2019-11-19

import socket

import re

def service_client(new_socket, request):

#为这个客户端返回数据

    # 1. 接收浏览器发送过来的请求，即http请求

    # GET / HTTP/1.1

# ……

# request = new_socket.recv(1024).decode("utf-8")

# print(">>>" * 20)

# print(request)

    request_lines = request.splitlines()

print("")

print(">" *20)

print(request_lines)

# GET /index.html HTTP/1.1

# get post put del

    ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])

file_name =""

    if ret:

file_name = ret.group(1)

print("*" *50, file_name)

if file_name =='/':

file_name ='/index.html'

    # 2. 返回http格式的数据给浏览器

    try:

# f = open("../buickmall/index.html", "rb")

        f = open("../buickmall" + file_name, "rb")

except:

response ="HTTP/1.1 404 NOT FOUND\r\n"

        response +="\r\n"

        response +="---file not found---"

        new_socket.send(response.encode("utf-8"))

else:

html_content = f.read()

f.close()

# 2.2 准备发送给浏览器的数据：Body

        response_body = html_content

# 2.1 准备发送给浏览器的数据：Header

        response_header ="HTTP/1.1 200 OK\r\n"

        response_header +="Content-Length:%d\r\n" % len(response_body)

response_header +="\r\n"

        response = response_header.encode("utf-8") + response_body

# 将Response发送给浏览器

        new_socket.send(response)

# 关闭套接字

    # new_socket.close()·

def main():

"""用来完成整体的控制"""

    # 1. 创建套接字

    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 2. 绑定

    tcp_server_socket.bind(("", 7890))

# 3. 变为监听套接字

    tcp_server_socket.listen(128)

tcp_server_socket.setblocking(False)# 将套接字变为非阻塞

    client_socket_list = list()

while True:

# 4. 等待新客户端的链接

        try:

new_socket, client_addr = tcp_server_socket.accept()

except Exceptionas ret:

pass

        else:

new_socket.setblocking(False)

client_socket_list.append(new_socket)

for client_socketin client_socket_list:

try:

recv_data = client_socket.recv(1024).decode("utf-8")

except Exceptionas ret:

pass

            else:

if recv_data:

# 5. 为这个客户端服务

                    service_client(client_socket, recv_data)

else:

client_socket.close()

client_socket_list.remove(client_socket)

# 6.关闭监听套接字

    tcp_server_socket.close()

if __name__ =="__main__":

main()



import socket

import re

import select

def service_client(new_socket, request):

"""为这个客户端返回数据"""

    # 1. 接收浏览器发送过来的请求，即http请求

    # GET / HTTP/1.1

# ……

# request = new_socket.recv(1024).decode("utf-8")

# print(">>>" * 20)

# print(request)

    request_lines = request.splitlines()

print("")

print(">" *20)

print(request_lines)

# GET /index.html HTTP/1.1

# get post put del

    ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])

file_name =""

    if ret:

file_name = ret.group(1)

print("*" *50, file_name)

if file_name =='/':

file_name ='/index.html'

    # 2. 返回http格式的数据给浏览器

    try:

# f = open("../buickmall/index.html", "rb")

        f = open("../buickmall" + file_name, "rb")

except:

response ="HTTP/1.1 404 NOT FOUND\r\n"

        response +="\r\n"

        response +="---file not found---"

        new_socket.send(response.encode("utf-8"))

else:

html_content = f.read()

f.close()

# 2.2 准备发送给浏览器的数据：Body

        response_body = html_content

# 2.1 准备发送给浏览器的数据：Header

        response_header ="HTTP/1.1 200 OK\r\n"

        response_header +="Content-Length:%d\r\n" % len(response_body)

response_header +="\r\n"

        response = response_header.encode("utf-8") + response_body

# 将Response发送给浏览器

        new_socket.send(response)

# 关闭套接字

    # new_socket.close()

def main():

"""用来完成整体的控制"""

    # 1. 创建套接字

    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

# 2. 绑定

    tcp_server_socket.bind(("", 7890))

# 3. 变为监听套接字

    tcp_server_socket.listen(128)

tcp_server_socket.setblocking(False)# 将套接字变为非阻塞

    # 创建一个epoll对象

    epl = select.epoll()

