Web静态服务器

Web静态服务器

编程微刊

Web静态服务器-1-显示固定的页面

#coding=utf-8
import socket

def handle_client(client_socket):
    "为一个客户端进行服务"
    recv_data = client_socket.recv(1024).decode("utf-8")
    request_header_lines = recv_data.splitlines()
    for line in request_header_lines:
        print(line)

    # 组织相应 头信息(header)
    response_headers = "HTTP/1.1 200 OK
"  # 200表示找到这个资源
    response_headers += "
"  # 用一个空的行与body进行隔开
    # 组织 内容(body)
    response_body = "hello world"

    response = response_headers + response_body
    client_socket.send(response.encode("utf-8"))
    client_socket.close()

def main():
    "作为程序的主控制入口"

    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 设置当服务器先close 即服务器端4次挥手之后资源能够立即释放，这样就保证了，下次运行程序时 可以立即绑定7788端口
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server_socket.bind(("", 7788))
    server_socket.listen(128)
    while True:
        client_socket, client_addr = server_socket.accept()
        handle_client(client_socket)

if __name__ == "__main__":
    main() 

服务器端

image

客户端

image

** Web静态服务器-2-显示需要的页面**

#coding=utf-8
import socket
import re

def handle_client(client_socket):
    "为一个客户端进行服务"
    recv_data = client_socket.recv(1024).decode('utf-8', errors="ignore")
    request_header_lines = recv_data.splitlines()
    for line in request_header_lines:
        print(line)

    http_request_line = request_header_lines[0]
    get_file_name = re.match("[^/]+(/[^ ]*)", http_request_line).group(1)
    print("file name is ===>%s" % get_file_name)  # for test

    # 如果没有指定访问哪个页面。例如index.html
    # GET / HTTP/1.1
    if get_file_name == "/":
        get_file_name = DOCUMENTS_ROOT + "/index.html"
    else:
        get_file_name = DOCUMENTS_ROOT + get_file_name

    print("file name is ===2>%s" % get_file_name) #for test

    try:
        f = open(get_file_name, "rb")
    except IOError:
        # 404表示没有这个页面
        response_headers = "HTTP/1.1 404 not found
"
        response_headers += "
"
        response_body = "====sorry ,file not found===="
    else:
        response_headers = "HTTP/1.1 200 OK
"
        response_headers += "
"
        response_body = f.read()
        f.close()
    finally:
        # 因为头信息在组织的时候，是按照字符串组织的，不能与以二进制打开文件读取的数据合并，因此分开发送
        # 先发送response的头信息
        client_socket.send(response_headers.encode('utf-8'))
        # 再发送body
        client_socket.send(response_body)
        client_socket.close()

def main():
    "作为程序的主控制入口"
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    server_socket.bind(("", 7788))
    server_socket.listen(128)
    while True:
        client_socket, clien_cAddr = server_socket.accept()
        handle_client(client_socket)

#这里配置服务器
DOCUMENTS_ROOT = "./html"

if __name__ == "__main__":
    main()

服务器端

image.gif

客户端

image.gif

**Web静态服务器-3-多进程 **

#coding=utf-8
import socket
import re
import multiprocessing

class WSGIServer(object):

    def __init__(self, server_address):
        # 创建一个tcp套接字
        self.listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # 允许立即使用上次绑定的port
        self.listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        # 绑定
        self.listen_socket.bind(server_address)
        # 变为被动，并制定队列的长度
        self.listen_socket.listen(128)

    def serve_forever(self):
        "循环运行web服务器，等待客户端的链接并为客户端服务"
        while True:
            # 等待新客户端到来
            client_socket, client_address = self.listen_socket.accept()
            print(client_address)  # for test
            new_process = multiprocessing.Process(target=self.handleRequest, args=(client_socket,))
            new_process.start()

            # 因为子进程已经复制了父进程的套接字等资源，所以父进程调用close不会将他们对应的这个链接关闭的
            client_socket.close()

    def handleRequest(self, client_socket):
        "用一个新的进程，为一个客户端进行服务"
        recv_data = client_socket.recv(1024).decode('utf-8')
        print(recv_data)
        requestHeaderLines = recv_data.splitlines()
        for line in requestHeaderLines:
            print(line)

        request_line = requestHeaderLines[0]
        get_file_name = re.match("[^/]+(/[^ ]*)", request_line).group(1)
        print("file name is ===>%s" % get_file_name) # for test

        if get_file_name == "/":
            get_file_name = DOCUMENTS_ROOT + "/index.html"
        else:
            get_file_name = DOCUMENTS_ROOT + get_file_name

        print("file name is ===2>%s" % get_file_name) # for test

        try:
            f = open(get_file_name, "rb")
        except IOError:
            response_header = "HTTP/1.1 404 not found
"
            response_header += "
"
            response_body = "====sorry ,file not found===="
        else:
            response_header = "HTTP/1.1 200 OK
"
            response_header += "
"
            response_body = f.read()
            f.close()
        finally:
            client_so

