用Python实现点对点的聊天，2个程序，一个是client.py，一个是server.py，通过本机地址127.0.0.1连接进行通信，利用多线程把发送消息和接收消息分开独立进行。
client代码：
import socket
import sys
import threading
import time
class client():
def __init__(self):
self.s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
self.ip = "127.0.0.1"
def connect(self):
try:
self.s.connect((self.ip,8888))
print("connect success")
print('connect time: '+time.ctime())
except ConnectionError:
print('connect error')
sys.exit(-1)
except:
print('unexpect error')
sys.exit(-1)
def send_sth(self):
while True:
sth=input('say something:\n')
try:
self.s.sendall(sth.encode('utf-8'))
except ConnectionError:
print('connect error')
sys.exit(-1)
except:
print('unexpect error')
sys.exit(-1)
def receive(self):
while True:
try:
r=self.s.recv(1024)
print ('get message:'+r.decode('utf-8'))
except ConnectionError:
print('connect error')
sys.exit(-1)
except:
print('unexpect error')
sys.exit(-1)
c1 = client()
c1.connect()
threading._start_new_thread(c1.receive,())
c1.send_sth()
server代码：
import socket
import sys
import threading
import time
def server():
def bind():
HOST='127.0.0.1'
s.bind((HOST,8888))
print("bind ok")
def listen():
s.listen(10)
print ('Socket now listening')
def send_sth(conn):
while True:
try:
sth=input('say something:\n')
conn.sendall(sth.encode('utf-8'))
except ConnectionError:
print('connect error')
sys.exit(-1)
except:
print('unexpect error')
sys.exit(-1)
def recv(conn):
while True:
try:
data=conn.recv(1024)
data2=data.decode('utf-8')
print('get message:'+data2)
except ConnectionError:
print('connect error')
sys.exit(-1)
except:
print('unexpect error')
sys.exit(-1)
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
bind()
listen()
conn,addr=s.accept()
print("connect success")
print('connect time: '+time.ctime())
threading._start_new_thread(recv,(conn,))
send_sth(conn)
if __name__=='__main__':
server()
开启多线程有2种方法，上面2个程序都是用函数的方法，还有一种方法是用类继承threading类
代码：
import socket
import threading
class client(threading.Thread):
def __init__(self,sth):
threading.Thread.__init__(self)
self.sth=sth
def run(self):
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
ip="127.0.0.1"
try:
s.connect((ip,8888))
except :
print('con error')
exit()
#print("connect success")
s.sendall(self.sth.encode('utf-8'))
#print("send success")
try:
r=s.recv(1024)
except:
print('recv error')
exit()
print (r.decode('utf-8'))
c1=client('hello 1')
c1.start()
c2=client('hello 2')
c2.start()
