Python实现http协议、http服务器（1）

文章目录

• 1.实现简单的http服务器
• 2.设定套接字选项
• 3.分会inde.html页面
• 4.根据用户需求返回相应的页面

1.实现简单的http服务器

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---boy
response += "hahahhah"
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)

# 2. 绑定
tcp_server_socket.bind(("", 7890))

# 3. 变为监听套接字
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)

# 关闭监听套接字
tcp_server_socket.close()

if __name__ == "__main__":
main()

2.设定套接字选项

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---boy
response += "hahahhah"
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
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)

# 关闭监听套接字
tcp_server_socket.close()

if __name__ == "__main__":
main()

3.分会inde.html页面

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(">>>"*50)
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---boy
# response += "hahahhah"

f = open("./html/index.html", "rb")
html_content = f.read()
f.close()

# 将response header发送给浏览器
new_socket.send(response.encode("utf-8"))
# 将response body发送给浏览器
new_socket.send(html_content)

# 关闭套接
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)

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)

# 关闭监听套接字
tcp_server_socket.close()

if __name__ == "__main__":
main()

4.根据用户需求返回相应的页面

import socket
import re

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).decode("utf-8")
# print(">>>"*50)
# print(request)

request_lines = request.splitlines()
print("")
print(">"*20)
print(request_lines)

# GET /index.html HTTP/1.1
# get post put del
file_name = ""
ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])
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("./html" + 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()
# 2.1 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---boy
# response += "hahahhah"

# 将response header发送给浏览器
new_socket.send(response.encode("utf-8"))
# 将response body发送给浏览器
new_socket.send(html_content)

# 关闭套接
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)

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)

# 关闭监听套接字
tcp_server_socket.close()

if __name__ == "__main__":
main()