.argv[1] #根据冒号切割为module和callable module, application = appPath.split(':') #添加路径套sys.path sys.path.insert(0, pythonRoot) #动态导入module变量中指定的模块 module = __import__(module) #获取module变量中指定的模块的，application变量指定的属性 application = getattr(module, application) httpd = makeServer(serverAddr, application) print('WSGIServer: Serving HTTP on port %d ... '%PORT) httpd.serveForever() if __name__ == '__main__': main()
应用程序示例
mport time def app(environ, start_response): status = '200 OK' response_headers = [('Content-Type', 'text/plain')] start_response(status, response_headers) return [str(environ)+'==Hello world from a simple WSGI application!--->%s '%time.ctime()]
Web动态服务器-2-传递数据给应用
#coding=utf-8 import socket import sys from multiprocessing import Process import re class WSGIServer(object): addressFamily = socket.AF_INET socketType = socket.SOCK_STREAM requestQueueSize = 5 def __init__(self, serverAddress): #创建一个tcp套接字 self.listenSocket = socket.socket(self.addressFamily,self.socketType) #允许重复使用上次的套接字绑定的port self.listenSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) #绑定 self.listenSocket.bind(serverAddress) #变为被动，并制定队列的长度 self.listenSocket.listen(self.requestQueueSize) self.servrName = "localhost" self.serverPort = serverAddress[1] def serveForever(self): '循环运行web服务器，等待客户端的链接并为客户端服务' while True: #等待新客户端到来 self.clientSocket, client_address = self.listenSocket.accept() #方法2，多进程服务器，并发服务器于多个客户端 newClientProcess = Process(target = self.handleRequest) newClientProcess.start() #因为创建的新进程中，会对这个套接字+1，所以需要在主进程中减去依次，即调用一次close self.clientSocket.close() def setApp(self, application): '设置此WSGI服务器调用的应用程序入口函数' self.application = application def handleRequest(self): '用一个新的进程，为一个客户端进行服务' self.recvData = self.clientSocket.recv(2014) requestHeaderLines = self.recvData.splitlines() for line in requestHeaderLines: print(line) httpRequestMethodLine = requestHeaderLines[0] getFileName = re.match("[^/]+(/[^ ]*)", httpRequestMethodLine).group(1) print("file name is ===>%s"%getFileName) #for test if getFileName[-3:] != ".py": if getFileName == '/': getFileName = documentRoot + "/index.html" else: getFileName = documentRoot + getFileName print("file name is ===2>%s"%getFileName) #for test try: f = open(getFileName) except IOError: responseHeaderLines = "HTTP/1.1 404 not found " responseHeaderLines += " " responseBody = "====sorry ,file not found====" else: responseHeaderLines = "HTTP/1.1 200 OK " responseHeaderLines += " " responseBody = f.read() f.close() finally: response = responseHeaderLines + responseBody self.clientSocket.send(response) self.clientSocket.close() else: #处理接收到的请求头 self.parseRequest() #根据接收到的请求头构造环境变量字典 env = self.getEnviron() #调用应用的相应方法，完成动态数据的获取 bodyContent = self.application(env, self.startResponse) #组织数据发送给客户端 self.finishResponse(bodyContent) def parseRequest(self): '提取出客户端发送的request' requestLine = self.recvData.splitlines()[0] requestLine = requestLine.rstrip(' ') self.requestMethod, self.path, self.requestVersion = requestLine.split(" ") def getEnviron(self): env = {} env['wsgi.version'] = (1, 0) env['wsgi.input'] = self.recvData env['REQUEST_METHOD'] = self.requestMethod # GET env['PATH_INFO'] = self.path # /index.html return env def startResponse(self, status, response_headers, exc_info=None): serverHeaders = [ ('Date', 'Tue, 31 Mar 2016 10:11:12 GMT'), ('Server', 'WSGIServer 0.2'), ] self.headers_set = [status, response_headers + serverHeaders] def finishResponse(self, bodyContent): try: status, response_headers = self.headers_set #response的第一行 response = 'HTTP/1.1 {status} '.format(status=status) #response的其他头信息 for header in response_headers: response += '{0}: {1} '.format(*header) #添加一个换行，用来和body进行分开 response += ' ' #添加发送的数据 for data in bodyContent: response += data self.clientSocket.send(response) finally: self.clientSocket.close() #设定服务器的端口 serverAddr = (HOST, PORT) = '', 8888 #设置服务器静态资源的路径 documentRoot = './html' #设置服务器动态资源的路径 pythonRoot = './wsgiPy' def makeServer(serverAddr, application): server = WSGIServer(serverAddr) server.setApp(application) return server def main(): if len(sys.argv) < 2: sys.exit('请按照要求，指定模块名称:应用名称,例如 module:callable') #获取module:callable appPath = sys.argv[1] #根据冒号切割为module和callable module, application = appPath.split(':') #添加路径套sys.path sys.path.insert(0, pythonRoot) #动态导入module变量中指定的模块 module = __import__(module) #获取module变量中制定的模块的application变量指定的属性 application = getattr(module, application) httpd = makeServer(serverAddr, application) print('WSGIServer: Serving HTTP on port {port} ... '.format(port=PORT)) httpd.serveForever() if __name__ == '__main__': main()
