Heim >Backend-Entwicklung >Python-Tutorial >python套接字流重定向实例汇总

python套接字流重定向实例汇总

WBOY
WBOYOriginal
2016-06-10 15:05:421016Durchsuche

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,time
from multiprocessing import Process
from 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()

Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn