第九章:Python高级编程-Python socket编程
第九章:Python高级编程-Python socket编程
9.1 弄懂HTTP、Socket、TCP这几个概念
![五层网络模型](https://images.cnblogs.com/cnblogs_com/xunjishu/1758619/o_200509084731%E4%BA%94%E5%B1%82%E7%BD%91%E7%BB%9C%E6%A8%A1%E5%9E%8B.png)
Socket为我们封装好了协议
9.2 client和server实现通信
import socket
client = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
client.connect(('127.0.0.1', 8000))
while True:
re_data = input()
client.send(re_data.encode("utf8"))
data = client.recv(1024)
print(data.decode("utf8"))
# client.send("bobby".encode("utf8"))
# data = client.recv(1024)
# print (data.decode("utf8"))
# client.close()
![五层网络模型](https://images.cnblogs.com/cnblogs_com/xunjishu/1758619/o_200509085359socket%E7%BC%96%E7%A8%8B.png)
import socket
import threading
server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server.bind(('0.0.0.0', 8000))
server.listen()
def handle_sock(sock, addr):
while True:
data = sock.recv(1024)
print(data.decode("utf8"))
re_data = input()
sock.send(re_data.encode("utf8"))
#获取从客户端发送的数据
#一次获取1k的数据
while True:
sock, addr = server.accept()
#用线程去处理新接收的连接(用户)
client_thread = threading.Thread(target=handle_sock, args=(sock, addr))
client_thread.start()
# data = sock.recv(1024)
# print(data.decode("utf8"))
# re_data = input()
# sock.send(re_data.encode("utf8"))
# server.close()
# sock.close()
9.3 socket模拟http请求
# requests -> urlib -> socket
import socket
from urllib.parse import urlparse
def get_url(url):
#通过socket请求html
url = urlparse(url)
host = url.netloc
path = url.path
if path == "":
path = "/"
#建立socket连接
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# client.setblocking(False)
client.connect((host, 80)) #阻塞不会消耗cpu
#不停的询问连接是否建立好, 需要while循环不停的去检查状态
#做计算任务或者再次发起其他的连接请求
client.send("GET {} HTTP/1.1\r\nHost:{}\r\nConnection:close\r\n\r\n".format(path, host).encode("utf8"))
data = b""
while True:
d = client.recv(1024)
if d:
data += d
else:
break
data = data.decode("utf8")
html_data = data.split("\r\n\r\n")[1]
print(html_data)
client.close()
if __name__ == "__main__":
import time
start_time = time.time()
for url in range(20):
url = "http://shop.projectsedu.com/goods/{}/".format(url)
get_url(url)
print(time.time()-start_time)