# 将监听套接字对应的fd注册到epoll中

    epl.register(tcp_server_socket.fileno(), select.EPOLLIN)

fd_event_dict = dict()

while True:

fd_event_list = epl.poll()# 默认会阻塞，直到os检测到数据到来，通过事件通知的方式告诉程序，此时才会解阻塞

        # [(fd, event), (……)]

        # 参数fd：套接字对应的文件描述符

        # 参数event：这个fd是什么事件，例如可调用recv接收等

        for fd, eventin fd_event_list:

# 4. 等待新客户端的链接

            if fd == tcp_server_socket.fileno():

new_socket, client_addr = tcp_server_socket.accept()

epl.register(new_socket.fileno(), select.EPOLLIN)

fd_event_dict[new_socket.fileno()] = new_socket

elif event == select.EPOLLIN:

# 判断已经链接的客户端是否有数据发送过来

                recv_data = fd_event_dict[fd].recv(1024).decode("utf-8")

if recv_data:

# 5. 为这个客户端服务

                    service_client(fd_event_dict[fd], recv_data)

else:

fd_event_dict[fd].close()

epl.unregister(fd)

del fd_event_dict[fd]

# 6.关闭监听套接字

    tcp_server_socket.close()

if __name__ =="__main__":

main()



import gevent

import time

from geventimport monkey

monkey.patch_all()

def f1(n):

for iin range(n):

print(gevent.getcurrent(), i)

time.sleep(0.5)

# gevent.sleep(0.5)

def f2(n):

for iin range(n):

print(gevent.getcurrent(), i)

time.sleep(0.5)

# gevent.sleep(0.5)

def f3(n):

for iin range(n):

print(gevent.getcurrent(), i)

time.sleep(0.5)

# gevent.sleep(0.5)

# print("---1---")

# g1 = gevent.spawn(f1, 5)  # 参数f指定协程在哪执行，需要传参就直接写在后边

# print("---2---")

# g2 = gevent.spawn(f2, 5)

# print("---3---")

# g3 = gevent.spawn(f3, 5)

# print("---4---")

# g1.join()

# g2.join()

# g3.join()

gevent.joinall([

gevent.spawn(f1, 5),

    gevent.spawn(f2, 5),

    gevent.spawn(f3, 5)

])



import urllib.request

import gevent

from geventimport monkey

monkey.patch_all()

def downloader(img_name, img_url):

req = urllib.request.urlopen(img_url)

img_content = req.read()

with open(img_name, "wb")as f:

f.write(img_content)

def main():

gevent.joinall([

gevent.spawn(downloader, "1.jpg","https://rpic.douyucdn.cn/live-cover/appCovers/2019/10/27/6510444_20191027144840_small.jpg"),

        gevent.spawn(downloader,"2.jpg","https://rpic.douyucdn.cn/appCovers/416825/20160915/802092c2192960b416832a28a59c373b_small.jpg")

])

if __name__ =="__main__":

main()



