将套接字流重定向到标准输入或输出流
#!/usr/bin/env python3"""测试socket-stream 重定向模式"""import sys,os,timefrom multiprocessing import Processfrom socket import * def initListenerSocket(port=50008,host=''): """ 初始化在服务器模式下调用者用于监听连接的套接字 """ sock=socket() try: sock.bind((host,port)) except OSError as e: print('Address already in use') os._exit(1) sock.listen(5) conn,addr=sock.accept() return conn def redirecOut(port=50008,host='localhost'): """ 在接受之前其他连接都失败，连接调用者标准输出流 到一个套接字，这个套接字用于gui监听,在收听者启动后，启动调用者 """ sock=socket() try: sock.connect((host,port)) except ConnectionRefusedError as e: print('connection refuse') os._exit(1) file=sock.makefile('w') sys.stdout=file return sock def redirecIn(port=50008,host='localhost'): """ 连接调用者标准输入流到用于gui来提供的套接字 """ sock=socket() try: sock.connect((host,port)) except ConnectionRefusedError as e: print('conenction refuse') os._exit(1) file=sock.makefile('r') sys.stdin=file return sock def redirecBothAsClient(port=50008,host='localhost'): """ 在这种模式下，连接调用者标准输入和输出流到相同的套接字 调用者对于服务器来说就是客户端:发送消息，接受响应答复 """ sock=socket() try: sock.connect((host,port)) except ConnectionRefusedError as e: print('connection refuse') os._exit(1) ofile=sock.makefile('w') ifile=sock.makefile('r') sys.stdout=ofile sys.stdin=ifile return sock def redirecBothAsServer(port=50008,host='localhost'): """ 在这种模式下，连接调用者标准输入和输出流到相同的套接字，调用者对于 服务器来说就是服务端：接受消息，发送响应答复 """ sock=socket() try: sock.bind((host,port)) except OSError as e: print('Address already in use') os._exit(1) sock.listen(5) conn,addr=sock.accept() ofile=conn.makefile('w') ifile=conn.makefile('r') sys.stdout=ofile sys.stdin=ifile return conn def server1(): mypid=os.getpid() conn=initListenerSocket() file=conn.makefile('r') for i in range(3): data=file.readline().rstrip() print('server %s got [%s]' %(mypid,data)) def client1(): time.sleep(1) mypid=os.getpid() redirecOut() for i in range(3): print('client: %s:%s' % (mypid,i)) sys.stdout.flush() def server2(): mypid=os.getpid() conn=initListenerSocket() for i in range(3): conn.send(('server %s got [%s]/n' %(mypid,i)).encode()) def client2(): time.sleep(1) mypid=os.getpid() redirecIn() for i in range(3): data=input() print('client %s got [%s]]'%(mypid,data)) def server3(): mypid=os.getpid() conn=initListenerSocket() file=conn.makefile('r') for i in range(3): data=file.readline().rstrip() conn.send(('server %s got [%s]/n' % (mypid,data)).encode()) def client3(): time.sleep(1) mypid=os.getpid() redirecBothAsClient() for i in range(3): print('Client %s: %s' %(mypid,data)) data=input() sys.stderr.write('client %s got [%s]/n' %(mypid,data)) def server4(port=50008,host='localhost'): mypid=os.getpid() sock=socket() try: sock.connect((host,port)) ConnectionRefusedError as e: print('connection refuse') os._exit(1) file=sock.makefile('r') for i in range(3): sock.send(('server %s: %S/n' %(mypid,i)).encode()) data=file.readline().rstrip() print('server %s got [%s]' %(mypid,data)) def client4(): time.sleep(1) mypid=os.getpid() redirecBothAsServer() for i in range(3): data=input() print('client %s got [%s]'%(mypid,data)) sys.stdout.flush() def server5(): mypid=os.getpid() conn=initListenerSocket() file=conn.makefile('r') for i in range(3): conn.send(('server %s:%s/n' %(mypid,i)).encode()) data=file.readline().rstrip() print('server %s got [%s]' % (mypid,data)) def client5(): mypid=os.getpid() s=redirecBothAsClient() for i in range(3): data=input() print('client %s got [%s]'%(mypid,data)) sys.stdout.flush() def main(): server=eval('server'+sys.argv[1]) client=eval('client'+sys.argv[1]) Process(target=server).start() client() if __name__=='__main__': main() 
