[英]Sockets server and client in the same python script
当我将套接字服务器和客户端代码都保存在同一脚本文件中时,如果使用start_new_thread在主线程和客户端在单独的线程中运行服务器,则以下代码不起作用
import socket, sys
from thread import *
host = socket.gethostname()
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.bind((host, 8888))
except socket.error as msg:
print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
sys.exit()
s.listen(10)
def clientthread(conn):
conn.send('Welcome to the server. Type something and hit enter\n')
while True:
data = conn.recv(1024)
reply = 'OK...' + data
if not data:
break
conn.sendall(reply)
conn.close()
while 1:
conn, addr = s.accept()
print 'Connected with ' + addr[0] + ':' + str(addr[1])
start_new_thread(clientthread ,(conn,))
s.close()
如果bind()
到gethostname()
,则还必须从客户端连接到该接口,即使该接口位于同一台计算机上。 "localhost"
或"127.0.0.1"
将不起作用。 如果您希望它们起作用,则直接将它们bind()
到它们,或绑定到所有内容( "0.0.0.0"
或只是一个空字符串""
)。
低预算测试代码:
from _thread import *
import socket,time
def client():
print("Thread starts")
time.sleep(1)
print("Thread connects")
sock=socket.create_connection((socket.gethostname(),8888))
#sock=socket.create_connection(("localhost",8888))
print("Thread after connect")
sock.sendall(b"Hello from client")
sock.close()
print("Thread ends")
serv=socket.socket()
serv.bind((socket.gethostname(),8888))
#serv.bind(("localhost",8888))
#serv.bind(("0.0.0.0",8888))
#serv.bind(("",8888))
serv.listen(10)
start_new_thread(client,())
print("Before accept")
s,c=serv.accept()
print("After accept "+c[0])
print("Message: "+s.recv(1024).decode("ASCII"))
s.close()
serv.close()
随意尝试测试各种袜子+绑定组合。
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