Web静态服务器-4-多线程

#coding=utf-8
import socket
import re
import threading
class WSGIServer(object):

    def __init__(self, server_address):
        # 创建一个tcp套接字
        self.listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # 允许立即使用上次绑定的port
        self.listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        # 绑定
        self.listen_socket.bind(server_address)
        # 变为被动，并制定队列的长度
        self.listen_socket.listen(128)

    def serve_forever(self):
        "循环运行web服务器，等待客户端的链接并为客户端服务"
        while True:
            # 等待新客户端到来
            client_socket, client_address = self.listen_socket.accept()
            print(client_address)
            new_process = threading.Thread(target=self.handleRequest, args=(client_socket,))
            new_process.start()

            # 因为线程是共享同一个套接字，所以主线程不能关闭，否则子线程就不能再使用这个套接字了
            # client_socket.close() 

    def handleRequest(self, client_socket):
        "用一个新的进程，为一个客户端进行服务"
        recv_data = client_socket.recv(1024).decode('utf-8')
        print(recv_data)
        requestHeaderLines = recv_data.splitlines()
        for line in requestHeaderLines:
            print(line)

        request_line = requestHeaderLines[0]
        get_file_name = re.match("[^/]+(/[^ ]*)", request_line).group(1)
        print("file name is ===>%s" % get_file_name) # for test

        if get_file_name == "/":
            get_file_name = DOCUMENTS_ROOT + "/index.html"
        else:
            get_file_name = DOCUMENTS_ROOT + get_file_name

        print("file name is ===2>%s" % get_file_name) # for test

        try:
            f = open(get_file_name, "rb")
        except IOError:
            response_header = "HTTP/1.1 404 not found
"
            response_header += "
"
            response_body = "====sorry ,file not found===="
        else:
            response_header = "HTTP/1.1 200 OK
"
            response_header += "
"
            response_body = f.read()
            f.close()
        finally:
            client_socket.send(response_header.enc

Web静态服务器-5-非堵塞模式

单进程非堵塞 模型

#coding=utf-8
from socket import *
import time

# 用来存储所有的新链接的socket
g_socket_list = list()

def main():
    server_socket = socket(AF_INET, SOCK_STREAM)
    server_socket.setsockopt(SOL_SOCKET, SO_REUSEADDR  , 1)
    server_socket.bind(('', 7890))
    server_socket.listen(128)
    # 将套接字设置为非堵塞
    # 设置为非堵塞后，如果accept时，恰巧没有客户端connect，那么accept会
    # 产生一个异常，所以需要try来进行处理
    server_socket.setblocking(False)

    while True:

        # 用来测试
        time.sleep(0.5)

        try:
            newClientInfo = server_socket.accept()
        except Exception as result:
            pass
        else:
            print("一个新的客户端到来:%s" % str(newClientInfo))
            newClientInfo[0].setblocking(False)  # 设置为非堵塞
            g_socket_list.append(newClientInfo)

        for client_socket, client_addr in g_socket_list:
            try:
                recvData = client_socket.recv(1024)
                if recvData:
                    print('recv[%s]:%s' % (str(client_addr), recvData))
                else:
                    print('[%s]客户端已经关闭' % str(client_addr))
                    client_socket.close()
                    g_socket_list.remove((client_socket,client_addr))
            except Exception as result:
                pass

        print(g_socket_list)  # for test

if __name__ == '__main__':
    main() 

web静态服务器-单进程非堵塞

import time
import socket
import sys
import re

class WSGIServer(object):
    """定义一个WSGI服务器的类"""

    def __init__(self, port, documents_root):

        # 1. 创建套接字
        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # 2. 绑定本地信息
        self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        self.server_socket.bind(("", port))
        # 3. 变为监听套接字
        self.server_socket.listen(128)

        self.server_socket.setblocking(False)
        self.client_socket_list = list()

        self.documents_root = documents_root

    def run_forever(self):
        """运行服务器"""

        # 等待对方链接
        while True:

            # time.sleep(0.5)  # for test

            try:
                new_socket, new_addr = self.server_socket.accept()
            except Exception as ret:
                print("-----1----", ret)  # for test
            else:
                new_socket.setblocking(False)
                self.client_socket_list.append(new_socket)

            for client_socket in self.client_socket_list:
                try:
                    request = client_socket.recv(1024).decode('utf-8')
                except Exception as ret:
                    print("------2----", ret)  # for test
                else:
                    if request:
                        self.deal_with_request(request, client_socket)
                    else:
                        client_socket.close()
                        self.client_socket_list.remove(client_socket)

            print(self.client_socket_list)

    def deal_with_request(self, request, client_socket):
        """为这个浏览器服务器"""
        if not request:
            return

        request_lines = request.splitlines()
        for i, line in enumerate(request_lines):
            print(i, line)

        # 提取请求的文件(index.html)
        # GET /a/b/c/d/e/index.html HTTP/1.1
        ret = re.match(r"([^/]*)([^ ]+)", request_lines[0])
        if ret:
            print("正则提取数据:", ret.group(1))
            print("正则提取数据:", ret.

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