本次的服务器是在使用了 正则解析 http的请求报文,提取报文中的请求文件路径,然后读取对应的文件路径进行。
import socket
import re
def service_client(new_socket):
request = new_socket.recv(1024).decode("utf-8")
#把请求到的字符串切割为列表
request_lines = request.splitlines()
#GET /html HTTP/1.1
#进行正则匹配
ret = re.match(r"[^/]+(/[^ ]*)",request_lines[0])
#只有当正则匹配到东西之后,才进行group获取
if ret:
file_name = ret.group(1)
if file_name == "/":
file_name = "/index.html"
#对于文件的打开需要额外的注意
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:
response = "HTTP/1.1 200 ok\r\n"
response += "\r\n"
html_content = f.read()
new_socket.send(response.encode("utf-8"))
new_socket.send(html_content)
new_socket.close()
def main():
tcp_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
tcp_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
tcp_socket.bind(("",7788))
tcp_socket.listen(128)
while True:
new_socket,client_addr = tcp_socket.accept()
service_client(new_socket)
tcp_socket.close()
if __name__ == "__main__":
main()
1,try-except-else的书写模式
2,请求报文和应答报文的特点
3,正则的匹配