# 浏览器-->服务器发送的请求格式如下：

#

#  # 表示请求的目标、协议版本

#  POST / HTTP/1.1

#  # 表示服务器的IP地址和端口

#  Host: 127.0.0.1:8080

#  # 表示是长链接

#  Connection: keep-alive

#  # 表示谷歌浏览器告诉服务器，浏览器可以处理https协议

#  Upgrade-Insecure-Requests: 1

#  # 表示浏览器的版本

#  User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.80 Safari/537.36

#  # 表示浏览器可以接收什么样的格式

#  Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3

#  # 表示能够接收的压缩格式

#  Accept-Encoding: gzip, deflate, br

#  # 表示能接收的语言，能接收中文

#  Accept-Language: zh-CN,zh;q=0.9

#

#  username:tom

#  password:123

#

# 服务器-->浏览器回送的数据格式如下：

#  HTTP/1.1 200 OK

#  Bdpagetype: 1

#  Bdqid: 0x9dd09c83000204a0

#  # 表示你的缓存是共享的、还是私有的，现在是私有的

#  Cache-Control: private

#  Connection: Keep-Alive

#  # 编码格式，浏览器就按照这个格式来解压

#  Content-Encoding: gzip

#  # 服务器传回的内容格式、字符集

#  Content-Type: text/html; charset=utf-8

#  Content-Length: 123456789

#  Cxy_all: baidu+34491ab9ca3c8ba32cebe1d26059f593

#  # 表示服务器当前的时间

#  Date: Sun, 23 Jun 2019 03:38:04 GMT

#  Expires: Sun, 23 Jun 2019 03:37:52 GMT

#  # 服务器：BWS是百度服务器的一个简称

#  Server: BWS/1.1

#  # 设置Cookie

#  Set-Cookie: delPer=0; path=/; domain=.baidu.com

#  Set-Cookie: BDSVRTM=0; path=/

#  Set-Cookie: BD_HOME=0; path=/

#  Set-Cookie: H_PS_PSSID=1441_21127_29135_29237_28518_29099_29131_29369_28833_29220_26350; path=/; domain=.baidu.com

#  Strict-Transport-Security: max-age=172800

#  Vary: Accept-Encoding

#  X-Ua-Compatible: IE=Edge,chrome=1

#  Transfer-Encoding: chunked

#

#  <h1>hahaha</h1>



import socket

def service_client(new_socket):

"""为这个客户端返回数据"""

    # 1. 接收浏览器发送过来的请求，即http请求

    # GET / HTTP/1.1

# ……

    request = new_socket.recv(1024)

print(request)

# 2. 返回http格式的数据给浏览器

    # 2.1 准备发送给浏览器的数据：Header

    response ="HTTP/1.1 200 OK\r\n"

    response +="\r\n"

    # 2.2 准备发送给浏览器的数据：Body

    response +="

hahaha

"

    new_socket.send(response.encode("utf-8"))

# 关闭套接字

    new_socket.close()

def main():

"""用来完成整体的控制"""

    # 1. 创建套接字

    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

# 2. 绑定

    tcp_server_socket.bind(("", 7890))

# 3. 变为监听套接字（最大连接数是128）

    tcp_server_socket.listen(128)

while True:

# 4. 等待新客户端的链接

        new_socket, client_addr = tcp_server_socket.accept()

# 5. 为这个客户端服务

        service_client(new_socket)

# 6.关闭监听套接字

    tcp_server_socket.close()

if __name__ =="__main__":

main()



while true:

print('---1---')

time.sleep(0.1)

yield

def task_2():

while true:

print('---2---')

time.sleep(0.1)

yield

def main():

t1 = task_1()

t2 = task_2()

while true：

    next(t1)

next(t2)

if __name__=="__main__":



import urllib.request

def main():

# req = urllib.request.urlopen("https://gss3.bdstatic.com/-Po3dSag_xI4khGkpoWK1HF6hhy/baike/whfpf%3D360%2C280%2C50/sign=71bcd12444fbfbeddc0c653f1ecdc400/18d8bc3eb13533faa998d335a7d3fd1f41345bfa.jpg")

  req = urllib.request.urlopen("import urllib.request

def main():

# req = urllib.request.urlopen("https://gss3.bdstatic.com/-Po3dSag_xI4khGkpoWK1HF6hhy/baike/whfpf%3D360%2C280%2C50/sign=71bcd12444fbfbeddc0c653f1ecdc400/18d8bc3eb13533faa998d335a7d3fd1f41345bfa.jpg")

  req = urllib.request.urlopen("https://gss2.bdstatic.com/-fo3dSag_xI4khGkpoWK1HF6hhy/baike/s%3D220/sign=bc88abda1fdfa9ecf92e511552d1f754/023b5bb5c9ea15ce788829cfb8003af33b87b296.jpg")

# req = urllib.request.urlopen("")

# req = urllib.request.urlopen("https://img.alicdn.com/tfs/TB1_.LJe7P2gK0jSZPxXXacQpXa-1880-640.jpg")

  img_content = req.read()

with open('4.jpg', 'wb')as f:

f.write(img_content)

if __name__ =='__main__':

main()")

  # req = urllib.request.urlopen("https://rpic.douyucdn.cn/live-cover/roomCover/cover_update/2019/09/17/1f067e8b2763c9cd4fd8f3a77ea12522.jpg/webpdy1")

# req = urllib.request.urlopen("https://img.alicdn.com/tfs/TB1_.LJe7P2gK0jSZPxXXacQpXa-1880-640.jpg")

  img_content = req.read()

with open('4.jpg', 'wb')as f:

f.write(img_content)

if __name__ =='__main__':

main()

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