Python 簡單的用戶端/伺服器應用

標籤：

Server：

import socketimport sysimport argparsehost = ‘localhost‘data_payload = 2048backlog = 5def echo_server(port):‘‘‘A simple echo server‘‘‘#Create a TCP socketsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)#Enable reuse address /portsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)#Bind the socket to the portserver_address = (host, port)print "Starting up echo server on %s port %s " %server_addresssock.bind(server_address)#Listen to clients, backlog argument specifies the max number of queued connectionssock.listen(5)while True:print "Waiting to receive message from client"client, address = sock.accept()data = client.recv(data_payload)if data:print "Data: %s" %dataclient.send(data)print "send %s bytes back to %s" %(len(data), address)#End connectionclient.close()if __name__=="__main__":parser = argparse.ArgumentParser(description=‘Socket Server Example‘)parser.add_argument(‘--port‘, action=‘store‘, dest=‘port‘, type=int, required=True)given_args = parser.parse_args()port = given_args.portecho_server(port)

　　

 

 

Client:

import socketimport sysimport argparsehost = ‘localhost‘def echo_client(port):‘‘‘A simple echo client‘‘‘#Create a TCP/IP socketsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)#Connect the socket to the serverserver_address = (host, port)print "Connecting to %s port %s"  %server_addresssock.connect(server_address)#Send datatry:#Send datamessage = "Test message. This will be echoed."print "Sending %s" %messagesock.sendall(message)#Look for the responseamount_received = 0amount_expected = len(message)while amount_received < amount_expected:data = sock.recv(16)amount_received +=len(data)print "Receviced :%s " %dataexcept socket.error, e:print "Socket error: %s"  %str(e)except Exception, e:print "Other exception: %s"  %str(e)finally:print "Closing connection to the server"sock.close()if __name__=="__main__":parser = argparse.ArgumentParser(description=‘Socket Client Example‘)parser.add_argument(‘--port‘, action=‘store‘, dest=‘port‘, type=int, required=True)given_args = parser.parse_args()port = given_args.portecho_client(port)

　　

Python 簡單的用戶端/伺服器應用