Python32 Socket Server
server端： import socketserverclass MyTCPHandler(socketserver.BaseRequestHandler):
'''第1步：创建处理类，继承Base。 客户端每一次请求过来都会实例化这个类'''
def handle(self):
'''第1步：重写handle方法，handle默认存在父类中代码是空的。 客户端所有交互都在handle中完成'''
while True: #使其可以循环发送数据
self.data = self.request.recv(1024).decode().strip()
#这里的self.request.recv相当于之前用的conn.recv
print ("{} wrote:".format(self.client_address))
#打印客户端的IP地址信息
print (self.data)
#打印数据信息
self.request.send(self.data.upper().encode('utf-8'))
#传回数据给客户端，只是upper了一下
#sendall就是重复调用send
if __name__ == "__main__":
HOST,PORT = "localhost",9999
server = socketserver.TCPServer((HOST,PORT),MyTCPHandler)
#第2步：实例化TCPServer，并将IP和MyTCPHandler当做参数传给请求处理类
#监听客户端的每一个请求，就会实例化MyTCPHandler这个类，拿MyTCPHandler的handle与客户端交互。
server.serve_forever()
#第3步：允许永远处理多个请求
client端：
import socket
client = socket.socket()
client.connect(('localhost',9999))
while True:
msg = input(">>:").strip()
if len(msg) == 0:continue
client.send(msg.encode('utf-8'))
data = client.recv(1024)
print ("recv:",data.decode())
client.close()
client执行结果：
>>:abc
recv: ABC
>>:efg
recv: EFG
>>:hhh
recv: HHH
>>:
server执行结果：
127.0.0.1 wrote:
abc
127.0.0.1 wrote:
efg
127.0.0.1 wrote:
hhh
client断开后server报错：
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 53933)
Traceback (most recent call last):
File "D:\python37\lib\socketserver.py", line 313, in _handle_request_noblock
self.process_request(request, client_address)
File "D:\python37\lib\socketserver.py", line 344, in process_request
self.finish_request(request, client_address)
File "D:\python37\lib\socketserver.py", line 357, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "D:\python37\lib\socketserver.py", line 712, in __init__
self.handle()
File "E:/python/代码练习/A2.py", line 11, in handle
self.data = self.request.recv(1024).decode().strip()
ConnectionResetError: 远程主机强迫关闭了一个现有的连接。
----------------------------------------
#可以看到这里报错ConnectionResetError:
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