TCP
import socket
# 1.創(chuàng)建一個socket,AF_INET代表IPv4
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 2.建立連接,前者是域名或者IP，后者是端口號职恳，Web是80韧涨，F(xiàn)TP是21，127.0.0.1是表示本機地址
s.connect(('127.0.0.1',9999))
# 3接受消息,每次最多接受1k字節(jié)
print(s.recv(1024).decode('utf-8'))
for data in [b'Michael', b'Tracy', b'Sarah']:
#4發(fā)送消息
s.send(data)
print(s.recv(1024).decode('utf-8'))
s.send(b'exit')
s.close()
import socket, threading, time
#1.創(chuàng)建socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#2.監(jiān)聽端口,listen參數(shù)代表傳入的參數(shù)指定等待連接的最大數(shù)量
s.bind(('127.0.0.1', 9999))
s.listen(5)
print('waiting for connection')
def tcplink(sock, addr):
print('Accept new connection from %s:%s...' % addr)
sock.send(b'Welcome')
while True:
data = sock.recv(1024)
time.sleep(1)
#如果客戶端發(fā)送exit字符串伦仍，就關(guān)閉連接
if not data or data.decode('utf-8') == 'exit':
break
sock.send(('Hello, %s!' % data.decode('utf-8')).encode('utf-8'))
sock.close()
print('connection from %s:%s closed' % addr)
while True:
#3.接受一個新連接
sock, addr = s.accept()
#4.創(chuàng)建新線程來處理TCP連接
t = threading.Thread(target=tcplink, args=(sock, addr))
t.start()
UDP
import socket
# 1.創(chuàng)建一個socket,AF_INET代表IPv4
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
for data in [b'Michael', b'Tracy', b'Sarah']:
#4發(fā)送消息
s.sendto(data,('127.0.0.1', 9999))
print(s.recv(1024).decode('utf-8'))
s.close()
import socket, threading, time
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(('127.0.0.1', 9999))
print('waiting for connection')
while True:
data, addr = s.recvfrom(1024)
print('Received from %s:%s' % addr)
s.sendto(b'hello,%s' % data, addr )
